News Details

Single-phase microcomputer relay protection tester;



Widely used in scientific research, production, and electrical testing sites in industries such as electric power, petrochemical, metallurgy, railway, aviation, and military. It can independently complete device testing in professional fields such as microcomputer protection, relay protection, excitation, metering, and fault recording.

Overview of Single-phase Microcomputer Relay Protection Tester:

The microcomputer relay protection calibration instrument is a new type of miniaturized microcomputer relay protection tester developed based on the "Technical Conditions for Microcomputer Relay Protection Test Devices (Discussion Draft)" issued by the Ministry of Electric Power, extensively listening to user opinions, summarizing the advantages and disadvantages of similar domestic products, and fully utilizing modern advanced microelectronic technology and devices. It adopts an advanced structure that can operate independently as a standalone unit or be connected to a laptop for operation. The host is equipped with a new generation of high-speed digital signal processor microcomputer, true 16-bit DAC module, new modular high-fidelity high-power amplifier, built-in large-screen liquid crystal display, and flexible and convenient rotating mouse controller. Standalone operation already has strong functions and can perform most tests, while connecting to a computer provides more powerful operational functions.

The three-phase microcomputer relay protection calibration instrument test device is an important testing tool to ensure the safe and reliable operation of the power system. With the rapid development of computer technology, microelectronics technology, and power electronics technology, applying new technological achievements to continuously launch new high-performance relay protection test devices is an inevitable trend of technological progress. The three-phase relay protection calibration instrument, based on the "Technical Conditions for Microcomputer Relay Protection Test Devices" issued by the former Ministry of Electric Power, carefully summarizes the development and production experience of previous generations of products, and adopts modern new digital technology, high-precision electronic components, microcomputer systems, and new circuits and structures.

Parameters of Single-phase Microcomputer Relay Protection Tester:

1. AC current output

Output accuracy   Relay protection tester: 0.5 level

Phase current output (RMS)     0～40A 

Three-phase current output (RMS)   0～120A

Long-term allowable working value of phase current (RMS) 10A

Maximum output power of phase current               420VA

Maximum output power when three-phase current is at maximum   900VA

Allowable working time when three-phase current is at maximum   10s

Frequency range (fundamental)   20～1000Hz

Harmonic order           1～20 times

2. DC current output

Output accuracy   0.5 level

Current output   0～±10A / per phase, 0～±30A / three parallel

Maximum output load voltage   20V