Wire and cable, electrical should know some common sense

Must pay attention to the connection 3 phase induction motor is correct and reliable, and the secondary side are not allowed to answer the fuse or switch. Even if for some reason to dismantle the secondary side of the instrument or other devices, also must first to secondary side short circuit, then on again. Low voltage switch is lamination machine refers to under 1 kv isolating switch, circuit breaker, fuse and so on low voltage power distribution equipment controlled by load, must branch out, it is forbidden to more than a brake control and confusion. Low voltage rotor power distribution equipment and interlock of self-provided generator which should be reliable. It is strictly prohibited to bring their own power equipment and power grid parallel operation without permission. Low voltage power distribution equipment around before and after the operation and maintenance of channels should be laid on the insulation pad, piled up other items are strictly prohibited in the channel at the same time. Welding equipment: equipment first, followed by power supply. Dismantle rotor and stator devices: power supply, before equipment. 

Zero circuit: the first, followed by the line of fire. Down the line: after the first wire, scattered line. Low voltage fuse cannot as the motor overload protection. Fuse rated squirrel cage induction motor voltage must be greater than or equal www.facebook.com/dongfeng.motor to the working voltage of power distribution lines. Rated current of the fuse must be greater than rotor or equal to the rated current of the melt. Fuse breaking capacity must be greater than the possible maximum short-circuit current distribution circuit. Melt the selection of rated current, must meet the line normal working current and the starting current of the motor. For electric and lighting load short circuit protection, the rated lamination machine current of the melt is equal to or slightly greater electric generator than the rated current of the load. For single motor, melt rated current (1.5 2.5) or the motor rated permanent magnet generator current melt rated current in the power distribution system, and at a lower level shall coordinate, in order to realize the selective protection purposes. The next level should be smaller than at the next higher level. Ceramic plug fuse should be installed vertically, qualified fuse, must be used in other copper wire, etc. Replace the fuse. Spiral can fuse power into the line on the ac motors center of the base terminal, they can pick up the load for the shell of the screw terminals.