Cal Test CT4432 10 kV High Voltage Oscilloscope Probe User Manual

Cal Test CT4432 10 kV High Voltage Oscilloscope Probe

Specifications

• Product: CT4432 10 kV High-Voltage Oscilloscope Probe
• cTUVus Listed
• Manufacturer: Cal Test Electronics
• Country of Origin: Taiwan
• Warranty: Limited one-year warranty

Product Usage Instructions:

Safety Information

Before using the CT4432 10 kV High-Voltage Oscilloscope Probe, please read and understand the safety information provided in the user manual.

Usage Precautions

• Ensure the probe is properly connected to the oscilloscope.
• Avoid exposing the probe to moisture or extreme temperatures.
• Do not attempt to repair the probe yourself; return it to the manufacturer if an issue arises.
• Always follow the instructions provided by Cal Test Electronics for optimal performance.

IEC Measurement Category & Pollution Degree Definitions:
Refer to the user manual for detailed information on IEC measurement categories and pollution degree definitions to ensure safe usage of the probe.

Measurement Instructions
Follow these steps for accurate measurements with the CT4432 10 kV High- Voltage Oscilloscope Probe:

1. Connect the probe to the oscilloscope input.
2. Ensure proper grounding of both the probe and oscilloscope.
3. Select the appropriate voltage range on the oscilloscope.
4. Adjust probe settings as needed for the specific measurement.
5. Take measurements according to your testing requirements.

FAQ

• Q: What is the warranty period for the CT4432 10 kV High-Voltage Oscilloscope Probe?
  A: The probe comes with a limited one-year warranty from the date of original purchase. Please refer to the user manual for warranty terms and conditions.

• Q: Can I repair the probe myself if it malfunctions?
  A: No, it is recommended to return the probe to the manufacturer if any issues occur. Unauthorized repairs may void the warranty.

CT4432
10 kV High-Voltage Oscilloscope Probe, cTUVus Listed

User Manual

Notices

Copyright © 2021 Cal Test Electronics, Inc. All rights reserved.
Unauthorized duplication of this documentation material is strictly prohibited. Users are permitted to duplicate and distribute this documentation for internal educational purposes only. Cal Test Electronics is governed by United States and international copyright laws.

• Made in Taiwan
• User Manual Part Number
• 451-051-001 Rev. B
• Available in electronic format only
• Published by:
• Cal Test Electronics, Inc.
• 22820 Savi Ranch Parkway
• Yorba Linda, CA 92887 USA

Warranty

LIMITED ONE-YEAR WARRANTY
Cal Test Electronics, Inc warrants these products to be free from defective material or workmanship for a period of 1 year from the date of original purchase. Under this warranty, Cal Test Electronics, Inc is limited to repairing this product when returned to the factory, shipping charges prepaid, within the warranty period.
Units returned to Cal Test Electronics, Inc that have been subject to abuse, misuse, damage, or accident, or have been connected, installed, or adjusted contrary to the instructions furnished by Cal Test Electronics, Inc, or that have been repaired by unauthorized persons, will not be covered by this warranty.
Cal Test Electronics, Inc reserves the right to discontinue models, change specifications, price, or de-sign of this device at any time without notice and without incurring any obligation whatsoever.
The purchaser agrees to assume all liabilities for any damages and/or bodily injury which may result from the use or misuse of this device by the purchaser, his employees, or agents.
THIS WARRANTY IS IN LIEU OF ALL OTHER REPRESENTATIONS OR WARRANTIES EXPRESSED OR IMPLIED AND NO AGENT OR REPRESENTATIVE OF CAL TEST ELECTRONICS, INC IS AUTHORIZED TO ASSUME ANY OTHER OBLIGATION IN CONNECTION WITH THE SALE AND PURCHASE OF THIS DEVICE.

Compliance Information

Safety
EC Declaration of Conformity – Low Voltage
Compliance was demonstrated to the following specification as listed in the Official Journal of the Euro-pean Communities: Low Voltage Directive: 2014/35/EU.

EN 61010-031:2015 Ed 2.0. Safety requirements for electrical equipment for measure-ment, control and laboratory use – Part 031: Safety requirements for hand-held probe assemblies for electrical measurement and test.

U.S. and Canadian Recognized Agency Certification
The probe is has been certified by TUV Rheinland Taiwan Ltd. (TUV) to conform to the following safety standard and bears the cTUVus mark.

IEC 61010-031:2015 Ed. 2.0. Safety requirements for electrical equipment for mea-surement, control and laboratory use – Part 031: Safety requirements for hand-held probe assemblies for electrical measurement and test.

Environmental
Restriction of Hazardous Substances (RoHS 2)
The product and its accessories conform to the Directive 2011/65/EU (RoHS 2) on the restriction of the use of certain hazardous substances in electrical and electronic equipment, inclusive of any modifica-tion and addendum to said Directive.

EN ISO 63000:2018 Technical documentation for the assessment of electrical and electronic products with respect to the restriction of hazardous substances.
China RoHS 2 refers to the Ministry of Industry and Information Technology Order No. 32, effective July 1, 2015. See “Hazardous Substances Disclosure Table” on page 19.

Product End-of-Life Handling
The equipment may contain substances that could be harmful to the environment or human health if im-properly handled at the product’s end of life. To avoid release of such substances into the environment and to reduce the use of natural resources, we encourage you to recycle this product to an appropriate system that will ensure that most of the materials are reused or recycled appropriately.

This product is subject to Directive 2012/19/EU of the European Parliament and the Council of the European Union on waste electrical and electronic equipment (WEEE), and in jurisdictions adopting that Directive, is marked as being put on the market after August 13, 2005, and should not be disposed of as unsorted municipal waste. Please utilize your local WEEE collection facilities in the disposition of this product.

Terms & Symbols

The following terms, symbols, and definitions, individually or combination may appear on the product or in this user manual.

Terms

CAUTION
A caution statement calls attention to an operating procedure, practice, or condition, which, if not followed correctly, could result in damage to or destruction of parts or the entire product.
WARNING
A warning statement calls attention to an operating procedure, practice, or condition, which, if not followed correctly, could result in injury or death to personnel.
NOTE
A note statement calls attention to an operating procedure, practice, or condition, which, should be noted before proceeding.

Symbols

CAUTION – Statements or instructions that must be consulted in order to find out the nature of the potential hazard and any actions which must be taken.
WARNING – HIGH VOLTAGE – possibility of electric shock.
The Conformitè Europëenne (CE) Mark is the European Union’s (EU) mandatory conformity marking for regulating the goods sold within the European Economic Area (EEA).

Safety Information

Usage Precautions

WARNING
The high-voltage probe is designed to prevent accidental shock to the operator when properly used. This operating note must be read and understood prior to using the probe. Improper procedure or incorrect analysis of the measurement situation can result in serious shock.

WARNING
This high-voltage probe must only be used by personnel who are trained, experienced, or otherwise qualified to recognize hazardous situations and who are trained to the safety precautions that are necessary to avoid possible injury when using such a device.

WARNING
When measuring higher frequency signals, be sure to comply with the Voltage vs Frequency Derating Curve. Do not apply to the input any potential that exceeds the maximum rating of the probe.

WARNING
This high-voltage probe is designed for use with Measurement Category other than II, III and IV only (formally CAT I). Do not use the probe for measurements performed on circuits defined by any other measurement category or transient overvoltages of more than 1500 V. Refer to IEC Measurement Category Definitions on page 9 for a definition of measurement categories.

WARNING
The ground lead is critical to the safe operation of the probe. Failure to make this connection when making high-voltage measurements may result in personal injury or damage to the probe or oscilloscope. This connection must always be made BEFORE the probe tip comes in contact with the high voltage and must not be removed until the probe tip has been removed from the high-voltage source.

WARNING
Do not exceed 60 seconds of contact between the probe and the circuit-under- test when measuring voltages ≥8 kV DC, ≥5 kV ACrms, or ≥15 kVpk-pk AC. It is recom-mended to wait 5 minutes between measurements.

WARNING
Hands, shoes, floor, and work bench must be dry. Avoid making measurements under humidity, dampness, or other environmental conditions that might affect safety.

WARNING
To avoid injury, remove jewelry such as rings, watches, and other metallic objects. Do not touch exposed connections and components when power is present.

WARNING
Do not work alone when working with high-Voltage Circuits.

WARNING
The probe is designed to be used in office-type indoor environments.

• Do not operate in the presence of noxious, corrosive, flammable fumes, gases, vapors, chemicals, or finely-divided particulates.
• Hands, shoes, floor, and workbench must be dry. Avoid making measurements under humid, damp, or other environmental conditions that might effect the safety of the measurement situation.
• The probe body should be kept clean and free of any conductive contamination. Refer to the section on cleaning.

WARNING
To reduce the risk of shock or fire:

• Connect the probe to the oscilloscope before connecting probe to the circuit under test. Disconnect the probe input from the circuit before disconnecting the probe from the oscilloscope.
• Do not exceed the voltage rating category rating of the probe. Use only accessories provided with probe.
• Keep finger behind the finger guard of the probe body.
• For your own safety, inspect the probe for cracks and frayed or broken leads before each use. If defects are noted, DO NOT use the probe.
• Keep the probe’s output cables away from the circuit under test, as they are not intended to be in contact with these circuits.

WARNING
It is advisable to turn the high-voltage source off before connecting or disconnecting the probe.

WARNING
Do not attempt to take measurements where the source and the test instrument chas-sis or return lead is not properly grounded.

IEC Measurement Category & Pollution Degree Definitions

Measurement Category (CAT) – classification of testing and measuring circuits according to the types of mains circuits to which they are intended to be connected.

• Measurement Category other than II, III, or IV: circuits that are not directly connected to the mains supply.
• Measurement Category II (CAT II): test and measuring circuits connected directly to ul-utilization points (socket outlets and similar prints) of the low-voltage mains installation..
• Measurement Category III (CAT III): test and measuring circuits connected to the distribution part of a building’s low-voltage mains installation.
• Measurement Category IV (CAT IV): test and measuring circuits connected at the source of the building’s low-voltage mains installation.

Pollution – addition of foreign matter, solid, liquid, or gaseous (ionized gases) that may produce a reduc-tion of dielectric strength or surface resistivity.
Pollution Degree 2 (P2)- only non-conductive pollution occurs except that occasionally a temporary conductivity caused by condensation is expected.

Introduction

Overview
The Cal Test CT4432 High-Voltage divider probe can be used with analog or digital oscilloscopes that have an input resistance of 1 MΩ (±1%) and nominal input capacitance between 5 and 50 pF. The CT4432 is a 1000:1 divider which extends the voltage measurement capability to 7 kV ACrms.

Features of the probe

• Up to 10 kV (DC + ACpeak) or 7 kV (ACrms)
• 40 MHz bandwidth (-3dB)
• ±3% accuracy
• IEC/EN 61010-031

Supplied Accessories

Table 1 CT4432 Accessory Replacements

Using Accessories

Round Tip & Hook Tip
Thread either the Round Tip or the Hook Tip onto the probe’s M5 tip stud and securely hand-tighten.

Flat Bar Tip
The end of the Flat Bar Tip can be clamped to the device-under-test (DUT). To secure the Flat Bar Tip to the probe, use the supplied M5 flange nut (8 mm wrench or nut driver) as show in Figure 3.

Optional Accessory
For connecting the probe to a Digital Multimeter (DMM) you can use the CT3197B High-Voltage Probe BNC Converter. The high-voltage probe converter allows impedance matching of the probe’s 1 MΩ out-put to a DMM’s 10 MΩ input. Usable with most quality DMMs, you can order this converter separately.

Measurement Instructions

Before connecting the probe for your measurement, read all the warnings in this section and all of the warnings in the section “Safety Information” on page 6.
Frequency compensate the probe to your oscilloscope prior to usage. See “Frequency Compensation” on page 14.

Steps

1. Whenever possible, turn the high-voltage source off before making any connections.

2. Connect the alligator ground clip lead to a good earth ground or reliable chassis ground.

3. Connect the probe’s BNC connector to the oscilloscope’s BNC output.

4. On the oscilloscope, select the desired volts/division range. If the oscilloscope has probe attenua-tion ration setting, set it to 1000:1, if available.
   WARNING
   Before turning on the high voltage source, make sure that no part of the person holding the prove is touching the device under test.

5. After confirming that the probe operator is not touching the device under test, turn on the high-volt-age source.

6. Measure the voltage under test and observe the waveform on the oscilloscope.
   WARNING
   Remember the actual voltage is 1000 times greater than the oscilloscope waveform if the probe attenuation has not been set to 1000:1.

7. Turn off the high voltage source.

8. Disconnect the probe tip from the high-voltage source.

9. Disconnect the probe’s ground clip lead.
   WARNING
   Disconnect the probe tip from the high voltage source BEFORE disconnecting the alligator ground clip lead.
   WARNING
   Do not exceed 60 seconds of contact between the probe and the circuit-under- test when measuring voltages ≥8 kV DC, ≥5 kV ACrms, or ≥15 kVpk-pk AC. It is recom-mended to wait 5 minutes between measurements.
   WARNING
   Do not attempt to take measurements from sources where the chassis or return lead is not grounded.
   WARNING
   The ground lead is critical to the safe operation of the probe. Failure to make this connection when making high-voltage measurements may result in personal injury or damage to the probe or oscilloscope. This connection must always be made BEFORE the probe tip comes in contact with the high voltage and must not be removed until the probe tip has been removed from the high-voltage source.
   WARNING
   Do not connect the ground clip to the high voltage source or the probe tip to the ground for any reason.
   WARNING
   Do not make any floating measurements with the probe.

Frequency Compensation

Use the following frequency compensation adjustments to compensate the probe for the oscilloscope’s input capacitance. You should preform this adjustment whenever you connect the probe to a different oscilloscope input channel or to a different oscilloscope.

Low Frequency Compensation Adjustment

1. Connect the probe to the oscilloscope.
2. Connect the probe tip to a square-wave function generator.
3. Adjust the function generator’s output to square-wave, 200 Hz frequency and 10 V amplitude.
4. Adjust the oscilloscope time base for approximately 2 ms/div so that you can see several waveform cycles.
5. Using supplied trimmer tool, adjust the Low Frequency Adjustment Point (Figure 5) for the flattest square-wave top. Figure 6 shows the correctly compensated waveform.

Specifications

The probe and oscilloscope should be warmed up for at least 20 minutes before any testing and the environmental conditions should not exceed the probe’s specified limits.

NOTE
All entries included in the following tables are characteristics unless otherwise stated.

Table 2 Safety Specifications

• Parameter Condition
• IEC/EN 61010-031:2015 : Measurement Category other than II, III, or IV (formally CAT I)

Table 3 Electrical Specifications (Not Warranted)

Parameter                                       Characteristic

Maximum Input Voltage

| 10 kV (DC + ACpeak) 7 kV (ACrms)
Maximum Loading Current| 100 µA
Attenuation| 1000x
Bandwidth| DC to 40 MHz (-3 dB)
Rise Time| ≤ 8.8 ns
Input Resistance| 100 MΩ ± 5%
Input Capacitance| 2.0 pF

Accuracy

| ± 3% (below 10 kV) DC

± 3% at 1 kHz VAC

± 3 dB 0 to 40 MHz VAC

Temperature Coefficient| ≤ 200 ppm/°C
Compensation Range| 5 pF to 50 pF

Table 4 Mechanical Specifications

Parameter                                      Characteristic

Alligator Clip Lead Length| 1 m (39”)
BNC Cable Length| 2 m (6.6 ft)
Operating Temperature| 0°C to 50°C (32°F to 122°F)
Storage Temperature| -20°C to 70°C (-4°F to 158°F)
Humidity| ≤ 80% RH @ 40°C (104°F)
Dimensions| 340 mm length, 75 mm wide, 75 mm hight
Weight| 250 g (0.55 lb)

Voltage Derating

The following graph shows the voltage verses frequency derating curve for the probe.

WARNING
When measuring higher frequency signals, be sure to comply with the Voltage vs Frequency Derating Curve. Do not apply to the input any potential that exceeds the maximum rating of the probe.

Cleaning

Clean only the exterior probe body and cables. Use a soft cotton cloth light moistened with a mild solu-tion of detergent and water. Do not allow any portion of the probe to be submerged at any time.

WARNING
Dry the probe thoroughly before attempting to make voltage measurements.

CAUTION
Do not subject the probe to solvents or solvent fumes as these can cause deterioration of the probe body and cables.

China RoHS 2

Hazardous Substances Disclosure Table
China RoHS 2 refers to the Ministry of Industry and Information Technology Order No. 32, effective July 1, 2015, titled Management Methods for the Restriction of the Use of Hazardous Substances in Electrical and Electronic Products. To comply with China RoHS 2, we determined this product’s Environmental Protection Use Period (EPUP) to be 25 years in accordance with the Marking for the Restricted Use of Hazardous Substances in Electronic and Electrical Products, SJT 11364.

| Hazardous Substance
---|---
| Lead| Mercury| Cadmium| Hexavalent| Polybrominated| Polybrominated
Part Name| (Pb)| (Hg)| (Cd)| Chromium (Cr (VI))| biphenyls (PBB)| diphenyl ethers (PBDE)
Printed Circuit Board Assemblies| x| o| o| o| o| o
Electrical Components| x| o| o| o| o| o
Metal Components| x| o| o| o| o| o
Plastic Components| o| o| o| o| o| o
This table is made per the guidance of SJ/T 11364.

O: Indicates that this hazardous substance contained in all of the homogeneous materials for the part is below the limit requirement in GB/T 26572.

X: Indicates that this hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in GB/T 26572.

© Cal Test Electronics, Inc. Electronic Format Only
Manual Part Number: 451-051-001 Revision: B

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