DC Power Supply Panel
SYPZDW DC power supply panel (commonly referred to as a DC screen or battery charger panel) provides a stabilised DC control power for circuit-breaker operation, relay protection, instrumentation, emergency lighting, and SCADA equipment in substations and industrial power rooms. It ensures that protection and control functions remain operational even during a complete AC mains loss.
The panel incorporates a microprocessor-controlled high-frequency rectifier module that converts incoming AC (220 V / 380 V) to a regulated DC output (110 V or 220 V DC). The rectifier operates in parallel with a valve-regulated lead-acid (VRLA) battery bank, which floats at the DC bus voltage and automatically supplies the load when the AC input fails. Typical autonomy is 2–10 hours depending on the battery capacity specified.
A central intelligent monitoring unit displays the DC bus voltage, battery voltage, charging current, load current, and insulation resistance to earth. The unit provides alarm outputs for undervoltage, overvoltage, ground fault, and rectifier failure via potential-free contacts and RS485 / RS232 communication for SCADA integration. An optional insulation-monitoring relay continuously scans the DC bus for incipient ground faults.
Standard panel sizes: 2260 mm H × 800 mm W × 600 mm D (floor-standing) with hinged front and rear doors. The top compartment houses the rectifier modules and monitoring unit; the lower compartment contains the battery racks. Protection rating is IP3X.
Applications include MV and HV substations, generator step-up transformer stations, industrial plant switchgear rooms, and any facility where trip coils, protection relays, and emergency controls require a secure DC supply.
Compliant with GB/T 19826, DL/T 459, DL/T 857, and DL/T 637. The panel is factory wired, fully tested, and shipped with the battery disconnected and packed in separate crates for sea freight safety.
Quick answer
SYPZDW DC Power Supply Panel is an RFQ-configured dc power supply panel for Substation control power and Relay protection. Confirm five inputs before quotation: voltage class, rated current, single-line diagram, installation environment, and destination standard.
Visible specifications and Product structured data use the same reviewed fact set.
Yes. Submit the project SLD, voltage class, rated current, installation environment, destination country, and preferred component ecosystem so the engineering team can review the quotation scope.
Industrial electrical equipment is configured by project drawings, electrical parameters, component brands, testing requirements, packing, and delivery terms. The site uses RFQ instead of checkout or public pricing.
The source product ID, category, source URL, and image URL are preserved for traceability. Public claims remain limited to supplied source material and RFQ-ready product descriptions.
Provide five core inputs: voltage class, rated current, single-line diagram, installation environment, and destination standard. Component preferences, quantities, delivery terms, and testing requirements improve quotation accuracy.
Use DC panel standards by project and substation control requirements as the initial standard family, then confirm the exact model scope, destination requirements, technical agreement, type-test evidence, and FAT plan with the engineering team before production.
Procurement Guides
How to select DC power supply panels for substation control, relay protection, and breaker operation, covering battery capacity, charging module redundancy, and monitoring requirements.
Read guideIndustry Applications
Technical guide to DC traction power supply systems covering rectifier configurations (12-pulse, 24-pulse), voltage levels (750 V / 1500 V / 3000 V), protection schemes, and procurement specifications for rail and mining applications.
Read guideUpload SLD drawings or secondary schematics to receive an engineering-grade quotation.
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