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GDJB-PC
CHONGQING GOLD
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:
Current relay, Voltage relay
Time‑delay relay, Intermediate relay
Signal relay, Power‑direction relay
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
Harmonic superimposition (2‑20th harmonic injection)
Transient / permanent / conversion fault simulation
State‑sequence group test, Fault recurrence simulation
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
Partner
