Precautions of Inverter Distribution

Precautions of Inverter Distribution 
Notes
(1). Before wiring, make sure the power has been cut off more than 10 minutes. Otherwise it has danger of electric shock. 
(2) It is prohibited to connect the power line with output terminals U, V, W of the inverter. 
(3) Inverter has leakage current in itself. To ensure safety, the inverter and motor must be earthed safely. Earthing wire uses copper wire with wire diameter of .more than 3.5mm2 generally.  Earthing resistance shall be less than 10Ω.
(4) Inverter has passed withstand voltage test before delivery.  User may not take withstand voltage test for the inverter. 
(5) Absorption of electromagnetic contactor and capacitor or other RC absorbing device cannot be added between the inverter and motor. 
(6) To provide input over-current protection and convenience of outage maintenance, inverter shall be connected with the power via intermediate circuit breaker. 
(7) The wiring of relay input and output circuit (X1-X8, Y1, Y2, Dol) shall select stranded wire or shielded wires more than 0.75mm2. The shielding layer end shall be suspended and the other end shall be connected with COM terminal of inverter, and wiring length shall be less than 50m. 
Danger 
(1) Distribution operation can only be taken after making sure the inverter power has been cut off completely, all LED indicators of operation keyboard have been off and waiting for more than 10 minutes. 
(2) Internal distribution work can only be started after making sure DC value between terminal P+ and P- of inverter’s main circuit. Is reduced to below DC 36V.
(3) Distribution operation can only be taken by trained and authorized professional personnel. 
(4) Before powering on, pay attention to check whether voltage class is consistent with the power supply voltage. Otherwise, it may cause personal injury and equipment damage.