The General Electric IS220PSFDH1A is a Flame Detector Power Supply (PSFD) module designed for use within the Mark VIe turbine control system. This module provides the necessary 335V DC power required for flame detector operation in gas turbine control environments.

Features

• Designed for Mark VIe Speedtronic turbine control systems.
• Converts 28V DC input to a 335V DC output.
• Supports soft-start and hot-swap functionality for 28V DC bus integration.
• Equipped with three diagnostic LEDs (one red, two green) for status monitoring.
• Features a convection-cooled design (no internal fans).
• Includes an infrared (IR) port (not utilized).

Technical Specifications

Installation Guidelines

• The module is typically mounted above the TRPG (Primary Gas Turbine Trip Protection) board.
• Ensure the mounting surface is clean and the mounting studs/brackets are securely fastened.
• The unit is convection-cooled; ensure adequate clearance around the module to allow for proper airflow.
• The 28V DC input supports hot-plugging into an active bus without disrupting other loads.
• Always verify input voltage polarity before connection to prevent damage to the module or the control bus.
• Handle with standard ESD precautions when installing or removing the module from the rack.

Applications

• Gas turbine control systems.
• Power generation cooling and lubrication system management.
• Industrial control for actuators and pressure relief systems.

FAQ

What is the primary function of the IS220PSFDH1A?

The IS220PSFDH1A converts 28V DC input power into a 335V DC output to supply power to flame detectors connected to the TRPG board.

How is the output voltage monitored?

The module features differential test points (TP) on the faceplate with a 100:1 attenuation ratio for safe voltage monitoring.

Is this module hot-swappable?

Yes, the module is designed with soft-start hot-swap input, allowing it to be plugged into an active 28V DC bus.