NXRJ-500I Single-phase thermal relay tester
The NXRJ-500I single-phase thermal relay tester is a next-generation testing instrument developed by the company based on user feedback collected nationwide and years of practical experience.
The NXRJ-500I Single-Phase Thermal Relay Tester is a next-generation testing instrument developed by our company based on user feedback from across China 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.
I. Main Functions
◆ Capable of sustained current output ranging from 0–50A or 0–500A
◆ Synchronized testing of thermal relay or thermocouple activation time
◆ Automatic identification of normally open/closed contacts
◆ Support for serial connection of multiple calibration units to enhance operational efficiency
II. Main Technical Specifications
Power input: AC 220V±10% 50Hz
Rated power: 1000VA
Instrument class: Class 0.5 (true RMS)
Timing measurement: Range: 0.0001S to 999999.99S Precision: 0.0001S
Upgrade the following features for new products
Six-digit semi-liquid crystal display for voltage and current, offering higher display accuracy and more precise experimental results.
128*64 dot matrix LCD display for more intuitive data visualization and faster reading
New product features:
1. In 2013, all original equipment was upgraded to electric stopwatch accuracy of 0.001-99999.999 seconds, and ammeters were upgraded to 5-digit digital display with 0.2% accuracy.
2. New products including 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. All 2014 models feature six-digit half-display LCD screens with yellow backgrounds and bold black text, ensuring crystal-clear visibility even in sunlight.
4. In late 2014, the company introduced a new generation of high-current generators and three-phase thermal relay testers utilizing 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.
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!