GE IS200TREGH1BEC TREG Emergency Trip Relay Terminal Board

Description

Hardware & Electrical Specifications

• Model：IS200TREGH1BEC
• Part Number：IS200TREGH1BEC
• Module Type：TREG Emergency Trip Relay Terminal Board
• Mounting：Cabinet panel mounting inside turbine control cabinet
• Logic power supply：28 VDC supplied by VPRO protection processor board
• Trip circuit rated voltage：125 VDC maximum for solenoid positive‑side driving
• On‑board relays：Total 12 relays; 9 relays for triple‑channel redundant voting, 3 relays for feedback signal processing
• Hardware filter：4 ms hardware interlock filter for trip signal path
• Trip response：Hardware‑level fast trip action for overspeed and emergency shutdown commands
• Feedback input：Contact feedback inputs to confirm actual solenoid actuation status
• Interface：Barrier‑type screw terminal blocks for field solenoid and feedback wiring; multiple multi‑pin ribbon connectors for VPRO processor interconnection
• PCB treatment：Enhanced conformal coated (BEC revision) for dust‑moisture‑corrosion resistance
• On‑board protection：ESD protection, MOV surge suppression, built‑in energy‑storage capacitor groups for reliable trip action under momentary power fluctuation
• Compatibility note：Cannot run standalone; must match Mark VI VPRO protection processor and TRPG terminal board; full emergency‑trip solenoid simulation test mandatory after replacement.

Environmental Specifications

• Operating temperature：‑40 ℃ ~ +70 ℃
• Storage temperature：‑40 ℃ ~ +85 ℃
• Relative humidity：5%‑95% non‑condensing
• Installation location：Indoor turbine control cabinet
• EMC compliance：IEC 61000‑6‑2
• Certifications：CE

Mechanical Data

• Weight：approx 0.90 kgAX Control…
• Dimension：178 mm × 330 mm × 43 mm
• Handling note：ESD‑sensitive PCB; safety‑critical trip‑relay circuit, anti‑static wrist‑strap mandatory during handling
• Recommended wire cross‑section：0.75‑2.5 mm² shielded twisted‑pair copper cable for solenoid and feedback‑contact wiring
• Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Screw‑terminal field termination for three emergency trip solenoid valves and trip‑confirmation feedback contact signals, provides positive‑side excitation for trip solenoid coils, TRPG board provides negative‑side power supply.
2. Redundant relay hardware 2‑out‑of‑3 voting logic, executes hardware emergency shutdown command, avoids safety‑loop malfunction caused by single‑relay‑point failure.
3. Receives feedback contact signals after solenoid actuation, confirms whether trip action is executed successfully.
4. Built‑in energy‑storage capacitor groups ensure reliable trip output under short‑time power‑supply disturbance.
5. On‑board hardware 4 ms filter suppresses field‑side transient interference from triggering mis‑trip.
6. Supports online individual‑solenoid diagnostic test and offline overspeed‑condition simulation test via system software.
7. On‑board self‑diagnosis: detect power‑supply abnormal, ribbon‑cable link failure and relay‑circuit fault, report fault status to turbine main controller.
8. LED status indication:
   • Green LED：Board auxiliary power normal
   • Yellow LED：Ribbon‑cable link communication active
   • Red LED：Trip‑active / relay‑circuit fault / link‑failure alarm

Installation & Wiring Requirements

1. Cut off rack power supply before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling PCB board.
2. Secure panel mounting firmly; ensure all multi‑pin ribbon‑cable connectors fully locked without loose contact.
3. Field trip‑solenoid wiring strictly follow GE Speedtronic Mark VI wiring manual; safety‑related solenoid cables adopt shielded twisted‑pair, strictly separated from high‑power cables; connect shielding to dedicated ground terminal.
4. Complete protective grounding according to GE Speedtronic system specification.
5. After replacement: verify ribbon‑cable link status, execute solenoid on‑line test, simulate emergency trip condition, validate trip‑solenoid actuation and feedback‑signal response before commissioning.
6. Replacement note: Verify relay‑voting‑logic function after swap; full emergency‑trip‑loop simulation test mandatory before unit put‑into‑service.