ABB REF 610 - Technical Data on Protection Functions

Setting Switch Function Default setting
4
*
1 = recorded data and information on the
number of starts of the protection stages
are retained
a)
1
5
*
1 = the real-time clock is running also
during loss of auxiliary voltage
a)
1
Σ 31
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.
5.1.4.11. Technical data on protection functions
Table 5.1.4.11.-1 Stages I>, I>> and I>>>
Feature Stage I> Stage I>> Stage I>>>
Set start value, I>, I>> and
I>>>
*
at definite-time
characteristic
0.30...5.00 x I
n
0.50...35.0 x I
n
0.50...35.0 x I
n
*
at IDMT characteristic 0.30...2.50 x I
n
a)
Start time, typical 55 ms 30 ms 30 ms
Time/current characteristic
*
definite-time
operate time, t>, t>> and
t>>>
0.05...300 s 0.04...300 s 0.04...300 s
*
IDMT according to IEC
60255-3
Extremely inverse
Very inverse
Normal inverse
Long-time inverse
time multiplier, k 0.05...1.00
*
Special type of IDMT
characteristic
RI-type inverse
RD-type inverse
(RXIDG)
time multiplier, k 0.05...1.00
*
IDMT according to
IEEE C37.112
Extremely inverse
Very inverse
Inverse
time dial, n 1...15
Resetting time, maximum 50 ms
b)
50 ms 50 ms
Retardation time, typical 30 ms 30 ms 30 ms
Set resetting time, t
r>
0.05...2.50 s
Drop-off/pick-up ratio,
typical
0.96 0.96 0.96
Operate time accuracy
66
REF 610REF 610
Feeder Protection Relay
Technical Reference Manual
1MRS755310