contactors is the control of electrical motors as a prime mover the 3-phase ac motor ... in particular the squirrel-cage motor dominates the field and most of them ... stop reverse plug jog and sequence motors and in conjunction with overload relays ... to protect motors in the event of overloads the load rating ... stated in hp is the basic data required to enable ... frequency and total life required all influence the overall stress on contactors the ... durability tests of contactors outlined in appendix b of iec 60 947-4 are used by ... to establish contactor ratings which incorporate a sufficient and verifiable normal ... switching duty ac-3 for squirrel-cage motors operating characteristics typical ... broad range of applications as defined in the iec utilization categories e.g ac-3 ...
08/058 pkz 2 motor protectors selection guidelines manual ... motor protectors motor protector combinations s-pkz2 high- ... 05 0.81 0.1 0.2 se1a pkz2 squirrel-cage motors operating starting characteristics ... speed typical applications compressors elevators mixers pumps escalators agitators fans ... conveyors centrifuges valves bucket escalators air-conditioning drives in ... machines electrical starting up to 6 x motor rated current characteristics stopping ... 1 x motor rated current utilization category 100 ... ac-3 rated output of three-phase motors 50 60 hz extreme switching duty ac-4/ ... extreme switching duty squirrel-cage motors operating inching plugging reversing ... -drawing machines centrifuges special drives for manufacturing and processing ...