GE IS200STURH2AEC Simplex Primary Trip Terminal Board – 4 Inputs, 2 Outputs, Mark VIe

Product Brief – IS200STURH2AEC

IS200STURH2AEC is a simplex primary turbine protection input board from GE Mark VIe series. It handles 4 speed inputs, 2 trip relay outputs, and sync signals. Designed for turbine overspeed and generator synchronizing.

Core Specifications

• Part Number: IS200STURH2AEC
• Manufacturer: General Electric (GE)
• Series: Mark VIe
• Product Type: Simplex Primary Turbine Protection Terminal Board
• Inputs / Outputs: 4 inputs, 2 outputs (relay K1, K2)
• MPU Pulse Range: 2 Hz ~ 20 kHz
• Contact Voltage Sense: 20 V DC
• Coil Voltage: 120 V DC
• Operating Temp: -30 to +65 °C
• Board Size: 17.51 x 18.5 cm
• Weight: 2.00 lbs (approx. 0.91 kg)
• Origin: USA
• Availability: In stock

Hardware & Functional Features

• DC-62 pin connector for one PTUR I/O pack.
• Captures up to 4 independent speed signals.
• 48-terminal Euro-style customer terminal block.
• Two trip solenoid outputs (K1, K2) with safety relays.
• DC-37 pin connector for external trip relay board (TPRG, TPRL, TPRS, TPRA).
• Accepts two PT sync inputs (bus voltage & generator voltage).

Installation & Operation

• Mounts on metal carrier with polyethylene insulator; screw-fixed in cabinet.
• Offered in 4 group variants (H1~H4) with pluggable connections.
• Passive speed sensors: wire between PR#H and PR#L (detects down to 2 RPM).
• Active speed sensors: wire between TTL# and PR#L.
• H1/H2 versions include onboard trip relays; H3/H4 provide external trip board interface.

Application Profiles – Suitable Equipment

• Simplex turbine controls – mechanical drives, overspeed protection.
• Generator drive systems – automatic synchronization with PT signals.
• TMR (Triple Modular Redundant) systems – uses three STUR/PTUR sets for voting.
• Works with GE Mark VIe distributed control systems.
• Compatible with primary trip boards: TPRG, TPRL, TPRS, TPRA.

Oiltech Controls’s Insight

• This STUR board is critical for turbine overspeed and sync logic.
• H1/H2 groups are preferred for self-contained trip relays.
• H3/H4 groups suit external trip voting in redundant architectures.
• Always verify group type before ordering – H1/H2 vs H3/H4 differ in relay placement.
• For TMR, use three STUR boards with a common trip terminal board for safety voting.

5 Professional FAQs (with experience & selection guide)

• Q1: Which group version (H1~H4) should I choose?
  A: Choose H1/H2 if you need onboard trip relays for simplex operation. Select H3/H4 if you plan to connect an external trip relay board (e.g., TPRG) for redundant or TMR setups.
• Q2: Can this board detect very low turbine speeds?
  A: Yes, with passive magnetic sensors, the PTUR I/O pack can detect speeds as low as 2 RPM. Ensure proper wiring between PR#H and PR#L terminals.
• Q3: Is the IS200STURH2AEC compatible with older Mark VI systems?
  A: No, it is specifically designed for Mark VIe series. For Mark VI, refer to the earlier STUR or TTUR variants.
• Q4: How do I wire active vs passive speed sensors?
  A: Passive sensors connect to PR#H and PR#L. Active TTL sensors connect to TTL# and PR#L – do not mix wiring methods.
• Q5: What is the recommended redundancy approach for trip outputs?
  A: For normally open tripping, use three H1/H2 boards in parallel. For normally closed or voting, pair H3/H4 boards with a dedicated TMR trip terminal board.

Why Buy From Oiltech Controls?

• Over 15 years in industrial automation spare parts.
• Global shipping via FedEx, UPS, DHL – 24~28 hour dispatch.
• Every unit tested – surplus or refurbished options available.
• 12-month warranty on all products.
• Technical verification performed before shipment.
• Expert support for obsolete control systems.

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