OCOOPA UT2s 2 in 1 Magnetic Rechargeable Hand Warmers

Product Information

• Product Name: UL Follow-Up Service Procedure (Type R)
• Product Code: E535516
• Manufacturer: Shenzhen Street Cat Technology Co., Ltd
• Listee/Classified Company: Shenzhen Street Cat Technology Co., Ltd
• Product Type: Heaters, Specialty (KSOT, KSOT7)
• Authorization Page: Vol 2, Page 1
• Issued Date: 2023-08-07
• Revised Date: 2023-08-07

Use of the Mark
The UL Follow-Up Service Procedure ensures that only products meeting the specified requirements bear the authorized Marks of UL LLC or any authorized licensee of UL LLC. It is the responsibility of the Applicant, Manufacturer(s), and Listee/Classified Company to comply with this requirement.

Additional Responsibilities
The Follow-Up Service Procedure contains confidential information and is the property of UL. It is not transferable and should only be used by the Applicant, specified Manufacturer(s), and representatives of UL for the intended purpose. Unauthorized use or copying of the procedure is strictly prohibited.

Definition of Terms
Capitalized terms used but not defined in the procedure have the meanings set forth in the GSA (General Services Administration) and the applicable Service Terms or any other applicable UL service agreement.

No Third Party Liability
UL shall not be liable for any loss, expense, or damages arising out of or in connection with the use or reliance upon this Follow-Up Service Procedure by anyone other than the Manufacturer(s) specified in the agreement between UL LLC or an authorized licensee of UL LLC and the Manufacturer(s). This procedure does not create any obligations or liabilities for third parties.

Certification Body
UL LLC has signed below as the certification body to indicate that this Follow-Up Service Procedure fulfills the requirements for certification documentation. The accreditation status for the applicable certification scheme and identification of the accreditation body can be found at https://www.ul.com/resources/accreditation.

Product Usage Instructions

• Step 1: Review Material
  Before using the UL Follow-Up Service Procedure, carefully review all the provided material, including the attached documents and updates.

• Step 2: Ensure Compliance
  Make sure that your product meets the specified requirements mentioned in the Follow-Up Service Procedure. Only products meeting these requirements are eligible to bear the authorized Marks of UL LLC or any authorized licensee of UL LLC.

• Step 3: Understand Additional Responsibilities
  Understand and comply with the additional responsibilities mentioned in the procedure. These responsibilities include accepting follow-up services and ensuring the proper use and ownership of the Follow-Up Service Procedure.

• Step 4: Confidentiality and Copying
  Keep in mind that the Follow-Up Service Procedure contains confidential information. Do not copy or disclose this information unless specifically allowed. If requested by UL, return the procedure promptly.

• Step 5: Seek Assistance
  If you have any questions, need clarification, or want to report inaccuracies, contact your UL representative or find UL contact details for your local Customer Service Department at https://www.ul.com/about/locations.

• Step 6: Use Authorized Marks
  Ensure that only the products meeting the requirements specified in the Follow-Up Service Procedure bear the authorized Marks of UL LLC or any authorized licensee of UL LLC. Unauthorized use of the Marks is strictly prohibited.

• Step 7: Compliance with UL Contracting Party
  Comply with the agreement between UL LLC or an authorized licensee of UL LLC, including UL Contracting Party, and the Manufacturer(s) to avoid any obligations or liabilities.

• Step 8: Follow-up Services
  Cooperate with UL during follow-up services to ensure ongoing compliance with the specified requirements. Respond promptly to any requests for information or documentation related to the Follow-Up Service Procedure.

• Step 9: Record Keeping
  Maintain accurate records of your compliance with the Follow-Up Service Procedure, including test records, certificates of compliance, and any other relevant documentation.

• Step 10: Updates and Revisions
  Stay informed about any updates or revisions to the Follow-Up Service Procedure. Ensure that you are using the latest version and implement any necessary changes to maintain compliance.

Specifications

• Product Name: UL Follow-Up Service Procedure (Type R)
• Product Code: E535516
• Manufacturer: Shenzhen Street Cat Technology Co., Ltd
• Listee/Classified Company: Shenzhen Street Cat Technology Co., Ltd
• Product Type: Heaters, Specialty (KSOT, KSOT7)
• Authorization Page: Vol 2, Page 1
• Issued Date: 2023-08-07
• Revised Date: 2023-08-07

Thank you for giving UL the opportunity to partner with you. Please note, Follow-Up Procedure Revisions or Report Revisions do not include Authorization Pages, Indices, Section General, and/or Appendices unless revisions were required or requested. Should you have any questions, after reviewing the material, or need to report any inaccuracies, please reach out to your UL representative or find UL contact details for your local Customer Service Department at  https://www.ul.com/about/locations.

Please find attached the related material For your convenience, the below describes the related updates:

E535516-Vol2-AuthorizationPage

E535516-vol2-ListingMarkData
E535516-vol2-Index
E535516-vol2-Appendix
E535516-vol2-AppendixStandardized
E535516-vol2-SectionGeneral
E535516-20230807-CertificateofCompliance
E535516-20230807-Description
Figure-3-Total
Illustration-4-Total
E535516-20230807-TestRecord

This material is provided on behalf of UL LLC (UL) or any authorized licensee of UL. Times change, Trust Remains™

File E535516

• Issued: 2023-08-07
• Revised : 2023-08-07

FOLLOW-UP SERVICE PROCEDURE (TYPE R) HEATERS, SPECIALTY (KSOT, KSOT7)

Shenzhen Street Cat Technology Co., Ltd

1st Floor, Building 38, Xinmu Xinyuan Industrial Park, Pinghu Street, Longgang District, Shenzhen

Shenzhen GD CN

Listee/Classified Company:| 3306403 (Party Site) SAME AS APPLICANT

Use of the Mark
This Follow-Up Service Procedure authorizes the above Manufacturer(s) to use the marking specified by UL LLC, or any authorized licensee of UL LLC, including the UL Contracting Party, only on products when constructed, tested and found to be in compliance with the requirements of this Follow-Up Service Procedure and in accordance with the terms of the applicable service agreement with UL Contracting Party. The UL Contracting Party for Follow- Up Services is listed in the addendum to this Follow-Up Service Procedure (“UL Contracting Party”). UL Contracting Party and UL LLC are referred to jointly herein as “UL.”

It is the responsibility of the Applicant, Manufacturer(s), and Listee/Classified Company to make sure that only the products meeting the aforementioned requirements bear the authorized Marks of UL LLC, or any authorized licensee of UL LLC.

Additional Responsibilities
Additional responsibilities, duties and requirements for the Applicant and Manufacturers are defined under Additional Resources at the following website: https: //www.ul.com/fus.

Manufacturers without Internet access may obtain the current version of these documents from their local UL customer service representative or UL field representative. For assistance, or to obtain a paper copy of these documents or the Follow-Up Service Terms referenced below, please contact UL’s Customer Service at https: //www.ul.com/aboutul/locations /, select a location and enter your request, or call the number listed for that location.

Acceptance of Follow-Up Services
The Applicant and the specified Manufacturer(s) and any Listee/Classified Company in this Follow-Up Service Procedure must agree to receive Follow-Up Services from UL Contracting Party. If your applicable service agreement is a Global Services Agreement (“GSA”), the Applicant, the specified Manufacturer(s), and any Listee/Classified Company will be bound to a Service Agreement for Follow-Up Services upon the earliest by any Subscriber of a) use of the prescribed UL Mark, b) acceptance of the factory inspection, or c) payment of the Follow-Up Service fees.

The Service Agreement incorporates such GSA, this Follow-Up Service Procedure and the Follow-Up Service Terms which can be accessed by clicking the following link: https: //www.ul.com/resources/contracts/follow-up-service- terms. In all other events, Follow-Up Services will be governed by and incorporate the terms of your applicable service agreement and this Follow-Up Service Procedure.

Use and Ownership of the Follow-Up Service Procedure
This Follow-Up Service Procedure, and any subsequent revisions, is the property of UL and is not transferable. This Follow-Up Service Procedure contains confidential information for use only by the Applicant, the specified Manufacturer(s), and representatives of UL and is not to be used for any other purpose. It is provided to the Subscribers with the understanding that it is not to be copied, either wholly or in part unless specifically allowed, and that it will be returned to UL, upon request.

Definition of Terms
Capitalized terms used but not defined herein have the meanings set forth in the GSA and the applicable Service Terms or any other applicable UL service agreement

No Third Party Liability
UL shall not incur any obligation or liability for any loss, expense or damages, including incidental, consequential or punitive damages arising out of or in connection with the use or reliance upon this Follow-Up Service Procedure to anyone other than the above Manufacturer(s) as provided in the agreement between UL LLC or an authorized licensee of UL LLC, including UL Contracting Party, and the Manufacturer(s).

Certification Body
UL LLC has signed below solely in its capacity as the certification body to indicate that this Follow-Up Service Procedure fulfills the requirements for certification documentation issued by the certification body. The certification body’s accreditation status for the applicable certification scheme and identification of the accreditation body can be found at https: //www.ul.com/resources/accreditation.

Deborah Jennings-Conner VP Regulatory Services UL LLC

• LOCATION: 1611196 (Party Site) Shenzhen Aoolif technology Co., Ltd 2nd Floor, Building C, Yucai Industrial Area Phase 1 Qiaotou Community, Fuyong Town, Bao’an Shenzhen CN
• Factory ID:   None
• UL Contracting Party for above site is: UL GmbH

FILE IMMEDIATELY AFTER AUTHORIZATION PAGE

LISTING MARK
The Listing Mark consists of four elements placed in close proximity and shall appear on Listed products only.

The word “LISTED” shall be in either the four or six o’clock position with respect to the UL symbol (see example below). Minimum size of the Listing Mark is not specified, as long as it is legible. The minimum height of the registered trademark symbol ® shall be 3/64 of an inch. When the overall diameter of the UL symbol is less than 3/8 of an inch, the trademark symbol may be omitted if it is not legible. Camera-ready artwork and relative proportions are available online at www.ul.com.

[PRODUCT IDENTITY] XXXX

• XXXX = The control number assigned by UL, E535516. The product identity is: “HAND DRYER,” “PET DRYER,” “EMBOSSER,” “STOCK TANK HEATER,” “CHARCOAL IGNITER,” or the name of the specific type of product as shown in the individual Listing.

For rebuilt products, the word “REBUILT,” “REFURBISHED” or “REMANUFACTURED” precedes the product identity. The product identity may appear elsewhere on the product when the other three elements are directly and permanently applied to the product by stamping, molding, ink-stamping, silk screening or similar process or part of the nameplate that includes the rating or the catalog or model designation. A separable Listing Mark (not part of a nameplate and in the form of decals, stickers or labels) shall always include the four elements.

PROCUREMENT
The manufacturer may reproduce the Mark or obtain it from an authorized label supplier. Authorized label suppliers can be found online at www.ul.com.

THIS PAGE SHALL BE REVISED BY UL LABEL OPERATIONS ONLY

Canadian Listing Mark Data Page
(FILE IMMEDIATELY AFTER AUTHORIZATION PAGE)

LISTING MARK
The Listing Mark consists of four elements placed in close proximity and shall appear on Listed products only.

The word “LISTED” shall be in either the four or six o’clock position with respect to the UL symbol (see example below). Minimum size of the Listing Mark is not specified, as long as it is legible. The minimum height of the registered trademark symbol ® shall be 3/64 of an inch. When the overall diameter of the UL symbol is less than 3/8 of an inch, the trademark symbol may be omitted if it is not legible. Camera-ready artwork and relative proportions are available online at www.ul.com.

The Canadian/US symbol shall be used if both Canadian and US coverage is authorized (see example below).

[PRODUCT IDENTITY] XXXX
The Canadian symbol shall be used if only Canadian coverage is authorized (see example below).

• XXXX = The control number assigned by UL, E535516.

The product identity is:
“HAND DRYER,” “HOBBY KILN,” “PET DRYER,” “EMBOSSER,” “STOCK TANK HEATER,” “CHARCOAL IGNITER,” or the name of the specific type of product as shown in the individual Listing.

Canadian Listing Mark Data Page

For rebuilt products, the word “REBUILT,” “REFURBISHED” or “REMANUFACTURED” precedes the product identity.

The product identity may appear elsewhere on the product when the other three elements are directly and permanently applied to the product by stamping, molding, ink-stamping, silk screening or similar process or part of the nameplate that includes the rating or the catalog or model designation. A separable Listing Mark (not part of a nameplate and in the form of decals, stickers or labels) shall always include the four elements.

PROCUREMENT
The manufacturer may reproduce the Mark or obtain it from an authorized label supplier. Authorized label suppliers can be found online at www.ul.com.

INDEX

• USL = United States Standards, Listed
• CNL = Canadian National Standards, Listed

Heaters, Specialty (KSOT)

SPECIAL APPENDIX B
SPECIAL INSTRUCTIONS TO THE INSPECTOR FOR SAMPLE PICK UP

INSPECTOR:
Once each year, select the models in the quantity specified on Page 2.

The selected samples shall be appropriately identified, tagged to indicate materials, manufacturer, and type designation, group from which selected and forwarded to the Follow-Up Services Department, Northbrook Office.

SAMPLE SELECTION GUIDE

Reserve for future use

SPECIAL APPENDIX C

INSTRUCTIONS FOR FOLLOW-UP TESTS AT UL
General – The samples shall be subjected to the tests specified below and using UL 499 Standard referencing “Insulation Resistance and Leakage Current as a Result of Moisture” as a guide.

RESERVED FOR FUTUE USE
Based on engineering judgment, the Production Line Dielectric Withstand Test is not required to be performed on the models tabulated below:

APPENDIX E

INSTRUCTIONS FOR FIELD REPRESENTATIVE’S SAMPLE SELECTION
Certain products covered by this Procedure, employ embedded components and NRTL components, requiring follow-up tests at UL. Once each year, the Field Representative shall select the required number of samples from each component Group in accordance with the Sample Selection Guide in Special Appendix E. One model from each Group in each component table shall be selected once in each calendar year. Different models shall be selected within each Group so that all models are eventually tested.

The Field Representative is responsible for selecting the quantity of samples at the stated frequency for Follow-Up testing in accordance with the Sample Selection criteria noted above. Samples shall be identified and tagged with the applicable information using a Sample Tag (Form 3000-217). Unless otherwise stated, the Field Representative shall inform the manufacturer that the samples are to be forwarded to the Test Office(s) as designated on the specific Procedure Volume subscriber card.

The tests to be conducted are described in Appendix F and summarized in the Index to Testing table in Special Appendix F.

GROUPING:
Appliances are grouped in the Sample Selection Guide in Special Appendix E by components. All products within a group use the same components and electrical ratings and have basically the same physical size and shape.

SAMPLE SELECTION
All appliances with embedded components and NRTL components, shall be subjected follow-up testing. If more than one component is specified for the construction noted, samples of the product employing each specified component available shall be selected.

SAMPLE SELECTION GUIDE

A. Motor:

– Abnormal Operation (Locked Rotor)Test:
B. Transformer:
– Abnormal Operation (Transformer Output Shorted)Test:
C. Class 2 Transformer:
– Abnormal Operation (Transformer Output Shorted)Test:
– Output Current And Power Test:
D. Fan Speed Control:
– Switch Overload Test(For Motor, Heater Switch And Speed Control):
E. Motor, Heater Switch:
– Switch Overload Test(For Motor, Heater Switch And Speed Control):
SAMPLE SELECTION GUIDE| Parts/Components| Under
---|---|---
Test|
Group| Product| Procedure| Sample| |
No.| Designation| Section| Quantity| Part/Co     Item| Fig.
| (Cat. No.,| or| (*)| mponent     No.| Or
| Model. No.)| Report| | s| Ill.
| | Date| | Name| No.
| | | | (#)|

The Sample Quantity depends on the tests to be conducted as specified in Special Appendix F.

Indicate “Complete Product” or specify the parts/components by name as

specified in the Procedure that need to be selected, including the Item and Figure or Illustration reference in the Report. Complete samples are required for Abnormal Operation Tests.

Note : Samples quantity may be reduced if sufficient samples obtained from Follow-up tests in preceding appendix in this specific end product Follow-up program, can be used to conduct above Follow-up tests.

APPENDIX F

INSTRUCTIONS FOR FOLLOW-UP TESTS AT UL

GENERAL:
The samples forwarded by the Field Representative to UL in accordance with Appendix E shall be subjected to the tests described below as specified in the Index to Testing in Special Appendix F.

ABNORMAL OPERATION (LOCKED ROTOR) TEST:

Method
A sample of the appliance shall be operated as indicated in the Index to Testing under the heading “Abnormal Operation (Locked Rotor)”. During the test, one sample of the appliance is to be draped with one layer of cheesecloth while resting on white tissue paper on a softwood surface. 3 A non-time delay plug fuse was connected from exposed dead-metal parts to earth ground. The appliance shall be operated continuously with locked rotor until ultimate results have been determined. In most cases, continuous operation for 7 h will be necessary in order to make sure that the ultimate results have been determined.

Basis For Acceptability
There shall be no ignition of the enclosure material, exposure of live parts, emission of flame or molten metal, nor glowing or flaming of the cheesecloth or the combustible material upon which the appliance is placed. The 3 A fuse does not open.

ABNORMAL OPERATION (TRANSFORMER OUTPUT SHORTED) TEST:

Method
A sample of the appliance shall be operated as indicated in the Index to Testing under the heading “Abnormal Operation(TRANSFORMER OUTPUT SHORTED)”. During the test, one sample of the appliance is to be draped with one layer of cheesecloth while resting on white tissue paper on a softwood surface. 3 A non-time delay plug fuse was connected from exposed dead-metal parts to earth ground. The appliance shall be operated continuously with transformer output shorted until ultimate results have been determined. In most cases, continuous operation for 7 h will be necessary in order to make sure that the ultimate results have been determined.

Basis For Acceptability
There shall be no ignition of the enclosure material, exposure of live parts, emission of flame or molten metal, nor glowing or flaming of the cheesecloth or the combustible material upon which the appliance is placed. The 3 A fuse does not open.

OUTPUT CURRENT AND POWER TEST:

Method:

• During these tests each unit was placed on a tissue covered soft wood surface and draped with a double layer of cheesecloth. The thermal protector or fuse was shorted.
• The output under test was resistively loaded, including short circuit, to result in maximum output current or power.
• The remaining outputs were open circuited or resistively loaded to result in minimum load. The test was repeated for each output.
• The remaining sections of a tapped winding were open circuited resistively loaded to result in minimum load. The test was repeated for each section of a tapped winding.
• The current and power measurement was taken at 5 s, except 60 s measurement for a linear type unit which (a) may employ a fuse or thermal protector, and (b) does not employ a limiting impedance or electronic limiting component or circuit.

Note to Lab:
For tests specifying output current or power values at 60 s, make periodic measurements and record the values. If the unit opened prior to 60 s, plot a graph and fit a curve to calculate the 60 second values. The value is to be used for determining compliance with current and power limits, and for other tests which use maximum current or power to calculate overload test conditions.

Maximum Output Current:
The output under test was resistively loaded, including short circuit, to result in maximum output current. Without further adjustment of the load, the supply circuit was de-energized and the sample was allowed to cool to room temperature. The supply circuit was then re-energized and the output current was measured 5 s or 60 s, as applicable after application of voltage to the primary. The current at 5 s or 60 s, as applicable, was recorded.

Maximum Output Power:
The output under test was resistively loaded to result in maximum output power as determined by a watt meter. Without further adjustment of the load, the supply circuit was de-energized and the sample was allowed to cool to room temperature. The supply circuit was then re-energized and the output power was measured 5 s or 60 s, as applicable, after application of voltage to the primary. The power at 5 s, or 60 s, as applicable, was recorded.

Basis For Acceptability:

For inherently limited outputs:

• The maximum output current and power did not exceed 8 A and 100 W, respectively, for AC outputs.
• The maximum output current and power did not exceed 8 A and 100 W, respectively, for DC outputs with a maximum voltage of 30 V.
• The maximum output current and power did not exceed 150/Vmax A and 100 W, respectively, for DC outputs with a maximum voltage over 30 V.

For not inherently limited outputs:

• The maximum output current and power did not exceed 1000/Vmax A and 350 W, respectively, for outputs with a maximum voltage of 15 V.
• The maximum secondary current and power did not exceed 1000/Vmax A and 250 W, respectively, for outputs with a maximum voltage over 15 V but not more than 20 V.
• The maximum output current and power did not exceed 1000/Vmax A and 250 W, respectively, for outputs with a maximum voltage over 20 V.

SWITCH OVERLOAD TEST (FOR MOTOR, HEATER SWITCH AND SPEED CONTROL):

Test Method
Testing is to be conducted on the switch or speed control with the switch making and breaking a load equivalent to the voltage, current, and power factor encountered in the appliance operated with the motor armature locked in place. For heater switch, the switch was loaded to 150% of the rated switch current. The switch is to be mechanically opened and closed for 50 cycles at a rate of 6 – 10 cycles per minute.

Basis For Acceptability
Following the test, the switch is to remain operable with no evidence of mechanical or electrical failure.

FOLLOW-UP TEST SELECTION
The samples selected as specified in the Sample Selection Guide of Special Appendix E shall be subjected to the testing as specified in the Index to Testing table below. In general, samples are subjected to those tests which were conducted during the Listing investigation for the product.

APPENDIX G

MANUFACTURER’ S RESPONSIBILITIES, AND REQUIREMENTS FOR FACTORY TESTS
The Follow-Up Service Procedure covering the product is loaned to the manufacturer and constitutes the basis on which the product is judged for compliance with the applicable requirements.

PRODUCTION LINE TESTS TO BE WITNESSED BY UL REPRESENTATIVE

• The Field Representative shall witness the following production-line tests as specified in Appendix G, during the inspection. Samples shall be selected, according to the group as specified in table for SAMPLE SELECTION GUIDE – IN FACTORY TESTS.
• The tests to be conducted are described in Appendix G and summarized in table for INDEX TO WITNESS TESTS in Special Appendix G.
• If the manufacturer does not have the facility to conduct the following production line tests, the selected samples shall be forwarded to UL as Follow-Up samples, according to Page 1 of Appendix E, to complete tests described in Appendix G as Follow-Up tests.

WINDING RESISTANCE MEASUREMENT:

Method
One sample of motor, shall be subjected to this test. With each of the motors at room temperatures, the DC coil resistance was measured. One sample for each model used for winding resistance measurement.

Test Equipment
Ohmmeters of appropriate range are needed and shall be Calibrated laboratory type.

Basis For Acceptability
If measured winding resistance shall not exceed manufacturer’s winding resistance by 10%.

PROCEDURE IN CASE OF NONCONFORMANCE:
If measured winding resistance results in a nonconformance, the test shall be repeated on additional samples. Three additional samples, from the same lot as the original sample, shall be subjected to the Winding Resistance Measurement as described in these Appendix Pages. The average measured winding resistance shall not exceed manufacturer’s winding resistance by 10%.

DIELECTRIC VOLTAGE WITHSTAND TEST (TRANSFORMER):

METHOD:
A sample of transformer is subjected to the following test. The following potentials were gradually applied between primary and secondary circuits, and maintained for one min. 1000 plus two times the maximum rated input voltage V ac; or 1000 plus two times maximum working voltage(for switching-type transformer) V ac; (+). (+) – The ac potential resulted in excessive leakage through capacitors.

Therefore, the capacitors were removed from the circuit for the AC potential. With the capacitors connected in the circuit, the unit was subjected to a DC potential of 1.414 times the AC rms potential.

Test Equipment
The equipment used to perform the test shall provide the following features:

1. There shall be either a visible or audible means of indicating an electrical breakdown to the operator.
2. There shall be either a manually resettable device to restore the equipment after electrical breakdown, or an automatic feature that rejects any nonconforming unit.
3. If the output of the test-equipment transformer is less than 500 volt-amperes, the equipment shall include a voltmeter in the output circuit to indicate the test potential directly.
4. If the output of the test-equipment transformer is 500 volt- amperes or more, the test potential may be indicated (1) by a voltmeter in the primary circuit or in a tertiary-winding circuit,

(2) by a selector switch marked to indicate the test potential, or (3), in the case of equipment having a single test-potential output, by a marking in a readily visible location to indicate the test potential. When a marking is used to indicate the test potential without an indicating voltmeter, the equipment shall include a positive means, such as an indicator lamp, to indicate that the manually resettable device has been reset following a dielectric breakdown.

Sensitivity Requirements
At least once each year the sensitivity of the dielectric equipment is to be checked. The sensitivity of the equipment is to be such that when adjusted to produce the required test voltage and with a 120,000 ohm resistor across the test terminals, the equipment indicates a “breakdown” (a nonconforming performance indication by the tester) within 0.5 seconds. The resistor used shall be provided by the manufacturer and shall have a resistance found to be equal to or greater than 120,000 ohm when measured using a calibrated ohmmeter traceable to the National Institute of Standards and Technology (NIST). If the equipment does not meet this sensitivity test, it shall be readjusted and provision made to maintain the proper calibration

Basis For Acceptability:
The spacings and insulation withstood the application of the specified potentials for one minute without indication of breakdown.

MAXIMUM OUTPUT VOLTAGE TEST:

Method
One sample of transformer from the end product, shall be subjected to this test. The maximum output voltage under any load condition, including open- circuit, between any two output terminations were measured.

Test Equipment
 Voltmeters of appropriate range are needed and shall be Calibrated laboratory type.

Basis For Acceptability
The output voltage does not exceed 42.4 V peak for sinusoidal or non- sinusoidal ac. The output voltage did not exceed [60 V] [CUL – 42.4 V] for continuous dc. The output voltage did not exceed 24.8 V for dc interrupted at a rate of 200 Hz or less with approximately 50% duty cycle.

DC OFFSET VOLTAGE TEST (FOR FAN SPEED CONTROL):

Method
One sample, of the fan speed controller with electrical load, from end product, was subjected to this test. The controller was mounted and operated as intended in service. The test included varying the fan speed control over its full range and varying the trim component (variable resistor) to obtain all possible conditions of operation. If necessary, several tests were conducted to determine the setting of the trim component.

The output voltage of a semiconductor-type fan speed control, across test load (motor) is to be measured.

Test Equipment
A voltmeter with a damped frequency response in the 0 to 120 Hz range was used to measure the dc voltage across the load(motor) and shall be calibrated laboratory type.

Basis For Acceptability
The output voltage from a semiconductor-type fan speed control shall not have a dc voltage exceeding 2 volts.

SAMPLE SELECTION GUIDE

IN FACTORY TESTS

A. Motor:

– Winding Resistance Measurement:
B. Transformer:
– Dielectric Voltage Withstand Test (Transformer):
C. Class 2 Transformer:
– Maximum Output Voltage Test:
– Dielectric Voltage Withstand Test (Transformer):
D. Fan Speed Control:
–    DC Offset Voltage Test

Parts/Components Under Test

Group No.| Product Designation (Cat. No., Model. No.)| Procedure Section or

Report Date

|

Part/Compo nents

Name (#)

|

Item No.

|

Fig. Or Ill.

No.

---|---|---|---|---|---
TABLE INDEX TO WITNESS TESTING| A| B,C| C| D
---|---|---|---|---
Winding Resistance Measurement| Dielectric Voltage Withstand Test(Transformer)| Maximum Output Voltage Test| DC Offset Voltage Test
Product, Model| Group(s)| Nominal resistance, ohm| Indicate Dielectric Voltage, V(#)| Secondary Output Terminals to be tested| Electrical Loads (indicate locked rotor, resistive, and

electrical rating)

(#) – Refer to test voltage in Dielectric Voltage Withstand test.

Heaters, Miscellaneous (KSOT)

APPENDIX A

INSTRUCTIONS TO THE INSPECTOR FOR EXAMINATION OF PRODUCT

INSPECTOR:
The products selected for inspection shall be examined for the applicable features of Appendix A and for the features in the specific description.

INTERNAL WIRING
Protection of Wiring – Conductors shall be examined for evidence of damage. All conductor and conductor insulation in the product shall be protected from damage which can result from contact with heat sources, (including lamps, heating elements, etc.) and with any rough, sharp or moving part. Protection may be achieved by securing, segregating or routing the wire away from such parts or assemblies. Assemblies which clamp or squeeze wire insulation shall not be used unless described in the Procedure.

Internal wiring which might make contact with metal parts shall be protected from sharp metal edges. This may be accomplished by rounding or deburring the metal, use of a Recognized Component bushing, or other construction described in the Procedure. Faulty practices which can cause damage to conductors and/or conductor insulation include:

• A. Improper application of crimped connectors.
• B. Improper insulation removal.
• C. Overheating of conductor insulation because of routing or contact with hot surfaces during or after installation.
• D. Use of wire in which the insulation has been cut, cracked, crushed, abraded, etc.

Loose Strands
Ends of stranded conductors shall have all strands contained to prevent contacting of, or reduction of spacing to, other live parts or dead metal.

Typically, this can be accomplished by:

• A. Tinning.
• B. Inserting properly into suitable wire connectors.
• C. Crimped connectors and/or eyelets with the crimp containing all strands.
• D. Solder lugs.

Solder Connections
All solder connections shall be made mechanically secure before soldering.

Some typical examples of mechanical securement are:

• A. Twisting wire around a solder post which has a change in dimension or restriction so unsoldered wire will not slip off post.
• B. Inserting wire through an opening.

SECUREMENT OF PARTS
In the mounting or supporting of fragile insulating parts, screw or other fastenings should not be tight enough to cause cracking or breaking of these parts with expansion and contraction. Generally, the fastening of such parts should be snug. Uninsulated live parts, components which support live parts, and dead metal parts, shall be prevented from rotating, or shifting if movement will result in twisting or stress of internal wiring or connections, or spacings being reduced below that specified in the Procedure.

A switch, a lampholder, an attachment plug receptacle, a motor attachment plug cap, or other component subject to handling by the user shall be mounted securely and prevented from rotating.

Exception:
Based on engineering considerations certain considerations of securely mounted push button or plunger type switches, and lampholders of the type in which the lamp cannot be replaced (such as a neon pilot or indicator light in which the lamp is sealed in a non-removable jewel) may be excepted from the above. These constructions are described in the Procedure. However, in no case will unacceptable spacings be allowed.

Some means commonly used to prevent movement are:

• A. Lockwasher.
• B. Matched keying of the component and its mounting.
• C. Two or more fasteners (screws, rivets, pins, etc.)
• D. Strap, clip, or pin fitted into an adjacent part.
• E. Physical barrier (molded boss, side of enclosure, adjacent component, etc.) which bears against the component.

Heating Elements
A heating element shall be supported in the manner described in the individual Procedure section.

CASUALTY CONSIDERATION
Except as described, an appliance shall have no sharp edges, burrs, points, or spikes which may cause injury during use or during cleaning operations.

LAMPHOLDER CONNECTION
All screwshells of lampholders shall be connected to the same conductor of the supply circuit. (Also see “Polarized Appliances” if applicable.)

POLARIZED APPLIANCES
An appliance intended for permanent connection to the source of supply and having an identified terminal or lead; and an appliance employing a power supply cord with a polarized attachment plug cap (excluding 250 volt, 2-pole and 250 volt, 3-pole, 3-phase), utilizing the components indicated, shall have the components wired as follows:

Lampholders and Receptacles
The screw shell (identified) terminal lead of a lampholder, and the identified terminal or lead of a receptacle, shall be connected to the identified (grounded) conductor or terminal within the product.

Switches (Single Pole)
Unless otherwise specified in the Procedure, a manual single pole switch, and an automatic control with a marked “off” position, shall not be connected to the identified grounded conductor.

GROUNDING

Cord Connected Appliance
The equipment-grounding conductor of the  flexible cord:

• A. Shall be finished to show a green color or green with one or more yellow stripes;
• B. Shall be connected to the grounding member of the attachment-plug cap; and
• C. Shall be conductively connected to (1) all exposed dead metal parts of the product and to (2) all dead metal parts within the enclosure that are specified in the description as being connected to the grounding conductor.
  The grounding-conductor shall be connected by a screw or other reliable means if described in the Procedure, which serves no other purpose and which is not liable to be removed during any servicing operation. Solder alone shall not be used for securing this conductor.

NOTE :

1. The grounding member of the attachment-plug cap mentioned in Item B of the preceding paragraph shall be fixed in position with respect to the cap.
2. The screw mentioned in Item C of the preceding paragraph shall be of a corrosion-resistant metal or shall be protected against corrosion.

Permanently Connected Appliance
In a permanently-connected appliance  (1) all exposed metal parts, and (2) all dead metal parts within the enclosure which are specified in the description as being connected to the grounding conductor, shall be conductively connected to:

• A. The point of the enclosure at which the metal raceway of the power supply circuit will be connected, and
• B. The equipment-grounding field-wiring terminal or lead. (Only necessary in an appliance intended for permanent connection to the power supply by means other than a metal-enclosed wiring system such as nonmetallic-sheathed cable.)

Heaters, Miscellaneous (KSOT)
The equipment-grounding terminal or grounding lead shall be connected to the frame or enclosure by a positive means, such as by a bolted or screwed connection. The grounding connection shall reliably penetrate nonconductive coatings, such as paint or vitreous enamel. The grounding point shall be so located that it is unlikely that the grounding means will be removed during normal servicing.

A wire-binding screw intended for the connection of an equipment-grounding conductor shall have a green-colored head that is hexagonal shaped, slotted, or both. A pressure wire connector intended for connection of an equipment grounding conductor shall be green colored, or be identified by the marking “G”, “GR”, GRND”, “Ground”, “Grounding”, or the like. Or, if authorized in the Procedure, it may be identified by a suitable marking on a wiring diagram on the appliance.

The surface of an insulated lead intended solely for the connection of an equipment-grounding conductor shall be green or shall be green with or without one or more yellow stripes.

BONDING
Except where specifically noted in the Procedure, bonding of internal dead metal parts to the enclosure for grounding purposes shall be accomplished by a positive means such as clamping, riveting, bolting or screwed connection. The bonding connection shall reliably penetrate any nonconductive coatings such as paint or vitreous enamel.

MARKING
The appliance shall be plainly marked where it will be readily visible after it has been installed as intended, and shall include the name of the Listee (or recognizable portion thereof, or trade name or trademark if authorized in the Procedure), a distinctive catalog number or equivalent designation, and the electrical rating.

A portable appliance may have the marking located anywhere on the product provided that tools are not needed to gain access to the nameplate. Special markings (other than those described above) when required shall be as specified in the Procedure.

INSTRUCTIONS TO THE INSPECTOR

FOR EXAMINATION OF PRINTED WIRING BOARDS PRINTED WIRING BOARD ASSEMBLIES
As part of the inspection of the products covered by this Procedure, inspect the printed wiring boards and/or the printed wiring board assemblies employed in the product as indicated below.

Printed Wiring Boards
When printed wiring boards are received at the factory without the components mounted and soldered in place, an inspection as outlined below shall be conducted as follows:

• A. The printed wiring board shall be as specified in this Procedure.
• B. If the soldering operation is performed at the factory and the soldering temperature and dwell time are given in the Procedure, the temperature and dwell time shall also be checked to determine that they do not exceed the limits specified.

Printed Wiring Board Assemblies
If the printed wiring boards are received at the factory with the components already mounted and soldered in place, (“Assemblies”) an inspection shall be conducted as follows:

• A. The printed wiring board shall be as specified in the Procedure.
• B. A visual examination shall be made for mechanical damage or evidence of exposure to excessive temperatures that may have occurred during the soldering operation. The base material and the conductors shall be examined for unacceptable features as indicated below.

Conductors, Terminal Pads, and Tabs

• (a) Reduction in cross-section, such as scratches, nicks, pin holes, tearing.
• (b) Loosening or lifting of printed wiring conductor, pad, or tab from the base material.
• (c) Sections missing or damaged
• (d) Blistering
• (e) Breaks

Base Material

• (a) Warping
• (b) Cracking
• (c) Charring, blistering, or other heat damage due to solder process
• (d) Delamination

Sample Selection
Samples of printed wiring boards and/or printed wiring board assemblies shall be selected at random as shown under “First Selection” in the following table. The lot is to be rejected when any one of the unacceptable features is noted.

+ – A lot comprises all printed wiring board assemblies of the same type++ at the manufacturer’s factory at the time of the inspector’s visit, which have not been previously checked by the inspector. A lot may also comprise all of the same type++ since the inspector’s previous visit or inspection.

++ – A type is a printed wiring board assembly meeting all the following:

1. Same vendor who mounts and solders the components
2. Same board manufacturer and type or catalog number
3. Same size
4. Same pattern
5. Same components

Resubmittal of Rejected Lots
The manufacturer may want to screen out all printed wiring boards or printed wiring board assemblies in the rejected lot and resubmit it. The inspector shall then select samples for inspection in accordance with the subcolumn headed “Reselection,” based on the number in the original lot size. When any one of the boards of the resubmitted lot is noted to be unacceptable in accordance with the criteria stated above, the lot shall be rejected and may not be used in the Listed or Recognized product.

Heaters, Miscellaneous (KSOT)

APPENDIX B
INSTRUCTIONS TO THE INSPECTOR FOR SAMPLE PICK UP RESERVED FOR FUTURE USE

APPENDIX C
INSTRUCTIONS FOR FOLLOW-UP TESTS AT UL RESERVED FOR FUTURE USE

APPENDIX D
INSTRUCTIONS FOR TESTS AND/OR INSPECTION AT THE FACTORY INSPECTOR

INSPECTOR
The manufacturer is required to have the test equipment specified below. During the regular visits to the factory, verify that the instruments have been calibrated and the equipment is functioning properly, and except as noted on Page 3, that the manufacturer is performing the Dielectric Withstand Test on 100% of production.

Also, review the manufacturer’s records to assure that the test is being conducted and appropriate action is taken with respect to failures and rejections.

RESPONSIBILITY OF THE MANUFACTURER

1. Except as noted on Page 3, one hundred percent of production of each appliance covered by this Procedure shall be subjected to the Dielectric Withstand Test, Method I or Method II.
2. Periodically, the manufacturer shall determine that the test equipment is functioning properly.
3. The instruments used for this test shall be calibrated at regular intervals (at least once annually).

MANUFACTURER’S TEST EQUIPMENT:

The Dielectric Test equipment used by the manufacturer shall contain the following features:

1. The output transformer shall be rated 500 volt amperes or greater, or there shall be a voltmeter across the output terminals.
2. There shall be a visible indication (to the operator) of the test voltage (voltmeter, lamp, etc.)
3. There shall be either a visible or audible means (to the operator) of indicating a breakdown.
4. There shall be manual external reset switch which must be operated following a breakdown or there shall be provision to automatically reject the failed unit.

TEST TO BE CONDUCTED:

DIELECTRIC WITHSTAND TEST

General
For either test, the appliance may be in the heated or unheated condition.

• Method I
  A 1000 volts, rms 60 Hz, essentially sinusoidal potential, shall be applied for one minute between live parts and dead metal parts.

• Method II
  Alternatively, a 1200 volts rms 60 Hz essentially sinusoidal potential shall be applied for one second between live parts and dead metal parts.

Basis For Acceptability
Each appliance shall withstand the applied potential without breakdown for the required time duration.

MANUFACTURER’S RECORDS:
The manufacturer shall maintain records of test performance and corrective action taken on rejections. These records shall be readily available to the inspector.

GENERAL PRODUCT COVERED:
Heaters, Specialty. The construction features described in this Section General apply to all products covered by this volume unless otherwise specified in a specific section.

CONSTRUCTIONAL DETAILS:

Abbreviations

C-UL Requirement
Each appliance which has been evaluated to the Canadian Standards shall be marked with the UL Mark for Canada. “CN” indicates that the product has been evaluated to Canadian requirements. The Field Representative shall confirm that the product has a Canadian UL Listing Mark or an Equivalent identifier.

Electrical Spacings
 Spacings as noted below are maintained through air and over surface between live parts of opposite polarity and between live parts and dead-metal parts.

MINIMUM ACCEPTABLE SPACINGS AT FIELD-WIRING TERMINALS

In.

|

mm

|

In.

|

mm

Between live parts of opposite polarity and between a live part and a dead- metal part, other than the enclosure, which may be grounded| 0-250

251-600

| ¼ 3/8| 6.4

9.5

| 3/8

½

| 9.5

12.7

Between a live part and the enclosure| 0-600| ½| 12.7| ½| 12.7

MINIMUM ACCEPTABLE SPACINGS THROUGH AIR OR OVER THE SURFACE AT POINTS OTHER THAN FIELD-WIRING TERMINALS OR INSIDE MOTORS +

Parts Involved| Potential Involved in Volts|

In.

|

mm

---|---|---|---
Between uninsulated live-metal parts of opposite polarity, and between a rigidly mounted uninsulated live- metal part and a dead-metal part that either is exposed for persons to contact or may be grounded| 0-250

251-600

| 1/16

¼ (++)

| 1.6

6.4

+ –  If an uninsulated live part is not rigidly supported, or if a movable dead-metal part is in proximity to an uninsulated live part, the construction shall be such that at least the minimum acceptable spacings of 1/16 in. (1.6 mm) is maintained under all operating conditions and under all normal conditions of handling.

++ – A spacing of 1/16 in. (1.6 mm) is permissible at the heating element only, in a heater rated for 300 V or less.

Corrosion Protection
All iron and steel parts used for casing, backing or support of electrical components are suitably protected against corrosion by enameling, galvanizing, plating or the equivalent. Cast iron parts are not required to be protected against corrosion.

Internal Wiring
Unless otherwise specified, all internal wiring is R/C (AVLV2), rated minimum 300 V, 80°C. Wiring shall be protected from sharp edges, moving parts, and other agents that might damage the insulation.

Internal Wiring Terminations
All quick-connect type terminals and crimp type wire connectors are copper alloy. Insulated terminals and connectors are Listed. Wire connectors are suitable for the number and gauge of wires involved. Quick-connects are provided with a detent which engages hole or recess in component terminal to provide secure snap action connection. Open end type spade connectors are provided with up-turned ends or are “C” shaped such that they snap-fit around a terminal screw.

Sharp Edges
All edges, projections and corners of the enclosure, frame, guards and the like are smooth, well rounded and free from burrs.

Wire Connections
Internal wiring connections are made using crimp-on connectors, solder, or wire connectors, and shall not be subjected to stress or movement during normal product operation. Solder connections shall be made mechanically secure prior to soldering, and tack soldering shall not be used. Wire connectors other than uninsulated crimp-on connectors shall be Listed or Recognized (ZMVV2), rated minimum 300 V, 80°C, suitable for the sizes and numbers of conductors secured, and applied with the tools recommended by the connector manufacturer.

Tubing and Sleeving
All electrical tubing and sleeving used to provide required electrical insulation or mechanical protection of conductors shall be Recognized (YDPU2), CN, rated minimum 300 V, 125°C or (UZFT2), CN, rated minimum 300 V, 200°C unless otherwise specified.

Printed Wiring Boards
Any R/C printed wiring board (ZPMV2), used where solder time and temperature are not exceeded. See the individual sections for 94 flame rating and minimum temperature rating. Unless otherwise specified, all internal wiring and components are mechanically secured through openings of wiring board and soldered.

Separation of Circuits
The following applies for all products:

• Insulated conductors of one circuit (line or low) are so routed and reliably retained such that they cannot contact uninsulated live parts of the other circuit.
• Insulated conductors of one circuit are so routed and retained such that they cannot contact insulated conductors of the other circuit unless the insulation of both conductors is suitable for the highest potential (volts) involved.
• Uninsulated live parts of low and line voltage circuits are spaced from one another as though they were parts of opposite polarity.

For products having provision for field installed wiring the following additional item applies:

In a compartment intended for field installation of conductors that contains provision for connection of Class 2 or Class 3 circuit conductors, and Class 1, power, or lighting circuit conductors, a barrier is provided to separate the conductors of the different circuits, or the arrangement of the compartment is such that a minimum spacing of 1/4 in. (6.4 mm) can be maintained between the conductors of the different circuits including the conductors to be field installed.

Grounding
For all products where grounding is required or provided, all dead-metal parts are reliably connected to the point of attachment of the supply grounding means by metal-to-metal contact, assembly screws or welds.

Lock washers, or equivalent, are provided on assembly screws/nuts where painted surfaces are involved to reliably break the paint. Grounding jumper leads, if employed, are either 1) of the same gauge size as the leads to the component, 2) of the same gauge size of the power supply cord or 3) as noted in the individual section.

Sheet metal screws shall not be used for:

1. Field connection of equipment grounding conductors to an enclosure; and
2. Connection of a factory-provided grounding lead to an enclosure.

A sheet metal screw is defined as a screw with a thread pitch that exceeds the thickness of the sheet metal and is designed to engage an unextruded, unthreaded hole in the metal.

Cord-Connected
For cord-connected products provided with a grounding type attachment plug cap, the grounding conductor of the power supply cord is connected to the enclosure of the product by a separate screw which serves only to secure grounding conductors and which is not likely to be removed during  servicing.

Permanently Connected
For products intended to be field wired, an opening in the metal enclosure for installation of a metal enclosed wiring system is the point of attachment of the equipment ground. An equipment ground terminal or lead may also be provided. If provided, a lead shall have insulation that is green in color or is green with a yellow tracer. A screw type terminal shall have a green head that is slotted, hexagonal or both. A pressure type terminal is marked “G”, “GR”, “Ground” or the like.

Components Mounting
All components shall be securely mounted and prevented from rotation by a means other than friction. For example, components may be mounted by two screws or a single screw and locator pin. Stem mounted components may be mounted in keyed openings, openings with flat sides or provided with a lock washer on the stem between the component body and its mounting surface.

Supply Connections

For Cord connected:
Unless specified otherwise in individual section, the attached power supply cords and separable cord sets external length is as specified below. External length includes the attachment plug and, for cord sets, the connector body.

Type of Heating Appliance

| Length in Ft (m)
---|---
Minimum| Maximum
Counter-top, bench-top, or table-top appliances intended for household use| 2.0+ (0.6)| 7.0| (2.1)
Soldering iron, guns, wood burning pencils| 4.5 (1.4)| –| –
Soldering station| 2.5+ (0.8)| –| –
Stock tank water heater, (except flotation type), bucket heater, deicer and similar appliances used out of doors (TW-405)| 2.0 (0.6)| 6.0| (1.8)
All other heating appliances intended for outdoor use| 1.0++ (0.3)| –| –
All heating appliances not covered above| 6.0 (1.8)| –| –

• + – Cord length less than 4-1/2 ft (1.4 m) is provided with short cord instructions as indicated under the Instruction Manual heading of this Sec. Gen.
• ++ – Cord length less than 6 ft (1.8 m) is provided with additional marking and instructions, see the individual section for the specifics.

For Permanently-Connected:
Products intended to be permanently connected to the electrical supply are provided with leads or wiring terminals. Leads are a minimum of 6 in. long. See individual sections for gauge.

Wiring terminals are:

1. pressure wire connectors mounted to prevent turning;
2. wire binding screws;
3. stud and nut combinations;
4. soldering lugs. Wire binding screws and stud/nut combinations are provided with a means to retain a conductor in place under the screw head/nut such as a cupped washer.

If leads are provided, one shall be white or natural grey in color, the other can be any color except white or green (with or without a yellow tracer). An equipment ground lead shall be green with or without a yellow tracer.

Polarization
Polarization is provided for all products with an attached or separable power supply cord which employ a manually operated, line connected, single pole switch for appliance “On/Off” operation. Polarization is also required for all products with a thermostat control which includes an “Off” marking.

If a product employs an Edison-base lampholder(s) and/or receptacle(s), see individual section for construction details. For products with polarization 1) the plug cap must be either a two blade type with one blade wider than the other or a three blade (grounding) type and 2) the “On/Off” switch must be connected to the unidentified conductor of the power supply cord. The unidentified conductor of a two blade type is not ribbed and provided at narrow blade. The unidentified conductor of three blade type is black.

Polarization instructions are provided with all products which employ a polarized two blade plug cap. Separable (detachable) power supply cords which require polarization employ both plug cap and receptacle of a polarized type.

Product Markings
Generally, all described markings are of a permanent type such as die-stamped, silk-screened, or ink-stamped with permanent type ink directly onto the product or on separate plates secured by mechanical fasteners. Markings may also be molded-in in raised letters or appear as adhesive secured labels.

All required markings shall be etched, molded, die stamped, paint stenciled, or provided on a R/C PGDQ2 and/or PGAA, suitable for application to the mounting surface involved, and rated minimum 60°C. See the individual sections for the locations of the markings.

Nameplate Markings
The nameplate marking contains the Listee’s name or File No., the product’s catalog (model or part) number, date code and electrical rating. The date of manufacture may be abbreviated with a date code as follows:

“One” or “Zero”; M cab be 0 to 9
Y – one number of the Year of manufacturing

For example: 3Z7 represents July 2023.

Cautionary Markings
Described markings in the individual sections that begin with the signal word “Caution”, “Warning” or “Danger” shall comply with the following: the heights of all letters in the Marking are 3/32 in. (2.4 mm) high minimum and the signal word “Caution”, “Warning” or “Danger” shall be more prominent than the remaining text of the marking. The letters in the remainder of the text are not less than 1/16 in. (1.6 mm) high if provided with a background of contrasting color.

Instruction Markings
Generally an Instruction Manual is provided for all products which require warning, cautionary or other specific markings; excluding nameplate markings, noted in the individual section. The text of these markings is duplicated in the manual and elaborates on the potential risks involved.

Short Cord Instructions
Short cord instructions are provided in the instruction manual for household heating appliances and commercial soldering stations with an attachable or detachable power supply cord less than 4-1/2 ft (1.4 mm). The instructions include the following cord information:

1. A short power supply cord is provided to reduce the risk resulting from becoming entangled in or tripping over a longer cord.
2. Extension cords are available and may be used if care is exercised in their use.
3. If an extension cord is used, (1) the marked electrical rating of the extension cord should be at least as great as electrical rating of the appliance, and (2) the longer cord should be arranged so that it will not drape over the counter or table top where it could be pulled on by children or tripped over unintentionally.

Polarization Instructions
If the product is provided with a polarized two blade plug cap, the instruction manual includes the following:

“This appliance has a polarized plug (one blade is wider than the other). To reduce the risk of electric shock, this plug will fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician. Do not modify the plug in any way.”

CERTIFICATE  OF  COMPLIANCE

• Certificate Number: UL-US-2332183-0
• Report Reference: E535516-20230807
• Date: 7-Aug-2023
• Issued to: This is to certify that Shenzhen Street Cat Technology Co., Ltd 1st Floor, Building 38, Xinmu Xinyuan Industrial Park, Pinghu Street, Longgang District, Shenzhen Shenzhen, GD China KSOT – Heaters, Specialty representative samples of See Addendum Page for Product Designation(s). UL-US-2332183-0 Have been evaluated by UL in accordance with the Standard(s) indicated on this Certificate.
• Standard(s) for Safety: UL 499, Edition 14, Issue Date 2014-11-07, Revision Date 2022-06-14

E535516- 2023

Additional Information: See the UL Online Certifications Directory at  https://iq.ulprospector.com for additional information

This Certificate of Compliance indicates that representative samples of the product described in the certification report have met the requirements for UL certification. It does not provide authorization to apply the UL Mark. Only the Authorization Page that references the Follow-Up Services Procedure for ongoing surveillance provides authorization to apply the UL Mark.  Only those products bearing the UL Mark should be considered as being UL Certified and covered under UL’s Follow-Up Services.  Look for the UL Certification Mark on the product.

Deborah Jennings-Conner, VP Regulatory Services UL LLC
Any information and documentation involving UL Mark services are provided on behalf of UL LLC (UL) or any authorized licensee of UL. For questions, please contact a local UL Customer Service Representative at http://ul.com/aboutul/locations/

CERTIFICATE  OF  COMPLIANCE

• Certificate Number: UL-US-2332183-0
• Report Reference: E535516-20230807
• Date: 7-Aug-2023

This is to certify that representative samples of the product as specified on this certificate were tested according to the current UL requirements

UL LLC
Any information and documentation involving UL Mark services are provided on behalf of UL LLC (UL) or any authorized licensee of UL. For questions, please contact a local UL Customer Service Representative at http://ul.com/aboutul/locations/

CERTIFICATE  OF  COMPLIANCE

• Certificate Number: UL-CA-2327696-0
• Report Reference: E535516-20230807
• Date: 7-Aug-2023

Issued to: Shenzhen Street Cat Technology Co., Ltd 1st Floor, Building 38, Xinmu Xinyuan Industrial Park, Pinghu Street, Longgang District, Shenzhen Shenzhen, GD China This is to certify that representative samples of KSOT7 – Heaters, Specialty Certified for Canada See Addendum Page for Product Designation(s). Have been evaluated by UL in accordance with the Standard(s) indicated on this Certificate.

Standard(s) for Safety: CSA C22.2 NO. 64-19, 8th Ed, Issue Date: 2019-05-01

Additional Information: See the UL Online Certifications Directory at https://iq.ulprospector.com for additional information

This Certificate of Compliance indicates that representative samples of the product described in the certification report have met the requirements for UL certification. It does not provide authorization to apply the UL Mark. Only the Authorization Page that references the Follow-Up Services Procedure for ongoing surveillance provides authorization to apply the UL Mark. Only those products bearing the UL Mark should be considered as being UL Certified and covered under UL’s Follow-Up Services.

Look for the UL Certification Mark on the product.

CERTIFICATE  OF  COMPLIANCE

• Certificate Number: UL-CA-2327696-0
• Report Reference: E535516-20230807
• Date: 7-Aug-2023

This is to certify that representative samples of the product as specified on this certificate were tested according to the current UL requirements

• File: E535516
• Project: 4790904603

August 7, 2023 REPORT On HEATERS, SPECIALTY Shenzhen Street Cat Technology Co., Ltd Shenzhen, China

DESCRIPTION

PRODUCT COVERED:
USL, CNL – Hand Warmer, Model UT3055

ELECTRICAL RATING:

• Model No. Electrical Ratings
• UT3055: 3.7 VDC, Input: 5 VDC/1 A

TECHNICAL CONSIDERATIONS
(NOT FOR FIELD REPRESENTATIVE’S USE):
The lithium battery powered hand warmer covered by this report is intended for indoor or outdoor use, however it is not intended to be wetted. It consists of one brass alloy ribbon wire foil pattern type heaters, a solid-state charging circuit, and one integral non-replaceable Lithium DC cell. The entire assembly is mounted within a thermoplastic chassis, which serves as the enclosure of battery cells. Charging is accomplished by connection to a standard USB port via a manufacturer provided cable.

• USL indicates investigation to the UL Standard specified in Test Record Summary.
• CNL indicates investigation to the Canadian Standard specified in Test Record Summary.

CONSTRUCTION DETAILS:

Section General
The following construction items are described in the Section General:

PRODUCT MARKINGS:
All required markings shall be etched, molded, die stamped, paint stenciled, or provided on a label, R/C (PGDQ2/8), suitable for application to the mounting surface involved, and rated minimum 80°C. In addition to Sec.Gen., the following markings shall be provided on the product:

“WARNING
To reduce the risk of injury, user must read instruction manual” or equivalent. The word “WARNING” shall be in capital letters not less than 2.4 mm high and shall not be separated from the cautionary statement. “For use only with Listed Class 2 Power Unit” or the equivalent marked on the product or in the instruction manual. Either the USB symbol “ ” or the abbreviation “USB” in proximity to the connection point.

Illustrations
The following illustrations are included in this report.

General
The general design, shape, and arrangement shall be as illustrated in the following figures, except where variations are specifically described.

HAND WARMER, MODEL UT3055 – FIGS. 1 – 3

General
Fig. 1 shows the overall view, Fig. 2 shows the disassembled parts view, Fig. 3 show the PWB of Hand Warmer, Model UT3055.

1. Enclosure Case
   Two pieces construction and secured to each other by integral R/C (QMFZ2), FORMOSA CHEMICALS & FIBRE CORP PLASTICS DI (E162823), Type AC310(+), rated V-0, 60°C, 1.0 mm thick minimum. Dimension detail refer to Illustration. Provided with opening for USB Port, Switch Button, and Heater Plate.

2. Heater
   Consist of one brass alloy ribbon wire foil trace pattern type heaters, Overall 17 mm x 36 mm, which sandwiched between two layers of PET insulated film and adhered to surface of Heater Plate. The heater terminals are secured to PWB mechanically prior to soldering.

3. Heater Plate
   Aluminum alloy 0.6 mm thick. Dimension detail refer to Illustration, secured to Enclosure by physical fit and adhesive.

4. Printed Circuit Board
   R/C (ZPMV2), rated V-0, 105°C. Measured overall 16.9 by 73.1 by 1 mm thick. Secured to Enclosure by screws.
   Secured with following components:
   

   • Charging IC (U2)
     Type GB4056A-1A by Guangxi Guiyue Semiconductor Technology Co., Ltd.

   • Battery Protection IC (U4)
     Type XB5608A by Suzhou Saixin Electronic Technology Co., Ltd.

   • MCU (U3)
     Type PFS122 by Yingguang Technology , Ltd.

   • Mosfet (Q4)
     Type 2312-N-SOT23 by Shenzhen Jinyu Semiconductor , Ltd.

   • Tact Switch (K2)
     One provided.

   • Others
     Refer to 2 for details.

5. Lithium Battery
   R/C (BBCV2), Dongguan Cham Battery Technology Co Ltd.(MH29650), Model CMICR18650F8, rated 3.7 V dc, 2.6 Ah, 4.25 V upper limit charging voltage, 2.55 A maximum charge current. The connections are insulated by insulating film with adhesive.

6. USB type C Connector Port
   Provided as input charging port from external ITE source of supply. Secured to PCB mechanically prior to soldering.

7. Internal Wiring
   R/C (AVLV2), rated min. 26 AWG, 300 V, 80°C.

8. Charging Cord
   R/C(AVLV2) or Listed, rated VW-1 or FT-1, maximum 3.05 m length. Provided the integral USB connector.

Figure-1

Figure-2

Figure-3

The following Page(s) are related to Illustration-1. The next supplement, if applicable, will be identified with a new Supplement Page Heading.

FAQ’s

What should I do if I have questions or need to report inaccuracies?
If you have any questions or need to report inaccuracies, reach out to your UL representative or find UL contact details for your local Customer Service Department at https://www.ul.com/about/locations.

Can I copy or disclose the Follow-Up Service Procedure?

No, the Follow-Up Service Procedure contains confidential information and should not be copied or disclosed unless specifically allowed. If requested by UL, the procedure should be returned promptly.

Who is responsible for ensuring that only compliant products bear the authorized Marks?

It is the responsibility of the Applicant, Manufacturer(s), and Listee/Classified Company to ensure that only products meeting the specified requirements bear the authorized Marks of UL LLC or any authorized licensee of UL LLC.

What happens if I use the authorized Marks without meeting the requirements?

Unauthorized use of the authorized Marks is strictly prohibited. Ensure that your product meets the specified requirements before using the Marks to avoid any legal or compliance issues.

How can I stay informed about updates or revisions to the Follow-Up Service Procedure?

It is important to stay informed about any updates or revisions to the Follow- Up Service Procedure. Regularly check for communications from UL or visit the UL website for the latest information.

What records should I maintain to demonstrate compliance with the Follow-Up Service Procedure?

Maintain accurate records of your compliance, including test records, certificates of compliance, and any other relevant documentation. These records will help demonstrate ongoing compliance during follow-up services.

References

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