Functional Diagrams For Protection - ABB Relion Applications Manual

Section 3
REU611 standardized configuration
3.4.3.1
34
The analog channels have fixed connections towards the different function blocks
inside the protection relay's configuration. Exceptions to this rule are the 12 analog
channels available for the disturbance recorder function. These channels are freely
selectable and a part of the disturbance recorder's parameter settings.
The line and bus voltages to the protection relay are fed from voltage transformer. The
residual voltage to the protection relay is fed from either residual connected VTs, an
open delta connected VT or internally calculated.

Functional diagrams for protection

The functional diagrams describe the protection functionality of the protection relay
in detail and picture the factory default connections.
3U
BLOCK
3U
BLOCK
3U
BLOCK
GUID-A6031EA6-2B8B-41D9-BCA8-5EB5446B9594 V1 EN
Figure 15: Overvoltage protection
Three overvoltage protection stages PHPTOV1...3 offer protection against
overvoltage conditions. All operate signals are connected to the master trip and to
alarm LED 1.
OVERVOLTAGE PROTECTION INDICATION
PHPTOV1
3U>(1)
59(1)
OPERATE
START
PHPTOV2
3U>(2)
59(2)
OSWGAPC7
OPERATE
IN_1
START
IN_2
IN_3
PHPTOV3
3U>(3)
59(3)
OPERATE
START
1MRS758335 B
SELGAPC4
IN_8 OUT_1
OUT
OR
Application Manual
LED 1
REU611