JEW1 air circuit breaker

Application JEW1(DW45) series air circuit breaker(hereinafter referred to as breaker)is suitable for the circuit of AC 50Hz with rated voltage 400V,690V and rated current up to 6300A.It is mainly used to distribute electric energy and protect circuits and power-supply equipment from overload,under-voltage,short-circuit and single-phase earthing.with intelligentized and selective protection functions,the breaker can improve the reliability of power supply,and avoid unnecessary power failure. The breaker is applicable for power stations,factories,mines(for 690V) and modern high-buildings,especially for the distribution system of intelligentized building. This breaker conforms to IEC60947-2 and GB14048.2.The whole series have past CCC certification and CB certification of SEMKO. Product model and its meaning Environmental Temperature condition:-5 +40 ;the average value within 24h shall not exceed +35(Speial situation excluded )Elevation Altnmosphere condition Relative humidity at +40. shall not exceed 50%.higher hum-idity is permissible at lower temperature condition. when the highest monthly average relative humidity is 90% in the humiddext month, the lowest monthly average temperature of this month is +25.And consider the influence of dew on product surface due to temperature changes.pollution grade:grade The breaker should be installed caccording to the requirements on the instruction manual.The vertical inclination degree shall not exceed 5 Drawer type breaker and fixed type breaker Installation and usage Installation Unload the breaker from the soleplate of package-box. if it is drawer type,firstly pull out the handle from under the drawer-base of breaker,and plug it into the hole on central section of plastic cover under the drawer-base crossbeam,anticlockwise turns the handle,breaker body will slowly slide along the outside of drawer-base. When the guide-rod points to separated position and handle can’t be rotated any longer,pull out the handle and firmly grasp the aluminum handle on drawer-base,pull out the breaker body and remove ift form drawer-base Check the insulation resistance with a 500V megger,resistance should not be less than 20MQ when ambient temperature is 205and relative humidity is 50%- 70%.otherwise have it drying. Put the breaker(fixed-type) or drawer-base(drawertype) onto the installation- bracket,and make it fixed,directly connect the bus wire of main circuit to the bus wire of fixed-type circuit breaker,alternatively put breaker body onto the guild rail of drawer-base.Plug the place,then connect the bus wire of main circuit to bus wire of drawer-base. wiring the secondary circuit according to electric principle diagram. Note: something like bolts,nuts.gaskets shouldn’t be left inside the drawer-base to avoid being blocked. Usage and operation Check the rated voltage of the following components whetherconforms to the power voltage or not .such as under voltage release,shunt releaseclosing electromagnet,motor-driven mechanism and intelligent controller Maintenance Check the technical index on time or and some lubricating oil.,etc. This breaker structure is arranged vertically and modularized composition with each function=cell separated,which make the maintenance easy.it has compact structure,reliable operation and strong free maintenance capability. P lease check the technical parameters on the nameplate accordance with the reauirements of order before installation Product model and its meaning Fixed type structure explosion Drawer type structure explosion Main teachnical parameter: Overal&Installation dimensions JEW1-2000 Drawer-type