AUTEL MaxiEV ITS100 Digital Insulation Tester User Manual

AUTEL MaxiEV ITS100 Digital Insulation Tester

Product Information

Specifications

• Model : MaxiEV ITS100
• Design : Digital Insulation Tester
• Compliance : IEC61010-1, 1000V CAT, Pollution Level 2

Product Usage Instructions

Safety Instructions
This Digital Insulation Tester is designed in accordance with international electrical safety standard IEC61010-1. Follow these safety guidelines:

1. Operate the tester strictly following the instructions in the manual to avoid damage to the protection function.
2. Do not use if damaged; contact the manufacturer if unsure.
3. Verify correct test terminals and switch positions before connecting to the circuit.
4. Measure known voltage with the tester before testing to ensure proper operation.
5. Avoid voltage exceeding specified limits to prevent electric shock.
6. Replace the battery promptly when the low battery indicator appears.
7. Always discharge high-voltage capacitors before resistance testing.
8. Avoid use near explosive gas or steam.
9. Keep fingers behind the finger guard when using test leads.
10. Do not operate with disassembled parts or open battery cover.
11. Adhere to local safety regulations for hazardous locations.

Tester Battery Replacement
When replacing the battery:

1. Ensure the tester is turned off.
2. Follow the instructions in the manual for proper battery replacement.
3. Use only recommended battery types.

Specifications
Some technical specifications of the MaxiEV ITS100:

• DC Voltage Accuracy: 20
• AC Voltage Accuracy: 20
• Resistance Accuracy: 20
• Insulation Test Accuracy: 20

Technical Index
The technical index provides accuracy details for various measurements. Refer to the manual for specific values.

Safety Instructions

This style of Digital Insulation Tester is designed according to the safety requirements of the international electrical safety standard IEC61010-1 for electronic test instruments. It is designed and manufactured in strict compliance with the 1000V CAT Ⅲ and pollution level 2 regulations of IEC61010-1.

Warning

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

• Please strictly follow the instructions in this manual to operate the tester, otherwise, the protection function provided by the tester may be destroyed.
• Do not use if the tester or test leads are damaged, or if the tester cannot operate properly. If in doubt, please contact the manufacturer.
• Before connecting the tester to the tested circuit, users must ensure to select the correct test terminals and switch positions.
• Before measuring, use the tester to measure the known voltage to verify whether the tester is operating normally.
• The voltage applied between the test terminals or between any terminal and earth ground must not exceed the rated voltage marked on the tester.
• Be careful when operating with a voltage exceeding 30Vac RMS, 42Vac PEAK, or 60Vdc as they pose a risk of electric shock.
• Replace the battery as soon as the low battery indicator appears.
• Cut off the power supply and discharge all high-voltage capacitors before performing the resistance test.
• Do not use the tester near explosive gas or steam.
• When using test leads, keep your fingers behind the finger guard.
• Remove test leads from the tester before opening the tester case or battery cover. Never operate the tester with the tester disassembled or with the battery cover open.
• Comply with local and national safety regulations when operating in hazardous locations.
• Comply with proper protections by local and national authority regulations when operating in hazardous areas.

Warranty
The warranty period of the tester is one year from the date of receipt, and the warranty does not cover artificial damage. This warranty does not apply to fuses and disposable batteries.

Accessories
Please check the actual configuration subject to the packing list.

Device Description

Front Panel

Display Screen

Screen Symbol

Operating Button

Input Terminal

Function Instructions

1. Power On Function
   When turning the rotary switch from the OFF to other positions, pressing and holding the following buttons will enable additional functions of the tester.

   • SELECT : Press and hold the SELECT button, and the tester powers on. The tester displays POFF until the SELECT button is released, and the tester will cancel the automatic power-off function;
   • ENTER : Press and hold the ENTER function, and the tester powers on. The tester will disable the resistance beeping prompt function.

2. Automatic Power Off
   The tester has an automatic power-off function to conserve battery power if there is no function change or button press for 10 minutes. The beep will beep 3 times to prompt before automatically shutting down and users can press any buttons to release sleep mode and wake the tester up.

   • Press and hold the SELECT button and power on the tester, the automatic power-off function will be canceled.
   • The system will disable the automatic power-off function during the insulation test.

3. Hold Function
   It is used for DCV, ACV, and Continuity tests, not insulation tests. Press the HOLD/LOCK button to freeze the displayed value, and the “HOLD” character will be shown on the screen. Press the HOLD/LOCK button again to exit the hold function, and the display screen will be released.

4. Relative Measurement
   It is used for DCV, ACV, and Continuity tests, not insulation tests. Press the REL button to record the current measuring value (initial value), and the “REL” character will be shown on the screen (displayed value = real measured value – initial value). Press the REL button again to exit the relative measurement mode. In relative measurement mode, users can press the SELECT button to view the initial value; when the initial value is invalid, the display shows “—-“.

5. Insulation Test Lock
   In insulation test mode, press the TEST button to perform the insulation test. Stop the insulation test by releasing the TEST button, and the display will show a “HOLD” character. Before testing, press the HOLD/LOCK button and the screen displays “LOCK”. Then press the TEST button, and the tester will perform an insulation test until users press the TEST button again. After completing an insulation test, the lock function will be automatically canceled.
   Note : The test lock function is invalid when the timer function is selected.

6. Data Storage
   Press the MEMO button (in DCV, ACV, and Continuity tests, the tester will switch to HOLD status automatically), the screen displays the “MEMO” character, and the secondary screen displays the data number to be saved. Press the “△/▽” button to modify the data number and press ENTER, then the screen will display “SAVE” which indicates the system is saving data. The data is stored successfully when the buzzer beeps one time. The tester supports storing 20 sets of data and the storage number from 00 to 19.

7. Data Reading
   Press the READ button to read the saved data. The screen displays “READ”, the secondary screen displays the data number, and the primary screen shows the value. Press the “△/▽” button to switch the data number and read the corresponding data.

8. Data Delete
   In READ mode, press ENTER, and the screen will display the “dEL n” to prompt whether to delete the data. Press the ENTER button again to delete selected data. Press the READ button, and then the screen will display the “dEL ALL” to prompt whether to delete all data. Press ENTER to delete all data at once time. Once the data is successfully deleted, the system goes back to the READ mode.
   Note : users can press any other button to back to the READ mode during the operating process.

9. Data Compare
   The COMP function is used for monitoring whether the measured data exceeds the preset alarm upper limit or lower limit. The tester beeps and the screen will not display “PASS” when the measured data is higher than the upper limit or lower than the lower limit. Press the COMP button to enable the data compare function and the screen displays the “COMP” character. It is unable to activate the COMP function when the preset upper limit value is lower than the lower limit value, and the screen will display “—-” as shown below. The system will prompt to reset the alarm upper limit and lower limit. When the measured data is lower than the upper limit and higher than the lower limit, the screen display “PASS”. Press the SELECT button to view preset alarm upper limit and lower limit values:

   • When the primary screen displays “COMP” and the secondary screen displays “HI”, the value displayed on the primary screen is the preset alarm upper limit.
   • When the primary screen displays “COMP” and the secondary screen displays “LO”, the value displayed on the primary screen is the preset alarm lower limit .When the alarm limit value is displayed on the primary screen, press ENTER to modify the preset value.
   1. Press the SELECT button to switch the preset data range and input signal polar.
   2. Press “△/▽” to modify the value, and press ENTER to save the settings.

10. Timer Function
    The TIMER function can only be activated in the insulation test mode. Enable the timer function by pressing the TIMER button, and the screen displays the “TIMER” character. (The lock function will be invalid when the timer function is enabled.) The tester starts the insulation test after pressing the MEASURE button, and the test will be stopped when the preset time is reached. After starting the TIMER function, the secondary screen displays the real-time voltage and test time. During measurement, the tester only displays voltage by default, and it can be switched to display the test time by pressing “△”. Press SELECT to check the preset time. The screen displays “TIMER”, the “PRES” is shown on the primary screen and the preset time is shown on the secondary screen. Press ENTER, and the screen displays “SEt”, then users can press “△/▽” to modify time and press ENTER again to save. (Note: It is unable to activate the TIMER function when the time is set to 0.)

11. MAX/MIN/AVG
    While testing, the tester will automatically record the maximum, minimum, and average values. Press the SELECT button to switch different parameters to view.

12. DAR & PI
    The DAR and PI are used to check whether the leaking current is reduced after a voltage is applied to the tested object (when the PI or DAR value is close to 1, it means that the insulation of the tested object is destroyed). The tester automatically calculates the PI and DAR values as a reference for judging insulation performance. Both DAR and PI represent the change in insulation resistance over some time after the tested object is subjected to the measurement voltage.

Note:

• R10Min=Resistance value measured after applying voltage for 10 minutes;
• R1Min=R60Sec=Resistance value measured after applying voltage for 1 minute;
• R15Sec=Resistance value measured after applying voltage for 15 seconds.

After starting the insulation test, press the SELECT button to view the current DAR and PI values. When the measurement time is less than 1 minute, the DAR and PI will be invalid and the screen will display “—-“.

Test Mode Instructions

1. DC Voltage Measurement (DCV)
   Turn the rotary switch to position, and connect the red probe with the V terminal, and connect the black probe with the COM terminal as shown below.

2. AC Voltage Measurement (ACV)
   Turn the rotary switch to  ∼ v  position, and connect the red probe with the V terminal, and connect the black probe with the COM terminal as shown below

3. Continuity Test
   ATTENTION! Do not measure the voltage when switching to position to avoid damage to the tester.
   Turn the rotary switch to position, and connect the red probe with the V terminal, and connect the black probe with the COM terminal. The buzzer beeps when the resistance is less than 3Ω.
   Note : When measuring small resistance, since the inherent error of the test leads resistance affects the measurement accuracy, it is recommended to use the relative measurement function to eliminate the error caused by the test leads resistance.

4. Insulation Test
   WARNING! Do not perform the insulation test on the live circuit! Check and confirm the test leads are free from any damage!
   Turn the rotary switch to the insulation position first. (If displayed, please replace the battery in time.)

5. Insert the test probes into the High and Low terminals (When measuring high resistance, do not twist the test leads around each other to avoid affecting the measurement results). If the tester displays the “Live” character, it means that the circuit is live. Please remove the test leads from the tested object, and discharge the circuit before the next measuring.

6. Press the TEST.V button to select the correct output voltage.

7. There are two operating methods to start and stop the insulation test:

8. Press and hold the MEASURE button for more than 1 second to start the test, and release the MEASURE button to stop the test;

9. Press the LOCK button to enable the lock mode and the screen displays a “LOCK” character, then press MEASURE to start the test and release the MEASURE button. Press MEASURE again to stop the test.

10. After starting the test, the high voltage symbol is displayed on the tester’s screen. The test symbol and the indicator of the MEASURE button flash during the insulation test. The primary screen shows the measured resistance value and the second screen displays the actual output voltage.

11. Stop the test according to the operating method in step 3). Then the tester
    automatically discharges the measurement load, and the tester displays a “DISC” character.

12. When the output voltage displayed on the secondary screen is 0V, the discharge is finished and stopped.

13. Disconnect the test leads from the tested circuit.

Tester Battery Replacement

WARNING! To avoid electric shock and personal injury, please replace the battery in time when the battery voltage is low. Before replacing, please turn the rotary switch to the power off position, and disconnect the tester test wire from the tested circuit, and remove it from the tester!

1. Unscrew the fastening screw of the battery cover and remove the battery;
2. Replace the old battery and pay attention to the direction of the battery electrodes marked on the bottom of the battery case;
3. Cover the battery and tighten the screws.

Note: ① screw ② battery

Specifications

Safety Standards

| Comply with IEC/EN 61010-1 1000V CAT Ⅲ, 600V

CAT Ⅳ measurement standards

Voltage Measurement| 1000Vdc voltage; 750Vac voltage (true valid value)

Overload Protection

| When performing voltage measurement, if the input terminals are V and COM, the max overload protect voltage is 1200V; if the input terminals are Hi and Lo, the overload protect voltage is 600V;

In other test modes, the overload protect voltage is 250V (valid value)

Tester Battery

| A total of six 1.5V AA alkaline batteries; It supports completing at least 1000 insulation tests (standard test with conditions of 1000V, 1MΩ, and duty cycle of 5 seconds power on and 25 seconds power off)
Insulation Measurement Range| 0.01MΩ~10.00GΩ
Insulation Test Voltage| 50V, 100V, 250V, 500V, 1000V
Insulation Output Voltage Accuracy| +20%, -0%
Insulation Short Circuit Test Current| 1.8mA nominal value

Insulation Auto-Discharge Time

| When capacitance (C)=1μF or less, the discharge time < 1 second

Insulation Live Circuit Detection

| Before test initialization, if the terminal voltage > 20V, the alarm will occur and the test will be prohibited
Insulation Max Capacitive Load| Operable with up to 1μF load
Storage Temperature| -20°C~60°C
Operating Temperature| 0°C~40°C
Storage Altitude| 12000m
---|---
Operating Altitude| 2000m 1000V CAT Ⅲ; 3000m 1000V Ⅱ

Temperature Coefficient

| Per (°C)Í0.05Í(specified accuracy) for temperature

< 18°C or temperature > 28°C

Relative Humidity

| 40%~75%

(40%~60% when insulation test resistance > 1GΩ)

Dimension (mm)| 194(L)150(W)72(H)
Weight (g)| 950g

Technical Index

DC Voltage Accuracy

AC Voltage Accuracy

Resistance Accuracy

Insulation Test Accuracy

Output Voltage| Display Range| Resolution| Test Current| Accuracy
---|---|---|---|---

50V (0~20%)

| 0~20MΩ| 0.01MΩ| ****

1mA@50K

| ****

±(3%+5)

20~200MΩ| 0.1MΩ
200~500MΩ| 10MΩ| ±(5%+5)

100V (0~20%)

| 0~20MΩ| 0.01MΩ| ****

1mA@100K

| ****

±(3%+5)

20~200MΩ| 0.1MΩ
200MΩ~1.00GΩ| 10MΩ| ±(5%+5)

250V (0~20%)

| 0~20MΩ| 0.01MΩ| ****

1mA@250K

| ****

±(3%+5)

20~200MΩ| 0.1MΩ
200~250MΩ| 1MΩ
 | 250MΩ~2.50GΩ| 10MΩ|  | ±(5%+5)
---|---|---|---|---

500V (0~20%)

| 0~20MΩ| 0.01MΩ| ****

1mA@500K

| ****

±(3%+5)

20~200MΩ| 0.1MΩ
200~500MΩ| 1MΩ
500MΩ~5.00GΩ| 10MΩ| ±(5%+5)

1000V (0~20%)

| 0~200MΩ| 0.1MΩ| ****

1mA@1000K

| ****

±(3%+5)

200~1000MΩ| 1MΩ
1.00~5.00GΩ| 0.01GΩ| ±(5%+0.1GΩ)
5.00~10.00GΩ| 0.01GΩ| ±(10%+0.2GΩ)
10.00~30.00GΩ| 0.01GΩ| ±(20%+0.2GΩ)
30.00~100.00GΩ| 0.01GΩ| ±(30%+0.3GΩ)

FAQ

Q: How often should I replace the tester battery?
A: Replace the battery as soon as the low battery indicator appears to ensure continuous and accurate operation of the tester.

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