KEHUA TECH SPI-B2S Series, Руководство пользователя

Страница: 30 / 63

3Installation Guide
PV Grid-Connected Inverter SPI-B2
S
Series
(1500-6000) User Manual
22
All rights reserved ©Xiamen Kehua Digital Energy Tech
Co.,Ltd
3.5.3 DC Input (PV) Connection
When installation, it must use the equipped DC terminals to avoid inverter damage.
It is recommended to use independent breaker for each PV input, and before connecting, the
breakers must be off. We suggest to use the special DC breaker (rated voltage is 600V, rated current
is more than 20A).
Switch off the DC Isolator and external DC breakers before connecting the PV array.
Ensure that the connection between PV array and the inverter at positive pole and negative pole is
correctly.
The DC input voltage should be less than the max. input voltage of the inverter.
It's forbidden to connect the grounding wire with positive pole or negative pole of PV array, or it
will lead to inverter damage.
Use the equipped PV connector and metal terminal to connect the PV input. The PV connecter includes
positive connecter and negative connector, they match the corresponding positive metal terminal and
negative terminal, corresponding procedure as follows.
Step 1 Strip the insulation layer of positive wire and negative wire for about 7mm, as shown in Figure3-16.
Figure3-16
Stripping diagram of DC input (unit: mm)
It is recommended to use red wire as the positive wire, use black wire as negative wire to avoid wrong
connection. If using the wires of other colour, please confirm the corresponding connection relationship.
Step 2 Unscrew the lock nut of positive and negative connection, lead the positive and negative wires go
through corresponding lock nut, and then insert the positive wire and negative wire into the positive
metal terminal and negative metal terminal respectively. Crimp the metal terminals firmly by crimping
pliers, as shown in Figure3-17.