116
EN
1)
The specified nominal voltage 230 V / 400 V may be
in the range of the permitted deviation for the power
distribution grid.
2)
The mentioned operating (nominal) electrical power
output of the generator in the technical specificati-
ons is type COP.
The operating electrical power output COP is the
power output that the generator is able to provide
continuously, whilst providing a constant electrical
load under operating condition and use of the gene-
rator as specified by the manufacturer (including
adherence to the maintenance plan and procedures).
The specified max. power output serves for very
short coverage of a higher current draw by a connec-
ted electrical device above the value of the continu-
ous (long-term) operating power output, e.g. during
the ramp up of an electric motor. Thus, the generator
can only be continuously loaded at the value of the
operating (nominal) power output.
•
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 speci-
fied 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 ope-
rating 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 requi-
red 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 vessel, 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 electrical 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 speci-
fied 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 the operating electrical power
output of the generator, the specified electrical
power output of the generator may not necessa-
rily be achieved since in the case of connection
of, for example, a hot air gun with heat regulati-
on a change in the input to the heat gun of up to
300 W per second may occur (this behaviour also
occurs when it is powered from the mains power
grid) and the generator may not necessarily be
able to handle such rapid fluctuations in power
input in the event that the total drawn power
input approaches the operating power output of
the generator, and this is manifested in its redu-
ced electrical operating 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 devi-
ce (compressor with a pressure vessel, etc.) and
the number of intended electrical devices that
are to be powered from the generator, since the
power inputs of the individual 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 function 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 intended
generator with a lower electrical power output.
y
Before purchasing a generator or connecting an
electrical device/s to the generator, to get a gene-
ral ideal, first use a standard wattmeter (device
for measuring 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 con-
sidered, since a wattmeter may not necessarily
be able to capture the peak current ramp-up the
duration of which is less than a second.
•
ATTENTION:
y
In the case of three-phase generator
models HERON® 8896412 / HERON® 8896414
and HERON® 8896418 / HERON® 8896420 the
400 V power socket and the 230 V power socket
(sockets) must not be used at the same time since
this would result in asymmetrical loading of the
phases and would lead to the damage of the
generator's alternator.
