Adysunfiber Communication Co., Ltd.| Manufacturer
Adysunfiber Communication Co., Ltd.

China Manufacturer with main products: OTDR, Optical Power Meter, Optical Laser Soucer, Fusion Splicer

Home  >Products Catalog > Digital Insulation Tester

Digital Insulation Tester

  • ECVV Safebuy Services

    According to the requirements of buyers, will purchase the cost-effective Chinese products for you from the well-chosen suppliers database which was accumulated in the past 10 years.Learn More>>

  • Safebuy Service Guarantee

    Provide financial security for multinational purchaser; Determine delivery time and acceptance product according to the purchasing requirements; Arrange Chinese export declarations and international logistics; Provide unified delivery of products from different suppliers.




I. General
ADS-21A Digital Insulation Tester is portable hand-held tester with battery powered, which is used for testing the security of power supply instrument. It is with simple and clear operation. It adopts standard test wire, and could carry out test quickly and store test result.
The design and production of this instrument is based on abundant knowledge and experiences of electric equipment testing instrument of several years.
II. Functions:
l         Insulation resistance measurement;
l         Continuity measurement by 200mA test current according to EN61557 standards;
l         Continuity measurement by 7mA test current (continuous measurement);
l         AC/DC voltage and frequency measurement.
III. Features:
l         Broad-range insulation resistance to test voltage (50~1000V DC);
l         Tested object could be automatically perform discharge after completing measurement;
l         Polarity shift of automatic voltage testing in "continuity ±200mA”function;
l         Used for continuity 7mA function of inductive tested object;
l         Data Memory;
l         LCD could display the result easy for reading. The operation is simple and clear.
IV. Technical parameters
Insulation resistance
Testing voltage: 50/100/250/500/1000V
Resistance range: 0—20GΩ
Resolution: 0.001;0.01;0.1;1;10MΩ
Accuracy: ± (5%+0.003M)   (0—199.9MΩ)
Testing current: >1mA
AC/DC voltage:
Range: 0—600V
Accuracy :±( reading 3%+3v)
Frequency range: 45—65Hz and DC
Test of 200mA testing current continuity
Display range: 0.00---2000Ω
Resolution: 0.01; 0.1; 1Ω
Accuracy: ± (reading 2%+2D)
Automatic polarity shift: yes
Continuity test
Display range: 0.00---2000Ω
Resolution: 0.01; 0.1; 1Ω
Accuracy :±( reading 5%+2D)
Short testing current: <7mA
Other parameters:
Power supply: 4×1.5V AA dry battery or 4×1.2V AA rechargeable battery ,automatic turn-off
Display: LCD display with backlight
Memory function: could store 1000 testing results
Dimensions: 252×142×62mm
Weight: 1.7kg
Protection grade: double insulation protection
Defend grade: IP54
Working temperature: -10—+50℃  85%RH
Standard configuration:
ADS-21A Digital Insulation Tester
1 set
Bundle files
User’s Manual
1 pc
AA dry battery
8 pc
Testing wire
2 pc
Testing clamp
2 pc
Testing pen
2 pc
Soft case
1 pc
AA Rechargeable battery (Optional)
4 pc
Charger  (Optional)
1 pc

digital insulation tester from this supplier

Heat Shrinkable Shield of Busbar Joint    
FOB Price: 0.50-3.00 USD/Piece
Min Order: 1000 Pieces
Flame Retardant Heat Shrinkable Tube    
FOB Price: 1.00-10.00 USD/Meter
Min Order: 200 Meters
Thick Wall Heat Shrinkable Tube    
FOB Price: 1.00-10.00 USD/Meter
Min Order: 200 Meters
Communication & Power Material    
FOB Price: 1.00-10.00 USD/Meter
Min Order: 200 Meters
Polytetrafluoroethylene Heat Shrinkable Tubing    
FOB Price: 1.00-10.00 USD/Meter
Min Order: 200 Meters

More products from other suppliers

Epoxy Insulation Core Rod    
FOB Price: 0.10-0.55 USD/Meter
Min Order: 10,000 Meter
Cooking thermometer with plastic sleeve    
FOB Price: 0.73-0.85 USD/Piece
Min Order: 1,000 Pieces
35 KV Continuous Busbar Heat Shrink Tubing    
FOB Price: 0.10-9.00 USD/Meter
Min Order: 100 Meters
FR4 G10 G11 FR5 glass fiber epoxy plate    
FOB Price: 1.00-25.00 USD/Sheet
Min Order: 1 Sheet

Can't find a suitable Supplier or product? Entrust ECVV to purchase the well-chosen Chinese products with high cost performance.

Learn More>> Start Safebuy Order

Communicate with Supplier

Sourcing from ECVV
Join Facebook Group