TD1400 Loop Resistance Tester
1. Summary
TD1400 is a portable instrument dedicated to measuring the loop resistance and contact resistance of switches, circuit breakers, copper-aluminum busbars and other equipment, with an accuracy of Class 0.2/ Class 0.5 available.
2. Features
Resistance measurement range: 0.01 mΩ ~ 180 mΩ;
Support long-term output of 2A~100A (optional 200A) DC current.
LCD touch screen
Built-in micro printer for on-site printing of test results.
Can work under -20°C ~ 45°C ambient conditions.
Supports AC (198 V ~ 253 V) wide voltage input range.
RS232 interface.
☆ Measure loop resistance / contact resistance |
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- With a built-in constant current source, the instrument can continuously output 1 00 A (200A selection) large current;
- The four-wire wiring method can effectively eliminate the measurement error caused by the resistance of the test wire; ;
- It has a combination of voltage and current test wire.
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3. Characteristics
☆ High stability constant current source |
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The instrument adopts the design principle of closed-loop negative feedback system, which can feedback and adjust the output power value in real time to ensure real-time stability.
The typical stability of the DC current output is 0.02%/min. |
4. Specifications
Test the current |
Resistance measurement range |
Resolution |
Measurement uncertainty (k=2) (%*RD + μΩ) [1]. |
Class 0.5 |
Class 0.2 |
20 A |
0 ~ 180 mΩ |
10 mΩ |
0.5 + 10 |
0.2 + 10 |
50 A |
0 ~ 60 mΩ |
1 mΩ |
0.5 + 10 |
0.2 + 10 |
100 A |
0 ~ 25 mΩ |
1 mΩ |
0.5 + 10 |
0.2 + 10 |
200 A[2] |
0 ~ 5 mΩ |
0.1 mΩ |
0.5 + 10 |
0.2 + 10 |
Note [1]: RD is the reading value; [2]: 200 A range is optional |
5. General Specifications
Power supply |
AC ( 220 ± 22 )V,( 50 ± 2 ) Hz |
Maximum power consumption |
1000 VA |
Warm-up time |
≥ 30 min |
Temperature performance |
Working temperature: -20 °C ~ 45 °C; Storage temperature: -20 °C ~ 55 °C |
Humidity performance |
Operating humidity: ( 20% ~ 85% ) R· H, no condensation Storage humidity: < 95% R· H, no condensation |
Communication interface |
RS232 |
Quality |
Approx 8 kg |
Size |
380 mm(W)X 260 mm(D)X 180 mm(H) |
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6. Ordering Information
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