GE Turbine Primary Trip Board IS200VTURH2BAB

Configured for high-speed shaft speed processing in the Mark VI Speedtronic control network, the GE IS200VTURH2BAB (base model IS200VTUR) provides direct physical execution of turbine overspeed protection logic and magnetic pickup signal conversion. It interfaces with emergency trip boards via hard-wired relay contacts and transmits processed speed data to the control backplane without external supervisory intervention.

Suffix Breakdown & Model Matrix

Hardware Specifications

Firmware Flash Compatibility

In TMR-configured Mark VI racks, firmware revisions must be identical across all three VTUR modules to prevent checksum mismatch during cross-channel voting. Flash updates require offline loading via GE ToolboxST software, and mismatched firmware may result in forced trip state on rack initialization.

Frequently Asked Questions

Q: Can the IS200VTURH2BAB be hot-swapped in an active Mark VI rack?

A: No. Backplane power must be removed prior to removal or insertion to prevent relay contact arcing and backplane bus corruption.

Q: Does the H2 hardware revision alter input scaling compared to earlier versions?

A: No. Input scaling remains consistent; changes are limited to component sourcing and PCB artwork. Firmware compatibility remains the determining factor.

Q: What is the expected relay life cycle under continuous duty?

A: Mechanical relay service life exceeds 100,000 operations at rated load; however, high-cycle applications should implement external solid-state interposing relays.

Field Installation Guidelines

Mount securely into the Mark VI rack using the injector/ejector handle until fully seated. Ensure all I/O cabling uses individually shielded twisted pair wiring with shield drain wires terminated to rack ground at one end only. Maintain minimum 50 mm separation between speed signal cables and high-power AC wiring to prevent inductive interference. Verify magnetic pickup air gap per turbine OEM specification before energizing the module.