Technical Description; Product Functions; Protection Functions; Iec Symbols And Ieee Device Numbers - ABB REF610 Technical Reference Manual

1MRS755535
5.
5.1.
5.1.1.
5.1.1.1.
5.1.1.2.
Feeder Protection Relay
Technical Reference Manual - ANSI Version

Technical description

Functional description

Product functions

Protection functions

The protection functions of REF610 with their IEC symbols and IEEE device
numbers are presented in the table below:
Table 5.1.1.1.-1

IEC symbols and IEEE device numbers

Function description
Three-phase non-directional
overcurrent protection, low-
set element
Three-phase non-directional
overcurrent protection, high-
set element
Three-phase non-directional
overcurrent protection,
instantaneous element
Phase discontinuity protection ΔI>
Three-phase thermal overload
protection for cables
Non-directional ground-fault
protection, low-set element
Non-directional ground-fault
protection, high-set element
Arc protection
Circuit-breaker failure
protection
Automatic reclosing
Lockout relay
For descriptions of the protection functions, refer to Section 5.1.4.11. Technical data
on protection functions.

Inputs

The relay is provided with four energizing inputs, two optional light sensor inputs,
two digital inputs and three optional digital inputs controlled by an external voltage.
Three of the energizing inputs are for the phase currents and one for the ground-fault
current.
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 5.1.4.10.-7,
Table 5.2.1.-1 and Table 5.2.1.-5.
IEC symbol
I>
I>>
I>>>
θ>
I >
0
I >>
0
ARC
CBFP
0→1
REF610 REF610
IEEE Device No.
51P
50P-1
50P-2
46
49
51N
50N
ARC
CBFAIL
79
86
21