Crown Micro XAVIER 3KVA - PV Connection; PV Module Selection; PV Module Wire Connection

8
PV Connection
CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter
and PV modules.
WARNING! It's very important for system safety and efficient operation to use appropriate cable for PV
module connection. To reduce risk of injury, please use the proper recommended cable size as below.
Model Wire Size Cable (mm
2
)
Torque value
（
max
）
X-3KVA-M
1 x 8AWG
10
1.2 Nm
PV Module Selection:
When selecting proper PV modules, please be sure to consider below parameters:
1. Open circuit Voltage (Voc) of PV modules not exceeds max. PV array open circuit voltage of inverter.
2. Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.
Max. PV Array Open Circuit Voltage 102Vdc
PV Array MPPT Voltage Range 30~80Vdc
Take 250Wp PV module as an example. After considering above two parameters, the recommended module
configurations are listed as below table.
Maximum Power (Pmax)
250W
3KVA:
2 pieces in serial and 2 sets in parallel.
Max. Power Voltage Vmpp(V)
30.1V
Max. Power Current Impp(A)
8.3A
Open Circuit Voltage Voc(V)
37.7V
Short Circuit Current Isc(A)
8.4A
PV Module Wire Connection
Please follow below steps to implement PV module connection:
1. Remove insulation sleeve 10 mm for positive and negative conductors.
2. Suggest to put bootlace ferrules on the end of positive and negative wires with a
proper crimping tool.
3. Check correct polarity of wire connection from PV modules and PV input
connectors. Then, connect positive pole (+) of connection wire to positive pole
(+) of PV input connector. Connect negative pole (-) of connection wire to
negative pole (-) of PV input connector. Screw two wires tightly in clockwise direction.
Recommended tool: 4mm blade screwdriver