World Of Controls understands the criticality of your requirement and works towards reducing the lead time as much as possible.
IS230SPROH1A - Emergency Protection Terminal Board is available in stock which ships the same day.
IS230SPROH1A - Emergency Protection Terminal Board comes in UNUSED as well as REBUILT condition.
To avail our best deals for IS230SPROH1A - Emergency Protection Terminal Board, contact us and we will get back to you within 24 hours.
SPECIFICATIONS:
Part Number: IS230SPROH1A
Manufacturer: General Electric
Series: Mark VIe
No.of Analog Voltage Inputs: 6
Product Type: Emergency Protection Terminal Board
Magnetic speed pickup pulse rate range: 2Hz to 20,000Hz
Magnetic speed pickup pulse rate accuracy: 0.05%
Magnetic speed pickup sensitivity: 27 mV pk
Speed Input Sensitivity: 0 - 2 kHz
Technology: Surface Mount
Common Mode Voltage Range: ±5 V
Size: 15.9 cm high x 17.8 cm wide
Operating temperature: 30 to 65 °C
Repair: 3-7 Days
Availability: In Stock
Country of Origin: United States
Manual: GEH-6721D
FUNCTIONAL DESCRIPTION:
IS230SPROH1A is an Emergency Protection Terminal Board manufactured and designed by General Electric as part of the VIe Series used in GE Distributed Gas Turbine Control Systems. The Emergency Protection (SPROH1A) terminal board is an essential component in GE’s Mark VI turbine control systems, designed to ensure reliable overspeed and emergency protection. It works with the PPRO I/O pack to process speed signal inputs and features a pair of potential transformers (PTs) to handle voltage inputs from both the generator and bus. This enables accurate monitoring of electrical and mechanical conditions, allowing the system to respond quickly to abnormal events.
For enhanced reliability, the SPROH1A includes a DC-37 connector adjacent to the PPRO I/O pack, which allows connection to a backup trip relay terminal board. It also supports direct mounting of the PPROH1A module, simplifying installation and reducing wiring complexity. By providing flexible interfacing options and supporting redundant protection paths, the SPROH1A ensures robust emergency shutdown capabilities, making it a critical element in turbine safety and operational reliability.
INSTALLATION:
The SPROH1A terminal board is mounted along with a plastic insulator on a sheet metal carrier that is designed to attach easily to a standard DIN rail, providing a secure and modular installation option. Alternatively, the SPROH1A and insulator can be mounted on a sheet metal assembly that bolts directly into a panel, offering flexibility for different control system layouts. Both speed signals and potential transformer (PT) inputs are wired to the terminal block using standard #18 AWG wires, ensuring reliable connections while maintaining industry-standard wiring practices.
For ease of maintenance and replacement, the SPRO1A barrier terminal block is fully detachable, allowing the terminal board to be swapped out without disturbing the wiring. Similarly, the SPRO2A Euro-block terminal block features removable terminals to facilitate quick replacement of the board while keeping all connections intact. The I/O pack installs directly onto connector JA1 of the SPROH1A, providing a compact, plug-and-play interface. A DC-37 pin conductor cable connects to JA3, linking the SPROH1A to the selected backup trip terminal board, ensuring redundancy and reliable emergency protection for turbine operation.
OPERATION:
On the SPROH1A terminal board, terminals 19–24 are specifically designated for three-speed inputs, allowing the system to accurately monitor turbine rotational speeds. Terminals 7–15 are reserved for potential future control feature expansions and are internally connected to the JA1 PPRO connector, providing flexibility for system upgrades or additional functionality. Terminals 5–6 and 16–18 are not connected to the board and are left unused.
The board’s JA1 and JA3 connectors serve as the primary interfaces for critical system connections. JA1 is used for the installation of the PPRO I/O pack, while JA3 provides a connection point for the trip terminal board cable, linking the SPROH1A to the chosen backup trip relay system. This arrangement ensures reliable speed sensing, protection monitoring, and seamless integration of both primary and backup safety pathways.
WOC provides one of the most extensive inventories of OEM replacement parts for GE Distributed Control Systems, ensuring immediate access to critical components for maintenance, upgrades, and emergency replacements. Our offerings include brand-new as well as professionally refurbished boards, all backed by a comprehensive warranty to guarantee performance and reliability. Beyond parts supply, WOC delivers specialized repair services for faulty or damaged boards, helping clients minimize downtime and maintain optimal system operation. Supported by a highly experienced, 24/7 team of automation and control experts, we provide technical guidance, troubleshooting, and assistance with any OEM-related needs. For detailed information on pricing, part availability, or to request repairs, customers can contact our team via phone or email, ensuring fast, dependable support whenever it is required.
What is the IS230SPROH1A?
The IS230SPROH1A is an Emergency Protection (SPROH1A) terminal board used in GE Mark VI and Mark VIe turbine control systems. It provides overspeed protection and emergency shutdown functionality by processing turbine speed signals and monitoring voltage inputs from both the generator and bus.
What is the primary function of the SPROH1A terminal board?
It provides overspeed and emergency protection for turbines by processing speed signal inputs via the PPRO I/O pack and monitoring voltage signals from the bus and generator using onboard potential transformers (PTs).
Which connectors are used on the SPROH1A?
JA1 is used to connect the PPRO I/O pack, while JA3 is used for the backup trip relay terminal board via a DC-37 conductor cable. These connectors allow integration with primary and backup protection systems.
Who provides support and repair services?
WOC supplies new and refurbished SPROH1A boards, repair services, and 24/7 technical support for troubleshooting, installation guidance, and emergency replacements.
