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IDMT Tripping Characteristics per ANSI
I/Iref
t/s
k=0.05
k=0.1
k=1
k=10
0.01
0.1
1
10
100
1000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
I/Iref
t/s
k=0.05
k=0.1
k=1
k=10
0.01
0.1
1
10
100
1000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
I/Iref
t/s
k=0.05
k=0.1
k=1
k=10
Characteristic 8: ANSI, Normally Inverse
0.01
0.1
1
10
100
1000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Characteristic 9: ANSI, Short Time Inverse
Characteristic 10: ANSI, Long Time Inverse
Fig. 3-101: Tripping characteristics as per ANSI.
IDMT Tripping Characteristics, RI-Type Inverse and RXIDG-Type Inverse
Characteristic 11: RI-Type Inverse
0.01
0.1
1
10
100
1000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
I/Iref
t/s
k=0.05
k=0.1
k=1
k=10
0.01
0.1
1
10
100
1000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
I/Iref
t/s
k=0.05
k=0.1
k=1
k=10
Characteristic 12: RXIDG-Type Inverse
Fig. 3-102: RI-type inverse and RXIDG
‑
type inverse tripping characteristics.
3.23.3
Phase Current Stage
The three phase currents are monitored by the P631 to detect when they exceed
the set thresholds. Alternatively, two different thresholds can be active. The
“dynamic” threshold is active for the set hold time of the “dynamic parameters”
(see
); the “normal” threshold is active when no hold
P631
3 Operation
3-136
P631/EN M/R-11-C // P631-310-650
Содержание P631
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Страница 16: ...P631 Table of Contents 8 P631 EN M R 11 C P631 310 650...
Страница 56: ...P631 2 Technical Data 2 28 P631 EN M R 11 C P631 310 650...
Страница 236: ...P631 3 Operation 3 180 P631 EN M R 11 C P631 310 650...
Страница 246: ...P631 4 Design 4 10 P631 EN M R 11 C P631 310 650...
Страница 266: ...P631 5 Installation and Connection 5 20 P631 EN M R 11 C P631 310 650...
Страница 276: ...6 8 Configurable Function Keys P631 6 Local Control HMI 6 10 P631 EN M R 11 C P631 310 650...
Страница 548: ...P631 10 Commissioning 10 10 P631 EN M R 11 C P631 310 650...
Страница 568: ...P631 12 Maintenance 12 8 P631 EN M R 11 C P631 310 650...
Страница 570: ...P631 13 Storage 13 2 P631 EN M R 11 C P631 310 650...
Страница 572: ...P631 14 Accessories and Spare Parts 14 2 P631 EN M R 11 C P631 310 650...
Страница 576: ...P631 15 Order Information 15 4 P631 EN M R 11 C P631 310 650...
Страница 582: ...P631 A2 Internal Signals A2 4 P631 EN M R 11 C P631 310 650...
Страница 608: ...P631 A4 Telecontrol Interfaces A4 18 P631 EN M R 11 C P631 310 650...
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