ZW1020 Insulation Resistance Tester

  • Compact and lightweight with a waterproof design.
  • Automatic calculation of Dielectric Absorption (DAR) and Polarization Index (PI)
  • Noise filtering/rejection, Dielectric Discharge

Company Profile

The company specializes in the research anddevelopment, production, sales, and service of electric power system automation testing equipment, providing customers with one-stop services.

Product Introduction

The Diagnostic 5KV Insulation Tester ZW1020 and 10KV Insulation Tester is designed for the testing and maintenance of high-voltage electrical equipment such as motors, transformers, switchboards, and cables.

Functional Characteristics

1. Measuring insulation resistance to 20 TΩ;
2. Automatic calculation of Dielectric Absorption (DAR) and Polarization Index (PI)
3. Noise filtering/rejection, Dielectric Discharge
4. Capacitance, leakage current, and voltage measurement
5. Test voltages in 10 V steps from 250 V to 1000 V, and 20V or 30V steps from 2.5KV to 10KV.
6. Compact and lightweight with a waterproof design.

Technical Parameter

Size ZW1020
Output Voltage Range Accuracy
100V(10%)DC 0.01MΩ~1.00GΩ ±3%rdg±5dgt
1.00GΩ~100GΩ ±15%rdg±5dgt
250V(10%)DC 0.01MΩ~2.50GΩ ±3%rdg±5dgt
2.50GΩ~250GΩ ±15%rdg±5dgt
500V(10%)DC 0.01MΩ~5.00GΩ ±3%rdg±5dgt
5.00GΩ~500GΩ ±15%rdg±5dgt
1000V(10%)DC 0.01MΩ~10.00GΩ ±3%rdg±5dgt
10.00GΩ~1.00TΩ ±15%rdg±5dgt
2.5KV(10%)DC 0.01MΩ~25.0GΩ ±3%rdg±5dgt
25.0GΩ~2.50TΩ ±15%rdg±5dgt
5KV(10%)DC 0.01MΩ~50.0GΩ ±3%rdg±5dgt
50.0GΩ~5.00TΩ ±15%rdg±5dgt
10KV(10%)DC 0.01MΩ~400GΩ ±5%rdg±5dgt
400GΩ~20.0TΩ ±20%rdg±5dgt


Item Range Accuracy
Current Measurement Range 0.01nA~20.00mA 1.5%±5dgt
Capacitance Range 0.010uF~100.0μF ±20%±0.005μF
Voltage Test 0V~12.0kV 0.5%±1dgt


Functions Insulation Resistance, Current Value, Capacitance Value, Polarization Index, Dielectric Absorption Ratio, Automatic Discharge,
Ambient Temperature Display, Filter, Time, Data Retention
Power DC 14.8 V, 5200mAh rechargeable Li-Battery, approx. 16.8 V in fully charged status
Test Voltage 250V, 500V, 1000V, 2500V, 5000V, 10kV
Voltage Measurement AC/DC up to 600V
Short Circuit Current ≥5mA
Connections L terminal: High Voltage Terminal. Connect one end of the test leads to the L terminal, and the other end should be connected/clamped on to the device under test.
G terminal:Guard Terminal, it is used to provide a return path for surface leakage current and minimize its effect on the results.
E terminal:Earth Terminal, usually connected to the ground or neutral terminal of the measured object.
Time Max:99min and 99seconds, depending on the test method, adjustable
Resolution Insulation Resistance:0.01MΩ
Test Current:0.01nA
Test Voltage:0.1V
Backlight Adjustable backlight, high, medium, low brightness
Test Range Press the button to set
LCD 5.6 bit Color LCD
Test Indication While testing, an LED light will flash, and the buzzer will sound.
Charging Indication A red light indicates that charging is in process; a green light indicates that the battery is fully charged.
Over Measurement Range –OL–
Data Storage Data is automatically saved upon the completion of the test, up to 1000 sets of data, including the current test data, ambient
temperature, date and time and other information.
Data View Use the buttons to select Data View option on the homescreen, and use the arrows to browse through the data.
Automatic shut-down Instrument will automatically shut down without operation in 15 minutes.
Standard Test Leads 1 red, 1 green and 1 black test lead with clip.
Battery Voltage Display the remaining battery in real time. Please charge in a timely manner when the battery is low.
No output voltage for testing when the battery is low.
Date Date is displayed at the top of the screen.
Ambient Temperature Ambient temperature is displayed at the top of the screen.
Dimensions 320mm(L) ×240mm (W)×145mm(H)
Weight Approximately 3.25kg (battery included)
Data Transmission Download data through the USB port
Communication Interface USB port, the saved data can be uploaded to the computer for saving or printing.
Communication Lines USB cable,1.5m in length
Working Temperature and Humidity -10℃~40℃;no condensations when below 80% RH
Storage Temperature and Humidity -20℃~60℃; no condensation when below 70% RH,
Withstand Voltage AC 5kV 50Hz ,1min between test leads and the cabinet
Dielectric Strength Above 500 MΩ between the test leads and the cabinet.
Safety Standards CAT IV 600V

Product Detail


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