Basic Information

• Model: IS200PTURH1B

• Part Number: 336A5026ADP12

• Brand & Series: GE Speedtronic Mark VI Turbine Control System

• Product Type: Primary Turbine Trip Terminal Board

• Matching Modules: Works with IS220PTURH1B I/O pack, VTUR/TTUR control boards, compatible with Mark VI TMR (Triple Modular Redundancy) architecture

Product Overview

Core Functions

1. Receives and processes MPU (Magnetic Pickup) speed pulse signals, implements overspeed monitoring and 2-out-of-3 trip logic, supports 12 channels of MPU pulse inputs (2Hz~20kHz)

2. Drives main trip relays and overspeed trip relays, outputs 125VDC control signals to trip solenoid valves and main breaker coils (5A@125VDC)

3. Provides channel-to-channel electrical isolation, surge/overvoltage/overcurrent protection, suppresses industrial electromagnetic interference and improves signal stability

4. Integrates signal filtering, line fault diagnosis and status indication, supports TMR and simplex configurations to meet safety integrity requirements

5. Standard connectors and screw terminal blocks design, fits Mark VI cabinet installation, seamlessly interfaces with PTUR I/O modules

Technical Specifications

• Power Supply: 125VDC (Nominal)

• Operating Temperature: -30°C to +65°C

• Pulse Input: 12 channels passive MPU speed signals, range 2Hz~20kHz, accuracy 0.05%

• Relay Output: 3 sets of main trip/overspeed relays, contact rating 5A@125VDC, supports 2-out-of-3 voting logic

• Isolation: Channel-to-channel electrical isolation, strong anti-interference capability, complies with industrial EMC standards

• Installation: Standard cabinet rail/panel mounting, screw-type terminals for easy field wiring and maintenance

Typical Applications

• Overspeed protection, shaft vibration/displacement protection, flame detection, main breaker control for gas/steam turbines

• Emergency trip circuits, safety interlock systems, speed monitoring and overspeed trip control for turbine units

• Compatible with Mark VI TMR control systems, used in power plants, combined cycle power stations and industrial turbine main protection systems