69
Setting Switch Function Default setting
4
*
1 = recorded data and information on the
number of pickups of the protection
elements are retained
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 Elements 51P, 50P-1 and 50P-2
Feature Element 51P Element 50P-1 Element 50P-2
Set pickup value, 51P,
50P-1 and 50P-2
*
at definite-time
characteristic
0.30...5.00 x I
n
(CT) 0.50...35.0 x I
n
(CT) 0.50...35.0 x I
n
(CT)
*
at IDMT characteristic 0.30...2.50 x I
n
(CT)
a)
Pickup time, typical 55 ms 30 ms 30 ms
Time/current characteristic
*
definite-time
operate time, 51P TDLY,
50P-1 TDLY and 50P-2
TDLY
0.05...300 s 0.04...300 s 0.04...300 s
*
IDMT (mode) according
to IEC 60255-3
Extremely inverse
Very inverse
Normal inverse
Long-time inverse
time dial, 51P TD IEC 0.05...1.00
*
Special type of IDMT
(mode) characteristic
RI-type inverse
RD-type inverse
(RXIDG)
time dial, 51P TD IEC 0.05...1.00
*
IDMT (mode) according
to IEEE C37.112
Extremely inverse
Very inverse
Inverse
time dial, 51P TD ANSI 1...15
Resetting time, maximum 50 ms
b)
50 ms 50 ms
Retardation time, typical 30 ms 30 ms 30 ms
Set resetting time, 51P
RSET
0.05...2.50 s
Drop-off/pick-up ratio,
typical
0.96 0.96 0.96
Operate time accuracy
Feeder Protection Relay
Technical Reference Manual - ANSI Version
REF610REF610
1MRS755535
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