18
Installation
Install
ation
2
PV array connections
You can connect up to two PV arrays directly to the MC4 connectors on this product.
WARNING
Make sure the AC circuit breaker, PV switch and DC circuit breaker of the battery are disconnected before
starting electrical cable connections.
CAUTION
y
Before connecting PV array, make sure that the open circuit voltage of PV array is less than 800 V.
Otherwise this product could be damaged.
y
Do not connect a ground to a PV+ or PV- connector. It may cause electric shock or the product may
permanently be damaged.
NOTE
y
PV modules shall have an IEC61730 Application Class A rating or equivalent.
y
For DC cables of PV connections, it is recommended to use the cross-sectional area of lead wire between
2.5mm
2
and 6 mm
2
.
y
Use MC4 branch connector if you want to use both PV1 and PV2 connectors together in order to connect
two PV arrays serially.
y
When you connect only one PV array to the PCS, the PV array must be connected to the PV1 (+ and -)
connectors.
y
When you use both PV1 and PV2 connectors, use the PV1 connectors for bigger PV array.
PV1 connection
Connect DC cables of a PV array to PV1 connectors on this product.
PV1+
PV1-
PV array1
PV2 connection
Connect DC cables of a PV array to PV2 connectors on this product.
PV2+
PV2-
PV array2
