GE IS200TRPGH1B Main circuit breaker terminal block

GE IS200TRPGH1B Main circuit breaker terminal block

GE IS200TRPGH1B Main circuit breaker terminal block

Brand： General Electric

Product ID： IS200TRPGH1B

Condition： New / used

Terms of payment： Paypal、T/T 、Western Union

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Description

GE IS200TRPGH1B

I. Basic Information


Model: IS200TRPGH1B

Brand: GE Speedtronic Mark VI Turbine Control System

Product Type: Primary Trip Safety Termination BoardCooperating Board: TREG Emergency Trip Termination Board, together forming the triple redundant safety shutdown loop for gas/steam turbine units.


Product Positioning

This board is a SIL safety-level critical hardware component for power plants. It integrates 9 electromagnetic relays to form a 2-out-of-3 voting safety loop, connects 3 sets of 125VDC trip solenoids and 8 flame detector input channels, and executes emergency turbine shutdown under faults such as overspeed, excessive vibration, furnace flame loss and abnormal oil pressure. It realizes hardware voting of trip commands, electrical signal isolation, field load driving and fault status collection, with local LED fault indication and remote alarm uploading to DCS/SIS system. It eliminates safety accidents caused by single-point relay mis-operation or fail-to-trip, widely used in overhaul spare part replacement, safety loop redundancy upgrading and protection system technical renovation of thermal power turbine control systems.


Hardware Architecture

  1. 2-out-of-3 Hardware Voting Trip Unit: 9 industrial electromagnetic relays are divided into 3 independent loop groups; only when two or more loops receive trip commands simultaneously will the trip solenoid be actuated, avoiding safety risks from single relay failure.
  2. Trip Solenoid Driving Unit: Designed for 125VDC trip coils, equipped with MOV surge suppression resistors to absorb reverse electromotive force of inductive loads, with fixed 0.1s L/R time constant to guarantee stable trip response timing.
  3. 8-channel Flame Detection Acquisition Unit: Built-in dedicated 335VDC power supply circuit for flame detectors, filters and isolates furnace flame switching signals to provide reliable hardware input for flame loss protection logic.
  4. 28VDC Control Relay Driving Unit: Realizes electrical isolation between main control weak-current trip commands and field high-current safety loops, preventing high-voltage backfeed damage to upper I/O hardware.
  5. Terminal & Diagnostic Unit: Equipped with two groups of 48-position terminal blocks and multi-channel status LEDs, enabling on-site quick positioning of loop open circuit, short circuit, relay abnormal and flame detector failure faults.


Mounting Specifications

  • Control Power Supply: 28VDC for internal relay coils
  • Trip Solenoid Rating: 125VDC, L/R=0.1s, MOV surge protection
  • Flame Detector Power: 335VDC, supports up to 8 signal channels
  • Safety Logic: 2-out-of-3 hardware relay voting, trip response ≤50ms
  • Terminals: 2×48-position terminal blocks + 3 D-SUB interfaces
  • Mounting: Standard Mark VI rack slot installation
  • Dimension: 305mm × 203mm × 48mm
  • Net Weight: 0.54kg
  • Protection Class: IP20 (indoor cabinet installation only)
  • Supporting Equipment: Mark VI main controller, TREG board, trip solenoids, flame detectors, multi-channel DC power supply, shielded control cables
  • Commissioning Tools: GE Toolbox software, multimeter, relay tester, insulation resistance tester, anti-static wristband


Supporting System

Supporting Hardware

Gas/steam turbine Mark VI control system, ESD trip solenoid assembly, furnace flame detection system, DC operation power panel, cabinet safety grounding system.

Commissioning Software

GE Mark VI Toolbox, used for safety loop logic configuration, trip event recording and flame detection parameter setting.

Upper-level System

Plant DCS, SIS and SCADA platforms for remote collection of trip events, flame fault alarms and safety loop abnormal status.

Typical Application Industries

Combined-cycle thermal power plants, petrochemical self-owned power stations, natural gas compressor stations, steel waste heat power plants, waste incineration power generation turbine control systems.


Product Features

  1. 2-out-of-3 Hardware Redundant Safety Architecture: Trip logic operates completely via hardware circuits independent of control software, ensuring reliable emergency shutdown even when the main controller crashes, complying with SIL safety standards.
  2. Multi-stage Surge Protection for High-voltage Loops: MOV and RC absorption circuits are deployed on trip and flame detection channels to suppress switching overvoltage and induced lightning surge, protecting on-board relays and sampling channels from breakdown damage.
  3. Integrated Flame Monitoring & Trip Protection: Combines furnace combustion status acquisition and unit emergency shutdown functions into one board, simplifying cabinet hardware layout and reducing safety loop wiring failure points.
  4. Local Visual Fault Diagnosis: Independent LED indicators for each loop realize rapid on-site troubleshooting without upper computer software, greatly shortening safety circuit maintenance downtime.
  5. Industrial Conformal Coating Rugged Design: Operates stably from -40℃ to +85℃ with excellent EMC and vibration resistance, supporting 24/7 continuous operation with high MTBF value.
  6. Plug-and-play Compatible Replacement: Standard mechanical dimension, terminal definition and timing protocol enable direct in-situ replacement of faulty boards without modifying field wiring and system configuration.


IS200TRPGH1B.png


II. Technical Specifications


2.1 Electrical Parameters

  • Model: IS200TRPGH1B
  • Internal Control Supply: 28VDC, total power consumption ≤12W
  • Trip Loop: 125VDC rated, MOV surge suppression, trip response ≤50ms
  • Flame Detector Loop: 335VDC, max 8 switching input channels
  • Dielectric Withstand Voltage: 2000VAC/1min between strong and weak current isolated loops
  • Built-in Protection: Reverse polarity, overcurrent, ESD, inductive surge absorption, short-circuit fault latch protection
  • Core Functions: Emergency turbine trip protection, furnace flame loss protection, safety loop status acquisition, fault event upload


2.2 Mechanical Parameters

  • Mounting: Standard Mark VI rack slot locking installation
  • Structure: Flame-retardant multilayer PCB, sealed industrial relays, metal reinforced panel
  • Interfaces: 2 groups of 48-position terminals, 3 D-SUB connectors, multi-channel status LEDs
  • Dimension: 305 × 203 × 48mm
  • Net Weight: 0.54kg


2.3 Environmental Specifications

  • Operating Temperature: -40℃ ~ +85℃
  • Storage Temperature: -45℃ ~ +90℃
  • Humidity: 5%~95%RH, non-condensing, no corrosive or conductive dust


III. Key Features


  1. 2-out-of-3 Redundant Emergency Turbine Shutdown: Drives trip solenoids via hardware voting logic to cut fuel and air supply under abnormal operating conditions, eliminating single-point safety failure risks.
  2. 8-channel Centralized Furnace Flame Monitoring: Supplies dedicated operating power for flame probes, monitors combustion status in real time and triggers flame loss protection to prevent furnace backfire and deflagration accidents.
  3. Galvanic Isolation Between Strong and Weak Current Loops: Prevents high-voltage fault backfeed from field circuits damaging the main control I/O system.
  4. Local & Remote Dual-channel Fault Recording: Latches trip sequence and fault timestamp for accident analysis, with both on-site LED indication and remote alarm uploading to plant monitoring system.
  5. Inductive Load Surge Suppression & Line Fault Monitoring: Protects relay contacts from arc breakdown and pre-alarms coil open/short hidden failures to avoid protection fail-to-trip.
  6. Standard Safety Matching Component for Mark VI Turbine Control System: Widely applied in new unit commissioning, old cabinet overhaul and safety level upgrading of thermal and petrochemical power plants.


IV. Working Principle


After 28VDC power-on and hardware self-test, the board enters standby mode and continuously collects flame detector signals. Under normal operation, trip relays remain de-energized and solenoids keep energized to allow unit operation. When fault trip commands are received from the main controller, the 2-out-of-3 voting circuit actuates the trip solenoids to shut down the turbine immediately, latches fault status locally and remotely, and absorbs inductive surge via MOV components. System power cycle and safety loop reset are required to clear the trip latch after troubleshooting.


V. Application Scenarios


  1. Safety shutdown loop maintenance, spare part replacement and periodic safety verification for combined-cycle power plant Mark VI turbine control systems.
  2. Safety loop renovation and SIL upgrading for petrochemical and gas compressor station turbo-generator units.
  3. Technical upgrading of waste heat power plant turbine protection systems to realize redundant 2-out-of-3 trip architecture.
  4. Preventive spare part reserve and safety loop periodic calibration for long-distance oil & gas pipeline compression units.
  5. Intelligent transformation of industrial self-owned power station control systems to integrate flame detection and emergency trip signal loops.

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