Technical Description - ABB REU 610 Technical Reference Manual

1MRS755972
5.
5.1.
5.1.1.
5.1.1.1.
5.1.1.2.
Voltage Relay
Technical Reference Manual - ANSI Version

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 element
Overvoltage protection, high-set element
Negative phase-sequence overvoltage
protection
Undervoltage protection, low-set element
Undervoltage protection, high-set element
Positive phase-sequence undervoltage
protection
Residual overvoltage protection, low-set
element
Residual overvoltage protection, high-set
element
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.
REU 610
IEC symbol IEEE device
number
U> 59P-1
U>> 59P-2
U > 47
2
U< 27P-1
U<< 27P-2
U < 27D
1
U > 59N-1
0
U >> 59N-2
0
CBFP CBFAIL
86
15