GE 8920-PS-DC Intrinsically Safe DC Power Supply Module

GE 8920-PS-DC is an intrinsically safe power supply module designed for GE PAC8000 distributed control system. It supplies regulated power to intrinsically safe field modules, supporting field instruments deployed in flammable and explosive hazardous industrial areas.

This unit accepts wide-range DC input and provides stable 12VDC / 5A galvanically isolated output. It supports load sharing for redundant configuration and complies with global hazardous area certification standards. Widely supplied as spare parts for petrochemical, oil & gas and chemical plant DCS maintenance projects.

Main Specifications

• Brand: GE (Emerson Automation)
• Model: 8920-PS-DC
• Product Type: Intrinsically Safe DC Power Supply Module
• Input Voltage: 18.5 ~ 36 VDC (nominal 24 VDC)
• Output: 12 VDC, 5A, galvanic isolation
• Redundancy: Support load-sharing parallel redundant operation
• Mounting: Installed on 8724-CA-PS module carrier
• Hazardous Area Certifications: ATEX, IECEx, Class I Div 2
• Dimension: 84 mm(W) × 110 mm(H) × 160 mm(D)
• Operating Temperature Range: -40°C ~ +70°C

Core Functions

• Provide certified intrinsically safe power for PAC8000 IS-series field I/O modules
• Built-in overvoltage, overcurrent and short-circuit protection circuits for safety limitation
• Parallel redundant mode improves power supply reliability for critical control loops
• Galvanic isolation effectively suppresses interference between field circuit and control rack
• Convection cooling design eliminates fan failure risks for long-term unattended operation
• Terminal design supports convenient wiring and quick module replacement during maintenance
• Strict intrinsic safety parameters restrict energy to avoid ignition risk in hazardous zones
• Seamless cooperation with PAC8000 rail bus to realize distributed field signal acquisition
• Complete hardware self-diagnosis to detect internal module abnormal operating conditions
• Stable continuous power supply for transmitters and sensors installed in explosive zones

Application Scenarios

• Petrochemical plant PAC8000 DCS hazardous area control racks
• Onshore & offshore oil and gas production platform automation systems
• Refinery distillation unit and catalytic cracking process monitoring equipment
• Chemical factory flammable medium workshop field instrument power supply systems
• Coal chemical industry hazardous location distributed control cabinets
• Natural gas pipeline compressor station monitoring and control equipment
• Waste chemical treatment plant safety instrumented power supply loops
• Methanol, ethylene and other fine chemical production automation control systems
• PAC8000 platform renovation, upgrade and spare parts replacement projects
• GE DCS intrinsically safe power module spare parts inventory and maintenance projects