CPS SCH275KTL-DO/US-800, Руководство пользователя

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Electrical Connection
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DC Cable Connection
To ensure the optimum performance of the inverter, please read the following
guidelines before performing any DC connections:
 Confirm the DC configuration and ensure that the maximum open
circuit voltage of the PV modules is lower than 1500VDC under any
conditions;
 Check the polarity before terminating the DC cables of PV strings
according to the following steps, as shown in figure 4-9:
i.
Use a multi-meter to measure the PV strings’ cable ends and
check the polarity.
ii.
The positive (+) terminal of cable should match the positive (+)
terminal of inverter’s DC input.
iii.
The negative (-) terminal of cable should match the negative (-)
terminal of inverter’s DC input.
Figure 4-9 Polarity Check
Perform cable connection as per the following steps:
1.
Remove the liquid-tight hole plugs from the DC input of the wiring box
and install conduit and conduit fittings into the holes. Then route the
cables through the conduit inside the wiring compartment.
2.
Connect the DC cables to the fuse holders of 36 input inverter as
shown in Figure 4-10a; or connect to the DC terminals of 24 input
inverter as shown in Figure 4-10b, and then tighten the screws.
NOTICE!
It is important to use a multi-meter to check the polarity of the DC input
cables to avoid any risk of reverse polarity.
WARNING!
 A reversed string is extremely hazardous and will result in a
blown fuse when the irradiation is high.
 The voltage across the blown fuse will be 2x Voc and could
prevent proper fuse operation resulting in a fire.