GE IS200TREAH2A Turbine Trip Board

IS200TREAH2A GE Turbine Emergency Trip Terminal Board

Product Introduction

The IS200TREAH2A works as a key safety component in the GE Mark VIe control system. This board directly connects to PPRO turbine I/O packs. It trips the turbine during dangerous conditions. First, it measures turbine speed using passive pulse rate devices. Next, it uses TMR voting logic to close trip relays. Therefore, the system remains safe and reliable. Additionally, this board monitors voltage levels across the trip string. You can place trip relays anywhere along the circuit. Moreover, three isolated voltage sensors check power and solenoid voltages.

Technical Specifications

The IS200TREAH2A includes customer input terminals on two 24-point pluggable blocks (H1A, H2A). Alternatively, you can use 48 pluggable Euro-style terminals (H3A, H4A). Nine passive pulse rate devices measure turbine speed. Specifically, three devices exist per X/Y/Z section. Jumper blocks allow one set of speed inputs to fan out to all three PPRO I/O packs. This feature ensures synchronization and redundancy.

The board provides two sets of output contacts. One set operates at 24 V dc (H1A, H3A). The other set works at 125 V dc (H2A, H4A). These contacts form TMR voted outputs to trip the system. Four voltage detection circuits monitor the trip string from 24 V dc to 125 V dc. Meanwhile, daughterboard connectors support optional expansion.

Trip relays use six individual form devices in a voting pattern. If any two controllers vote to close a relay, the path conducts. A sensing circuit checks each relay set for short circuits. When the relays should open but voltage stays present, the circuit detects a short. Then it sends an alarm to the PPRO pack. This sensing circuit uses inputs from all three packs to avoid false alarms.

Voltage Monitor Applications

Three general-purpose isolated voltage sensor inputs monitor the trip system. For instance, one common use is power supply voltage monitoring (PWR). This ensures the trip strings receive correct voltage. Another typical use is solenoid voltage monitoring (SOL1, SOL2). The system checks the voltage applied to solenoids. These sensors are flexible. You can use them for other monitoring needs as well.

Mechanical and Environmental Parameters

• Operating Temperature: -30°C to 65°C

• Technology: Surface mount

• Size: 33.0 cm high x 17.8 cm wide

• Country of Manufacture: USA

Furthermore, the IS200TREAH2A uses surface mount technology for better reliability. This board operates in harsh industrial environments. Its temperature range covers most turbine control rooms and outdoor enclosures.

Installation Guidelines

First, mount the IS200TREAH2A securely inside the Mark VIe cabinet. Use the provided mounting holes. Next, connect customer inputs to H1A, H2A, H3A, or H4A terminals. Ensure wire gauges match terminal specifications. Then attach speed sensors to the nine passive pulse inputs. Set jumper blocks correctly for speed input fanning. After that, wire output contacts to the trip string. Place trip relays at the desired positions along the circuit. Finally, connect voltage monitors to power supplies and solenoids. Double-check all wiring before powering up.

Packaging List

• IS200TREAH2A Turbine Emergency Trip Terminal Board (1 unit)

• Anti-static bag (1 piece)

• Protective foam padding (1 set)

• Installation instruction sheet (1 copy)

Note: No certificates or warranty documents are included in the package.

FAQ

1. What control system does the IS200TREAH2A belong to?
It belongs to the GE Mark VIe series. This board specifically handles turbine emergency trip functions with PPRO I/O packs.

2. Can I use this board to monitor both 24V and 125V circuits?
Yes. The IS200TREAH2A includes four voltage detection circuits rated from 24V dc to 125V dc.

3. How does the board detect a shorted relay?
A sensing circuit checks each relay set. When relays should open but voltage remains, it signals a short to the PPRO pack.

4. Which shipping carriers do you use?
We ship via FedEx, UPS, and DHL. All carriers offer tracking and fast delivery.

5. Are the speed sensors included with the board?
No. The IS200TREAH2A provides nine passive pulse rate device inputs, but you must supply the sensors separately.