HNC Electric HBU Series, Руководство пользователя

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HBU Series Braking Unit
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for load type are followed:
Elevator Kc=10-15%
Oil extraction machine Kc=10-20%
Uncoil and coil Kc=50-60%
Centrifugal machine Kc=5-20%
Crane drop more than 100 meters Kc=20-40%
Accidental braking Kc=5%
Other Kc=10%
(2)Confirm system’s average braking current Iav, which
approx. calculate out via below formulation:
Iav
＝
Kc×Imax
5.2.3 Experimental Recommendation
Normal braking time is less than 15s, refer to peak current
(exclude frequently braking), refer to rated current if it is more
than 15s.
5.2.4 Choose model for brake unit according to Imax & Iav.
After getting Iav & Imax, just make sure both rated
current and peak current of selected brake unit are no less than
calculated Iav & Imax.
Final evidence to judge model selection f is current
passing through brake unit is less than maximum current under
any condition to avoid brake unit got damaged because of
over-current. Meanwhile under any condition temperature of
brake unit should be no more than 70
℃
to avoid braking unit
got damaged because of over-heat.