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Heat Shrink Tubing
3.6.3 System grounding
Connect the inverter to the grounding bar through the protective grounding wire to protect
grounding protection.
Specifications of cable and terminal:
Grounding wire: the recommended cross sectional area=6mm
2
(10AWG) outdoor
copper core cable
Ring terminal: M4
CAUTION
Good grounding can resist the surge voltage surge and improve EMI
performance. Before connection of AC, DC and communication cables,
the grounding wire should be connected first.
It is recommended that the inverter should be grounded locally. For
multiple PWS2-30M-EX parallel connection system, the grounding
points of all inverters should be connected with each other so as to
ensure equal potential connection of grounding wires.
Step 1: Use a wire stripper to strip the insulating layer of the grounding wire in a proper
length;
Step 2: Penetrate the wire core whose insulating layer is stripped into the conductor
crimping area of ring terminal. Press the ring terminal with a hydraulic clamp.
Step 3: Cover the terminal on the grounding bolt and screw up the nut.
Fig. 3-5 Wiring stripping
3.6.4 DC wiring
Specifications of cable and terminal:
Grounding wire: the recommended cross-sectional area=25mm
2
(3AWG) outdoor
copper core cable
Ring terminal: M8
Step 1: Use a multi-meter to measure the voltage of battery and ensure that the voltage is
within input voltage range of energy storage inverter.
Step 2: Turn off the DC breaker. Wiring operation can be conducted after using a multi-
meter to measure and confirm that there is no voltage between positive and negative poles
of DC input.
Step 3: Use a wire stripper to strip the DC cable in a proper length, cover a cord end
terminal and use wire crimpers to compress it. Recommended DC cable 25mm
2
(AWG 3)
with copper cord.
