GE IS2020RKPSG2A

Key Specifications

Advantages & Distinctive Features

• Higher Output Capacity: 300 W total output (versus 200 W on RKPSG1A)—supports larger Mark VIe racks.

• Superior Efficiency: >90% (versus >88% on RKPSG1A)—reduces heat generation and improves reliability.

• Active Current Sharing: Enables parallel operation of two power supplies for true load-sharing redundancy.

• Enhanced Current Capacity: +5 V @ 35 A and +3.3 V @ 30 A—handles the most demanding configurations.

• Widest Temperature Range: –40 °C to +80 °C—suitable for extreme environments.

• Thicker Silicone Conformal Coating + Edge Encapsulation: Superior protection against humidity, salt spray, chemicals, and condensing environments.

• Condensing Humidity Rating: 5–100% condensing—suitable for offshore and unheated installations.

• Expanded Diagnostic Log: 750-event log with voltage/current waveforms for comprehensive post-event analysis.

• Military-Grade Manufacturing: 120-hour burn-in, 100% X-ray/AOI, military-grade components, 100 thermal cycles.

• Gold-Plated Captive Washer Terminals: Corrosion-resistant and vibration-proof connections.

• Hot-Swappable: No rack power-down for replacement.

• Direct Retrofit: Replaces RKPSG1A and older power supply modules.

Application Fields

• Large Turbine Control Racks: Primary power for Mark VIe systems with high I/O density

• High-Density I/O Racks: Power for extensive distributed I/O cabinets

• Redundant Power Configurations: Parallel load-sharing for mission-critical applications

• Extreme Environments: Arctic (–40 °C), desert (+80 °C), offshore, tropical, and condensing installations

• Marine Applications: High-vibration engine room installations

• Nuclear Power Plants: Safety-critical power applications

• Retrofit Projects: Upgrading older power supplies for higher capacity

Comparison with RKPSG1A and Competitors

The GE IS2020RKPSG2A offers higher output capacity, active current sharing, superior efficiency, and enhanced diagnostics compared to the RKPSG1A—making it the ideal power supply solution for large, ruggedized Mark VIe systems in extreme environments.

Selection Guidelines

• When to choose:

  • Large Mark VIe racks requiring >200 W total power

  • High-density I/O configurations with multiple processor boards

  • Redundant power configurations requiring active current sharing

  • Extreme environments (–40 to +80 °C, condensing, chemical exposure)

  • High-vibration applications (marine, compressor stations)

• When to choose RKPSG1A instead: For smaller racks with <200 W power requirements.

• Load Calculation: Sum all board loads—ensure total ≤300 W. +5 V rail ≤35 A; +3.3 V rail ≤30 A.

• Redundancy Planning: For load-sharing redundancy, order two GE IS2020RKPSG2A units—active current sharing automatically balances load.

• Cooling: Ensure cabinet airflow ≥200 LFM (increased requirement)—derate above 70 °C.

• Input Wiring: Use 10 AWG minimum (higher current capacity); install fast-acting fuse (35 A) or circuit breaker.

• Coating Verification: Inspect under UV (365 nm)—thicker silicone coating shows distinct fluorescence; verify edge encapsulation bead is continuous.

• Compatibility: Fits all Mark VIe VME64x racks. Requires ControlST v7.0 or higher for active current sharing features.

Operational Precautions

1. Input Polarity: Double-check DC input polarity before power-up.

2. Load Calculation: Verify total rack load ≤300 W. Overloading is a common installation error—measure current draw during commissioning.

3. Active Current Sharing: Verify load balance (within 5%) during commissioning—unbalanced sharing indicates wiring or configuration issues.

4. Cooling: Ensure cabinet airflow ≥200 LFM—higher power output generates more heat.

5. Redundancy Testing: For redundant configurations with active current sharing, perform failover tests—verify seamless transfer without voltage dips.

6. Fault Log: Access 750-event log via Toolbox ST—review voltage/current waveforms for trend analysis.

7. Status Monitoring: Regularly check front-panel LEDs—redundancy status LED indicates load-sharing health.

8. Coating Care: Use GE-approved silicone-safe cleaner; inspect annually under UV—rework voids with approved silicone coating per GE FSB-MKVIe-112.

9. Hot-Swap: Remove/insert slowly under power—processor auto-recognizes new module.

10. Spare Stock: Maintain 1 spare per 3–4 racks; “RKPSG2A” backward-compatible with RKPSG1A/VPWR sockets.

11. Firmware Updates: Ensure the GE IS2020RKPSG2A is in “standby” mode during updates. Use ControlST v7.0 or higher.

12. ESD: Handle by edges only with grounded wrist strap—coating does not protect connectors.

13. Storage: Anti-static bag with desiccant at –40 to +85 °C; rotate every 3 years for coating inspection.