levenhuk ET50 Ping Insulation Tester User Manual

: August 20, 2024
: levenhuk

Table of Contents

levenhuk ET50 Ping Insulation Tester
Product Information
Product Usage Instructions
Safety instructions
Main functions
Basic measurement operations
Specifications
References
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levenhuk ET50 Ping Insulation Tester

levenhuk-ET50-Ping-Insulation-Tester-PRODUCT-IMAGE

Product Information

Specifications

Brand: Ermenrich
Model: Ping ET50
Type: Insulation Tester
Test Voltages: 100V, 250V, 500V, 1000V, 2500V
Functions: Insulation Resistance Test, AC/DC Voltage Measurement, Continuity Measurement

Product Usage Instructions

Safety Instructions
Before using the Ermenrich Ping ET50 Insulation Tester, please carefully read the safety instructions and user manual provided.
Keep the device away from children and only use it as specified in the manual. This device should only be operated by a qualified specialist.

Kit Contents
The kit includes the following items:

Insulation tester
Case
Test leads
Alligator clips
User manual
Warranty

Getting Started
To get started with the device:

Ensure the knob switch is in the OFF position.
Refer to the display icons for various functions like HOLD, COMP, PASS, FAIL, DAR, PI, MAX, MIN, TIMER, TEST, MEMORY, READ, DC, AC, VDC.
Select the desired insulation resistance test voltage using the knob switch.
Connect the test leads and alligator clips to the appropriate input terminals based on the measurement being conducted.

Main Functions
The Ermenrich Ping ET50 Insulation Tester offers the following main functions:

Auto power turn-off: The device will automatically turn off after 15 minutes of inactivity to save battery energy.

Input Terminal Description
The input terminals on the device are as follows:

Positive input terminal for insulation resistance measurement
Positive input terminal for AC/DC voltage measurement
Negative input terminal for AC/DC voltage measurement and continuity measurement
Negative input terminal for insulation resistance measurement and continuity measurement

FAQ

Q: How do I change the test voltage on the insulation tester?
A: Use the knob switch to select the desired test voltage (100V, 250V, 500V, 1000V, 2500V).
Q: What does the auto power turn-off function do?
A: The device will automatically turn off after 15 minutes of inactivity to conserve battery energy. To reactivate the device, turn the switch to OFF and then back on.

Levenhuk Optics s.r.o. (Europe): V Chotejně 700/7, 102 00 Prague 102, Czech Republic, +420 737-004-919, sales-info@levenhuk.cz
Levenhuk USA 928 E 124th Ave. Ste D, Tampa, FL 33612, USA, +1 813 468-3001, contact_us@levenhuk.com
Levenhuk®, Ermenrich® are registered trademarks of Levenhuk Optics s.r.o. (Europe). 2006–2024 Levenhuk, Inc. All rights reserved.
ermenrich.com
20240712

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Device

Display
Analog scale
button
(Memory/Reading)
Secondary display area
button
(Data hold/Backlight/Up)
button
(Max./min. values/Down)
Knob switch
button
(Dielectric absorption/ Polarization index/Voltage measurement)
COMP button (Comparison)
TIMER button
(Synchronization)
TEST button (Testing)
Main display area

Please carefully read the safety instructions and the user manual before using this product. Keep away from children. Use the device only as specified in the user manual.
The kit includes: insulation tester, case, test leads, alligator clips, user manual, and warranty.

Getting started

Unscrew the battery compartment cover screws and remove the cover.
Insert 8 AA batteries according to the correct polarity.
Replace the battery compartment cover and tighten the screws.
Use the knob switch (7) to turn the device on and to select the required operation mode. To turn the device off, turn the knob switch (7) to the OFF position.

Display

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Icon	Description
****	Low battery indicator
HOLD	Data hold
COMP	Data comparison mode
PASS	In comparison mode, the measured value exceeds the set value.
FAIL	In comparison mode, the measured value is less than the set value.
DAR	During the insulation test, the dielectric absorption value of the test

Knob switch

Position	Function
OFF	Power off
100V	Insulation resistance measurement (test voltage 100V, insulation

resistance less than 1GΩ)
250V| Insulation resistance measurement (test voltage 250V, insulation resistance less than 2GΩ)
500V| Insulation resistance measurement (test voltage 500V, insulation resistance less than 20GΩ)
1000V| Insulation resistance measurement (test voltage 1000V, insulation resistance less than 100GΩ)
2500V| Insulation resistance measurement (test voltage 2500V, insulation resistance less than 200GΩ)
Ω| Electrical continuity measurements (measurement range 0.1–200.0Ω)
AC/DC-V| Voltage measurement (DC voltage less than 1000V, AC voltage less than 750V)

Input terminal

Terminal	Description
LINE	Positive input terminal for insulation resistance measurement
V	Positive input terminal for AC/DC voltage measurement
G

Negative input terminal for AC/DC voltage measurement;
Input terminal for continuity measurement at the knob switch position Ω

EARTH|

Negative input terminal for insulation resistance measurement;
Input terminal for continuity measurement at the knob switch position Ω

Safety instructions

ATTENTION! This device must only be operated by a qualified specialist.
(A qualified specialist is a person whose competence is officially confirmed by relevant documents, who has the necessary knowledge and experience to work safely with this device and is authorized to work with circuits with the appropriate voltage class.)

The device is designed in accordance with the safety requirements of the international electrical safety standard EN61010-1; Cat. III, 1000V; Cat. IV, 600V for electronic test instruments. To avoid electric shock or personal injury, strictly follow these safety precautions:

Use extreme caution when measuring voltages above 30V AC (RMS), 42V AC (peak), or 60V DC, it is life-threatening.
Before measuring insulation resistance, cut off power in the circuit under test and discharge all high-voltage capacitors.
To avoid electrocution and device damage, do not measure voltages higher than 1000V for DC circuits and 750V for AC circuits.
Use only properly functioning probes and test leads with intact insulation. Keep your fingers behind the safety guards on the probes.
Do not use the device in environments with explosive gases, vapors, or high humidity.
Connect the neutral/ground wire first, then the phase wire. Disconnect in reverse order.
Disconnect the test leads before opening the battery compartment. Do not use the device when it is disassembled.
Do not open the device. Never attempt to operate a damaged device or a device with damaged electrical parts!
Do not ground yourself when taking measurements. Avoid contact with possible ground sources.
Follow local and national safety regulations. Use personal protective equipment when working with exposed live parts.

Main functions

Auto power turn-off
Auto power turn-off function is active by default (the icon is displayed). After 15 minutes without any key operation, the device will turn off automatically to save battery energy. To restore the device to operational status, turn the switch to the OFF position, then turn the device back on.
To cancel the automatic turn-off function, press and hold the button (5) when turning the device on. Release the button (5) as soon as OFF appears on the screen. The icon will disappear. To turn the function on, press and hold the button (5).

Insulation resistance data saving/reading function
While measuring insulation resistance, press the button (3) to save the data.
Press and hold the button (3) for 3 seconds to enter data viewing mode.
In data view mode, use the ▲/▼ buttons to switch between saved records.
Press the button (3) to delete the current data group. Press the button (3) for 3 seconds to delete all saved data.
Press and hold the button (3) for 3 seconds to exit the data viewing mode.

Data hold
During a measurement, press the button (5) to turn on the data hold function and display the current reading. Press again to turn the function off and return to measurement display.

Backlight
Press the button (5) and hold for 3 seconds to turn the backlight on/off.

Maximum and minimum values
Set the knob switch (7) to the AC/DC-V position and press the button (6) to view the extreme values.
Press and hold the button (6) for 3 seconds to exit this function.

Insulation resistance comparison function
The comparison function is used to check whether the measured insulation resistance meets a specified critical threshold value.
The PASS icon on the screen indicates a positive test result (resistance above threshold). The FAIL icon is displayed when the result is negative (resistance below threshold).
In insulation resistance measurement mode, press the COMP button (9) to turn the comparison function on/off.
Press and hold the COMP button (9) for 3 seconds to enter the critical insulation resistance threshold setting mode.
Use the ▲/▼ buttons to set the value in the current flashing digit.
Press the COMP button (9) to move to the next digit.
Press the button (8) to increase the value by 10 times.
Press and hold the COMP button (9) for 3 seconds to exit threshold setting mode.
Timer insulation resistance measurement function
Press the TIMER button (10) to enable the timer insulation resistance measurement function. The TIMER icon will appear on the display.
Use the ▲/▼ buttons to set the required measurement time (displayed in the additional display section (4)). When the set time is reached, the device will automatically stop measuring the insulation resistance.
Press the TIMER button (10) to disable the timer function.
Absorption ratio (DAR) and polarization index (PI)
Absorption ratio (DAR) and polarization index (PI) are used to test the reduction in leakage current after voltage is applied to the test object. DAR or PI values close to 1 indicate almost complete failure of the insulation. The device calculates DAR and PI as reference parameters for assessing the insulation quality. These parameters reflect the change in insulation resistance over time after application of the test voltage.
In insulation resistance measurement mode, press the button (8) to switch between absorption ratio (DAR) and polarization index (PI). DAR and PI values are calculated using the formulas

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where R 10 Min is the resistance after 10 minutes of voltage application;
R 1 Min (R 60 Sec) is the resistance after 1 minute of voltage application;
R 15 Sec is the resistance after 15 seconds of voltage application.
! If the measurement time is less than 1 minute, the DAR coefficient is invalid.
! If the measurement time is less than 10 minutes, the PI index is invalid.

Basic measurement operations

Insulation resistance measurement
! To avoid damaging the meter, do not turn the knob switch while measuring insulation resistance.
! Perform insulation resistance measurements only on a circuit that is not live. Before starting, check the integrity of the test leads and the absence of voltage in the circuit under test.

Set the knob switch (7) to the appropriate insulation resistance range.
Insert test leads into the red LINE and EARTH terminals (do not twist the wires to avoid interference when measuring high resistances) and connect to the circuit being measured.
Press and hold the TEST button (11) for 3 seconds to begin insulation resistance measurement and a beep will sound. During the measurement, the symbol will flash and the red indicator of the TEST button (11) will light up. The main display area (12) will show the measured insulation resistance, and the additional area (4) will show the actual test voltage.
Press the TEST button (11) to stop the measurement. The measurement result will be shown on the display.

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Circuit continuity measurement

Set the knob switch (7) to the Ω position.
Insert the red lead into the EARTH terminal and the black lead into the G terminal.
Connect test leads to the circuit under test and take measurements.
When the resistance is less than 50.0Ω, a beep will sound. This indicates there are no breaks or high transition resistances in the circuit. Measurement range: 0.1–200.0Ω.

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AC/DC voltage measurement

Set the knob switch (7) to the AC/DC-V position.
Press the button (8) to select alternating (AC symbol on the display) or direct (DC symbol on the display) voltage measurement.
Insert the red lead into the V terminal and the black lead into the G terminal.
Connect test leads to the circuit or power source and take measurements.

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Specifications

Source output voltage 100V, measurement range	0.0–1.0GΩ ±(3%+5)
Source output voltage 250V, measurement range	0.0–2.0GΩ ±(3%+5)
Source output voltage 500V, measurement range	0.0–20.0GΩ ±(3%+5)
Source output voltage 1000V, measurement range	0.0–20.0GΩ ±(3%+5)

20.0–100.0GΩ ±(5%+5)
Source output voltage 2500V, measurement range| 0.0–20.0GΩ ±(3%+5)
20.0–200.0GΩ ±(8%+5)
Short circuit current| approx. 3mA
Operating temperature range| 0… +40°C (+32… 104°F)
Storage temperature range| –20… +60°C (–4… +140°F)
Power supply| 8pcs alkaline AA batteries (1.5V)
Safety rating| EN61010-1; Cat. III, 1000V; Cat. IV, 600V

The manufacturer reserves the right to make changes to the product range and specifications without prior notice.

Care and maintenance
Always test the device prior to using it. Before connecting the device to an electrical circuit, make sure that the test terminal and switch are correctly positioned. The voltage applied between the test terminals or between any terminal and the ground shall not exceed the nominal value specified in the technical data sheet. Store the device in a dry cool place. Do not expose the device to rain or wet conditions. Wipe the body regularly with detergent or a damp cloth with detergent. Do not use solvent to clean the device. Protect the device from sudden impact and excessive mechanical force. Only use accessories and spare parts for this device that comply with the technical specifications. If a part of the device or battery is swallowed, seek medical attention immediately.

Battery safety instructions
Always purchase the correct size and grade of battery most suitable for the intended use. Always replace the whole set of batteries at one time; taking care not to mix old and new ones, or batteries of different types. Clean the battery contacts and also those of the device prior to battery installation. Make sure the batteries are installed correctly with regard to polarity (+ and –). Remove batteries from equipment that is not to be used for an extended period of time. Remove used batteries promptly. Never short-circuit batteries as this may lead to high temperatures, leakage, or explosion. Never heat batteries in order to revive them. Do not disassemble batteries. Remember to switch off devices after use. Keep batteries out of the reach of children, to avoid risk of ingestion, suffocation, or poisoning. Utilize used batteries as prescribed by your country’s laws.

Ermenrich Warranty
Ermenrich products, except for their accessories, carry a 5-year warranty against defects in materials and workmanship. All Ermenrich accessories are warranted to be free of defects in materials and workmanship for six months from the purchase date. The warranty entitles you to the free repair or replacement of the Ermenrich product in any country where a Levenhuk office is located if all the warranty conditions are met.
For further details, please visit: levenhuk.com/warranty
If warranty problems arise, or if you need assistance in using your product, contact the local Levenhuk branch.