IC3600EPSB1 - Voltage Regulator Board

SPECIFICATIONS

Part No: IC3600EPSB1
Manufacturer: General Electric
Function: Voltage Regulator Board
Series: Mark I and II
Voltage regulation: 100V.
Input voltage range: 105V � 250V DC.
Current limit: 13A, automatic shutdown above limit
Availability: In Stock
Country of Manufacturer: United States (USA)

Functional Description

IC3600EPSB1 is a Voltage Regulator Board developed by GE. It is a part of the Mark I and II control system. This board functions in delivering both isolated and non-isolated �6VDC outputs, along with a higher voltage DC output used for relay control.

Theory of Operation

The card performs the following critical functions:

• Supplies �6V DC Outputs: Two isolated �6V DC outputs. Two �6V DC outputs referenced to the +28VDC input common.
• DC-DC Conversion for Relay Operation: The card also incorporates a full-wave bridge rectifier feeding a 20�F, 150V capacitor. This arrangement generates a DC output used in conjunction with the inverter system to produce a 130VDC bus. This isolated bus powers the �4� relay and contact chain used in turbine operation.
• Royer Oscillator-Based Inverter: At the heart of the board is a Royer inverter with a saturating magnetic core. This inverter generates a square wave (approximately 2 kHz), which is then processed through appropriate transformer windings to derive the required �6V outputs.
• Full-Wave Bridge and Filtering: Two center-tapped full-wave bridge rectifier circuits, combined with capacitor filters, complete the DC conversion process. This ensures low ripple, regulated output voltage suitable for sensitive turbine control electronics.

Application Data

Input Voltage Requirements:

• +28V DC input�
• Accepts �10% variation
• Current draw: approximately 0.55A

Output Specifications

• �6V DC Isolated Output: Voltage tolerance �0.5V
• �6V DC Referenced to +28V Input Common: Voltage tolerance �0.5V

Load Capacity

• Each output can support up to 0.8A,
• Total combined output power not to exceed 14 watts.

Features

• Provides regulated and isolated low-voltage DC power for control logic and sensor systems.
• Integral part of the overall inverter-regulator subsystem in GE turbine control.
• Ensures safety and performance through galvanic isolation and precise regulation.
• Compatible with other Mark I and II boards, particularly the EPSD power supply.

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FREQUENTLY ASKED QUESTIONS

What is IC3600EPSB1?
It is a Voltage Regulator Board developed by GE.

What power inputs are required for the board?
It requires a +28V DC input and consumes about 0.55A of current.

What is the output capability of the board?
It supplies 6V DC at up to 0.8A per output, with a maximum total output power of 14 watts.

How does it ensure voltage regulation?
The board uses full-wave bridge rectifiers, capacitors, and a Royer inverter to convert the DC input voltage to regulated outputs. This results in stable power delivery with low ripple, ensuring reliable performance of the connected control systems.