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Exceeding these values creates resonance between
the reactor and the drive, which reduces the life of the
product.
Fuses
Fuses used for motor protection must be rated for
minimum 500 V. Motors up to and including 10 HP
require class K5 UL-listed fuses. Any UL-listed fuse
can be used for motors of 15 HP.
Short-circuit current
If a short circuit occurs, the motor can be used on
a mains supply delivering not more than 5000 RMS
symmetrical amperes, 600 V maximum.
Branch-circuit protection
When the pump is protected by a circuit breaker, the
circuit breaker must be rated for a minimum voltage
of 500 V. The circuit breaker must be of the inverse-
time type.
Overload protection
Degree of overload protection provided internally by
the drive, in percent of full-load current: 102 %.
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