1. Product Overview
GE IS200TREGH1BEC is a printed circuit board assembly in the General Electric (GE) Mark VI and Mark VIe Speedtronic series turbine control systems, designed for emergency overspeed protection of industrial gas turbines and steam turbines. Working in conjunction with the emergency turbine protection board (VPRO), this board provides an independent emergency overspeed protection function that is separated from the main control system. It controls the trip solenoid valve through the TREG board and operates in coordination with the TRPG board.
2. Main Parameter Specifications
Model: IS200TREGH1BEC
Series: Mark VI / Mark VIe IS200 Speedtronic
Input Voltage: 125 VDC (trip function)
Operating Temperature: -40°C to +85°C (partial data shows -20°C to +50°C)
Storage Temperature: -40°C to +70°C
Humidity: 5% to 95% (non-condensing)
Dimensions: Approximately 170mm × 105mm × 32mm or 229mm × 165mm × 89mm (varies by data source)
Weight: Approximately 120g or 2.4kg (varies by data source)
Power Consumption: Approximately 10 watts
Number of Relays: 12 in total, among which 9 are used for three groups of voting inputs
3. Product Features
Independent Emergency Overspeed Protection: It operates independently of the main control system to ensure safe shutdown under overspeed conditions, effectively guaranteeing the operational safety of turbine equipment.
Triple Redundancy Voting: 9 relays form three groups with three relays per group, realizing accurate voting judgment on the input signals of trip solenoid valves and improving system reliability.
High-Quality Structure: Adopting a rugged and durable structural design, it can adapt to harsh industrial working environments and has strong environmental adaptability.
Complete Identification Marks: The circuit board is equipped with single-board ID, GE logo, barcode and other identification information, which is convenient for users to query and match official technical manuals and maintenance documents.
EMC Standard Compliance: It fully complies with IEC 61000-4-2, IEC 61000-4-3 and IEC 61000-4-6 electromagnetic compatibility standards, ensuring stable operation in complex electromagnetic interference environments.
4. Structure and Composition
TheIS200TREGH1BEC circuit board is integrated with multiple core components, and the main elements are as follows:
- 12 relays (9 of which are dedicated to trip solenoid valve input voting)
- 12 metal oxide varistors (MOVs)
- 3 D-sub connectors
- 2 terminal boards
- Multiple male headers
- Integrated circuits and transistors
- Resistors, diodes, capacitors and other passive components
- Jumpers
5. Application Fields
As a core protection component of turbine control systems, this product is widely used in the following scenarios:
- Industrial gas turbine control systems
- Industrial steam turbine control systems
- Electric power generation systems
- Industrial automatic control systems
- Safety monitoring systems and turbine protection systems
6. Installation and Maintenance
6.1 Installation Instructions
- Installation Mode: Standard slot-type installation
- Protection Grade: IP20
- Vibration Resistance Requirement: 5 g RMS, 20 Hz to 500 Hz
- Impact Resistance Requirement: 15 g, half-sine wave, duration of 11 ms
6.2 Maintenance Notes
- For detailed installation and maintenance guidelines, please refer to the official original GE technical manual.
- The IS200TREGH1BEC board is powered by 28 VDC supplied by the VPRO board.
- It is recommended to regularly inspect the relay operating status and the overall integrity of the circuit board to ensure long-term stable operation of the turbine protection system.
