Technical Data On Protection Functions - ABB REF 610 Technical Reference Manual

REF 610 REF 610
5.1.4.11.
66
Feeder Protection Relay
Technical Reference Manual
Setting Switch Function
4
5
Σ
a)
The prerequisite is that the battery has been inserted and is charged.
When all switches are set to zero, the battery supervision is disabled.

Technical data on protection functions

Table 5.1.4.11.-1 Stages I>, I>> and I>>>
Feature
Set start value, I>, I>> and
I>>>
at definite-time
*
characteristic
at IDMT characteristic
*
Start time, typical
Time/current characteristic
definite-time
*
operate time, t>, t>> and
t>>>
* IDMT according to IEC
60255-3
time multiplier, k
Special type of IDMT
*
characteristic
time multiplier, k
IDMT according to
*
IEEE C37.112
time dial, n
Resetting time, maximum 50 ms
Retardation time, typical
Set resetting time, t
r>
Drop-off/pick-up ratio,
typical
Operate time accuracy
1 = recorded data and information on the
*
number of starts of the protection stages
a)
are retained
1 = the real-time clock is running also
*
during loss of auxiliary voltage
Stage I> Stage I>>
0.30...5.00 x I 0.50...35.0 x I
n
a)
0.30...2.50 x I
n
55 ms 30 ms
0.05...300 s 0.04...300 s
Extremely inverse
Very inverse
Normal inverse
Long-time inverse
0.05...1.00
RI-type inverse
RD-type inverse
(RXIDG)
0.05...1.00
Extremely inverse
Very inverse
Inverse
1...15
b)
50 ms
30 ms 30 ms
0.05...2.50 s
0.96 0.96
1MRS755310
Default setting
1
1
a)
31
Stage I>>>
0.50...35.0 x I
n n
30 ms
0.04...300 s
50 ms
30 ms
0.96