DS200TCTLG1A - Large Steam Turbine Trip Circuit Board

SPECIFICATIONS:

Part Number: DS200TCTLG1A
Manufacturer: General Electric
Series: Mark V
Product Type: Large Steam Turbine Trip Circuit Board
Input Voltage: 24V DC
Output Voltage: 5V DC
Trip Signal Response: < 10 milliseconds
Relay Contact Rating: 5A
Operating Temperature: -20°C to +70°C
Humidity: 5%
Weight: 1.80 lbs
Repair: 3-5 Days
Availability: In Stock
Product of Origin: United States
Dimensions: 13.50 x 9.00 x 2.00
Price: $$$$
Manual: GEH-6195F

FUNCTIONAL DESCRIPTIONS:

DS200TCTLG1A is a Large Steam Turbine Trip Circuit Board manufactured and designed by General Electric as part of the Mark V Series used in Steam turbine control systems. This board is a part of the protection core and the master trip circuit, and it has three sets of three emergency trip relays in addition to at least two sets of primary trip relays (PTR1 & 2). (ETR1 & 2). While the ETRs are normally under the supervision of TCEA boards, the PTRs are typically under the control of other boards like the TCQA. The turbine will trip if two of the three relays in this system start to malfunction. It also has four auxiliary control outputs: an electrical lockout solenoid, an oil reset solenoid valve, a mechanical lockout solenoid, and an oil test solenoid.

If 2/3 ETR1s or 2/3 PTR1s are de-energized or the trip pushbutton is pressed, the mechanical trip solenoid valve (MTSV) will energize and trip the turbine. If 2/3 ETR2s or 2/3 PTR2s are de-energized, the electrical trip solenoid valve (ETSV) will de-energize and trip the turbine. The MTSV is powered from the 125 V dc bus in the internal power distribution core. The ETSV is powered by the same 24 V dc protective bus that powers all the ETR and PTR relays. The trip cards have at least two sets of three primary trip relays (PTR1 & 2) and two sets of three emergency trip relays (ETR1 & 2). Some applications require additional relays for other functions. In addition to the trip control relays, the TCTL card has the following four auxiliary control outputs available:

• Electrical Lock Out Solenoid (ELO)
• Mechanical Lock Out Solenoid (MLO)
• Oil Reset Solenoid Valve (ORST)
• Oil Test Solenoid (OTS)

WOC has the largest GE Speedtronic Steam Turbine Control System Replacement Parts in Stock. We can also supply unused and rebuilt backed-up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on parts and repairs, kindly contact our team by phone or email.

FREQUENTLY ASKED QUESTIONS:

What are common causes that trigger a turbine trip?

Common causes that trigger a turbine trip include overspeed, where the turbine exceeds its safe rotational speed; low lubrication oil pressure, which can lead to increased friction and damage; high vibration levels that may indicate mechanical issues; excessive exhaust temperature, which can compromise turbine components; and manual emergency shutdown commands issued during critical situations.

Why is redundancy important in a Trip Circuit Board?

Redundancy is crucial in a Trip Circuit Board to ensure the turbine’s safety under all circumstances. By incorporating duplicate circuits and backup systems, the board can continue functioning even if one component fails. This fail-safe design minimizes the risk of a safety system failure, ensuring that the turbine will still trip properly in case of emergency.

What are the signs of a malfunctioning Trip Circuit Board?

Signs of a malfunctioning Trip Circuit Board include inconsistent or delayed shutdown responses, failure to detect fault conditions, irregular indicator lights or error messages, and unintentional turbine trips without valid reasons. Operators should address these signs immediately by inspecting the board, checking input signals, and repairing or replacing defective parts to prevent operational risks.