IDEAL 61-797 Insulation Meter Instruction Manual

IDEAL 61-797 Insulation Meter

Specifications:

• Model : #61-797
• Product : Digital Insulation Meter
• Measurement Categories:
  • CAT II: 1000V
  • CAT III: 1000V
  • CAT IV: 600V
• Test Leads: 10A

Product Usage Instructions

Safety Information:
Read and follow operating instructions carefully. Use the meter, test leads, and accessories as specified in the manual to ensure proper protection provided by the meter.

Continuity Test:
Touch the test leads together to verify battery and test lead functionality.

Point Safety Method:

1. Verify meter operation by measuring a known voltage.
2. Apply the meter to the circuit under test.
3. Return to the known live voltage to ensure proper operation.

Features:

• Pass Indicator
• High Voltage Indicator
• Function Selector & Power On/Off

Functionality:
The meter includes a 4000-count LCD, push buttons for features, and a function selector to turn the power on or off and select functions.

Symbols:

• Risk of Danger
• Hazardous Voltage
• AC (Alternating Current)
• DC (Direct Current)
• Earth Ground

Measuring ACV/DCV:
If the measured voltage is above 660V ac/dc, >660Vac/dc will appear on the display. The auto-sense mode displays ACV or DCV based on the higher value.

Measuring Earth-Bond Resistance:
Before testing, ensure the circuit is de-energized. Short the test leads before measurement and press the blue button to compensate for the probe resistance for 600V insulation.

Register your product and access more information at http://www.idlim.net/support/registration/.

Read First : Safety Information
Understand and follow operating instructions carefully. Use the meter, test leads, and all accessories only as specified in this manual; otherwise, the protection provided by the meter can be impaired.

WARNING
To avoid possible electric shock, personal injury, or death, follow these guidelines:

• Do not use it if the meter appears damaged. Visually inspect the meter to ensure the case and jaws are not cracked.
• Inspect and replace test leads if insulation is damaged, metal is exposed, or probes are cracked. Pay particular attention to the insulation surrounding the connectors.
• Always ensure the meter, test leads and all accessories meet or exceed the measurement category required in the working environment. (i.e. CAT rating)
• Note that the measurement category and voltage rating of combinations of the meter, the test leads, and the accessories are the lowest of the individual components.
• Do not use the meter if it operates abnormally as protection may be impaired.
• Do not use it during electrical storms or in wet weather.
• Do not use around explosive gas, dust, vapor, amperage, or in damp environments. Do not submerge or expose the meter to water and do not use it if the meter has ever been exposed to water or other fluids.
• CAUTION, when pressing the test button, the selected DC voltage is present at the exposed test lead tips.
• Do not apply more than the rated voltage to the meter. Replace the battery as soon as the battery indicator appears to avoid false readings.
• Remove the batteries for storage or if the meter will not be used for longer than one month.
• Battery leakage will compromise the safety of the meter and cause damage to internal components.
• Remove the test leads from the meter before removing the battery cover.
• Do not use without the battery and battery cover properly installed.
• Do not attempt to repair this unit as it has no user-serviceable parts.
• Use the proper terminals, functions, and rrangesfor your measurements.
• Never ground yourself when taking electrical measurements.
• Connect the black common lead to ground or neutral before applying the red test lead to potential voltage. Disconnect the red test lead from the voltage first.
• Keep fingers behind the guard rings of the probe tips.
• Voltages exceeding 30VAC or 60VDC pose a shock hazard so use caution.

CAUTION
To protect yourself, think “Safety First”:

• Comply with local and national safety codes.
• Use appropriate personal protective equipment such as face shields, insulating gloves, insulating boots, and/or insulating mats.
• Before each use:
  • Perform a continuity test by touching the test leads together to verify the functionality of the battery and test leads.
  • Use the 3-Point Safety Method.
  1. Verify meter operation by measuring a known voltage.
  2. Apply the meter to the circuit under test.
  3. Return to the known live voltage again to ensure proper operation.
• Always work with a partner.

Feature Callouts

1. LCD Display – 4000 count
2. Push-Buttons for features
3. Function Selector to turn the Power On or Off and to select a function.
4. Input Terminal for Ω function.
5. Input Terminal for V insulation functions.
6. Common (Ground reference) input Terminal for all functions.

Symbols on the Unit

CAT II

| Measurement Category II applies to testing and measuring circuits connected directly to utilization points (socket outlets and similar points) of the low- voltage installation
CAT III| Measurement Category III applies to measuring circuits connected to the distribution part of the building’s low-voltage installation
CAT IV| Measurement Category IV applies to test and measuring circuits connected at the source of the building’s low-voltage installation

Test Leads

When connecting the test leads to the DUT (Device Under Test) connect the common (COM) test lead before connecting the live lead; when removing the test leads, remove the live test before removing the common test lead. The figures on the following pages show how to make basic measurements.

Measuring ACV/DCV: Auto Sense Function

• If the measured voltage is above 660 V ac/dc, “>660Vac/dc” will appear on the display.
• Auto sense mode: The meter displays ACV or DCV whichever is higher (>0.3V).
• If the measured voltage is above 660Vac/dc, “660Vac/dc” will appear on the display. 5

Measuring ACV/DCV: Auto sense +LPF function

The Low Pass Filter (LPF) mode when activated in the AC Voltage Mode rejects or blocks unwanted voltage at frequencies > 1k HZ. The Low Pass filter can greatly improve measurements on complex waveforms such as adjustable speed drives or variable frequency drives.

Measuring Earth-Bond Resistance

Before starting the test :

1. The circuit under test must be completely de-energized. Check the fuse before testing. Connecting to an energized circuit while the test is active will blow the fuse. See Testing the fuse later in this manual. If the detected voltage is above 2V, “>2V” will appear on the display. In this condition, the test is inhibited.
2. Short the test leads before measurement, and press the blue button to compensfortfor he probe resistance for <2Ω.

Measuring Insulation Resistance

1. Before starting the test: The circuit under test must be completely de-energized. If the voltage detected is above 30V, “>30V” will appear on the display. In this condition, the test is inhibited.
2. Press the blue button to display insulation resistance or Leakage current during the test or when the test stops.
3. Lock mode: Press the Lock button to enter the Lock Mode. Then press the TEST button to start the test. The test voltage will continue to be applied until the TEST/LOCK button is pressed again. NOTE: The red lightning bolt will appear when the test voltage is applied. The test button must be depressed or the test mode locked on to indicate that the test voltage is being applied.
4. Release the TEST button before removing the test leads (to enable the tester to discharge capacitive circuits). If the screen displays volts, wait until it reaches zero.
5. The meter displays the “>” symbol and the maximum resistance for the range when measured resistance is higher than the maximum display range.

Using the Compare Function

1. Before starting the insulation test: Press the COMP button to select the compare value among 100kΩ, 200kΩ, 500kΩ, 1MΩ, 2MΩ, 5MΩ, 10MΩ, 20MΩ, 50MΩ, 100MΩ, 200MΩ and 500MΩ
2. If the measured value is greater than the selected compare value, the green Pass indicator will illuminate.

Measuring PI/DAR

• PI (Polarization Index) = R10-min/R1-min
• DAR (Dielectric Absorption Ratios) = R1-min/R30-sec
• R10-min: the insulation resistance measured at the 10-minute mark after pressing the TEST button.
• R1-min: the insulation resistance measured at the 1-minute mark after pressing the TEST button.
• R30-sec : the insulation resistance measured at the 30-second mark after pressing the TEST button.

When the measured resistance is higher than the maximum range, the screen will display the “Err” symbol for the PI/DAR value.

• TEST button: Press once to start/interrupt the PI /DAR test.
• Blue button: Use to display and check the time left of the PI/DAR test.

The measured values of the PI test
PI = R10-min/R1-min

The measured values of the DAR test
DAR = R1-min/R30-sec

On many installations, the quality of the insulation is so good that both the initial measured value and the subsequently measured value (when performing the PI or DAR tests), will be the maximum that the meter can read. Dividing one into the other will of course read the value of 1, which in this case may be perfectly good. It is strongly recommended that in all cases, you contact the manufacturer of the device under test or the appropriate manual, to ensure that any reading meets the manufacturer’s specification for determining if a part is good or bad.

Using the Store Function

Store/Recall button:
The screen will flash the MEM symbol and the number of the stored data twice when the Store/Recall button is pressed.

1. Press once to store the voltage value during the voltage test
2. Press once to store the PI/ DAR, insulation, or Earth-bond resistance value when the individual test is completed.
3. The memory is divided into five segments, each segment has 100 maximum data points. The method to store the data is first in/first out when the memory is full.

Table: The stored values of the individual test

segments

items

| ****

Voltage

| Earth-Bond resistance| Insulation resistance 50~1000V| ****

DAR

| ****

PI

---|---|---|---|---|---
1| Voltage| Resistance| Resistance| DAR value| PI value
2|  |  | Leakage Current| R30-sec| R1-min
3|  |  | Test voltage| R1-min| R10-min

Note : Press the Store/Recall button > 5 sec to clear the stored data. The screen will be flashing the MEM symbol and “cLr” on reading twice.

Using the Recall Function
Press the Store/Recall button > 2 sec to enter the RECALL mode. If the memory is empty, the meter will display the “ nOnE ” symbol.

Search the stored value under RECALL mode

Read the stored value of the insulation test under RECALL mode

Read the stored value of the DAR test under RECALL mode
Press the PI/DAR button > 2 sec to choose the PI/DAR function, and Press the Store/Recall button > 2 sec to enter the RECALL mode.

Read the stored value of the PI test under RECALL mode

Auto Power Off (Battery Saver)

Restore power by switching the Function Selector or by pressing any button.

• Auto Backlight
  The backlight is automatically turned on in a dark environment.

• Buzzer
  The Meter beeps once for every valid key-press and beeps twice for every invalid key-press.

Power-up options:

• Press the button while turning the meter on from the OFF position. Lock button: display of the software version.
• Store button: reset all stored data.
• Blue button: disable auto power off.
• Battery and Fuse Replacement
• Refer to the following figure to replace the fuse and batteries.

Testing the Fuse

CAUTION:

• Use only a fuse with the amperage, interrupt, voltage, and speed rating specified.
• Fuse rating: Fast, 315mA, 1000V, Min Interrupt Rating 10000A.
• Replace the batteries as soon as the low battery indicator, to avoid false readings.
• When the battery is too low for reliable operation, the meter  displays “bAtt.” The meter will not operate at all until the battery is replaced.
• 1.5V x 4 alkaline batteries.
• Remove the test leads before testing the fuse.
• If the display is reading FUSE, the fuse is bad and should be replaced.

Specifications

General Specifications

• Display : 4000 count
• Refresh Rate: 2.0x/sec.
• Over range: “OL” is displayed
• Polarity: Automatic (no indication for positive polarity); Minus (-) sign for negative polarity
• Auto Power Off: After 20 minutes of non-use
• Low Battery: is displayed if battery voltage drops below operating voltage.
• Altitude : 6561.7 ft (2000m)
• Accuracy: Stated accuracy at 73º ±41ºF (23º ±5ºC), < 80% R.H.
• Batteries : (4) 1.5V AA LR6
• Battery Life : 40 hrs./1000 test @ 1000V/1MΩ
• Fuse : 315mA/1000V (#F-797)
• Operating environment : 32º to 104ºF (0º to 40ºC) at < 75% R.H.
• Storage environment : -4° to 140°F (-20º to 60ºC) at < 80% R.H.
• Weight : 22.3 oz (630g)
• Size : 8.1”H x 3.7”W x 2.0”D (207mmH x 95mmW x 52mmD)
• Accessories Included : Test leads (TL-797, TL-797 RP), (4) AA batteries, Operating Instructions Shock Vibration: Sinusoidal vibration per MIL-T- 28800E (5 ~ 55 Hz, 3g maximum).
• Safety Certification : Complies with UL/IEC/EN 61010-1, 61010-031, EN61557, EN 61326-1 +1A (EMC) Cat IV-600V

Equipment protected by double insulation.
The instrument has been evaluated and complies with insulation (overvoltage) category IV. Pollution degree 2 in accordance with IEC-644. Indoor use.

Maintenance

Clean the case with a damp cloth and mild detergent. Do not use abrasives or solvents.

Service and Replacement Parts
No user-serviceable parts. For replacement parts or to inquire about service information, contact IDEAL INDUSTRIES, INC. at 1-877-201-9005 or visit our website @ www.testersandmeters.com.

Dispose of waste electrical and electronic equipment
To preserve, protect, and improve the quality of the environment, protect human health, and utilize natural resources prudently and rationally, the user should return unserviceable products to relevant facilities by statutory regulations. The crossed-out wheeled bin indicates the product needs to be disposed of separately and not as municipal waste.

Dispose of used batteries/accumulators
The user is legally obliged to return used batteries and accumulators.
Disposing of used batteries in household waste is prohibited! Batteries/accumulators containing hazardous substances are marked with the crossed-out wheeled bin. The symbol indicates that the product is forbidden to be disposed of by vhe domestic refuse. The chemical symbols for the respective hazardous substances are Cd = Cadmium, Hg = Mercury, Pb = Lead

You can return used batteries/accumulators free of charge to any collecting point of your local authority, our stores, or where batteries/accumulators are sold. Consequently, you comply with your legal obligations and contribute to environmental protection.

Electrical Specifications
Accuracy is ±(% reading + number of digits) at 23°C ±5°C < 80%RH.

Voltage Measurement

±(2%+5dgt)(61~500Hz)

LPF ACV| 600.0V| ±(1.5%+5dgt)(50~60Hz)

±(5%+5dgt)(61~400Hz)

• Initial Voltage : ≥ AC 0.6V.
• Over voltage protection: 600 V AC RMS/DC.
• The cut-off frequency of the low pass filter: 1 kHz.
• Input Impedance : 3MΩ // less than 100pF.
• CMRR / NMRR: (Common Mode Rejection Ratio) (Normal Mode Rejection Ratio)
• VAC : CMRR > 60dB at DC, 50Hz / 60Hz
• VDC : CMRR > 100dB at DC, 50Hz / 60Hz NMRR > 50dB at DC, 50Hz / 60Hz
• AC Conversion Type: AC conversions are ac-coupled, true rmsresponding, calibrated to the sine wave input.

For non-sine wave add the following Crest Factor corrections:

• For Crest Factor of 1.4 to 2.0, add 1.0% to accuracy.
• For Crest Factor of 2.0 to 2.5, add 2.5% to accuracy.
• For Crest Factor of 2.5 to 3.0, add 4.0% to accuracy.
• CF 3 @ 330V, 2 @ 500V

Earth-bond resistance Measurement

Earth-Bond Resistance

| 40.00W| ±(1.5%+5dgt)*
400.0W| ****

±(1.5%+3dgt)

4000W
40.00kW

<1.00Ω add 3dgt Open Circuit Test Voltage : > 4.0V,<8V, Short Circuit Current : > 200.0mA Live Circuit Detection: if > 2V ac/dc at inputs, test inhibited. 18

Insulation resistance Measurement

Insulation Resistance

| 4.000MW

40.00MW

| ±(1.5%+5dgt)
400.0MW

4000MW

| ±(3%+5dgt)
4.1GW ~ 20.0GW| ±(10%+3dgt)

• Test Voltage vs. Maximum resistance range:
  50V/50.0MΩ, 100V/100.0MΩ, 250V/250.0MΩ, 500V/500MΩ, and 1000V/20.0GΩ.

• Test Voltage vs. Minimum resistance (with test current=1mA):
  50V/50kΩ, 100V/100kΩ, 250V/250kΩ, 500V/500kΩ and 1000V/1MΩ.

• Test Voltage Accuracy: -0%,+20%

• Short Circuit Test Current: 1mA(nominal) Auto discharge function: discharge time <1 sec for C <1μF

• Maximum Capacitive load: Operable with up to 1μF load

• Live Circuit Detection: if >30V ac/dc at inputs, test inhibited

Warranty Statement

This tester is warranted to the original purchaser against defects in material and workmanship for two years from the date of purchase. Your original receipt from an authorized distributor of IDEAL INDUSTRIES, INC. is your proof of purchase. Register your product at: http://www.idlim.net/support/registration/. During this warranty period, IDEAL INDUSTRIES, INC. will, at its option, replace or repair the defective unit, subject to verification of the defect or malfunction. This warranty does not cover fuses, batteries or damage from abuse, neglect, accident, unauthorized repair, alteration, or unreasonable use of  the instrument.Any implied warranties arising out of the sale of an IDEAL product, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited to the above. The manufacturer shall not be liable for loss of use of the instrument or other incidental or consequential damages, expenses, or economic loss, or for any claim or claims for such damage, expenses or economic loss. State laws vary, so the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

IDEAL INDUSTRIES, INC.

• Sycamore, IL 60178, U.S.A.
• 877-201-9005 Technical Hotline
• www.idealind.com
• ND 7039-4

Made in Taiwan

FAQ

Q: How do I perform a continuity test?
A: Touch the test leads together to verify battery and test lead functionality.

Q: What should I do before measuring Earth-Bond Resistance?
A: Ensure the circuit is completely de-energized, check the fuse, short the test leads before measurement, and press the blue button to compensate probe resistance for 600V insulation.

References

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• testersandmeters.com

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