VOLTWORKS VK-1100HB User manual

13. FAILURE GUIDELINES
Cannot drive the load
Do not use it when the battery is charging. Check the
rated voltage of the battery and make sure that it is in
the allowable range of the input voltage
input voltage.
Cut off the load and let it cool naturally for 10 to
30 minutes. Restart it after it resumes to normal
temperature. The load power is too large, reduce the total
load power to the range of rated power. Avoid blocking the
vent and improve the ventilation condition. Reduce the
ambient temperature.
1. Use a true RMS multimeter to measure, such as model
FLUKE 177/179.
2. Try to maintain the input voltage in the range of rated
power
3. Change the battery of the multimeter then test again.
1. Load power is too large, or the actual
power of the appliance exceeds nominal
power.
2. The starting power is larger than rated
power (such as motor).
Fault / Display Cause Solutions
Recharge or replace the battery
High input DC voltage
Overload
Over temperature
1. The switch is off.
2. The battery lead isn't connected well
1. RMS Multimeter measurement error
2. The battery power of RMS Multimeter is
low
3. The input voltage is too high or too low
1. Turn on the power switch.
2. Check the cables and make sure they are tightly
connected.
Reduce the load power.
Low input DC voltage
No output voltage,
buzzer sounds
continuously
No output voltage
Incorrect output
voltage
Reduce the load power, or turn on the appliance first, then
turn on the inverter.
The internal inverter soft-start circuit will buffer starting
the appliance.
If the unit still doesn't work normally after using all the methods above, it may be the
internal circuit faults. Please return it to the supplier for maintenance.
8.
WARRANTY
This product is designed using the most modern digital technology and under very strict
quality control and testing guidelines. If, however, you feel this product is not
performing as it should, please contact us: [e-mail] We will do our
best to resolve your concerns. If the product needs repair or replacement, make sure to
keep your receipt/invoice, as that will need to be sent back along with the package and
prepaid to VOLTWORKS.
The following situations will void warranty:
1. The box is distorted, damaged or changed, and interior parts damaged because of
an exterior hit or drop not reported at time of delivery.
2. Connect the DC power incorrectly reversing the polarity.
3. Dismantled or repaired the unit by an unauthorized person.
4. The unit was damaged by incorrect installation or operating method.
To find out where to buy any of our products, you may also e-mail: Customer Service
Contact:
[e-mail]
MODEL: VK-1100HB
Warning: This manual contains important safety and
operating instruction. Please read it carefully before use
the unit.
USER'S MANUAL
1100Watt Power
Inverter with
LCD display

1.
SPECIFICATIONS
VK-1100HBItem
1100W
2200W
110~120V AC±10% (Refer to label)
50Hz / 60Hz ± 1Hz (refer to label)
Modified wave
Approximate 90%
65 ± 5℃
1300W
YES
LCD
5VDC, Max 2.4A×2
0 ~ 40℃
-10 ~ 45℃
254×179×69mm
2.2Kg / 4.9lbs
Rated input Voltage
Input Voltage Range
Over Voltage Shutdown
Low Voltage Shutdown
Low Voltage Alarm
Continuous Power
Peak Power
Output Voltage
Frequency
Wave form
Efficiency
Over heat Protection
Over load protection
Short Circuit protection
Display
USB Output
No load current 0.9A
30A×4
Fuse (built in)
Cooling fan
Operating Temperature
Storage temperature
Size (L×W×H)
Weight
The cooling fan won’t work while turning on the inverter,
till the temperature of inverter case reach 40℃
(Automatic Recovery/Shutdown)
Remark: Due to the continuous improvement of products, the technical parameters in
this manual are subject to change without prior notice.
-
12VDC
9.5~16VDC
16±0.5VDC
9.5±0.5VDC
9.8±0.3VDC
24VDC
19~23VDC
32±1VDC
19±1VDC
19.6±0.5VDC
0.7A
30A×2
2. WARNING AND SAFETY
1) Read the manual before connecting this inverter and keep it for future reference.
2) Don't put the inverter under sunlight, near a heating source, wet or humid environment.
3) The case housing of inverter will be hot while using. Do not allow flammable materials to
contact the inverter, such as clothing, sleeping bags, carpet or any other flammable
materials. The heat from the inverter can damage these items.
4) The power inverter is designed to be used with a negative ground electrical system!
Don't use with positive ground electrical systems (the majority of modern automobiles,
RVs, trucks and boats are negative ground).
5) Do not disassemble the unit: it may cause fire or electric shock.
6) This device should only be serviced by a qualified technician. This item does not have
any serviceable parts.
7) Prevent body contact with grounded surfaces such as pipes, radiators, ranges, and
refrigerator enclosures during installation.
8) Do not operate the inverter if under the influence of alcohol or drugs. Read warning
labels on prescriptions to determine if your judgement or reflexes are impaired while
taking drugs. If there is any doubt, do not operate the inverter.
9) People with pacemakers should consult their physician(s) before using this product.
Electromagnetic fields in close proximity to a pacemaker could cause interference to or
failure of the pacemaker.
10) Keep the inverter well-ventilated. Do not place any objects on top of or next to the
inverter or allow anything to cover the cooling fans; doing so can cause the inverter to
overheat, causing a potential fire hazard and/or damage to the inverter. Leave adequate
ventilation space underneath the inverter as well; thick carpets or rugs can obstruct air
flow, causing the inverter to overheat.
11) Avoid unintentional starting. Be sure the switch is in the OFF position when not in use
and before plugging in any appliance.
12) Keep inverter away from children. Don't install the inverter where it is accessible to
children.
13) The power inverter will output the same AC power as utility power, please treat the AC
outlets as carefully as you would your home AC outlets. Do not put anything other than
an electrical appliance into the output terminal. It may cause shock or fire.
14) Disconnect the battery and inverter when not in use.
Note: Performance of this unit may vary depending on the available battery power or
appliance wattage.
Warning: The warnings, cautions, and instructions discussed in this instruction manual
cannot cover all possible conditions and situations that may occur. It must be
understood by the operator that common sense and caution are factors which cannot be
built into this product, but must be
1. INSTRUCTION
The VOLTWORKS Power inverter product line is used for back-up power. The pure sine product line
is ideal for sensitive equipment and provides clean power, which is more efficient for back-up power
applications. It converts DC (direct current/car battery) power into AC (alternating current) power that
can be used for running a wide variety of tools and appliances under rating power. This inverter is
perfect for providing mobile power in cars, boats and work trucks. The inverter can also be utilized as
a back-up source of electricity in the event of an electrical failure or for several off-grid applications
such as camping or in your RV.

4. ASSEMBLE
1).The position of Mounting
First ensure that there is enough space to install the inverter, while the installation
location must meet the following requirements:
① Drying: Do not use water or other liquids dripping on the inverter
② Cool: a working environment temperature of the product is 0-40℃, preferably a
temperature of 10-25℃, at a temperature as low as possible within this range
③ Ventilation: There should be a certain distance between inverter and other objects, to
avoid blocking the products vents.
④ Clean: Do install the products in the dusty, wood chips or other particles , If cooling fan is
turned on, the particles involved in the inside of the product, thus affecting the normal
work.
⑤ While inverters and batteries connected, will produce arcs or sparks, so there should not
be around flammable objects such as gasoline, alcohol, etc.
2) Assemble the inverter
For this big power inverter, because of the heavier weight, preferably mounted on a solid
platform, such as floor, table or mounting bracket fine. In order to avoid falling off,
platform for supporting the product should can bear the weight of sufficient capacity, and
it is good with four screws to secure the product.
3) Installation of remote control box
① Fixed on the plane with an opening, then fix two screws directly on the position of two
installation holes of the remote control box.
② The remote control box can also be installed on the base of 86X86mm electrical socket.
③ Connect the connection between the remote control box and the inverter.
Note: This product can also be used as a common inverter without connecting the
remote control box.
5. BATTERY
1) Current and voltage of battery
The battery is used to supply the DC input voltage required by the product, and its rated
voltage must be in line with the rated input voltage of the inverter, beyond the input
voltage range of the inverter, and the cross connection will cause the product to be under
voltage or under voltage protection.
Battery Status
FAULT
POWER
ON/OFF
85mm
4.5mm
Switch
Power indicator
Fault indicator
Wire of remote
Battery level
status
AC outlets Dual USB ports
Remote controller
Inverter power switch
LCD Disaplay
USB
POWER
(1) DC Input Side
3. PARTS LIST
3.2.
(2) AC Output side
(3) Remote controller box
Grounding

At the same time, the battery must provide enough current for inverter, a small capacity
battery is not able to drive high power appliances, in this case, usually due to excessive
current and battery discharge the battery terminal voltage low, under voltage protection
products appear.
The simple formula for the battery current is the load power / the battery voltage. As the
inverter itself will be part of the loss, so the actual current will be greater than this value
of about 10%. For example: the battery voltage is 12VDC, the load power is 1000W,
then the actual current size of the battery is about 1000W÷12V×110%=91.6A
2) Battery working time
The using time of battery depends on battery capacity (AH) and the power of the
connected load (W), the calculating method is: Time (hours) =battery capacity (AH) x
battery output voltage (V) x efficiency rate ÷ electrical power of using (W) such as the
12V DC input inverter uses the 12V battery, if the battery capacity is 2000AH and at this
time the inverter is driving 1000W power load, the efficiency rate is 90% when the
battery is full, according to the formula above, the battery use time =2000(AH) / (1000 /
12x110%) = 21.8 (Hour). This means the battery can be used for 21.8 hours.
Note: The above formula is the calculation result of the battery discharging rate in 20
hours, that is, when the discharging current of 2000 Ah battery does not exceed 100A,
the discharging time will be shortened when the discharging current exceeds this value.
This part can refer to the battery manufacturer's specifications, and whether the battery
is fully charged will also affect this result.
6. CONNECTION
1) Grounding
The power inverter has a terminal on the back panel marked "Grounding" or " ". This
is used to connect the chassis of the power inverter to the ground. The ground terminal
has already connected to the ground wire of AC output receptacle through the internal
connecting wire. The ground terminal must be connected to the ground wire, which will
vary depending on where the power inverter is installed. In a vehicle, connect the
ground terminal to the chassis of the vehicle. On the ship, connect the ground terminal
to the ship grounding system; In a fixed position, connect the ground terminal to the
earth.
Warnings:
● To make sure the firmness of the connection. The ground wire must be
2
14AWG(2.08mm )or even larger.
● Do not operate the power inverter without connecting to ground. Electric shock hazard
may result.
2) Connect to the battery
① Please do all the safety precautions before connection, then check whether the battery
voltage is in accordance with the input voltage of the inverter. Only the voltage of
battery according with the requirements can be allowed to connect with the inverter.
5.
② The connecting wire must be big enough to bear current, or else the inverter can not
support big load because of voltage reduce caused by the small cross-sectional wire.
Depending on the below table, please select the input DC wire or larger one.
Notice:
1. The above table is only for your reference. In practice, the thick wire can be replaced by
two thin parallel wires if only the total section acreage of the wire meets the
requirements.
2. In high current, the input DC wire may produce voltage drop, therefore,the operating
voltage should be subject to the value on the terminals. If the voltage drop is too large,
it can increase the acreage of the section or reduce the length of the lead.
3. Connect cathode wire of the battery to the cathode terminal (black) on the back panel of
inverter and then connect the anode wire of the battery to the anode terminal (red)on
the inverter, and fix them.
Warnings:
① Please wear eye patch and work clothes when working around the battery to avoid the
acid and corrosive objects harm your eyes and skin.
② Prepare enough water and soap. In case the acid materials contact eyes or skin, clean
it by soap and water as soon as possible. If the acid materials spay to your eyes
accidentally, clean it by cold water immediately and then sent to hospital.
③ Do not put any combustible material in the location of installation for spark will result
when it is connected to the battery.
④ Keep good ventilation. The battery may produce a little inflammable gas when it works,
so keep away from the inverter and it is better to install them in different space.
⑤ Fix the connecting wire of the input DC, or it will result the over-reduction of the voltage
or over-temperature of the wire.
⑥ Reverse connection of the polarities or the short circuit will burn the fuse or result the
permanence damage of the internal elements of inverter.
⑦ Take away the metal accouterment, such as ring or watch, when installation to avoid
the short circuit.
⑧ Although there is over-voltage protection, it may also cause damage of the inverter if
the input voltage is too high.
3) Connection of the AC appliance
Put the power plug of the AC appliance load into the output AC receptacle of the
inverter directly.
Warnings:
1. Make sure that the switches of the inverter and appliance power are in OFF position
before connection.
2. Check the power cord. If it is damaged, it should be connected after replacement.
4.
12V 1100W
1100W
110A
55A
Inverter Input
voltage Rating power Max current
of cable
Specication of wire length=N m
(Cross section area)
24V
Specification of wire length≤1m
(Cross section area)
2
6AWG (13.3mm )
2
9AWG (6.63mm )
2
N×13.3mm
2
N×6.63mm

7.6.
3. Each outlet of the inverter has a given current rating of the manufacturer. It shall not
exceed this value during use. Otherwise, the socket may be damaged by overheating
and may cause an electric shock.
8 . USAGE OF INVERTER
1) How to use a inverter
① Check the output voltage and capacity of the battery to make sure it applicable to the
requirement of the product use.
② Connect the battery and the DC cable of the inverter to ensure that the polarities do not
be reversed and in good contact.
③ Long press the switch of inverter or of remoter for over 0.5s and later on let it go, if the
indicator lighter on the inverter or on the remoter box is on, it means that the inverter
start to work normally. This method can avoid effectively turning on the unit due to the
interference or any mistakes.
④ Switch off electrical appliances and put electrical appliance plug to the AC output
socket of inverter. And then switch on electrical appliance for using.
⑤ The cooling fans inside the inverter do not work when the unit power on. It doesn't run
until the case temperature rise up to 40℃.
⑥ Switch off inverter and remoter to stop working. At that time, the indicator lights in both
inverter and remoter are off. The inverter does not consume current from battery when
it switched off.
2) How to use USB outlet
The inverter provides two USB which offer stable 5V DC voltage; the maximum current
is 2.4A each, which can directly provide power for the portable device with USB port.
Notice: Before use the USB power supply, please make sure the device can be
charged by USB and the maximum working current is no more than 2.4A
9. SOFT START TECHNOLOGY
The soft start technology built into this inverter protects the unit from delivering too
much AC power at once by gradually increasing the AC voltage pushed out. To make
sure that you are utilizing this feature, turn on the appliance being used before turning
on the inverter. This is especially necessary for equipment that has an inductive load or
electrical motor.
10. OUTPUT VOLTAGE AND WAVE FORM
The output voltage waveform of the inverter is called "quasi sine wave" or "modified
sine wave", it is a step waveform similar like household alternating current , this type of
waveform is applicable to most of the load, including linear or switching power supply,
transformer, electric motor etc.
Since the output voltage waveform of the inverter is different from AC, RMS with
general analog or digital multimeter can not accurately measure the output of the
inverter, please use the true RMS digital multimeter to measure, such as FLUKE
177/179 multimeter
Note: Modified sine wave inverters are not suitable for all electrical appliances. As far
as we know, unusable appliances include induction cookers and some air-conditioning
fans with capacitance voltage-reducing circuits.
SINE WAVE
110V~240V AC
MODIFIED
SINE WAVE
110V~240V AC
Modified Sine Wave and Sine Wave Comparison
11. WORKING INDICATORS
When the inverter works, the LCD displays the current battery power, input voltage and
output voltage. When the inverter is in the protection, the LCD displays the warning
sign and the current protective state, as follows:
1) When the LCD shows "LO", it indicates that it is currently under-voltage protection.
2) When the LCD shows "HI", it indicates that it is in the state of over-voltage protection.
3) When the LCD shows "OL", it indicates that it is in the state of output overload or short
circuit protection.
4) When the LCD shows "OH", it indicates that it is in the state of overheating protection.
12. PROTECTION FEATURES
1. Input under-voltage alarm: When the input DC voltage is lower than 9.8V/19.6V, the
buzzer will whistle intermittently to remind that the inverter will go into the under voltage
protection. Pay attention to save the data if you are using computer.
2. Under voltage protection: The inverter will automatically shut down when the input DC
voltage is lower than 9.5V/19V.The buzzer will whistle continuously,and LCD
shows“LO”, Please turn off the inverter and use it after recharging the battery.
3. Over voltage protection: The inverter will automatically shut down when the input DC
voltage is higher than 16V/32V.The buzzer will whistle continuously and LCD
shows“HI”. Please turn off the inverter and adjust the input voltage to the admissible
range.
4. Overload protection: The inverter will automatically shut down when the load is higher
than the rated power. The buzzer will whistle continuously and LCD shows“OL”. Turn
off the inverter and resume to normal operation after taking away the excessive load.
5. Short-circuit protection: The AC output will be automatically shut down when short
circuited and LCD shows “OL”. It will automatically reset after the problem is solved.
6. Thermal protection: The unit will get bot during operation. If the temperature is higher
than 149°F, the inverter will automatically shut down. Then the buzzer will whistle
continuously and LCD shows “OH”. Please turn off the inverter, and continue using it
after the temperature goes back to normal naturally. Meanwhile find out the factors
causing the fault, such as ventilation, ambient temperature, vent, load power and so
on. It can avoid similar things from happening again.