Model Definition

• 0-55307: Base part number (VVI Inverter Power Supply Board)

• Full Revisions: 0-55307-1 (standard), 0-55307-1E (enhanced)

• Alternative IDs: 055307, O-55307-1, 0-55307-1E

• Status: Discontinued by manufacturer; no direct OEM replacement

• Cross-Reference: No fully compatible equivalent; exact part match required

Technical Specifications

• Form Factor: 3U PCB (approx. 248 × 171 mm)

• Weight: ~0.7 kg

• Input Voltage: 230/460 VAC, 50/60 Hz (from drive mains)

• Output Voltages: ±15 VDC (logic), +5 VDC (digital), +24 VDC (auxiliary)

• Power Rating: 150 HP @ 460 VAC (VVI inverter systems)

• Protection: Overvoltage, overcurrent, short-circuit, and thermal protection

• Operating Temp: 0 °C to +55 °C

• Mounting: 3U rack slot, edge connector to VVI drive backplane

Interfaces & Communication

• Backplane: 3U edge connector (receives AC input, distributes DC outputs)

• Power Terminals: Screw terminals for AC line input and DC power distribution

• Internal Links: Flat-cable connectors for inter-board signaling

• No Network Ports: Hardwired power supply; no serial/Ethernet communication

Key Features

1. VVI Inverter Power Core: Supplies stable DC power to control logic and power components

2. Multi-Voltage Output: Generates ±15 VDC, +5 VDC, and +24 VDC for system subsystems

3. Integrated Protection: On-board fuses, MOVs, and thermal sensors prevent damage

4. Diagnostic LEDs: Power and fault status indicators for troubleshooting

5. 3U Rack Design: Directly interchangeable in VVI drive control racks

Application

• Drive Systems: Reliance VVI Series AC Drives (50–150 HP)

• Subassemblies: VVI inverter control cabinets, power interface racks

• Industries: Conveyors, pumps, fans, machine tools, material handling

• Function: Primary power supply for VVI inverter control and power stages

Compatibility

• Compatible Drives: VVI-50, VVI-75, VVI-100, VVI-150 (50–150 HP)

• Voltage Compatibility: 230/460 VAC three-phase

• Rack Compatibility: Standard 3U VVI drive rack

Critical Notes

• Function Distinction: Different from AutoMax DC drive boards (e.g., 0-54390, 0-54394); this is for VVI AC inverters

• Replacement Challenge: No direct substitute; refurbished 0-55307-1/1E units are standard solution

• Availability: Limited stock; longer lead times; pricing varies by condition