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The NXRJ-200III Three-Phase Thermal Relay Tester is a next-generation testing instrument developed by our company based on user feedback from nationwide users and years of practical experience. Primarily designed for calibration and verification of various thermal relays and motor protection devices, this device features rational engineering design, user-friendly operation, and high output power. It has been widely adopted in electrical testing environments across power systems, railways, petrochemical plants, metallurgical facilities, and mining operations.

◆ Capable of delivering 0-200A current for extended periods

◆ Synchronized testing of operating time for thermal relays, thermocouples, and motor protectors

◆ Detection of normally open/closed contacts

◆ Supports serial connection of multiple calibration units for enhanced operational efficiency

II. Main Technical Specifications

Power input: AC 380/220V 50Hz three-phase four-wire

Instrument class: Class 0.2

Output current: 3×200A

Timing measurement: Range: 0.0001S to 99999.999S, Precision: 0.001S

1. In 2013, the original equipment underwent comprehensive upgrades: the electric stopwatch was upgraded to 0.001-99999.999S precision, and the ammeter was upgraded to a 5-digit display with 0.2 class accuracy.

2. The new products NXRJ-500SH, NXRJ-500T, NXRJ-500VA, and NXRJ-500EP were launched, marking a milestone for the nation's sole manufacturer of thermal relay testers.

3. In 2014, all new instruments adopted six-digit half-display LCD screens with yellow backgrounds and bold black text, ensuring crystal-clear visibility even in sunlight.

4. In the second half of 2014, the company introduced a new generation of high-current generators and three-phase thermal relay testers using advanced German constant current technology, IGBT modules, and PWMN technology, with current ranges adjustable from 0-50000A and customizable configurations.

5. All 2014 model instruments were upgraded to 6-digit semi-dial displays with LCD screens.

6. In 2015, a groundbreaking large-current generator was successfully developed using cutting-edge German constant-current technology, IGBT modules, and PWMN technology, marking China's first domestically developed three-phase thermal relay tester.

7. In 2017, a thermal relay tester and motor protector tester were introduced based on linear power amplifier technology, featuring high precision, phase-shifting capability, variable frequency operation, and harmonic output!

This is the upgraded version of the product
Three-phase Thermal Relay Selection Table for Qingdao Naxin Xiangyuan Electrical Equipment Co., Ltd.