110kV/220kV Substation Series Testers

  • JY7003G Secondary Injection Protection Relay Tester
JY7003G Secondary Injection Protection Relay Tester

JY7003G Secondary Injection Protection Relay Tester

  • Output 4 Phase Voltage with 3 phase current
  • Windows10 System
  • Output frequency: 0 ~1200Hz
  • Product description: JY7003G can verify various relays such as current, voltage, inverse time, power direction, impedance, differential, low cycle, synchronous, frequency, DC, intermediate, time, etc.

JY7003G relay protection tester can verify various relays (such as current, voltage, inverse time, power direction, impedance, differential, low cycle, synchronous, frequency, DC, intermediate, time, etc.) and microcomputer protection, and can simulate various complex instantaneous The whole set of tests shall be carried out for permanent, permanent and transformational faults.


1. Flexible combination of voltage and current output. With standard 4-phase voltage and 3-phase current output,
Various combinations of outputs can be easily carried out for various types of protection tests. Each phase voltage can output 120V, the current three can output 120A, the 4th phase voltage Ux is a multi-function voltage item, which can be set to 4 kinds of 3UO or synchronous detection voltage, or output at any voltage value
2. The single machine is easy to operate. Device panel features trackball mouse, optimized keyboard and large
Screen TFT liquid crystal display, built-in full Chinese Windows platform operating software. It can be used immediately after booting, and the operation is convenient and fast
3. Double operation mode. In addition to stand-alone operation, the device can also be connected to an external laptop
It can be operated on a desktop computer, the functions of the two methods are exactly the same, and the real complete dual operation mode
4. New high-fidelity linear power amplifier. The output end has always insisted on using high fidelity and high reliability
A modular linear amplifier instead of a switching amplifier for excellent performance. It will not produce high and medium frequency interference on the test site, and it ensures that the waveform is smooth and accurate throughout the entire process from large current to small current.
5. High-performance host. The output part is controlled by DSP, the operation speed is fast, and the real-time data is
The word signal processing ability is strong, the transmission frequency bandwidth is wide, and the high-resolution D/A conversion is controlled. The output waveform has high precision, small distortion and good linearity. A large number of advanced technologies and precision components and materials are used, and a professional structural design is carried out, so the device is small, light in weight, full-featured, easy to carry, and can be started when it is turned on. The flow test is very convenient
6. The software is powerful. It can complete various large-scale and complex calibration work with high degree of automation, and can easily test and scan various protection settings, perform fault playback, store test data in real time, display vector diagrams, print reports online, etc.
7. With independent dedicated DC power output. The device has a dedicated adjustable DC power output of 110V and 220V
8. Abundant contacts. With 8 contact inputs and 4 empty contact outputs. input contact
Compatible with empty contact and 0-250V potential contact, intelligent and automatic identification
9. The interface is complete. The device panel has its own keyboard and mouse, which can be used for stand-alone operation.
It can also operate with an external keyboard and mouse through the keyboard and mouse interface; it also has two USB ports and RS232 ports, which can communicate with computers and other external devices
10. Perfect self-protection function. Reasonable design of heat dissipation structure, reliable and perfect hardware protection measures, soft start function of power supply, self-diagnosis of faults by software and output blocking and other functions
11. Light, small and highly integrated stand-alone and integrated structure. Numerous high-tech carefully designed. The ultra-light and small structure of the meter makes the whole machine extremely small and light


AC Current output

Three current

40A/450VA /current, 120A/1000VA(Parallel)

AC Voltage output

Four voltage

120V/80VA /voltage, 240V/120A(Line Voltage)

Output accuracy


DC Current output

Three current ±10A/200VA/current

DC Voltage output

Three Voltage ±160A/80VA/voltage

Output accuracy



0~360° Accuracy: <0.2°

Output frequency

0 ~1200Hz Accuracy: <0.001Hz

Harmonic number

2~24 times