2014年11月26日星期三

The choice of plate with a knife switch



motor lamination three phase induction wound rotor 

Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. silicon steel stamping 

5.stunning performance
1. The choice of the form of structure. According to the role of it in line and its installation position in the three phase induction motor complete sets of power distribution equipment to determine the structure of it. Only used to isolate the diesel engine power supply, simply choose products with Electric motor no arcing cover; Such as used for breaking load, it should be chosen with arcing cover, and it is through the lever to manipulate the product; Such as the central can't handle knife switch to cut off the load current, the other can be cut off in the form of a certain alternator generator load current, but it must be chosen with arcing cover of the knife switch. In addition, still should root tree is positive or side operation, is a direct manipulation or lever auto spare parts transmission, is the connection or the plate in front of the plate to choose structure. HD11, HS11 for magnetic stand, don't cut off the circuit with a load, only for current isolation. HD12, HS12 for positive side in front of the operation in the maintenance of acmotor2.blogspot.com the switchgear cabinet, including arc extinguishing device knife switch can cut off under the rated current of the load circuit. 


115/120 V AC Voltage and Three-phase Phase small 240v electric motor
Specifications
1.Specifications1.3-phase asynchronous motors 
2.IEC standard 
3.OEM 
4.Voltage:50HZ &60HZ;380V&415V 

5.Protection class: IP54 
HD13, HS13 behind for positive operation maintenance of the switchgear cabinet, including arc extinguishing device knife switch can cut off under the rated current of the load circuit. HD14 used in power distribution box, including arc extinguishing device knife switch can be operated on load. 2. The selection of the rated current. Rated current of the knife switch, shut off by general should not be less than the sum of each load rated current in the circuit. If the load is the motor, we ac synchronous generator must consider whether the possible maximum short-circuit peak current in circuit in the level of the rated current of electric stability under the peak current (when short circuit accident, if the knife switch can pass with a maximum short-circuit current, is not produced because of its huge electric effect and produce the deformation, damage or touch the knife automatically pop up phenomenon, diesel engine is a short-circuit current peak is magnetic generator the knife switch electric stability of peak current). If you have more than, you should choose rated current a greater level of knife switch.

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