TW-21A Digital Insulation Tester
I. General
TW-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:
|
No. |
Item |
Qty |
|
1 |
TW-21A Digital Insulation Tester |
1 set |
|
Bundle files |
|
2 |
User’s Manual |
1 pc |
|
3 |
AA dry battery |
8 pc |
|
4 |
Testing wire |
2 pc |
|
5 |
Testing clamp |
2 pc |
|
6 |
Testing pen |
2 pc |
|
7 |
Soft case |
1 pc |
|
8 |
AA Rechargeable battery (Optional) |
4 pc |
|
9 |
Charger (Optional) |
1 pc |
