Fronius IG 15, Руководство по эксплуатации

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5
ENEN
The permanent ENS mains monitoring scheme is an additional link in its
safety chain. One of the signs by which ENS identifies abnormal situati-
ons in the mains is a sudden increase of the impedance in the mains
network.
Both the permanent mains monitoring by your FRONIUS IG unit directly
as well as ENS make sure that in case of a mains blackout (due to being
switched off by the utility company or due to a defect in the transmission
line) it stops feeding power into the mains.
This scheme definitely prevents dangerous voltages at the AC lines and
constitutes an essential contribution towards avoiding hazards for the
maintenance staff.
Before connecting the solar modules, you must check whether the voltage
parameters laid down in the manufacturer’s data correspond with reality.
When checking the voltage reading, please take into account that solar
modules supply a higher no-load voltage when temperatures are low and
insolation remains unchanged.
At an outside temperature of -10 degrees centigrade the no-load voltage
of the solar modules must in no case exceed 500 V - or 530 V for the IG
60 HV. The data sheet of the solar module will tell you the temperature
factors applicable for ascertaining the theoretical no-load voltage at -10
degrees centigrade.
In case the solar modules exceed a no-load voltage of 500 V - or 530 V
for the IG 60 HV - the FRONIUS IG unit will be completely damaged and
all warranty rights will cease to exist.
Photovoltaic
generator
Only a licenced electricity installer is authorized to carry out the connec-
tion works to the public mains network. Mains connec-
tion
Monitoring the
electric mains
network
(continued)
Note! If DC plugs are provided, they must never be disconnected
from the sockets of the solar modules as long as the FRONIUS IG
unit is feeding power into the mains. Before disconnecting the DC
plug you must always disconnect in the fuse for the house distribu-
tion.
DC plugs
Note! Disconnect AC plug connections only when the equipment
is not under voltage, after having disconnected the fuse for the in-
house distribution panel.
AC plugs