Figure 3.4-3 Rack earth(Ground wire locked by M5)
4 Electrical Connection
◇
High voltages in power conversion circuits. Lethal hazard of electric shock or serious burns.
◇
All work on the PV modules, inverters, and battery systems must be carried out by qualified
personnel only.
◇
Wear rubber gloves and protective clothing (protective glasses and boots) when working on
high voltage/high current systems such as INVERTER and battery systems.
4.1 PV Connection
Before connecting PV panels/strings , please make sure requirements are followed as below:
(1)The total short-circuit current of PV string must not exceed inverter's max DC current.
(2)The minimum isolation resistance to ground of the PV string must exceed 19.33kΩ in case
of any shock hazard.
(3)PV string could not connect to earth/grounding conductor.
(4) Use the right PV plugs in the accessory box.
Step 1.
Prepare PV positive and negative power cables
Figure 4.1-1 pv cables and pv plugs
Step 2.
Connect PV cables to PV connectors.See Figure 4.1-2.
Figure 4.1-2 PV cables to PV connectors
·
PV cables must be tightly crimped into the connectors.
·
For Amphenol connector, the limit buckle cannot be pressed.
·
There will be a “click”sound if connectors are inserted correctly into PV plugs.
Step 3.
Screw the cap on and plug it onto inverter side.There will be a click sound if connectors are
inserted correctly into PV plugs.See Figure 4.1-3.
Figure 4.1-3 The PV plug is connected to the inverter
09
10
Screw locking torque 2N. m
Wire Size
Cable(mm)
12AWG
7
