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4 Schutzmodule
4.4.1 Auslösekennlinien
Stator temperature
measured directly
Stator winding
temperature
(trip) function
is set point
Underload
trip level
60% full-load
amperes
Motor running
with load
Underload run
delay: 5 Sec.
with load
Underload
start delay
20 Sec.
J am trip level
180% full-load
amperes
J am start delay
15 Sec.
Motor starting current
(locked rotor condition)
6.1 times
full-load amperes
Abb. 69:
Auslösekennlinien (Beispiel 3 – mit RTDs).
246
Vielfache vom Motornennstrom (Ib)
MRMV4
Note: I is a
combination of
positive (I
) and
1
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
MRMV4-3.7-DE-MAN
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