Power Quality & DC
The HJ-GZDW Series Substation DC Power System is a microcomputer-controlled DC power supply for high-voltage switchgear operation, relay protection, automation controls, and emergency lighting. It provides stable DC output with voltage and current stabilization accuracy ≤ ±1%, ripple factor ≤ 1%, and system efficiency ≥ 90%. Suitable for 12kV to 220kV substations and power plants, it operates with 3-phase 380V AC input and offers DC outputs from 24V to 220V, currents from 5A to 250A, and battery capacity up to 400Ah.
HJATISPUBLISHED PRODUCT DATA
The project data sheet should state the selected rating, options and site conditions.
| Electrical Parameters | |
|---|---|
| Rated AC Input Voltage | 3-Phase 380V ± 10% |
| Input Grid Frequency | 50 Hz / 60 Hz |
| Rated DC Output Voltage | 24V / 48V / 110V / 220V DC |
| Rated DC Output Current | 5A to 250A |
| Battery Capacity Range | 10Ah to 400Ah (Maintenance-Free Lead-Acid) |
| Performance Metrics | |
| Voltage Stabilization Accuracy | ≤ ± 1% |
| Current Stabilization Accuracy | ≤ ± 1% |
| Ripple Factor | ≤ 1% |
| System Efficiency | ≥ 90% |
| Acoustic Noise Level | ≤ 55 dB |
| Enclosure Protection Degree | IP20 to IP30 |
CONFIGURATION
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STANDARDS & REPORTS
Applicable references: Project specification and IEC equipment standards. Ask for the edition and reports covering the model offered; a standard number alone does not confirm product compliance.
Request drawings, data sheets and model-specific test reports.
APPLICATIONS
For compensation equipment, what do the load measurements show? Include harmonic levels, power factor and the operating range.
For a DC supply, which loads must remain powered and for how long? Send the DC load list and battery duty.
RELATED EQUIPMENT
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