HERON 8896430 Bedienungsanleitung Seite 112

The generator may be connected to a TN-C-S
(TN-C) grid only via an overvoltage protection
that is built into the TN-C-S (TN-C) grid. When
powering TN-C-S (TN-C) grids from the 400 V
power socket, there must be no asymmetrical
load on the phases, otherwise the alternator of
the generator will be damaged. In the event of
damages resulting from non-professional con-
nection of the generator, the manufacturer of
the generator bears no responsibility.
INFORMATION ABOUT POWER INPUT
OF ELECTRICAL DEVICES
•
ATTENTION
y The power input specified on the rating label of the
electrical device containing an electric motor is, in the
case of most electrical devices, the expression of the
power of the electric motor, i.e. the load that the electric
motor can handle rather than expressing the power
input during standard method of use of the electrical
device, since the value of the power input increases with
the load placed on the electric motor.
Power electric motors in hand power tools have
a starting ramp up input power, which is greater than
the power input when a standard load is applied to the
electric motor, however, most of the time it does not
reach the power input specified on the rating label of
the electrical device or in exceptional circumstances
exceeds it by up to 30 % of the stated value. When
a standard operating load is applied to hand power
tools, the power input is below the value specified on
the rating label. For illustration, the starting power
inputs and power inputs during standard use of certain
power tools and the minimum required electrical power
outputs of the generators required to power them are
provided in tables 3 and 4.
A typical example of electrical devices that differ from
the above-mentioned are those having a higher peak
current draw, such as compressors with a pressure ves-
sel, high-pressure washers with a higher power input
and likewise this may apply to certain electrical devices
with electrical motors with an older year of manufacture
(see the serial number on the rating label of the electri-
cal device), the powering of which requires the selection
of a generator with an approximately 1 to 2 kW greater
electrical power output than the power input specified
on the rating label of the electrical device (see table 4),
since the more powerful alternator of the generator is
able to cover the peak current surge.
y In the event that a heating electrical device is connected
to the generator and the total power draw approaches
or is equal to the operating electrical power output of
the generator, the specified electrical power output of
the generator may not necessarily be achieved since,
for example, a hot air gun with heat regulation has
extremely rapid fluctuations in power input of up to
300 W per second (this behaviour also occurs when it is
EN
powered from the mains power grid) and the generator
may not necessarily be able to handle such rapid fluctu-
ations in power input in the event that the total drawn
power input approaches or is equal to the operating
power output of the generator, and this is manifested in
its reduced electrical power output. A heat gun without
temperature regulation normally has a stable power
input and this behaviour should not occur with it.
y When selecting a generator based on its electrical
power output, the deciding factor is the power input
value specified on the rating label of the electrical
device, the year of manufacture of the electrical
device and the type of electrical device (compressor
with a pressure vessel, etc.) and the number of inten-
ded electrical devices that are to be powered from
the generator, since the power inputs of the indivi-
dual electrical devices are added up. The deciding
factor for the use of an electrical device with a power
input that is approaching the electrical power output
value of the generator should be the soft start func-
tion on the electrical device, which ensures a slower
ramp up of the electric motor and thereby reduces
the current spike that would otherwise not enable
the given electrical device to be used with the inten-
ded generator with a lower electrical power output.
y Before purchasing a generator or connecting an
electrical device/s to the generator, to get a general
ideal, first use a standard wattmeter (device for mea-
suring electrical power consumption) both during
the start up of the electrical device as well as when
placed under the expected load from the mains
power grid (see table 3 and 4) and if possible, check
the use of this electrical device/s on a sample of the
generator being considered, since a wattmeter may
not necessarily be able to capture the peak current
ramp-up the duration of which is less than a second.
y In table 3, there is a drawn up overview of the power
inputs of angle grinders with a cutting disc diameter
from 115 mm to 230 mm with the use of tools of the
provided specification according to the determined pur-
pose of use of the angle grinders and requirements for
the minimum electrical power output of the generators.
NOTE
y Tables 3 and 4 refer to the digital inverter generators
HERON® 8896216 and HERON® 8896217, which are not
part of our offer. The only reason why they are included
is that the described tests were performed on them
and they cannot be entirely compared to the respe-
ctive available models HERON® 8896218 and HERON®
8896219 for the following reasons. The current mode
HERON® 8896218 (900 W/Max. 1 100 W) is equipped
with better electronics than model HERON® 8896216
and handles loads better at full operating power output
than the original model HERON® 8896216. The current
model 8896219 (1850 W/Max. 2000 W) has, compared
to the previous model HERON® 8896217 (1 600 W/max.
2000 W) a larger operating electrical power output. The
described digital generator models HERON® 8896216
and HERON® 8896217 thus better express the required
minimum electrical power output for the given load.
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