GE IS220PPROS1B Mark VIe Backup Turbine Protection I/O Pack

PPRO Backup Turbine Protection Module

Functional Description

The Emergency Turbine Protection I/O pack (PPRO) and associated terminal boards provide an independent backup overspeed protection system with a backup check for generator Synchronization to a utility bus. They also provide an independent watchdog function for the primary control. A typical protection system consists of three triple modular redundant (TMR) PPRO I/O packs mounted to a separate simplex protection (SPRO) terminal board. A cable, with DC-37 pin connectors on each end, connects each SPRO to the designated emergency trip board:

• TREG: Gas Turbine Emergency Trip Terminal Board

• TREL: Large Steam Turbine Emergency Trip Terminal Board

• TRES: Small/Medium Steam Turbine Emergency Trip Terminal Board

• TREA: Turbine Emergency Trip Terminal Board

An alternate arrangement puts three PPRO I/O packs directly on TREA for a single-board TMR protection system. The PPRO has an Ethernet connection for IONet communications with the control modules.

The Mark* VIe control is designed with a primary and backup trip system that interacts at the trip terminal board level. Primary protection is provided with the Turbine Primary I/O pack, PTUR, operating a primary trip board (TRPG,TRPL, TRPS, TRPA). Backup protection is provided with the PPRO I/O pack operating a backup trip board (TREG, TREL, TRES, TREA).

PPRO accepts three speed signals, including basic overspeed, acceleration, deceleration, and a hardware implemented overspeed. The pack monitors the operation of the primary control and can monitor the primary speed as a sign of normal operation. PPRO monitors the status and operation of the selected trip board through a comprehensive set of feedback signals. If a problem is detected, PPRO will trip the backup trip relays on the trip board and activate a trip on the primary control. The pack is fully independent of and unaffected by the primary control operation.

A maximum of three trip solenoids can be connected between the primary and emergency trip terminal boards. Connecting a solenoid between the boards isolates the power on both sides of the solenoid as well as visibility of solenoid voltage as a system feedback. The primary/emergency trip boards TRPG/TREG, TRPL/TREL, and TRPS/TRES are designed to operate as a pair and use cabling between the boards for system connections. TRPA and TREA are designed with no pairing required and can be used independently of each other. When TRPA and TREA are paired, they function the same as other board pairs.

Technical Specifications

Warranty :    We offer one year warranty for all original new product.

Delivery   :     We will choose the DHL/FEDEX/TNT/UPS.   

Payment   :    100% advance payment bank wire transfer.

Returns   :    Quality problems can be replaced within 15 working days from the date of receipt of the product,  repair services can be provided within 1 year.

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  One year warranty on sold items

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