Description
Technical Parameters
Technical Specifications
|
Manufacture |
GE |
|
Model |
531X300CCHAGM5 |
| Part Number | 531X300CCHAGM5 |
|
Description |
DC300 MCC CARD |
|
Origin |
USA |
|
Dimension |
30*25*5cm |
|
Weight |
0.55kg |
PROTECTION SYSTEMS
Trip Oil：
A hydraulic trip system called Trip Oil is the primary protection interface between the turbine control and protection system and the components on the turbine which admit, or shut–off, fuel. The system contains devices which are electrically operated by SPEEDTRONIC control signals as well as some to tally mechanical devices.
Besides the tripping functions, trip oil also provides a hydraulic signal to the fuel stop valves for normal start–up and shutdown sequences. On gas turbines equipped for dual fuel (gas and oil) operation the system is used to selectively isolate the fuel system not required.
Significant components of the Hydraulic Trip Circuit are described below.
Inlet Orifice：
An orifice is located in the line running from the bearing header supply to the trip oil system. This orifice is sized to limit the flow of oil from the lube oil
system into the trip oil system. It must ensure adequate capacity for all tripping devices, yet prevent reduction of lube oil flow to the gas turbine and other equipment when the trip system is in the tripped state.
Dump Valve：
Each individual fuel branch in the trip oil system has a solenoid dump valve (20FL for liquid, 20FG for gas). This device is a solenoid–operated spring–return spool valve which will relieve trip oil pressure only in the branch that it controls. These valves are normally energized–to–run, deenergized–to–trip.This philosophy protects the turbine during all nor-mal situations as well as that time when loss of dc power occurs.
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