151X1235BC01SA41 GE SCR High-Speed Assembly

151X1235BC01SA41 is an original GE silicon-controlled rectifier high-speed assembly, also named 100MM SCR HS ASSEMBLY, a key power stage hardware unit for the GE EX2100e generator excitation control system. It is widely deployed in power plant generator excitation cabinets for steam turbine, gas turbine and hydro-generator sets.

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Description

GE 151X1235BC01SA41 Product Introduction
Brand: General Electric (GE)
Model: 151X1235BC01SA41
Product Name: 100MM SCR High-Speed Assembly
Weight: Approximately 3.1 kg
Origin: United States

151X1235BC01SA41

151X1235BC01SA41

HS Code: 85411000 (for semiconductor thyristor power assembly)
Operating Temperature: Continuous operating range -40 °C to +70 °C; storage temperature -55 °C to +95 °C
Input: Three-phase AC power input from excitation transformer; gate trigger pulse signal input transmitted from EX2100e main control board; auxiliary monitoring signal input for temperature and device status feedback.
Output: Regulated DC excitation current output feeding generator rotor winding; device temperature feedback signals and fault status signals sent back to system controller.
Dimensions: 380 × 230 × 107 mm, cabinet-mount power assembly for installation inside excitation control cabinet.
Main Functions: Implements phase-controlled rectification via high-power SCR thyristors to convert three-phase alternating current into adjustable direct-current excitation current for generator rotor excitation winding. Receives gate firing pulse commands from the EX2100e main processor board, precisely adjusting thyristor firing angles to regulate excitation current magnitude, so as to stabilize generator terminal voltage and manage unit reactive-power output. Built-in temperature sensing elements continuously monitor SCR device operating temperature in real-time; it will feed over-temperature warning and fault signals to the main control unit once thermal threshold is exceeded. It supports detection of SCR short-circuit, open-circuit and trigger-circuit abnormal conditions, and transmits corresponding fault diagnostic information for system event logging and local alarm indication. The integrated heavy-duty heat-sink structure provides effective thermal dissipation under high-current continuous-load operation. Industrial-grade hardware design resists mechanical vibration, voltage surge and strong electromagnetic interference existing in power-plant environments, ensuring long-term stable continuous running for generator excitation regulation. It cooperates with other EX2100e subsystems to fulfil full-range excitation control tasks including generator soft-excitation, voltage regulation, over-excitation limiting and de-excitation protection.
Application Scope: Core power execution component for GE EX2100e generator excitation control system, applied in thermal power, hydropower and gas-turbine power-generation units.

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