TD1400 Loop Resistance Tester
The TD1400 is a high-performance portable instrument designed for accurately measuring loop resistance and contact resistance in electrical power systems. It is suitable for applications involving circuit breakers, switches, copper-aluminum busbars, and other conductive components requiring precise low-resistance evaluation.
Engineered to support Class 0.2 and Class 0.5 accuracy levels, the TD1400 ensures reliable field or laboratory testing for maintenance, verification, commissioning, and troubleshooting tasks. With multiple selectable test currents up to 200 A, the device delivers rapid and stable measurement performance even under demanding working conditions.
Compact, durable, and highly efficient, the TD1400 is an essential tool for electrical utilities, substation engineering, transformer manufacturers, switchgear maintenance teams, and power distribution inspection agencies.
| Test Current | Resistance Measurement Range | Resolution | Measurement Uncertainty (k=2) | Class |
|---|---|---|---|---|
| 20 A | 0 ~ 180 mΩ | 10 µΩ | 0.5% RD + 10 µΩ | Class 0.5 / Class 0.2 |
| 50 A | 0 ~ 60 mΩ | 1 µΩ | 0.5% RD + 10 µΩ | Class 0.5 / Class 0.2 |
| 100 A | 0 ~ 25 mΩ | 1 µΩ | 0.5% RD + 10 µΩ | Class 0.5 / Class 0.2 |
| 200 A | 0 ~ 5 mΩ | 0.1 µΩ | 0.5% RD + 10 µΩ | Class 0.5 / Class 0.2 |
Key Features
- High-accuracy loop and contact resistance measurement supporting Class 0.2 and Class 0.5 performance.
- Selectable measurement currents up to 200 A for high-load contact resistance testing.
- Portable and lightweight design suitable for field testing and on-site diagnostics.
- High resolution down to micro-ohm level ensuring reliable evaluation of small resistance values.
- Stable measurement with fast response, ideal for circuit breakers, switches, and power distribution systems.
- Suitable for factory inspection, preventive maintenance, commissioning, and grid verification tasks.
- Supports repeatable, low-noise measurement results even in environments with electrical interference.