PC Remote Control Three-phase Microcomputer Relay Protection Tester

Product Description

PC Remote Control Three-phase Microcomputer Relay Protection Tester

Introduction：

GDJB-PC portable, all-in-one relay protection tester supports independent field operation or remote control via laptop, providing high-fidelity AC/DC signal output. It covers testing of both traditional relays and modern micro-protection systems, including overcurrent, zero-sequence, distance, differential, reclosing, harmonic superposition, and fault simulation.

Its built-in one-button software self-calibration function eliminates the need for hardware potentiometer adjustments, achieving long-term stable accuracy. It can generate Word/Excel test reports and export data via USB flash drive.

Highlights：

	Full range relay and micro protection testing
	Can test conventional current/voltage/time/intermediate/signal relays; Fully verify the micro protection functions of overcurrent, zero sequence, distance, transformer differential, automatic reclosing, and backup automatic switching devices. Advanced features include harmonic superposition, multi-mode fault simulation, grouped testing, and synchronous inspection testing.

	Rich digital I/O and precise timing measurement
	Equipped with 8-channel digital input and 4-channel digital output terminals. Accurately capture protective actions/return time with a 1ms timing resolution. Compatible with active and passive contact signals, suitable for actual substation wiring environments.

	Built in independent DC auxiliary power supply
	Integrated 110V (1A)/220V (0.6A) DC auxiliary power supply directly provides working power for the tested protection device without the need for additional external power adapters on site.

	One click software self calibration system
	Adopting DSP+FPGA hardware architecture and 16 bit DAC waveform output. Software driven AC/DC offset self calibration, no need to open the chassis to adjust the potentiometer. Effectively prevent accuracy drift after long-term on-site use.

	Flexible operation and complete reporting workflow
	Two operating modes: independent unit, equipped with 10.4-inch TFT color LCD display and industrial keyboard/touchpad; Or connect an external laptop via USB. The test data can be saved locally and exported in Word/Excel format, supporting preview, printing, and USB data export to meet the needs of engineering archiving.

System Settings

Sequence component switching

Parameter：

Item	Specification
AC Current Output	Per‑phase: 0‑40A RMS, accuracy: ±0.2% ±5mAThree‑phase parallel: 0‑120A RMSSingle‑phase max power:400VA, three‑phase parallel max 1000VALong‑term allowable phase current:10A RMS
DC Current Output	0 ~ ±10A per phase, accuracy: ±0.5% ±5mA
AC Voltage Output	Per‑phase:0‑120V RMS; Line‑voltage:0‑240V RMSAccuracy: ±0.2% ±5mV
DC Voltage Output	Single‑phase:0~±160V; Line voltage:0~±320V
Frequency Range	0‑1000 Hz, frequency accuracy 0.01 HzHarmonic:2‑20th order available
Digital Input / Output	8‑DI (support active / passive contact)4‑DO passive relay contact; breaking capacity:110V/2A, 220V/1A
Timing Accuracy	1 ms ~ 9999 s measuring range; timing accuracy:1 ms
Built‑in DC Aux Power	DC 110V 1A / DC 220V 0.6A
Display & Operation	10.4‑inch TFT LCD 800×600; industrial keyboard & touch‑pad
Communication	USB2.0 for laptop connection; dual‑USB host port for U‑disk
Power Supply	AC 220V±10%, 50 Hz, 10 A
Dimension & Weight	340 mm × 157 mm × 276 mm; approx 12.5 kg
Operating Environment	‑10℃ ~ +50℃; Relative humidity ≤80%RH

Main Test:

Conventional Electromechanical Relay Tests

Current relay, Voltage relay
Time‑delay relay, Intermediate relay
Signal relay, Power‑direction relay

Micro‑computer Protection Device Tests

Over‑current & inverse
time over‑current protection
Zero‑sequence protection
Distance / impedance protection
Transformer differential & harmonic
brake differential protection
Auto‑reclosing, Standby auto‑switching test
Synchronization / synchro‑check test

Advanced Simulation Functions

Harmonic superimposition (2‑20th harmonic injection)
Transient / permanent / conversion fault simulation
State‑sequence group test, Fault recurrence simulation

Hardware Auxiliary Functions

8DI / 4DO digital switch measurement
Built‑in 110V / 220V DC auxiliary power
Software self‑calibration for AC amplitude & DC offset
Report generation: Word / Excel, Print & USB export

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