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IS230STURH1A - Simplex Primary Turbine Protection Input Terminal Board is available in stock which ships the same day.
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SPECIFICATIONS:
Part Number: IS230STURH1A
Manufacturer: General Electric
Series: Mark VIe
Product Type: Simplex Primary Turbine Protection Input Terminal Board
Number of channels: 12
Common Mode Voltage Range: +5 V dc
Maximum Lead Resistance: 15 ohms
Analog output current: 0-20 mA
Operating temperature: -30 to 65 °C
Size: 8.26 cm high x 4.18 cm
Frequency: 50 or 60 Hz
Repair: 3-7 Days
Availability: In Stock
Weight: 2 lbs
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
IS230STURH1A is a Simplex Primary Turbine Protection Input Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Turbine Control Systems. The Simplex Primary Turbine Protection Input (STURH1A) terminal board is a simplex S-type version of the turbine terminal board (TTUR), designed to provide connections for turbine-specific primary trip (PTUR) signals, speed and synchronizing inputs, as well as trip relay outputs or cables to drive a primary trip board. It is typically used in mechanical drives that require overspeed protection without a synchronizing function, generator drive systems that need both overspeed protection and primary synchronization, and other applications that utilize the four pulse input circuits of the PTUR. The STUR terminal board maintains the same physical dimensions, customer terminal locations, and I/O pack mounting as other S-type terminal boards, and its design ensures that no components extend above an attached PTUR I/O pack, allowing for double stacking of terminal boards.
The STURH1A terminal board offers several key functions to support turbine protection and control. It features a DC-62 pin connector for mounting a single PTUR I/O pack and can accept up to four speed input signals. A 48-terminal Euro-style box-type terminal block is provided for customer connection points. The board includes two trip solenoid outputs, K1 and K2, each consisting of a safety relay (H1, H2), and a DC-37 pin connector for connecting a TPRG or TPRS primary trip relay (H3, H4). Additionally, it supports two PT inputs for primary synchronization (H2, H4), which accept generator and bus voltage signals from potential transformers. For primary synchronization, it also provides two relay outputs (K25 and K25P), which must close to supply the 125 V DC power required to close the main breaker 52G.
OPERATION:
STURH1A is available in four distinct configurations. STUR is not available with fixed box terminals. It uses pluggable type terminals. Two groups offer on-board trip relays, and two groups offer DC-37 pin connectors for using an external trip board. Components supporting generator applications will be omitted from the two groups used for mechanical applications and added to the groups used for generator applications.
SPEED INPUT:
STUR provides four speed input circuits that accept passive speed sensors or active speed sensors. When passive sensors are used, the signal is applied between terminals PR#_H and PR#_L, where # is 1 through 4. Sensitivity of the passive sensor input is such that the PTUR I/O pack is able to sense speeds as low as 2RPM. When active speed sensors are used, the signal is applied between terminals TTL# and PR#_L.
SIMPLEX TURBINE APPLICATIONS:
In simplex applications, STUR accepts up to four pulse rate signals used to measure turbine speed. The PT signals provide voltage input from both sides of a 52G circuit breaker, permitting automatic synchronization to be performed. The on-board trip relays provided by the H1 and H2 groups of STUR create a self-contained overspeed and synchronizing function. It is also possible to use the H3 or H4 group of STUR in a simplex application with a simplex trip terminal board cabled into STUR using the DC-37 pin connection.
PRIMARY SYNCHRONIZING:
STURH1A and STURH4 used with PTUR provide support for synchronized closure of a 52G primary breaker. Two PT inputs are provided for Bus and Generator voltage on terminals 21 through 24. Breaker positive power at 24, 48, or 125 V dc is applied to terminal 27 (PGEN), and the return is applied to terminal 32 (NGEN). The presence of this voltage is indicated by the BKRVLT signal. Positive power passes through a permissive relay K25P to terminal 28 (AUTO) with power indicated by the BKRPRM signal. Power then passes through the synchronizing pilot relay K25 to terminal 29 (MAN) as indicated by the BKRGES signal.
If a backup sync-check relay is used, it is to be wired between terminals 29 and 30 (BKRH) with closure indicated by signal BKRGXS. If a backup sync-check is not used, a jumper between terminals 29 and 30 is used to complete the circuit, and BKRGXS and BKRGES both indicate that power is applied to the breaker coil. The breaker coil or a pilot relay is to be wired between terminals 31(BKRH) and 32 (NGEN).
WOC is a leading global supplier of GE Distributed Turbine Control System replacement parts, offering one of the most extensive inventories in the industry to ensure rapid and reliable availability when operational continuity is critical. In addition to supplying unused and rebuilt components backed by a full warranty, it provides comprehensive repair services for faulty boards, restoring them to full OEM-level performance and ensuring long-term reliability. A team of highly trained engineers and technical specialists is available 24/7 to provide expert support, troubleshoot complex issues, and assist with all automation and turbine control system requirements. With a commitment to delivering customized solutions that meet both standard and specialized needs, we help clients maximize system uptime and operational efficiency. For detailed information on part availability, pricing, repairs, or technical guidance, customers can contact the knowledgeable team directly via phone or email, ensuring prompt and professional assistance for every request.
What is the IS230STURH1A?
The IS230STURH1A is a simplex S-type terminal board designed for primary turbine protection. It provides connections for turbine-specific primary trip (PTUR) signals, speed and synchronizing inputs, and trip relay outputs or cabling for a primary trip board. It is used in applications requiring overspeed protection, primary synchronization, or four-pulse PTUR input circuits.
What inputs does the STUR terminal board accept?
It accepts up to four speed input signals and two PT inputs for primary synchronization. The PT inputs receive generator and bus voltage signals from potential transformers, enabling accurate monitoring of turbine speed and synchronization.
What outputs are provided by the IS230STURH1A?
The board provides two trip solenoid outputs, K1 and K2, each supported by safety relays (H1, H2). For primary synchronization, it provides two relay outputs, K25 and K25P, which supply 125 V DC to close the main breaker (52G).
What connectors are available on the STUR terminal board?
It features a DC-62 pin connector for mounting a PTUR I/O pack and a DC-37 pin connector for TPRG or TPRS primary trip relays (H3, H4). A 48-terminal Euro-style box-type terminal block is also provided for customer connections.
