Technical Description; Functional Description; Product Functions; Protection Functions - ABB REU 610 Technical Reference Manual

1MRS755769
5.
5.1.
5.1.1.
5.1.1.1.
5.1.1.2.
Voltage Relay
Technical Reference Manual

Technical description

Functional description

Product functions

Protection functions

Table 5.1.1.1.-1 IEC symbols and IEEE device numbers
Function description
Overvoltage protection, low-set stage
Overvoltage protection, high-set stage
Negative phase-sequence overvoltage protection U
Undervoltage protection, low-set stage
Undervoltage protection, high-set stage
Positive phase-sequence undervoltage protection U
Residual overvoltage protection, low-set stage
Residual overvoltage protection, high-set stage
Circuit-breaker failure protection
Lockout relay
For protection function descriptions, refer to Section 5.1.4. Protection.

Inputs

The relay is provided with four energizing inputs, two digital inputs and three
optional digital inputs controlled by an external voltage. Three of the energizing
inputs are for the phase-to-phase voltages and one for the residual voltage.
The relay is mainly designed to measure phase-to-phase voltages, but it
can be used for measuring phase-to-earth voltages as well. However,
the relay does not convert the voltage from phase-to-earth voltage to
phase-to-phase voltage.
The functions of the digital inputs are determined with the SGB switches. For
details, refer to Section 5.2.1. Input/output connections and Table 5.1.4.7.-7,
Table 5.2.1.-1 and Table 5.2.1.-5.
IEC symbol IEEE device
number
U> 59P-1
U>> 59P-2
> 47
2
U< 27P-1
U<< 27P-2
< 27D
1
U > 59N-1
0
U >> 59N-2
0
CBFP CBFAIL
86
REU 610
17