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IS200SPROH1A - Backup Protection Terminal Board is available in stock which ships the same day.
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SPECIFICATIONS:
Part Number: IS200SPROH1A
Manufacturer: General Electric
Series: Mark VIe
Number of relay channels: 12
Product Type: Backup Protection Terminal Board
Generator and bus voltage sensors: 2
Magnetic speed pickup pulse rate range: 2Hz
Power Requirements: +5 V dc, 6 A
Power supply voltage: 24 V dc
Magnetic speed pickup sensitivity: 27 mV
Mounting: DIN-rail mounting
Technology: Surface mount
Operating temperature: 30 to 65°C
Size: 15.9 cm high x 17.8 cm
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH-6721D
FUNCTIONAL DESCRIPTION:
IS200SPROH1A is a Backup Protection Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Gas Turbine Control Systems. The SPRO terminal board hosts a PPRO I/O pack. It conditions speed signal inputs for the PPRO and contains a pair of potential transformers (PTs) for bus and generator voltage input. SPRO accepts direct mounting of one PPROH1A and provides a DC-37 connector for a cable to the selected backup trip relay terminal board. It has a DC-37 pin connector adjacent to the PPRO pack connector that accepts a cable leading to a Mark VIe backup trip relay terminal board.
INSTALLATION:
The SPRO and a plastic insulator mount on a sheet metal carrier, which mounts on a DIN rail. Optionally, the SPRO and insulator mount on a sheet metal assembly, which bolts directly into a panel. Speed signals and PT inputs are wired directly to the terminal block using typical #18 AWG wires. The SPROH1A barrier terminal block is removable for board replacement. The SPROH2A Euro-Block type terminal block has terminals that can be removed for board replacement. The PPRO I/O pack mounts directly on connector JA1 of the SPRO. A DC-37 pin conductor cable plugs into connector JA3 of SPRO with the other end attached to the selected backup trip terminal board.
OPERATION:
In the following drawing, the PT inputs to SPRO are shown on terminals 1-4. Three-speed inputs are shown on terminals 19-24. Terminals 7-15 are reserved for future control feature expansion and are routed to the JA1 PPRO connector. Terminals 5-6 and 16-18 have no board connection. The JA1 and JA3 connectors provide locations for PPRO and the trip terminal board cable.
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How does the Backup Protection Terminal Board work?
The board continuously monitors the primary protection system. If the primary protection (like a relay) fails to operate during a fault condition, the backup relays on this board are designed to detect the fault and isolate the affected section of the electrical network.
Why is a Backup Protection Terminal Board necessary?
Electrical systems require redundancy in protection to ensure reliability and safety. If primary protection devices malfunction or fail, the backup board can prevent potential damage or hazards by isolating faulty sections promptly.
How often should the Backup Protection Terminal Board be tested?
Regular testing is essential to verify the functionality of the backup protection. Testing frequency depends on industry standards and specific system requirements but is typically done during maintenance intervals or according to a predetermined schedule.
