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

1MRS755537
5.
5.1.
5.1.1.
5.1.1.1.
5.1.1.2.
Motor Protection 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
Three-phase thermal overload
protection
Motor start-up supervision
based on thermal stress
calculation
Three-phase definite-time
overcurrent protection, low-
set element
Three-phase instantaneous or
definite-time short circuit
protection, high-set element
Inverse-time unbalance
protection based on negative-
phase-sequence current
Phase reversal protection
Definite-time undercurrent
(loss of load) protection
Instantaneous or definite-time
ground-fault protection
Cumulative start-up time
counter and restart disable
function
Circuit-breaker failure
protection
Temperature protection using
RTD sensors or thermistors
Lockout relay
For protection function descriptions, refer to Section 5.1.4.13. Technical data on
protection functions.

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 ground-fault current.
IEC symbol
θ>
2
I t
s s
I >
s
I>>
I >
2
REV
I<
I >
0
∑t
si
CBFP
ThA>, ThB>
REM 610 REM 610
IEEE Device No.
49M
48/14
51/14
50/51
46
46R
37
50N/51N
66
62BF
49/38
86
19