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4 Elementos de protección
4.4.1 Curvas de protección de motor
4.4.1
Curvas de protección de motor
Ultimate trip
based on % of
full-load
amperes
(100% shown)
I²T curves
(I is an effective
current including
I1 and kI2.)
Fig. 57:
Curva de protección de motor (ejemplo 1).
226
múltiplos de Ib
MRM4
Maximum allowable
stalll time
(30 sec cold start)
(15 sec cold start)
(10 sec cold start)
(5 sec cold start)
Based upon locked
rotor current of 6.1
times full-load amps
Instantaneous
overcurrent set at
12 times full-load
amperes
Instantaneous
overcurrent start
delay set for
2 cycles
MRM4-3.7-ES-MAN
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