Pytes V Series User Manual page 12

5.3.2 Connect Ground cable
Loosen the screw on the grounding position of the front panel of the battery and attach the lug of the
ground cable over the screw. Use a screwdriver to tighten the screw and connect the other end of the
ground cable to a reliable grounding point.
External Bi-polar over current protection devices and Bi-polar external isolator shall be equipped.
The diameter of the ground cable must be ≥ 6mm2 / 12kcmilExternal Bi-polar over current protection
devices and Bi-polar external isolator shall be equipped.
The minimum diameter must be >=6mm2.
Note: The grounding resistance should be less than 0.1Ω.
5.3.3 Connecting the power cable
Before connecting the power cable, connect and disconnect the cable to identify the positive and
negative terminals, then make a mark respectively. After the cable is connected, measure whether there
is short-circuit or reverse connection.
Select the correct cable based on your loads by referencing to the table below：
AWG
(kcmil)
4/0 211.48
3/0 167.67
2/0 133
1/0 105.5
1 83.65
2 66.31
3 52.6
4 41.7
Please select suitable power cable according to maximum current that may pass through the circuit. If
you need advice, please contact your installer for help.
Connecting the power cables:
1)Power cable connection instructions of Single-Rack:
Single battery:
Connect the positive and negative terminals of the battery to the battery port of the energy storage
inverter with power cables.
Multiple batteries (Max number 14):
The connection of multiple batteries is only permitted in parallel. Firstly, connect the positive and
negative terminals of the batteries in parallel with the supplied flexible busbar (for up to three batteries,
no additional accessories are required). Next connect the positive and negative terminals of the battery
port of energy storage inverter to one of the batteries with power cables. But due to limitations in battery
communication and power cables, a maximum of 14 batteries can be connected in parallel, and a
busbar or junction box should be used for convergence.
Regardless of the number of batteries in parallel, the standard charging and discharging current for a
single battery remains the same, please refer to "Table 1-1". The capacity can be increased by
connecting the batteries in parallel, but due to the limitations of BMS and power cable, a maximum of 14
batteries can be connected in parallel and a busbar or junction box should be used for confluence.
Warning: Connecting batteries in series is forbidden, as it can create a high voltage that poses a hazardous shock risk.
Area
(mm²)
107.22
85.01
67.43
53.49
42.41
33.62
26.67
21.15
Standard Current
（A）
423.2
335.5
266.2
211.1
167.4
132.7
105.2
83.5
12
Max. Current
（A）
482.6
382.6
303.6
240.7
190.9
161.3
120.0
95.2