GE Mark VI IS200TRLYH1BHH – Trip Relay Terminal Board for Turbine Emergency Shutdown

The GE Mark VI IS200TRLYH1BHH is a TRLY series trip relay terminal board designed to interface the Mark VI control with turbine trip solenoids and related safety circuits. From my experience, this board typically sits on the panel subplate inside the Mark VI cabinet and provides the relay-based, redundant paths used to energize or de-energize primary and emergency trip devices. If you’re maintaining a gas or steam turbine with a Mark VI platform, this board is one of those parts that quietly determines how smoothly your trip logic behaves during real events and routine testing.

The “H1BHH” build code indicates a later hardware/configuration option within the IS200TRLYH1B family. Fit, form, and function seem to be consistent with the TRLY lineage, which is why many maintenance teams keep this exact variant as a drop-in spare.

Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance; full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• Redundant trip relay architecture – Typically supports multiple, isolated relay channels for primary and emergency trip solenoids to meet turbine safety integrity expectations.
• Direct field wiring – Screw-terminal blocks simplify clean terminations of solenoids, interlocks, and feedback contacts.
• Mark VI native compatibility – Works with Mark VI trip driver and protection logic, commonly paired with boards such as TREG/TREL and VPRO in shutdown schemes.
• Panel-mounted terminal board design – Installs on cabinet subplates with standoffs; easy access for testing and maintenance.
• Service-friendly layout – Clear relay groupings and test points (where provided) help with routine trip testing and fault tracing.
• Robust industrial build – Designed for utility and O&G environments where vibration, electrical noise, and continuous duty are the norm.

Technical Specifications

Application Fields

This board is typically used where fast, deterministic shutdown is required:

• Gas and steam turbine protection in power generation plants
• Compressor trains and mechanical drives in oil & gas
• Industrial cogeneration and combined-cycle facilities
• Retrofit projects maintaining Mark VI safety chains

A maintenance supervisor recently told us the TRLY swap was the “least dramatic part” of their outage—no rewiring gymnastics, terminals lined up as expected, and trip tests passed on the first run. That’s usually what you want from a safety board.

Advantages & Value

• Reliability in the trip chain – Redundant relay paths reduce single-point vulnerabilities during emergency shutdowns.
• Compatibility – Drop-in replacement for TRLY positions in Mark VI cabinets; works with common companions such as TREG/TREL and VPRO.
• Downtime savings – Simple panel mounting and terminal layout help maintenance teams turn outages faster.
• Lifecycle support – Keeping the correct build code (H1BHH) on the shelf avoids last-minute fit/option mismatches.

Installation & Maintenance

• Environment – Install in a clean, ventilated Mark VI cabinet. Maintain cabinet ambient typically within 0–60°C and avoid condensing humidity.
• Mounting – Use the original standoff locations and hardware torque. Keep relay groups and terminal labels visible for testing.
• Wiring – Segregate high-energy trip conductors from low-level I/O. Verify solenoid coil voltage (often 125 VDC) and correct polarity. Tighten terminals to spec and re-check after 24 hours.
• Safety – Lockout/tagout control power. Discharge stored energy, and follow ESD handling when touching the board.
• Routine checks – Exercise trip relays during scheduled outages, inspect terminals for looseness/corrosion, and confirm continuity to each solenoid. Replace relays if contact resistance drifts out of spec.
• Firmware – This is a terminal/relay board; no field firmware. Keep Mark VI controller/protection firmware aligned for proper trip logic.

Quality & Certifications

• GE industrial-grade manufacturing for Mark VI platforms
• Typically supplied to CE-compliant systems; UL/cUL recognition is common at the cabinet/system level
• RoHS status can vary on legacy builds; confirm per lot if this is critical for your site
• 365-day warranty as stated above

Common Companion Modules (for context)

• IS200TREG* / IS200TREL* – Trip/driver boards that provide the energy and control to the TRLY terminal outputs.
• IS200VPRO* – Protection module frequently involved in trip decision logic.
• Mark VI controllers & I/O – Coordinate trip commands, feedback monitoring, and permissives.

If you’re consolidating spares, the IS200TRLYH1BHH typically serves as a reliable, like-for-like replacement within the TRLY family. You might notice that aligning the board option codes with your existing cabinet records makes FAT/SAT and outage testing a lot smoother.