21. Functions, codes and symbols
Table 37. Functions included in REM610
Functionality
IEC 60617
IEC-ANSI
Protection
Three-phase thermal overload for motors
θ
>
49M
Motor startup based on thermal stress calculation
I
s
2
x t
s
48/14
Three-phase definite-time overcurrent, low-set
stage
I
s
>
51/14
Three-phase overcurrent, high-set stage
I>>
50/51
Inverse-time unbalance protection based on
negative phase-sequence current
I
2
>
46
Phase reversal protection
REV
46R
Undercurrent (loss-of-load)
I<
37
Non-directional earth fault, low-set stage
I
0
>
51N
Cumulative startup time counter and restart inhibit
function
Σ
tsi
66
Circuit-breaker failure
CBFP
62BF
Temperature protection using RTD sensors or
thermistors
ThA>, ThB>
49/38
Lockout relay function
86
Condition monitoring
Trip circuit supervision
TCS
TCS
Restart inhibit function
RESTART INHIBIT
RESTART
DISABLE
Measurement
Disturbance recorder
Residual current
I
0
I
n
Three-phase current
L
1
, L
2
, L
3
I
a
, I
b
, I
c
Thermal level
θ
TH LEVEL
Negative phase-sequence current
I
2
I
2
Temperature measurements via RTD inputs
RTD1, RTD2,
RTD3, RTD4,
RTD5, RTD6
RTD1, RTD2,
RTD3, RTD4,
RTD5, RTD6
Motor Protection
1MRS756304 C
REM610
Product version: C
Issued: 30.10.2009
32
ABB
Summary of Contents for REM 610
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