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The NXRJ-2000E three-phase thermal relay tester is primarily used for testing thermal relays, motor protectors, contactors, circuit breakers, air switches, switchgear, circuit breakers, and protection panel calibration.

The NXRJ-2000E three-phase thermal relay tester is suitable for the following applications:  
  1. Suitable for testing various types of low-voltage motor protectors and thermal relays.

2.Tests whether motor protectors provide effective protection during operation.

3. Ideal for laboratory testing of low-voltage motor protection devices.

4. Used by manufacturers for product quality verification and factory testing/commissioning of motor protectors.

5. Applicable for R&D, testing, and teaching purposes in universities and research institutions. 
  Main features and technical parameters:
  1. Applicable to single-phase and three-phase thermal relays, as well as various active or passive motor protectors, for overvoltage, overcurrent, phase loss, imbalance, locked rotor conditions, and time testing. It can also measure the operating current of current relays and the operating time of rated current.   

◆ Supports sustained current output ranging from 0-2000A

◆ Enables balanced three-phase current output with fine-tuning capability 

◆ Provides balanced three-phase voltage output with fine-tuning function 

◆ Synchronized testing of thermal relay or thermocouple activation time

◆ Automatic identification of normally open/closed contacts

◆ Multiple calibration units can be connected in series for enhanced operational efficiency 

2. Main Technical Specifications 

Power input: AC 380/220V 50Hz

Instrument class: Class 0.5

Output current: 3×2000A

The following is the selection table for three-phase thermal relay testers from Qingdao Naxin Xiangyuan Electrical Equipment Co., Ltd.

Current range: 0–50000A, customizable

1. In 2013, all 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% accuracy.

2. New products including the 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. By 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, offering adjustable current ranges from 0 to 50,000A and customizable configurations.

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

5. In 2015, we successfully developed a next-generation high-current generator utilizing cutting-edge German constant current technology, IGBT modules, and PWMN technology, pioneering China's first three-phase thermal relay tester.

6. In 2017, we introduced thermal relay testers and motor protector testers developed with linear amplifiers, featuring high precision, phase-shifting capability, frequency conversion functionality, and harmonic output capability!