GE IS200ERSCG1A Exciter Regulator Static Converter

GE IS200ERSCG1A Exciter Regulator Static Converter

Part Number IS200ERSCG1A Manufacturer General Electric Country of Manufacture As Per GE Manufacturing Policy Series EX 2100e Function Module Availability In StockIS200ERSCG1A is an Exciter Regulator Static Converter manufactured and designed by General Electric as part of the Excitation Series used in excitation control systems. The IS200ERRRG A Exciter Regulator Redundant Relay (ERRR) board, the IS200ERDDG A Exciter Regulator Dynamic Discharge (ERDD) board, and the dc source and field are all interfaced by the ERSC. It offers connections for field discharge and dc/dc static power converter operations. The board is divided into the ERSCG1 and ERSCG2 groups. Only simplex applications employ ERSCG1. 

Although simplex applications can also use ERSCG2, redundant applications must. Either rectified ac, dc from a station battery, or both types of electricity are used as input. A maximum output of 250 V dc at 35 A dc continuous and 250 V dc at 52.5 A dc for 10 seconds is possible. With two full regulator systems coupled to a single field, functionality is offered to operate in a simplex system or in a redundancy system. An insulated gate bipolar transistor (IGBT) module installed on the board handles all static power switching (apart from field discharge for redundant switchover). 

The dc link charging resistor can be bypassed with a relay (K3). When switching from the main to the redundant regulator, ERSCG2 includes a separate channel for latched field discharge. ERSC APPLICATION DATA: The dimensions of the ERSC are roughly 4 inches broad by 6 inches high. Twelve soldered gates lead connections and four bolted power connectors secure the IGBT module to the ERSC. Four mounting screws hold the IGBT module to a vertical heat sink. The ERSC handles connections with ERRR, ERDD, and the dc source and field.

Features

Input Power and Output Capacity: The input power sources include rectified alternating current (ac), direct current from a station battery, or a combination of both. The board delivers a maximum output of 250 volts direct current (V dc) at 35 amperes (A dc) continuously. Additionally, it can provide 250 V dc at 52.5 A dc for a duration of 10 seconds.

Functionality Modes: The board offers functionality to operate in either a simplex system or a redundant system, where two complete regulator systems are linked to a single field.

Power Switching Mechanism: The board utilizes an insulated gate bipolar transistor (IGBT) module mounted on the board for most static power switching operations. However, field discharge for redundant switchover is an exception.
A relay, denoted as K3, is incorporated to bypass the dc link charging resistor for specific functionalities.

ERSCG2 Additional Pathway: ERSCG2 features a distinct pathway designed for latched field discharge during the transition from the primary to the redundant regulator. This functionality aids in ensuring a smooth switchover process. The board's functionality, adaptable configurations, power handling capabilities, and specialized pathways contribute significantly to the efficient and reliable operation of EX2100 regulator control systems, especially in managing static power conversion and field discharge operations.

Application Data

Physical Dimensions: The module measures approximately 4 inches in width and 6 inches in height, presenting a compact form factor suitable for integration within the EX2100 regulator control system.

IGBT Module Attachment: The board houses an insulated gate bipolar transistor (IGBT) module, connected to the ERSC using twelve soldered gate lead connections and four bolted power connections. This configuration ensures a secure and reliable connection between the IGBT module and the board.
The IGBT module is mounted vertically on a dedicated heat sink using four mounting screws. This setup enhances heat dissipation and aids in maintaining optimal operating temperatures for efficient performance.

Interface Connections: The board serves as an interface linking connections between the dc source and the field, establishing crucial communication and interaction with the ERRR (Exciter Regulator Redundant Relay) and ERDD (Exciter Regulator Dynamic Discharge) boards. These connections enable seamless integration and coordination between various components within the control system.

Voltage Sensing

Voltage Attenuator Function: The primary function of the voltage attenuator is to gauge and regulate the voltage supplied to the field within the system.

Connection Points: The positive input of this voltage attenuator is directly linked to the positive terminal of the field. Importantly, this positive terminal shares a conductive pathway with the redundant discharge circuit, ensuring a synchronized operation within the system. Conversely, the negative input of the voltage attenuator is interconnected to the line side of the current shunt, establishing a reference point for differential voltage measurement.

Differential Voltage Feedback: As a result of the voltage attenuation process, a differential voltage feedback signal is generated. This feedback signal, modulated by the attenuator resistor, conveys essential information about the voltage output directed towards the field. This differential voltage feedback signal, once processed, is then transmitted back to the Exciter Regulator Dynamic Discharge board. It serves as a means of relaying critical voltage information, enabling the ERDD board to monitor and regulate the voltage levels directed to the field.