GE 400W Power Supply IS2020RKPSG2A

Reliable VME Rack Power for Turbine Control Systems

General Electric engineered the IS2020RKPSG2A for robust power delivery. This VME Rack Power Supply Module operates within Mark VI Speedtronic systems. It provides stable, regulated DC power to VME control and interface racks in gas turbine applications.

Core Technical Specifications

• Manufacturer & Model: General Electric IS2020RKPSG2A
• Product Type: VME Rack Power Supply Module
• Series: Mark VI Speedtronic System
• Input Voltage: 125 VDC from Power Distribution Module
• Total Output Power: 400 Watts
• Board Size: 6.25 × 4.25 inches
• Weight: 7 lbs (3.18 kg)

Output Voltage Specifications

• +5 VDC for logic and processor circuits
• ±12 VDC for analog signal processing
• ±15 VDC for precision analog applications
• ±28 VDC for probe excitation and remote devices
• Five +28V outputs power VME rack sections A-F
• One remote +28V output (P28C/PS28) for external peripherals
• Optional 335 VDC output for TRPG flame detectors

Input Voltage Options

• Standard 125 VDC: Powered by Power Distribution Module (PDM)
• Low Voltage Version: 24 VDC operation available (LVPSG2)
• Direct replacement for RKPSG1 and LVPSG1 respectively
• Flexible configuration for different system requirements
• Reliable power source for turbine control applications
• Proven performance in industrial environments

Front Panel Controls & Indicators

• Single user control: locking power switch with pull-to-toggle operation
• Low voltage control for enabling/disabling output voltages
• Serves as fault reset when toggled off and on
• Green LED: Normal operation indicator
• Yellow LED: Input power status
• Red LED: Fault condition presence

Physical Configuration

• Stand-alone module design for VME rack mounting
• Mounts on right-hand side of VME rack via sheet metal bracket
• Large heat sink with metal fins for thermal management
• Front faceplate labeled "Power supply" with revision, catalog, and serial numbers
• Top edge: PSA and PSB connectors for VME rack power harness
• Bottom edge: PS125, PS335, PS28, and PSSTAT connectors

Connector Layout

• PSA/PSB (Top): Mate with cable harness to VME rack
• PS125/PS24: DC input power connection
• PS335: Optional flame detector power output
• PS28: 28 VDC outputs for rack sections and remote device
• PSSTAT: Status connector for diagnostic monitoring
• All bottom connections easily accessible for installation

5V Current Limit Protection

• Special case handling due to 5V under-voltage detector
• Current limit causes 5V output to fold back below UV threshold
• All other outputs automatically disable during fault
• Outputs restore when 5V returns above UV threshold
• Protects downstream components from undervoltage conditions
• Ensures system integrity during power disturbances

Fault Management

• Three fault response types: reset required, transient output shutdown, or supply replacement
• Faults cleared by toggling power switch off then on
• Fault cleared only if root cause no longer exists
• Red LED indicates active fault condition
• Simple fault recovery procedure for operators
• Minimal system downtime during fault resolution

External Peripheral Power Configuration

• P28C or PS28 output at bottom powers external devices
• Jumper plug on bracket left of rack selects configuration
• Normal Position: Standard rack power operation
• Isolated Position: Enables external peripheral power
• Flexible power distribution for auxiliary equipment
• Simple jumper adjustment for configuration changes

System Integration

• Designed for Mark VI VME control and interface racks
• Supports redundant operation for critical applications
• Compatible with gas, steam, and wind turbine systems
• Incorporates Speedtronic control system technology
• Group 2 Mark VI Series product grouping
• Normal PCB coating for environmental protection

Product Availability

• Current Status: In stock for immediate shipment
• New and original General Electric component
• A-rated primary functional product revision
• Manufactured in the United States
• Complete with installation documentation
• Reference manual: GEH-6421E and GEI-100567

Application Areas

• Gas turbine VME rack power distribution
• Steam turbine control system power supply
• Wind turbine automated drive assemblies
• TRPG flame detector power for gas turbines
• VME backplane power for I/O and processor boards
• External peripheral device power applications

Installation Guidelines

• Mount to right-hand side of VME rack using sheet metal bracket
• Connect DC input to PS125/PS24 at bottom
• Mate PSA/PSB connectors with VME rack cable harness
• Configure jumper for normal or isolated operation
• Verify all connections before power application
• Follow GEH-6421E manual for complete instructions

Shipping & Delivery

• Fast shipping via FedEx, UPS, and DHL services
• Orders typically ship within 24 business hours
• International shipping available worldwide
• Complete tracking information provided
• Professional packaging ensures module protection

Frequently Asked Questions (FAQ)

What input voltage does this power supply require?

• The IS2020RKPSG2A requires 125 VDC input from a Power Distribution Module. A 24 VDC low voltage version (LVPSG2) is also available.

What output voltages are provided?

• Provides +5V, ±12V, ±15V, ±28V DC outputs, plus five +28V rack section outputs and an optional 335V DC output for flame detectors.

How much total power can it deliver?

• Total output power rating is 400 Watts across all output voltages for reliable system operation.

How are faults indicated and cleared?

• Red LED indicates fault condition. Toggle power switch off then on to clear fault only if root cause no longer exists.

Can it power external peripheral devices?

• Yes, the P28C/PS28 output can power external devices by moving the jumper from Normal to Isolated position.

What documentation is available?

• Refer to GE manuals GEH-6421E and GEI-100567 for complete technical specifications and installation instructions.