HJ-702 microcomputer relay protection calibrator

It adopts an advanced structure that operates independently on a single machine and can also be connected to a laptop for operation. The host is equipped with a new generation high-speed digital signal processor microcomputer, a true 16 bit DAC module, a new modular high fidelity high-power amplifier, a large screen LCD display, and a flexible and convenient rotating mouse controller. Single machine independent operation already has strong functionality and can perform most experiments, while connecting to a computer for operation has even more powerful operational capabilities. Small size and high precision. It not only has the superior performance and advanced functions of large testers, but also has the advantages of small and flexible testers, easy operation, and high reliability, with a high cost performance ratio. It is a handy tool for relay protection workers.

Other name

Microcomputer relay protection tester, microcomputer relay protection tester, relay protection tester, three-phase relay protection tester, relay protection tester, three-phase relay protection tester, three-phase relay protection calibrator, relay protection calibrator, three-phase relay protection calibrator, relay protection tester

Product Features

1. This device uses a high-speed and high-performance digital control processor as the control microcomputer, and applies a dual precision algorithm in the software to generate high-precision waveforms of any phase
2. By using a high-speed high-level D/A converter, the accuracy and linearity of current and voltage across the entire range are ensured
3. The power amplifier circuit adopts imported high-power high fidelity modular power devices as the power output stage, combined with carefully and reasonably designed heat dissipation structure, with sufficient power redundancy and thermal capacity
4. The switch input circuit is compatible with idle contacts and 0-250V potential contacts
5. The device adopts a 320 × 240 dot matrix high-resolution blue backlit LCD display screen as the display
6. The device is equipped with a dedicated adjustable DC power output on the chassis bottom, divided into 110V and 220V File, can be used as an auxiliary power source for on-site testing

Product parameters

1. AC current output
Output accuracy Level 0.5
Phase current output (effective value) 0-40A
Triple current output (effective value) 0-120A
Long term allowable operating value (effective value) of phase current 10A
Maximum phase current output power of 420VA
The maximum output power is 900VA when the current of the three parallel is the highest
When the maximum output of the triple current is achieved, the allowable working time is 10 seconds
Frequency range (fundamental) 20-1000Hz
Harmonic order 1-20 times
2. DC current output
Output accuracy level 0.5
Current output: 0~± 10A per phase, 0~± 30A per triple junction
Maximum output load voltage 20V
3. AC voltage output
Output accuracy 581:0.5 level
Phase voltage output (effective value) 0-120V
Line voltage output (effective value) 0-240V
Phase voltage/line voltage output power 80VA/100VA
Frequency range (fundamental) 20-1000Hz
Harmonic order 1-20 times
4. DC voltage output
Output accuracy Level 0.5
Phase voltage output amplitude 0~± 160V
Line voltage output amplitude 0~± 320V
Phase voltage/line voltage output power 70VA / 140VA