Protection; Block Diagram; Overvoltage Protection - ABB REU 610 Technical Reference Manual

REU 610
5.1.4.
5.1.4.1.
Switchgroups for
digital inputs
Reset 1 1)
Reset 2 2)
Reset 3 3)
Setting group
Time sync
DI1
Ext Trip
Digital inputs
DI2
Ext Trig CBFP
DI3
Optional digital
Ext Trig Trip lockout
DI4
inputs
Trip lockout reset
DI5
(I/O module)
Block U>
Block U>>/U2>
Block U<
Block U<</U1<
Block U 0 >
Block U 0 >>
U
12
U
23
U
31
Analog inputs
U
0
The dashed line indicates optional functionality.
1) Clear indications by the digital input signal
2) Clear indications and unlatch output contacts by the
digital input signal
3) Reset indications and memorized values; unlatch output
contacts by the digital input signal
Fig. 5.1.4.1.-1

Block diagram

5.1.4.2.
24
Voltage Relay
Technical Reference Manual
The functions of the relay are selected with the switches of switchgroups SGF, SGB,
SGR and SGL. The checksums of the switchgroups are found under SETTINGS in
the HMI menu. The functions of the switches are explained in detail in the
corresponding SG_ tables.

Protection

Block diagram
Protection relay functions
SGB1...5
U>
Block
U<
Block
Uo>
Block
U
U
12
U
23
U
31
Uo
Uo
Disturbance recorder
(4 analog + up to 8 digital channels)
DI1
U
12
DI2
U
23
DI3
U
31
DI4
U
DI5
0

Overvoltage protection

The overvoltage protection can be based on either conventional voltage
measurement or calculated negative phase-sequence voltage.
The low-set overvoltage stage U> is based on conventional voltage measurement.
The high-set overvoltage stage U>> can be set to be based on either
Conventional voltage measurement ( U>> mode selected), or
*
Calculated negative phase-sequence voltage ( U
*
Switchgroups for
programmable LEDs
U>> / U2>
U> Trip
U>>/U2> Trip
U< Trip
Start NPS Start
U<</U1< Trip
Trip Block Trip
U 0 > Trip
U<< / U1<
U 0 >> Trip
Trip lockout
DI1
Start
Start
PPS
DI2
Trip
Trip
Block
DI3
DI4
Uo>>
DI5
CBFP Trip
DR Triggered
Start Start
Trip Trip
Block
Switchgroups for
CBFP
output contacts
PO1
NPS
U> Start
EXT TRIG PO2
PPS
U> Trip
U>>/U2> Start
Trip lockout
U>>/U2> Trip
U< Start
Ext Trig
U< Trip
Reset
U<</U1< Start
Trip lockout
PO3
U<</U1< Trip
U 0 > Start
SGF1...SGF5
U 0 > Trip
, DR
U 0 >> Start
U> Start U 0 >> Trip
U> Trip
Ext T r ip
U>>/U2> Start
U>>/U2> Trip
U< Start
T r ip lockout
U< Trip
U<</U1< Start
Warning
U<</U1< Trip
U 0 > Start
U 0 > Trip
IRF INDICATION
U 0 >> Start
START/ALARM INDICATION
U 0 >> Trip
TRIP INDICATION
SGL1...8
LED1
LED2
LED3
LED4
Programmable
LED5 LEDs
LED6
LED7
LED8
SGR1...8
PO1
PO2
Digital outputs
PO3
(Output contacts)
SO1
SO2
SO3 Optional digital
outputs
SO4
(I/O module)
SO5
IRF
IRF indication LED (green)
Start/Alarm (yellow) and
trip (red) indication LEDs
> mode selected).
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1MRS755769
A051476_2