Fig 5.8
Fig 5.9
Electrical connection
6
6.1 Safety
Danger to life from electric shock due to high voltages High voltages
are present in the DC cables and later during operation in the
conductive components of the inverter. These can cause fatal electric
shocks. Before connecting, make sure the AC & DC disconnect is
turned off and measure the voltage within the limits of system.
Electric shock hazard, the DC conductors of this photovoltaic system
are normally ungrounded but will become intermittently grounded
without indication when the inverter measures the PV array
isolation.Becauseisolation. Because of the transformer less design,
the DC positive pole and DC negative pole of PV arrays are not
permitted to be grounded.
Do not disconnect the DC connectors under load!
Risk of burns due to hot surfaces
The surface of the inverter can become very hot. Touching the surface
can result in burns.
Do not touch hot surfaces. During operation, do not touch any parts
other than the lower enclosure lid of the inverter. Mount the inverter
in such a way that it cannot be touched inadvertently.
1. All electrical installations shall be done in accordance with the local
and national electrical codes. Do not remove the casing. Inverter
contains no user serviceable parts. Refer servicing to qualified service
personnel. All wiring and electrical installation should be conducted
by a qualified service personnel.
2. Carefully remove the unit from its packaging and inspect for
external damage. If you find any imperfections, please contact your
local dealer.
3. Be sure that the inverters connect to the ground in order to protect
property and personal safety.
4. The inverter must only be operated with PV generator. Do not
connect any other source of energy to it.
5. Both AC and DC voltage sources are terminated inside the PV
Inverter. Please disconnect these circuits before servicing.
6. This unit is designed to feed power to the public power grid (utility)
only. Do not connect this unit to an AC source or generator.
Connecting Inverter to external devices could result in serious damage
to your equipment.
7. When a photovoltaic panel is exposed to light, it generates a DC
voltage. When connected to this equipment, a photovoltaic panel will
charge the DC link capacitors.
8. Energy stored in this equipment’s DC link capacitors presents a risk
of electric shock. Even after the unit is disconnected from the grid and
photovoltaic panels, high voltages may still exist inside the PV-
Inverter. Do not remove the casing until at least 5 minutes after
disconnecting all power sources.
9. Although designed to meet all safety requirements, some parts and
surfaces of Inverter are still hot during operation. To reduce the risk of
injury, do not touch the heat sink at the back of the PV-Inverter or
nearby surfaces while Inverter is operating.
10. Before any electrical wiring can be connected to the inverter, the
inverter must be permanently mounted.
DANGER
WARNING
DANGER
19
20
40mm
(1.57inch)
4
2
5
m
m
(1
6
.7
3
in
ch
)
104mm
(4.09inch)
2
8
m
m
(1
.1
0
in
ch
)
5
8mm(0.31inch)
