6
VOLTAGE TRANSFORMER
KH 3906
VOLTAGE TRANSFORMER
Operating instructions
KOMPERNASS GMBH · BURGSTRASSE 21 · D-44867 BOCHUM
www.kompernass.com
ID-Nr.: KH3906-10/09-V2
KH 3906
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CONTENT PAGE
Correct Usage 2
Safety information 2
Technical data 3
Operating Elements 4
Initial operation 4
Operational information 4
Connection and operation of a load/device 5
Device operation information 5
Low battery signal 6
Handling general failures 6
Troubleshooting 6
Cleaning 7
Disposal 7
Importer 7
Warranty & Service 8
Read the operating instructions carefully before using the device for the first time and preserve this booklet
for future reference. Pass this booklet on to whoever might acquire the device at a later date.
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VOLTAGE
TRANSFORMER KH 3906
Correct Usage
The device is intended for connection to a 12 V in
vehicle receptacle and for 220 - 240 V AC output
for connection of electrical devices with a power
consumption up to 150 W.
The device is not intended for commercial or industrial
purposes.
No guarantee claims will be granted for damage
resulting from improper use!
Devices recommended for
use with the power inverter*
Notebooks and computer,
radios, radio devices, CD/MP3
player, mobile telephone
Portable cooler boxes, lights Microwave ovens, coffee
Electric razors Hair dryer
Typical low voltage devices Typical motor driven devices,
* Pay attention to the information regarding
current usage and power consumption on
the rating plate of the device you intend to
operate.
Before operation make sure that the maximum
power consumption does not exceed 0,65
A and the maximum continuous load is not
more than 150 W.
Attention!
Sensitive electronic devices should not be operated with the power inverter since the output voltage is not sufficiently constant for these devices.
Devices not recommended for use with the
power inverter*
Amplifier, drilling machines,
compressors
machines, hand mixers,
clothes irons
heating devices, electric
work tools
Safety information
• This device is not intended for use by individuals
(including children) with restricted physical,
physiological or intellectual abilities or who are
lacking in experience and/or knowledge unless
they are supervised by a person responsible for
their safety or receive from this person instruction
in how the device is to be used. Children should
be supervised to ensure that they do not play
with the device.
• To avoid danger remove the power inverter from
the 12 V in vehicle receptacle after every use
and before each cleaning.
• Check the device and all parts for visible damage.
The safety concept of the device can only function when it is in faultless condition.
• The power inverter must always be easily accessible
so that, in case of emergency, it can be quickly
disconnected from the power supply system.
Risk of electrical shocks.
• Connect the power inverter only to a 12 V in
vehicle receptacle. Connecting the device to a
24 V supply could damage it.
• When connecting the power inverter make sure
that the polarity of the vehicle plug matches the
polarity of the 12 V in vehicle receptacle. The
socket must have an internal positive pole, that is
to say that the positive pole of a vehicle battery
cannot be connected to the chassis of the vehicle.
• You may not open the device casing or repair
the device yourself. Should you do so, the safety
of the device may be compromised and the
warranty becomes void.
• NEVER submerse the device in water.
Wipe it only with a slightly damp cloth.
This device suitable only for use indoors.
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Risk of fire!
• Do not use the device near hot surfaces.
• Do not locate the device in places exposed to
direct sunlight, Otherwise, it may overheat and
become irreparably damaged. Do not operate
the device in a vehicle that is standing out in the sun.
• Do not leave the device unattended when in use.
• Do not cover the fan's ventilation slots when the
device is switched on.
• Do not place any open sources of fire, like candles,
on the device.
• Due to high crossover resistances heating of the
plug in connector can result when using the cables with a 12 V vehicle plug.
Notice regarding disconnection from
the power supply
• This device's on/off switch does not completely
disconnect the device from the vehicle's power
and/or the battery. When the vehicle plug is
connected power is still supplied to the device.
To completely disconnect the device from the
vehicle power supply the 12 V vehicle plug must
be removed from the 12 V vehicle receptacle.
Risk of personal injury!
• Keep children away from the connecting cable
and the device. Children frequently underestimate
the dangers of electrical appliances.
• Do not operate the device if it has fallen or is
damaged. Have the device checked and repaired
if necessary by qualified technicians.
Technical data
DC Input
Voltage: 12V
Maximum voltage: 15,5 V
Maximum power
consumption: 20 A
Low voltage alarm: at 10,6 ± 0,3 V
Low voltage shutdown: at 10 ± 0,3 V
Over voltage shutdown: at 16 ± 0,5 V
AC Output
Voltage: 220-240 V ~50 Hz
Output power: 0,65 A
Continuous load: 150 W (> 4 h)/
170 W (30 min)
Peak load: 300 W (0,1 s)
Efficiency: approx. 85 %
Output wave form: modified sine
Overload protection: 200 W (+/- 5%)
Temperature Switch-off: 65°C
(at 50W +/- 5% Loading)
Fuses
Power inverter: 20 A automotive flat fuse
Power failure protection switch
Power failure
shut off: >3 mA
General data
Measurements (without vehicle plug)
(L x B x H): 185 x 73 x 58 mm
Weight : 470 g approx.
Operating temperature: 5°...40°C
Operational humidity: 0 - 80 %
(relative humidity -
no condensation)
Subject to technical changes.
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Operating Elements
Fan (on the rear panel)
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12 V vehicle plug
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On/Off switch
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AC socket
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Operation LED/Overload indicator
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Initial operation
Unpacking
1. Remove the device from the packaging.
2. Remove all foils.
Warning:
Do not permit small children to play with plastic
packaging.
There is a risk of suffocation!
Check the items supplied
Before putting the device into use check to ensure
that all of the items listed are present and that there
are no visible signs of damage.
- Power inverter with 12 V vehicle plug
- This operating manual
Operational information
For continuous operation of devices via the power
inverter the 12 V vehicle socket must supply a voltage
between 11 - 15,5 V .
The voltage source of the 12 V vehicle socket can
be perhaps an automotive battery or a regulated
DC voltage like a transformer-accumulator station.
Before connecting the power inverter check to see
that the voltage source is supplying sufficient power
for operation.
The required power needed for operation can be
calculated as follows:
Example
The power source should also supply at least 14,7 A.
Attention!
Never connect the power inverter to a 24 V
supply system. Otherwise the device will be damaged. The device can only be connected to a
voltage source with a nominal voltage of 12 V.
Setup
• The power inverter should be positioned on an
even, flat surface. Make sure that there is 1 cm
free space remaining all around the power inverter
for air circulation.
• A distance of 50 cm must be maintained behind
the fan's
ventilation slots.
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In vehicle operation
If you are operating the power inverter in a vehicle
make sure that the installation is not a hindrance
when driving the vehicle. For this, install cables so
that they do not come into contact with moveable
parts in the vehicles interior and they do not obstruct
the view.
Note:
The power inverter can also be operated when
the engine is switched off. However be aware
that the power inverter possibly may not function during an engine startup.
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Connection to a voltage source
Attention!
Before connecting the power inverter to a voltage source make sure that the on/off switch
on the device is in the position 0.
Attention!
Do not use the power inverter in vehicles whose plus pole is connected to the vehicle body
and/or the chassis.
The positive pole must be inside the 12 V receptacle. Do not use the power inverter in vehicles
with positive earth 12 V receptacles. Otherwise
the device will be damaged.
• Insert the 12 V vehicle plug
vehicle receptacle.
into a 12 V
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Connection and operation
of a load/device
• Now switch on the load/device to be operated.
When switched on a short signal tone can be
heard.
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Note:
If a signal tone can be heard and the operation LED/Overload indicator
input voltage is too low or the power of the
load/device connected to the power inverter is
too high.
Attention!
The power inverter is equipped with a residual
current protection switch, which by residual currents >3mA at the safety contacts of the 220 240 V socket
off. If this should happen immediately remove
the device connected to the power inverter and
under no circumstances should you connect this
device to any other power supply! The device
is defective and must be examined and if
necessary repaired by a specialist before it
can be put back into service!
, switches the power inverter
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lights up red the
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Attention!
Before connecting a load/device to the power inverter make sure that the on/off switch
the device is in the position 0.
Make sure that the power of the load/device
to be run that you intend to connect to the power inverter does not exceed the continuous load
rating specified in the power inverter's technical
data.
• Insert the plug of the connecting load/the device
to be operated into the 220 - 240 V socket
of the power inverter. Do not switch on the load/
device to be operated yet!
• Switch the power inverter on by moving the on/off
switch
functioning properly the operation LED/Overload
indicator
to the position I. If the power inverter is
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will light up green.
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on
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Device operation information
General notes
Usually on the device's rating plate you can find
information regarding the power consumption in
amperes (A) or the wattage (W).
Before operation make sure that the maximum power
consumption does not exceed 0,65 A and the maximum continuous load is not more than 150 W.
• Loads with a high internal resistance operate
very well with the power inverter, on the other
hand, loads with a low internal resistance, for
example heating and cooking devices have a
power consumption in watts that is too high.
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• Inductive loads, for example, televisions or stereo
systems (devices with an inductor or a transformer)
often require a much greater switch on current
than resistance loads with the same specified
wattage. When switching on, television sets demand
much more power than that indicated on the
rating plate.
Therefore it may be necessary to switch the power
inverter on and off several times in order to switch
the television set on.
• Most heat producing devices, for example, hair
dryers, clothes irons or heating fans can not be
operated via the power inverter because the
power consumption of these devices exceeds
the output power of the power inverter.
• MIn the event of uncertainty, please consult the
manufacturer of the connected appliance.
Low battery signal
• When the battery runs low (under 11 V) a continuous signal tone sounds to indicate that the battery needs to be charged. The operation
LED/Overload indicator
green.
• When the battery voltage drops below 10 V
the power inverter switches off and the operation
LED/Overload indicator
continues to light up
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lights up red.
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Handling general failures
Electrical tools
• When an electrical tool will not switch on or
only runs for a short time switch the power inverter
on and off several times while the electrical tool
is switched on.
Television sets
• The power inverter is shielded and puts out a filtered sine wave. With the reception of, for example,
very weak television stations it can, nevertheless,
result in interferences and/or image breakdown.
• In this case position the power inverter as far
away as possible from the television, antenna
cable and antenna.
• Reposition the power inverter, television, antenna
cable and antenna until reception improves.
• If possible use a high quality, shielded antenna
cable.
Audio systems
• Some audio/video systems issue a buzzing tone
through the speaker when they are being operated
via the power inverter. The reason for this is that
these devices can not filter the modified sine
wave of the power inverter and this is not a defect
in the power inverter.
Troubleshooting
Low output voltage
Possible cause and remedy:
• The power inverter is overloaded. Reduce the
load until you no longer exceed the maximum
load as specified in the technical data.
• The input voltage is below 11 V. Maintain the input voltage of the power inverter above 11 V to
keep the output voltage constant.
Low battery voltage signal sounds
continually
Possible cause and remedy:
• The battery is defective. Replace the battery.
• Insufficient voltage or power supply. Check the
condition of the 12 V in vehicle receptacle and
the 12 V vehicle plug
these.
and if necessary clean
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No output power
Possible cause and remedy:
• The power inverter is not fully warmed up.
Switch the power inverter on and off again until
the device attached to the power inverter is
supplied with power. Repeat this process in order
to switch the device on.
• The ignition must be switched on for the 12 V in
vehicle receptacle to be supplied with power.
Switch the ignition on and/or in the position I.
• The power inverter is overloaded. Reduce the
load until you no longer exceed the maximum
load as specified in the technical data.
• The power inverter is overheated. Wait until the
device has cooled down. Ensure that there is
sufficient ventilation space. Make sure that the
connected load does not continually exceed the
maximum load, in order to avoid overheating
again.
• The device fuse is burnt out. Consult the service
department in order to put the device back into
working condition. Make sure that the power inverter is connected to the power supply with the
correct polarity.
Cleaning the housing:
Clean the housing surface with a slightly damp
cloth Never use benzene, solvents or detergents
that can damage plastics!
In the event that the ventilation slots become dusty
you can clean these with a soft brush.
Disposal
Disposing of the device
Do not dispose of the appliance in your
normal domestic waste. This product is
subject to the European guideline
2002/96/EC.
Dispose of the appliance through an approved disposal centre or at your community waste facility.
Observe the currently applicable regulations.
In case of doubt, please contact your waste disposal
centre.
Disposal of packaging
Dispose of the packaging materials in an
environmentally responsible manner.
Cleaning
Risk of potentially fatal electrical
shock:
• Never submerse the device in water or other
liquids!
• Do not allow any liquids to penetrate the
housing.
• Before every cleaning remove the power inverter from the 12 V vehicle receptacle. Also
remove any devices connected to the power
inverter.
Importer
KOMPERNASS GMBH
Burgstrasse 21
D-44867 Bochum
www.kompernass.com
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Warranty & Service
The warranty for this appliance is for 3 years from
the date of purchase. The appliance has been manufactured with care and meticulously examined before delivery. Please retain your receipt as proof of
purchase. In the event of a warranty claim, please
make contact by telephone with our Service Department. Only in this way can a post-free despatch for
your goods be assured.
The warranty covers only claims for material and
maufacturing defects, but not for transport damage,
for wearing parts or for damage to fragile components, e.g. buttons or batteries. This product is for
private use only and is not intended for commercial
use. The warranty is void in the case of abusive and
improper handling, use of force and internal tampering not carried out by our authorized service
branch. Your statutory rights are not restricted in
any way by this warranty.
The warranty period will not be extended by repairs
made under warranty. This applies also to replaced
and repaired parts. Any damage and defects extant
on purchase must be reported immediately after unpacking the appliance, at the latest, two days after
the purchase date. Repairs made after the expiration of the warranty period are subject to payment.
DES UK LTD
Tel.: 0871 5000 700
e-mail: support.uk@kompernass.com
Kompernass Service Ireland
Tel: 1850 930 412 (0,082 EUR/Min.)
Standard call rates apply. Mobile operators may vary.
e-mail: support.ie@kompernass.com
(£ 0.10 / minute)
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