The GE IS200SPROH1A is a Backup Protection Terminal Board designed for the Mark VIe Distributed Gas Turbine Control Systems. It provides redundancy in protection by conditioning speed signals and voltage inputs for the PPRO I/O pack, ensuring reliable turbine operation.
Specifications
Parameter
Specification
Part Number
IS200SPROH1A
Manufacturer
General Electric
Series
Mark VIe
Relay Channels
12
Voltage Sensors
2 (bus and generator PTs)
Speed Pickup Range
2 Hz
Sensitivity
27 mV
Power Requirements
+5 VDC, 6 A
Supply Voltage
24 VDC
Mounting
DIN‑rail mounting
Technology
Surface mount
Operating Temperature
30 to 65 °C
Dimensions
15.9 cm × 17.8 cm
Manual Reference
GEH‑6721D
Country of Origin
United States
Availability
In Stock
Functional Description
The IS200SPROH1A hosts aPPRO I/O pack and conditions speed signal inputs while providing bus and generator voltage sensing through integrated PTs. It features a DC‑37 connector for communication with backup trip relay terminal boards.
SPROH1A: 24 barrier terminals in a pluggable block.
SPROH2A: 24 Euro‑style pluggable box terminals.
This redundancy ensures that if the primary protection system fails, the backup relays can detect faults and isolate affected sections of the electrical network.
Installation
Mounted on a sheet metal carrier with DIN‑rail or bolted directly into a panel.
Speed signals and PT inputs wired with #18 AWG conductors.
Barrier terminal block (SPROH1A) or Euro‑block (SPROH2A) removable for board replacement.
PPRO I/O pack mounts directly on JA1 connector.
Backup trip relay cable connects via JA3 DC‑37 pin connector.
Operation
PT inputs wired to terminals 1–4.
Speed inputs wired to terminals 19–24.
Terminals 7–15 reserved for future expansion.
JA1 and JA3 connectors provide I/O pack and trip relay connectivity.
Frequently Asked Questions
How does the Backup Protection Terminal Board work? It continuously monitors the primary protection system. If the primary protection fails, backup relays detect faults and isolate the affected section.
Why is a Backup Protection Terminal Board necessary? Redundancy ensures reliability and safety, preventing damage or hazards if primary protection devices malfunction.
How often should it be tested? Regular testing is essential, typically during maintenance intervals or per industry standards.
