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

REF 610
4.1.4.11.
58
Feeder Protection Relay
Technical Reference Manual - ANSI Version
Technical data on protection functions
Table 4.1.4.11-1 Elements 51P, 50P-1 and 50P-2
Feature
Set pickup value, 51P,
50P-1 and 50P-2
• at definite-time
characteristic
• at IDMT (mode)
characteristic
Pickup time, typical
Time/current characteristic
• definite-time
51P TDLY
operate time,
50P-1 TDLY 50P-2
and
TDLY
• IDMT (mode) according to
IEC 60255-3
51P TD
time multiplier,
IEC
• Special type of IDMT
(mode) characteristic
51P TD
time multiplier,
IEC
• IDMT (mode) according to
IEEE C37.112
51P TD ANSI
time dial,
Resetting time, maximum
Retardation time, typical
Set resetting time, 51P
RSET
Drop-off/pick-up ratio,
typical
Operate time accuracy
• at definite-time
characteristic
• at IDMT (mode)
characteristic according to
IEC 60255-3: accuracy
class index E
• at IDMT (mode)
characteristic according to
IEEE C37.112
• at RI-type characteristic
Element 51P Element 50P-1
0.30...5.00 x 0.50...35.0 x
I (CT)
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
0.05...1.00
Extremely inverse
Very inverse
Moderately inverse
1...15
2) 50 ms
50 ms
30 ms 30 ms
0.05...2.50 s
0.96 0.96
±2% of the set ±2% of the set
operate time or ±25 operate time or ±25
ms ms
5
±7% of the
calculated operate
time
±7% of the
calculated operate
time
1MRS 755535
Element 50P-2
0.50...35.0 x
I (CT) I (CT)
n n
30 ms
0.04...300 s
50 ms
30 ms
0.96
±2% of the set
operate time or ±25
ms