GE IS200WNPSH1ABA Power Supply Daughter Board

Technical Specifications

Model: IS200WNPSH1ABA

Part Number: IS200WNPSH1ABA，MRP708215

Brand: GE（GE Vernova）

Product Type: WNPS power supply daughter circuit board

Matching System: GE Speedtronic Mark VI turbine control system

Output Voltage: +5VDC, ±15VDC, +24VDC for logic and field I/O circuits

Protection: Over‑voltage, over‑current, short‑circuit and thermal shutdown protection

Cooling Method: Natural convection cooling

Indicator: On‑board LED for power‑good and fault status feedback

Isolation: 1500Vrms input‑to‑output galvanic isolation

Connector: High‑density backplane connector

Installation: Mark VI VME rack plug‑in sub‑board installation

Operating Temperature:‑40℃ ~ +70℃, non‑condensing

Protection Class:IP20

Weight:0.28kg

Dimension:124mm ×84mm ×30mm

Compatible System:Power plant gas‑steam turbine and generator unit control cabinet

Core Function: WNPS power supply daughter board for Mark VI turbine control system. It converts input power into multiple groups of stable regulated DC power, supplies power for system logic circuits, I/O modules and field signal loops. Built‑in complete fault protection and diagnostic feedback function, supports simplex and TMR triple‑modular redundant system configuration, ensures stable power supply for turbine protection and control hardware.

Product Details

The IS200WNPSH1ABA (MRP708215) is WNPS series power supply daughter board for GE Speedtronic Mark VI turbine control system.

This plug‑in sub‑board is installed inside Mark VI VME rack, connected through high‑density backplane connector. It provides multi‑channel regulated DC power outputs for controller logic unit, signal processing boards and field I/O loops. Integrated over‑voltage, over‑current, short‑circuit and thermal shutdown protection circuits can quickly cut off output under abnormal conditions to protect rear‑end hardware. On‑board LED status indicators facilitate on‑site power health inspection and fault location.

Conformal coated circuit board improves anti‑vibration and anti‑interference performance, adapts to harsh electromagnetic environment of power‑plant turbine hall, and can be applied in TMR triple‑modular redundant safety control system of turbo‑generator units.

It belongs to key power auxiliary spare‑part for Mark VI turbine control system, widely used in overhaul and renovation projects of gas‑steam turbine generating units.

It is important spare hardware for system power loop debugging and defective IS200WNPSH1ABA board replacement.