Gree GMV-Y120WL/A-T, Руководство пользователя

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Photovoltaic Multi VRF
19
For photovoltaic DC power supply, selection of power cord diameter and air switch are as
below:
Model Power Supply
Capacity of Circuit
Breaker (A)
QTY of Power
Cord*minimum Sectional
Area
（
mm
2
）
GMV-Y120WL/A-T 235-490Vdc 25A 2*4.0
GMV-Y140WL/A-T 235-490Vdc 25A 2*4.0
GMV-Y160WL/A-T 235-490Vdc 25A 2*4.0
Remarks:
(1) The capacity of circuit breaker shall be according to the connection way of GREE
Monocristalline 285Wp PV module installed in the project. In this part, 2 PV module
strings are connected in parallel and each PV module string consist of 11 mudules. If
other PV module is adopted, please refer to the manufacturer for the capacity of DC
circuit breaker.
(2) Circuit breaker and specification of power cord is selected according to maximum
power (maximum current) of unit.
(3) Specification of power cord is selected according to the multi-core copper core cable
(such as YJV copper core cross-linked polyethylene insulated PVC cable) laying in
wire slot under using ambient temperature of 40
℃
and cable working temperature of
90
℃
, if the using conditions are different, please calculate and adjust according to
national standard.
(4) It is compulsory to use copper core cable.
(5) The sectional area of cable is applicable to the maximum distance of 15 meters; if it is
over 15 meters, the sectional area of cable should be accordingly increase for
prevention of overcurrent that causes burnout or fire.
(6) Specification of circuit breaker is calculated on the basis of the ambient working
temperature of 40
℃
, please calculate and adjust according to instruction manual of
circuit breaker.
(7) The circuit breaker should possess magnetic tripping and thermal overload tripping
functions to protect the unit under short-circuit or overloading status.
4.6 Installation project of photovoltaic system
The system construction is as below. The installation of photovoltaic system mainly
includes the installation of photovoltaic support and photovoltaic battery sub-assy, the
lay-out of cable and power device.