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SKU: IS220PSFDH1A

General Electric IS220PSFDH1A Power Supply

The GE IS220PSFDH1A is a Mark VI flame detector power supply. It provides 335V DC for up to eight sensors and features TMR redundancy for critical turbine safety.

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The GE IS220PSFDH1A is a specialized high-voltage power supply for the Mark VI Speedtronic control system. This module provides stable power specifically for flame detection sensors in gas turbine applications. It converts a standard 28V DC input into a precise 335V DC output. Furthermore, the unit supports up to eight individual flame detectors simultaneously. Its design ensures the continuous monitoring of combustion processes in critical power generation environments. The hardware belongs to the advanced Mark VI lineage and improves upon legacy turbine control technologies.

Technical Performance Specifications

ParameterSpecification Detail
ManufacturerGeneral Electric (GE)
Model NumberIS220PSFDH1A
Output Voltage335V DC (±5% Tolerance)
Input Voltage28V DC (Range: 26.6 – 29.4V)
Current Limit7 mA
Isolation Rating1700V DC
Operating Temp-30°C to +65°C
Weight0.38 kg
Dimensions12.8 x 8.2 x 6 cm

Redundancy and System Reliability

This power supply utilizes a Triple Modular Redundant (TMR) diode-ORed configuration to maximize uptime. This architecture allows the system to maintain full functionality even if two modules fail. Additionally, the PCB features a conformal coating to resist moisture and industrial pollutants. The module also includes an integrated soft-start circuit to limit inrush current to 550mA. Consequently, these features prevent electrical stress on the turbine control backplane during startup. The convection-cooled design further eliminates the need for mechanical cooling fans.

Diagnostic Monitoring and Safety

The IS220PSFDH1A incorporates three front-facing LEDs for immediate status verification. These indicators allow maintenance teams to monitor power health at a glance. Moreover, the unit provides filtered inputs to block electromagnetic interference from nearby heavy machinery. Over-voltage protection circuits also shield the flame detectors from potential electrical spikes. The module maintains 1700V DC isolation to separate high-voltage outputs from sensitive control logic. These safety measures ensure high reliability for both wind and gas turbine protection systems.

Installation and Wiring Guidelines

Technicians typically mount this power supply directly above the TRPG terminal board. The hardware requires a solid functional earth (FE) connection to the chassis for grounding. For electrical interfacing, the P1 connector handles the 28V DC input signals. Meanwhile, the 2×2 P2 connector delivers the 335V DC output to the J3, J4, or J5 ports on the terminal board. This compact 0.38kg unit fits easily into high-density control cabinets. The simplified wiring scheme also reduces the risk of connection errors during field installation.

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  • Product Series: Mark V Speedtronic
  • Component Type: Power Distribution Board (PCB)
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  • Diagnostic Indicators: 36 "OK" status LEDs
  • Control Interface: 8 toggle switches
  • Connection Ports: 10-pin connector and 4 signal terminals
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  • Country of Origin: USA
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