The name of the interpretation

1,the three-phase alternating current (ac):consists of three same frequency,equal mini electric motor potential amplitude,phase difference and difference of 120 ° Angle of power system composed of ac circuits,called three-phase alternating current.2,an equipment:is directly related to production of electric energy and electric power transmission and distribution equipment is called a device.Including all kinds of high voltage circuit breaker,isolating switch,bus,power cable,voltage transformer,current transformer,reactor,lightning arrester,the arc suppression coil,shunt capacitors and hv fuse,etc.3,secondary device:a device for monitoring,measurement,control www.dongfeng-motor.com and protection of the auxiliary equipment.Such as all kinds of relays,signal device,measuring instruments,wave record recording device and remote sensing,remote communication device and a variety of control cable,small bus,etc.

4,high voltage circuit breaker:also called high voltage switch,it can not only cut off or close the no-load current and load current in high voltage circuit,and when a system failure occurs,through the role of relay protection device,to cut off the load current and short circuit current.It is quite perfect arcing structures and sufficient flow ability.5,load switch,load switch structure and the secret of isolating switch are similar,just with a simple arc extinguishing device.It also has an obvious disconnect point,have certain ability to block,can take the load electric motors price operation,but no direct disconnect short-circuit current,if necessary,to rely on concatenated high- voltage fuse to achieve with it.6,air circuit breaker (automatic switch):is to use manual or electric switch,with a lock to keep closing position,the tripping mechanism on the trip with arc extinguishing

device of low voltage switch,is widely used in under 500 v ac,dc device,when in the circuit overload,short circuit,voltage reduced or disappeared,can automatically cut off the circuit.

7,cable:the conductor (conductive section),plus insulation layer and protective layer of three parts of wire is 5kw permanent magnet generator called a cable.8,bus,electric bus is the access of the collection and distribution of electric power equipment,it determines the number of distribution equipment equipment,and in what way to connect the generator,transformer and circuit,and how to connect to the system to complete the transmission and distribution tasks.9,current transformer,also called instrument with converter,is a large current into a small current instruments.10,transformer:a static electrical equipment,is used to turn a numerical ac voltage into the same frequency of one or more of the following numerical different ac voltage of the device.