Simplex Control System - GE EX2100 User Manual

Ethernet Data Highway to
Mark VI, LCI, and HMI
Keypad
Computer (Tool)
3-phase
Voltage
PT
Sensing
PT
3-phase
Current
Sensing
Contact
Inputs
TRIP TRIP
TRIP TRIP
86 86 86 86
2nd 2nd
2nd 2nd
TRIP TRIP
TRIP TRIP
Contact
Outputs
2-12 Chapter 2 Functional Description

Simplex Control System

The interconnections between the simplex control and the terminal boards,
generator protection modules, and power supply are shown in Figure 2-5. Only one
EPSM power supply is used but this can have both ac and dc supplies for increased
reliability.
PT
PT
CT
CT
EPCT
70 Vdc
ECTB
70 Vdc
EPSM
Power
Supply
EPDM
125 V dc
Battery
Figure 2-5. Simplex Control and Cabling to Terminal Boards
Control Module M1
Fiber-optic Feedback
5 Vdc
EGDM
15 Vdc
Field
24 Vdc
Ground
Detector
GPA power
Coil Power
125 Vdc
Option:
DACA
Rectified ac
To Flashing
EXTB
panel
53A 41
pilot close
41 Device
De-
excitation
53B 41
Crowbar
pilot trip
70 V dc
De-ex
pilot
125 Vdc
Gate Pulse Amplifier
EGPA
To SCRs
125Vdc
Field Current
& Voltage
EDCF
PPT and air
core CT
ac feedbacks
EACF
EXAM
De-
excitation
EDEX
Optional:
Crowbar
GEH-6632 EX2100 User's Guide