TD1400 Loop Resistance Tester

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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.

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ONsys Technologies OPC Pvt Ltd was established in 2019 and has emerged as Indias preferred and leading supplier of precision test and measurement instrumentation, automated test systems, intelligent manufacturing systems, and test and automation turnkey solutions.Serve the increasing demand of Electronics and Electrical Test & Measurement equipment and customers application-based customized solutions of Indias rapidly growing Electronics Manufacturing industries. We supply, design, assemble, develop, and manufacture testing equipment, Automated Test Equipment (ATEs), Test Zig, and Test Benches as per requirement with highest global standards. To do this, ONsys invests heavily in sourcing, research, and development in order to offer great products with precision, reliability, and useful innovative test and measurement solutions for the technology industry.

TD1400 Loop Resistance Tester

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