1. Product Model

2. Brand

3. Product Category

4. Alias

• Official：Power Supply Board

• Common：Drive Power Board, Auxiliary Power Card, System Power PCB, Control Power Supply Module

5. Basic Information

• Manufacturer：Reliance Electric, USA

• Structure：19” rack-mount plug-in card, edge connector

• Status：Obsolete / Discontinued（legacy spare part only）

• Weight：Approx. 0.55 kg

• Dimensions：Approx. 4” × 5”（102 mm × 127 mm）

• Features：Integrated transformer, rectifier, filtering capacitors, voltage regulation circuits

6. Function & Positioning

• Core Function：Provides regulated DC auxiliary power for the entire DC drive control system；converts AC input to stable ±15 VDC, +24 VDC for logic, feedback, and regulator boards；ensures clean, noise-suppressed power for precise signal processing；includes overvoltage, overcurrent, and short-circuit protection.

• Positioning：Central power source for Reliance MaxPak/PRL/Cardpack DC drives；works with armature regulator（0-51901-A）, speed feedback board（0-51902-5A）, and field controller（0-51893-7）to form a complete drive system.

7. Core Performance Parameters

• Input：115/230 VAC, 50/60 Hz

• Output：±15 VDC (logic/feedback), +24 VDC (relays/indicators)

• Regulation：±0.5% line/load regulation

• Ripple：< 50 mV peak-to-peak

• Operating Temp：0°C ~ +55°C

• Storage Temp：-40°C ~ +85°C

• Protections：Fused inputs, overvoltage clamp, current limiting, short-circuit shutdown

8. General Matching Accessories

• Armature regulator board：0-51901-A

• Speed feedback board：0-51902-5A

• Field controller board：0-51893-7

• Main logic board, gate trigger board, shielded power cables, rack mounting hardware

9. Applicable Equipment & Industry

• Equipment：Reliance MaxPak series, PRL series, Cardpack series industrial DC drives, heavy-duty spindle drives, coil winders

• Industries：Metallurgical rolling mills, papermaking machines, mining conveyors, heavy machine tools, textile lines, printing presses, industrial constant-torque speed regulation systems