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The GE IS200TRLYH1B Turbine Relay Output Terminal Board Module is a rugged, purpose-built discrete output interface used in GE Mark VI and EX2100 turbine control systems. This board consolidates and conditions relay driver outputs from protection and control logic to field devices such as annunciators, solenoids, contactors, alarms, and auxiliary relays. Designed for demanding industrial power generation environments, the IS200TRLYH1B ensures reliable actuation of critical discrete functions with high noise immunity and consistent response performance.

Delivering dependable switching and clear output segregation, this module is ideal for applications where safe and correct signal propagation is essential to protect turbines, generators, and auxiliary systems.

Technical Specifications

Specification	Details
Model	IS200TRLYH1B
Brand	GE
Module Type	Relay Output Terminal Board
System Compatibility	Mark VI / EX2100 Control Systems
Primary Function	Discrete relay output conditioning and distribution
Output Type	Multiple Form-C relay contacts
Output Rating	Protection-rated contact switching levels (field dependent)
Signal Conditioning	Isolation buffering, transient suppression, output filtering
Mounting	Rack / backplane in control cabinet
Operating Environment	Industrial power generation cabinets
Dimensions (L × W × H)	250 × 120 × 35 mm (approx.)
Weight	0.88 kg (approx.)

This board is engineered to provide stable relay outputs to protect external field loads and ensure accurate signal propagation in protection and control sequences.

Recommended Related Models

To build a complete turbine protection and control rack, pair the IS200TRLYH1B with:

IS200DSPXH1D – Digital Signal Processor Control Board
IS200TPROH1C – Turbine Protection Module
IS200TBCIH1B – Breaker & Contact Input Module
IS200STAOH2A – Status & Timing Output Handler
IS200STCIH2A – Status & Timing Control Input Handler

Together, these modules form a cohesive signal acquisition, logic processing, and discrete output distribution architecture.

Popular GE Mark VI / EX2100 Modules

In turbine and excitation systems that include the IS200TRLYH1B, you’ll also often find:

IS200EACFG3A – AC Feedback Conditioning Board
IS200EDCFG1B – DC Feedback Board
IS200EXHSG3A – High-Speed Gate Control Board
IS200IGPAG2A – IGBT Gate Pulse Amplifier
IS200ERBPG1A – Remote I/O Backplane Board

These modules help complete feedback, protection, output actuation, and control signal pathways.

Applications

The IS200TRLYH1B excels in systems requiring robust discrete output control, including:

Turbine protection trip actuation
Generator breaker and contactor drive signals
Alarm annunciation and status indication
Auxiliary control logic output distribution
Safety interlock and sequencer actuation

Its reliable relay outputs support both safety and operational logic in demanding industrial environments.

Advantages

Industrial-Grade Reliability
Designed to operate continuously within electrically noisy, high-vibration power plant cabinets.

Accurate Output Signal Conditioning
Buffers and filters output contacts to ensure clean actuation under field load conditions.

Modular & Serviceable
Board-level replaceability simplifies maintenance and reduces system downtime.

Clear Output Segregation
Organized terminal layout enables straightforward wiring and field troubleshooting.

Enhanced Protection Compatibility
Supports protective relay outputs used in turbine and generator safety circuits.

Technical FAQs

What does the IS200TRLYH1B do?
It provides conditioned relay outputs for control and protection functions.
Which GE systems use this module?
GE Mark VI and EX2100 turbine control environments.
What types of outputs does it support?
Discrete Form-C relay contact outputs for field devices.
Where is this module installed?
In a control cabinet rack or backplane within the system assembly.
What are the approximate dimensions?
250 × 120 × 35 mm (approx.).
How much does it weigh?
Approximately 0.88 kg.
Can it handle high-current loads?
Relay contact ratings depend on field load specifications but are suitable for typical protective and auxiliary actuation.
Is this board suitable for safety circuits?
Yes — its outputs are used in protection and interlock signal distribution.
Does it filter noise on outputs?
Yes — built-in transient suppression and buffering help maintain signal integrity.
Why is this module critical in power plants?
Accurate relay output distribution ensures correct field actuation of alarms, breakers, and protective devices, contributing to safe and reliable turbine operation.