Protective Elements
Motor Protection Curve (Example 2 - without RTDs)
EN MRM4 01/11
Page 395
Ultimate trip
level: 100%
full-load amperes
Note: I is a
combination of
positive (I
1
) and
negative (I
2
)
sequence
motor currents
Max. allow.
locked-rotor
amperes:
6.1 times full-
load amperes
Stall time:
15 Sec.
Instantaneous
overcurrent:
12 times full-
load amperes
Instantaneous
overcurrent:
start delay set
for 2 cycle
Motor starting current
(locked rotor condition)
6.1 times
full-load amperes
Jam start delay
15 Sec.
Jam trip level
180% full-load
amperes
Underload
start delay
20 Sec.
Motor running
with load
Underload run
delay: 5 Sec.
Underload
trip level
60% full-load
amperes
multiples of Ib
t [
s]
Содержание MRM4
Страница 1: ...MRM4 HighPROTEC Motor Protection Device Manual DOK HB MRM4E...
Страница 3: ...Order Code EN MRM4 01 11 Page 3...
Страница 18: ...Important Definitions Page 18 EN MRM4 01 11 41 SG Prot ON 42 SG ON Cmd SG Prot ON SG ON Cmd...
Страница 115: ...Navigation Operation Navigation Operation EN MRM4 01 11 Page 115 1 2 3 5 7 6 8 10 9...
Страница 162: ...Recorder Name Description I 2 TripCmd Signal Trip Command Page 162 EN MRM4 01 11...