Name: IS220PSCAH1A | GE Electric high-reliability DC power supply module
SKU: 18030
Price: 899.00 USD
Availability: InStock

IS220PSCAH1A | GE Electric high-reliability DC power supply module

Product Function

The IS220PSCAH1A is a high-reliability DC power supply module designed for GE’s Speedtronic™ Mark VIe gas/steam turbine control systems. It converts 125V DC input to stabilized 24V DC output for critical control racks, featuring redundant operation, fault diagnostics, and hot-swap capability to ensure uninterrupted power in demanding environments.

Product Specifications & Parameters

Category	Specification
Manufacturer	GE Power Solutions
Series	Mark VIe Speedtronic Turbine Control System
Type	DC-DC Power Converter Module
Input Voltage	125V DC nominal (85-150V DC range)
Output Voltage	24V DC (±0.5% regulation)
Output Current	15A continuous (20A peak for 5s)
Power Rating	360W
Efficiency	>89% @ full load
Redundancy	Parallel operation (N+1 configurable)
Hot-Swap	Supported (live replacement)
Protections	Over-current, over-voltage, short-circuit, thermal shutdown
Cooling	Convection/forced air (≥200 LFM airflow required)
Operating Temp.	-40°C to +70°C
Certifications	UL 508, CE, cULus, ATEX, IEC 61000-4 (EMC)
Isolation Voltage	1500V AC input-to-output

Series Information

Core component of GE’s Mark VIe Turbine Control Family – key compatible hardware:

Control Racks: IS200/IS215 series backplanes (e.g., IS215VCMIH2BE)
I/O Packs:
- IS220PDIAH1A (Discrete Input)
- IS220PTURH1A (Turbine Protection Module)
- IS220PVIBH1A (Vibration Monitoring)
Controllers:
- IS200ERPGH1A (TMR Controller)
- IS220UCSAH1A (Unitary Controller)
Software: ToolboxST™ for configuration and diagnostics

Key Features

Redundant Operation: Parallel modules share load; automatic failover during faults.
Active Current Sharing: Ensures balanced power distribution in multi-module setups.
Live Diagnostics: Front-panel LEDs for status (PWR, OK, FAULT, LOAD SHARE).
Galvanic Isolation: 1500V AC isolation between input/output.
EMC Hardened: Compliant with industrial EMI/RFI standards.
Conformal Coating: Protection against humidity, dust, and corrosive atmospheres.

Role & Purpose

Critical Power Delivery: Supplies clean 24V DC to turbine control electronics during grid disturbances.
Fault Mitigation: Isolates input transients and output overloads to protect sensitive PLCs.
Redundancy Management: Enables N+1 configurations for 99.99% uptime in power plants.
System Monitoring: Reports voltage/current data via Mark VIe’s Ethernet network.

Applications & Use Cases

Industry	Application
Power Generation	Gas/steam turbine control cabinets
Oil & Gas	Compressor station control systems
Marine Propulsion	Shipboard turbine power management
Cogeneration Plants	Combined heat and power (CHP) control racks
Hydroelectric	Excitation system power backup
Industrial Drives	High-power motor control centers (MCC)

Technical Notes

Redundancy Wiring:

Input: Parallel 125V DC feeds (min. 10 AWG) → IS220PSCAH1A terminals (TB1: +IN, -IN)  
Output: Daisy-chain 24V DC to rack (TB2: +OUT, -OUT) with current-sharing bus links

Diagnostic Indicators:

LED

Color

Status

PWR

Green

Input voltage OK

OK

Green

Normal operation

FAULT

Red

Overload/short-circuit

LOAD SHARE

Yellow

Active current-sharing mode
Configuration Rules:
- Max. 4 modules per rack (N+1 redundancy recommended).
- Separation: ≥15mm clearance between modules for cooling.
- Derating: Reduce output to 80% above 55°C ambient.

Critical Installation Guidelines:

Use twisted-pair cabling for input/output to minimize EMI.

Ground: Connect chassis to rack ground stud (≤0.1Ω resistance).

Startup: Sequence modules with 1s delay to prevent inrush collisions.

Typical Turbine Control Rack Setup

Mark VIe Rack Configuration:  
Slot 1-2 : IS220PSCAH1A (Redundant power supplies)  
Slot 3   : IS200ERPGH1A (TMR Controller)  
Slot 4-5 : IS220PDIAH1A (Digital Inputs)  
Slot 6   : IS220PTURH1A (Turbine Protection)  
Slot 7   : IS220PVIBH1A (Vibration Monitoring)