Expert Power IVOCH2KW User manual

For Models:
IVOCH2KW / IVOCH3KW
Pure Sine Wave 2000W/3000W
Inverter-Charger
OWNER’S MANUAL
110V
12V

Warning
1) General Information
Product Overview
2) Introduction
3) Diagram
4) Technical Specs
5) Top Panel Overview
Wiring Guide
6) AC Wiring Connection
7) DC Wiring Connection
8) Grounding
AC/DC Operation
9) Basic Connection
10) Auto Transfer Switch
Alarms, Behavior, & Display
11) Alarms & Protections
12) LCD Display
13) Error Codes
Additional Support
14) Determining Battery Bank Size
15) Determining Inverter Size & Use
Pg. 2
Pg. 3
Pg. 4
Pg. 5 & 6
Pg. 6
Pg. 7
Pg. 7 & 8
Pg. 8
Pg. 9
Pg. 9 - 11
Pg. 12
Pg. 13
Pg. 14
Pg. 15 & 16
Pg. 16 - 20
Pg. 1
Table of Contents

Safety Information and Warnings
1. The installation of the inverter should be done by professionals or under the
assistance of a local dealer.
2. Verify whether the input DC voltage range meets voltage polarity requirements
(12V±20%). Conrm whether the load device voltage is single-phase 100V ~
120VAC; power should not be more than rated output power of the inverter.
3. Do not spill any liquid on the inverter, or use a damp cloth to wipe the inverter
casing. Do not touch the unit's terminals when running, especially with wet
hands, otherwise electric shock injury can occur.
4. If you need to change the operating environment, do not do so yourself. It should
be done by professionals or with assistance from the supplier/local dealer.
5. The operating environment of the inverter should be well-ventilated with a
temperature range of -4° to 113° F. Keep away from fuel sources and direct
sunlight. Do not run in humid or dusty environments this can cause failures to
occur. During operation, the inverter-charger will reach medium to high
temperatures; this is normal. Remember to maintain proper ventilation during
operation to keep the inverter-charger running in the best condition. To facilitate
this, please keep a clean environment around the unit and DO NOT allow any
vents or fans to be blocked.
6. Keep children away from this unit at all times. It is not a toy. Serious injury or
death could occur if inappropriately handled.
7. Conrm if the inverter can be connected with existing wiring. The AWG rating
should be sufcient for the loads that will be ran.
8. Do not open the inverter under any circumstances. Besides voiding the warranty,
you are risking severe electric shock to yourself and others around you.
The safety of the consumer has been considered prior to designing and creating
this product. Please follow the user instructions carefully to operate and install
this component to your power system. In order to prevent accidents and injuries
please keep this manual for future reference.
Pg. 2
WARNING
This manual contains important safety installation, and operation instructions
for the ExpertPower Inverter-Charger. Please do not operate the
Inverter-Charger without reading this manual first.
PLEASE READ INSTRUCTIONS BEFORE CONTINUING
General Information

Introduction
Our inverter-charger is Pure Sine-Wave,Low-Frequency, and comes equipped with
an On-board Intelligence System that handles most of the heavy lifting within your
electrical system. The inverter converts 12 volt direct current (VDC) into 110 volt
alternating current (VAC), or more commonly, the power you utilize at home through
your wall outlets. A typical solar power system consists of a solar panel, solar charge
controller, inverter, battery, and intermediary components such as fuses and breakers.
This inverter also has an Auto Transfer Switch also known as the Bypass Feature
which allows the system to be used with or without batteries meaning it can depend
solely on shore-power for all your AC and DC appliances.
Core Advantages:
• Low frequency - Heavy duty transformer
• High conversion efciency (90%〜98%)
• Intelligent CPU management
• Latest inverter technology
• Best electric components
ExpertPower 12V Inverter-Charger
Applications
Pg. 3
Product Overview
Home Power Tools
Office Equipment
Household Appliances
Kitchen Appliances
Industrial Equipment
Home Entertainment
Circular saws, drills, grinders, sanders, buffers, air
compressors, weed and hedge trimmers.
Computers, phones, monitors, printers, scanners, 3D
printers, fax machines, internet and Wi-Fi modems.
Vacuum cleaners, fans, clippers, electric shavers,
sewing machines, lights, washers and dryers.
Coffee makers, blenders, ice makers, toasters, electric
stoves, dish washers, refrigerators, and water pumps.
Metal halide lamps, high-pressure sodium lamp, air
compressors, and ventilation systems.
Televisions, blue-ray players, gaming consoles, stereos,
musical instruments, and satellite TV receivers.

Top View
I
J
K
Front View
P
O
Q
Back View
Switch Panel
LM
N
Terminals:
1. Negative (-)
2. Positive (+)
LCD Screen
Switch Panel Port
Status LEDs
Battery Type Multi-Switch
50Hz/60Hz Switch &
Priority Modes
Next Page Button
Mounting Brackets
A.
B.
C.
D.
E.
F.
G.
H.
Top View
1
Component Key
2 3 4
1
Inverter Output Protection
AC Outlets
AC Terminal
O.
P.
Q.
Fan
RS232 Communication Port
Grounding Terminal
I.
J.
K.
Front View
2
Back View
4
Switch Panel LEDs
On/Off Switch
26 ft Communication Cable
L.
M.
N.
Switch Panel
3
Inverter Diagram
H
B
C
A
2
1
D
EF
G
Pg. 4

Technical Specifications
Pg. 5
Rated Output Voltage
Output Voltage Range
Nominal Output Frequency
Efficiency
Safety Certifications
Communication Port
Cooling Activation
Operating Temperature Range
Storage Temperature Range
Operating Humidity Range
Noise
110Vac
±10% rms
50 / 60 ± 0.3Hz
>90%
CE / EMC / UL
RS232
Fan Activates According to Temperature Variations
32°F to 140°F
5°F to 140°F
5% to 95%
Max 60dB
Low Battery Alarm
Low DC Input Voltage Auto Shutoff
Low DC Input Voltage Recovery
10.5Vdc ± 0.3Vdc
10.0Vdc ± 0.3Vdc
12.0Vdc ± 0.3Vdc
High DC Input Voltage Auto Shutoff 16Vdc ± 0.3Vdc
High DC Input Voltage Recovery 15.5Vdc ± 0.3Vdc
Inverter
Overload
2200 - 2500W Inverter shutoff after 15
min.
2500 - 3000W Inverter shutoff after 60s.
3000W Inverter shutoff after 20s.
3300 - 3750W
3750 - 4500W
4500W
Behavior
2000W Model 3000W Model
≥98%
Pure Sine Wave
AC 75V to 135V
110Vac
92Vac ± 4%
97Vac ± 4%
127Vac ± 4%
122Vac ± 4%
50Hz / 60Hz (Auto Detect)
Pure Sine Wave
<5ms
<5ms
30A
Efficiency
Input Wave Type
Input Voltage Range
Nominal Input Voltage
Low Voltage Shutoff
Low Voltage Recovery
Over Voltage Shutoff
Over Voltage Recovery
Nominal Input Frequency
Output Wave Type
Transfer Time (AC to DC)
Transfer Time (DC to AC)
Automatic Transfer Switch
Inverter Specifications
Inverter Safety Specifications
AC Bypass Specifications
No Load / Idle Consumption 60W 90W
2000W Model 3000W Model

Pg. 6
2000W Model 3000W Model
40A 60A
According to the battery type
Circuit breaker
Charging Current
Theoretical Charge Voltage
Charging Circuit Protection
Charger Specifications
Top Panel Overview
Panel Components
AC Input LED light GREEN when shore power is connected.
AC Input
Inverter LED lights YELLOW when it is active.
Inverter
Charger LED lights GREEN when charging.
Charger
Alarm LED lights RED when fault is detected.
Alarm
Battery Type selector 0-9 (See Pg. 11).
Battery Type
Frequency Selector (See Pg. 11).
Priority Switch
SWITCH #1
SWITCH #2 AC/DC Priority Selector (See Pg. 11).
Switch to the next page on the LCD display.
Next Page

Pg. 7
WARNING:
The output voltage of this unit must never be
connected in its input AC terminal, overload
or damage may result. Always switch on the
inverter before plugging in any appliance.
Wiring Guide
DC Wiring Connection
It is recommenced that the battery bank be kept as close as possible to the inverter.
The following table is a suggested fuse and wiring guide for a 3 ft cable. If wiring is
longer than 3 ft, please increase the diameter (AWG) of cable for stability and safety.
Cable Size, Material, and Safety
Model
Wire Gauge / Min
Battery Voltage Fuse Size
0~3 ft 3~16 ft
2000W 12 Vdc
12 Vdc
300A
400A
0 AWG 3/0 AWG
3000W 3/0 AWG 4/0 AWG
AC Wiring Connection
This connection method is completely optional. We recommend using 10 -12 AWG
wires for AC terminal block connection. The diagram below shows an example of
both AC input and output being used. This inverter charger can also be used with
just AC input or output connection depending on your needs. Please contact our
support team if you are unsure how to wire any part of your inverter.
110V Single Phase
•Slightly unscrew the rst row of
screws to open the wire clamp.
•Insert exposed wire segment
into the bottom opening.
•Tighten the screw back in while
the exposed wire segment is
inserted. Ensure all wires are
properly fastened.
AC Terminal Block Wiring:
AC INPUT WIRE AC OUTPUT WIRE
SHORE POWER
AC APPLIANCES
AC BREAKER BOX
AC INPUT AC OUTPUT
110V Connection Guide
Live / Hot Neutral Earth / Ground

Connecting Battery Bank
Pg. 8
•The stability and safety of this product can be improved by using one shorter-
thicker cable. Therefor, if in doubt, round up in wire size and keep the length as
short as possible. Another important aspect of your power system is to take into
consideration the cable material. We highly recommend that you use only coper
cables for your wiring needs as they are the gold standard for this type of product.
•Unscrew the top plastic screw on
the protective plastic cover.
•Remove protective plastic cover to
get access to the positive and
negative terminals.
•Unscrew the metal bolt and remove
both washers.
Grounding Your Inverter
Grounding is an important step for any electrical system and is highly recommended.
Grounding your electrical system can help with safety and to prevent faults. It is also a
requirement for certain Local and National Electric Codes (NEC). Please consult with
NEC for more information on this subject regarding local regulations and suggestions.
Grounding Your System
•The recommended wire size for grounding this inverter is an
8 AWG copper wire.
•Connecting to ground must be done via the available
grounding cables for house applications or to the metal frame
of an RV for mobile home applications.
•Attach the Battery Pack Cables to the
appropriate terminal, place washers
over the cable, and screw the bolt
back on rmly.
•Return the protective plastic cover and
fasten it back on with the plastic screw.

Basic Connection
Auto Transfer Switch
Pg. 9
Charging
&
Inverting
Inverter Charger
With
Transfer Switch
AC Breaker Box AC Load
Solar Panel
Solar Charge
Controller 12V Battery
Shore Power
DC Fuse Block DC Load
When set to AC priority, you will draw from shore power and not the battery bank to
power the 110V appliances. When disconnected from shore power, DC power from the
battery bank/solar will be converted into AC.
Below is a typical example of what the electrical system is like. Shore power also
known as AC Input ows through the inverter-charger to provide AC power guarded by
breakers or fuses while charging the battery bank. The same concept applies while
under battery power, as the inverter will be powered by DC (battery) and then convert-
ed to AC while protected with battery specic fuses and breakers. The battery can be
charged utilizing solar panels in conjunction with a solar charger controller.
Inverter Charger
With
Transfer Switch
AC Breaker Box AC Load
12V Battery
Shore Power
DC Fuse Block DC Load
Solar Panel
Solar Charge
Controller
Charging
Inverting
Inverter Charger
With
Transfer Switch
AC Breaker Box AC Load
12V Battery DC Fuse Block DC Load
Solar Panel
Solar Charge
Controller
When shore power is CONNECTED
When shore power is DISCONNECTED
AC Priority (Recommended)
AC/DC Operation
•When shore power is connected, it will be utilized over the battery bank to power

Pg. 10
• AC loads will be powered by the battery with the inverter if battery voltage is
higher than 11V.
• When battery voltage drops below 11V, the inverter automatically switches to
shore power (if connected) and charges the batteries.
• When battery is charged to 13.5V, the inverter will automatically switch back to
battery power.
• When shore power is not detectable and battery voltage is lower than 10V, the
inverter will shut down. When shore power is detected again, the inverter will turn
on automatically and switch to shore power and charge the battery or when
battery is charged to 12V, inverter will automatically turn on and switch to battery
power.
When set to DC priority, the inverter will utilize the battery bank for electricity over
shore power. When battery voltage gets too low, it will automatically switch to shore
power if it is connected. Charging can be turned off by setting battery switch to 0.
(See Page 10)
DC Priority
the inverter while simultaneously charging the battery bank this is also known
as the bypass function. Charging can be turned off by setting Battery Type
switch to 0. (See page 10)
• When shore power is disconnected, the inverter automatically switches to
solar/battery bank power in 5ms.
• When shore power is restored, the inverter will automatically switch the power
source from battery bank to shore power in 5 ms.
Inverting
Inverter Charger
With
Transfer Switch
AC Breaker Box AC Load
12V Battery DC Fuse Block DC Load
Solar Panel
Solar Charge
Controller
Shore Power
NOT IN USE
When battery voltage is HIGHER THAN 11V
Inverter Charger
With
Transfer Switch
AC Breaker Box AC Load
11V Battery
Shore Power
DC Fuse Block DC Load
Solar Panel
Solar Charge
Controller
Charging
When shore power is connected & battery voltage is LOWER THAN 11V

Pg. 11
• To move the dial use a small screwdriver, coin, or other at tool
and insert it into the arrow shown on the left. Turn the screwdriver
so that the arrow in the BAT Type Dial points to the desired
Switch Setting shown below.
• Use your ngernail, pen, or small enough object to change the
switches to the desired priority.
Using the Battery Type Dial:
0
1
2
3
4
5
6
7
8
9
BATTERY
TYPE
Using the Priority Switch:
- Switch 1:
Move to "ON" to set frequency to 60Hz. For 50Hz, set
the switch back down (not usually used in the USA).
- Switch 2:
Move to "ON" to set priority to DC. For AC priority, set
the switch back down (Recommended).
ON
1 2
SWITCH
PRIORITY
Different kinds of batteries have varying charging algorithms. In order to protect your
power system, our inverter is designed to be suitable for a variety of different types of
batteries. On the top of the inverter, you can choose the battery type to your needs
using the Battery Type Dial and the Battery Type Settings Table below to ensure that
your battery is with in optimal condition.
Battery Type Settings Table:
Battery Type Selections and Priority Switch
FACTORY DEFAULT
Gel USA
AGM 1
AGM 2
Sealed Lead Acid
Lithium Iron-Phosphate (LiFePO4)
Open Lead Acid
Calcium
Desulphation
Not Used
Description
Switch Setting
0
1
2
3
4
5
6
7
8
9
Voltage
Boost
12V
No Charging
14.0
14.1
14.6
14.4
14.4
14.8
15.1
15.5
-
Voltage
12V
Float
No Charging
13.7
13.4
13.7
13.6
13.8
13.3
13.6
4 Hours Then Off
-

Alarm Indications
Pg. 12
Alarms, Behavior, & Display
Fan Protection
When heat sink temperature goes over 221ºF, the inverter
shuts down after 30 seconds.
Over Temperature Protection
Yes
Back-Feed Protection
Restarts the inverter.
Recover From Fault Shutoff
Alarms & Protections
Buzzer beeps every 5s. Then inverter
shutoff after 60s.
High Battery Voltage
Buzzer beeps every 5s.
Low Battery Voltage
When heat sink temperature goes over
221ºF buzzer beeps every 5s.
Over-Temperature
Audio Alarm Behavior
Fault 2000W Model 3000W Model
Inverter
Overload
2200 - 2500W
Beeps every 1s after 14 min., and
inverter shutoff after the 15th min.
2500 - 3000W
Beeps every 1s, and inverter shutoff
after 60s.
3000W
Beeps every 1s, and inverter shutoff
after 20s.
3300 - 3750W
3750 - 4500W
4500W
Alarm LED
ON
ON
Flashes
None

Pg. 13
LCD Will Display as Follows:
Output Information
utput
Voltage: 110.0 V
Out- Fre: 60.0 Hz
Status: P- Grid
Perent: 050%
Voltage:
AC Output Voltage
Out-Fre:
AC Frequency - 60Hz
Operation Status
Inverter status.
l.
Input Information
AC Volt:
AC Input Voltage.
BAT Volt:
Battery Input Voltage.

AC Volt: 110.0 V
BAT Volt: 012.0V
Status:
P-Grid: AC Input
Inverter: Battery Input
Percent:
Rated inverter power
usage in percentages
el
LCD Display

Fault Status Table:
Interpreting Faults
Pg. 14
Error Codes
Fault Detection
Shows error codes for detected faults.

Fault Code:
TX 0000000
Fault Description
Communication Failure
Battery Below-Voltage
Inverter Internal Failure
Fan Failure
Output Overload
Output Short Circuit
Battery Failure
Battery Over-Voltage
TX 0000000
1000000
0100000
0010000
0000100
0000010
0000001
0001000
Code
Faults can occur for a variety of reasons. When an error is detected the inverter charger
will show a fault code. Use the fault code and reference the table below to troubleshoot
the error. If the fault persists please feel free to contact us for support.

Pg. 15
Battery Bank —Size and Example
To select the correct battery bank size you must determine the amount of total watts
(load) and how long the load needs to operate. This can vary depending on your
needs, applications, and appliances.
Estimate Wattage (Load) — Appliances to be Powered
1
Example for Determining Battery Sizes
2
350W
Blender
650W
Microwave
100W
42” TV (LED)
1000W
Toster
50W
Laptop
800W
Coffee Maker
60W
RV Fridge
40W
Fan
1000W
Hair Dryer
NOTE: This is a general Running Watt guide. Be sure to verify the correct Power Consumption & Surge of your appliances.
•A watt-hour is the Voltage (V) multiplied by the Current (Amps) that the battery
can provide during a period of use known as Amp Hours (AH).
•Using the equation below multiply the Volts (V) of your battery by the Amp
Hours (AH) of each battery to determine total Watt Hours (WH).
For an example of a rough estimate on appliance runtime, use the provided
information above in conjunction with the example of 12V applications table on
the next page.
Battery
Voltage
Battery
Amp Hours
Battery
Size
12.8V x100AH =1280WH
60W
Light (1 bulb)
Battery Size: The total Watt Hours (WH) determines the size of the battery.
V xAH =WH
In this example we used one 12V 100Ah battery to determine its Watt Hours.
(For more than one battery use: WH x the number of batteries)
Determining Battery Bank Size
Additional Support

Battery
Watt Hours
Appliance
Watts
Appliance
Run Time
1280WH ÷ 60W =21.3Hrs
WH ÷W =Hrs
In this example we also used one 12V 100Ah battery (1280WH) & Lights at 60W.
(For a more accurate runtime use the Wattage stated on your appliances’ label.)
Pg. 16
Determining Inverter Size & Use
Inverter - Size, Appliance Variables, & Surge
Our inverters are rated to handle specific surge or starting watts for large or heavy duty
appliances. To select the appropriate inverter for your system you also need to take
into consideration its Rated Continuous Power and Peak / Surge Power. For the
best operation of your appliances you will need to understand Appliance Variables
such as duty cycles or variable active running times, and Starting Surges.
Furthermore, you must also take into consideration the Inverters’ Idle Power
Consumption and include this in your total power draw from your Battery Bank.
Examples With 12V 100Ah Battery
3
Use the equation below to determine the amount of hours an appliance can
run based on the battery WH and the appliances’ Watts:
60W
90W
2000W
Idle Power
Consumption
IVOCH2KW
IVOCH3KW
Model
3000W
6000W
Peak / Surge
Power
9000W
Rated Continuous
Power
A PPLIANCES
R UNNING
W
ATTS
E STIMATED R UNTIME
(100AH / 1280WH)
Lights 60W 21.3 Hrs
Fan 40W 32 Hrs
42” LED TV 100W 12.8 Hrs
E STIMATED R UNTIME
(2 X 100AH / 2560WH)
42.6 Hrs
64 Hrs
25.6 Hrs
Example of Appliance Runtimes
Selecting Inverter Size - Idle, Rated, and Surge Power
1

Pg. 17
To get a more accurate runtime you must take into consideration the efficiency of
the inverter which is 90%. To do this, take the calculated Energy Consumption of
your appliance and apply it to the equation below:
APPLIANCES RATED
WATTS
Refrigerator 700W
Heater 1800W
AC 1200W
EXAMPLE OF
DUTY CYCLES
40%
60%
60%
ESTIMATED ENERGY
CONSUMPTION
280W
1080W
720W
Example of RV Appliances With Duty Cycles
Appliance Variables
2
Rated
Watts
Duty Cycle
Ratio
Energy
Consumption
1200W x 60% = 720W
W xDC% =W
In this example we used the AC with 1200W and 60% Duty Cycle.
*The Duty Cycle in this table is just an example and does not reflect the actual duty cycles of any appliance. Actual
appliance duty cycles can sometimes be extremely varied and thus can only be estimated.
(For a more accurate runtime find the duty cycle or operation habits stated on your appliances’ label.)
Battery
Watt Hours
Energy
Consumption
Appliance
Run Time
1280WH ÷ (720W x1.1)=1.6Hrs
WH ÷(W x1.1)=Hrs
Efficiency
Rate
NOTE: Efficiency of the inverter also needs to be considered which is 90% when inverting 12V to 110V.
(The Inverter’s 90% efficiency is represented by “1.1” in the equation as Efficiency Rate.)
Duty Cycles: All appliances have operation behaviors but most commonly run on
a constant wattage consumption. Other appliances function on variables that
change there power consumption. Variables can be environment temperature,
specific conditions, set or automatic functions. These are known as Duty Cycles
or Power Cycles which is the fraction of a period that the appliance is active.
Simply put, a duty cycle is the ratio of the active time of an appliance in
comparison to the total time period it is in use.

Pg. 18
Starting Surges: An initial surge of electrical power that lasts for less than a
second but is necessary for appliance start up and operation. Starting surges can
typically be found on appliances with motors or compressors, they are usually 2 to
3 times the appliance’s rated running watts.
•Common appliances that have these surges and or intermittent run times are Air
Conditioners, Heaters, Refrigerators, Microwaves, etc...
*The Duty Cycle in this table is just an example and does not reflect the actual duty cycles of any appliance. Actual
appliance duty cycles can sometimes be extremely varied and thus can only be estimated.
Starting / Surge Watts
3
RV EssentialsPersonalKitchenEntertainment
Example of RV Appliances Surge Watts
4 Light Bulbs (75W)
Electric Water Heater (6 Gal.)
Fan
300
1440
200
300
1440
200
100%
100%
100%
A PPLIANCE R ATED W ATTS S URGE W ATTS *D UTY C YCLES
Furnace Fan (1/3 HP)
RV Roof-Top AC (11,000 BTU)
RV Roof-Top AC (13,500 BTU)
RV Roof-Top AC (15,000 BTU)
700
1010
1500
2000
1400
3030
4500
600
100%
60%
60%
60%
Space Heater
Water Pump
Electric Blanket
Shaver
1800
60
100
35
5400
60
100
35
60%
100%
50%
100%
Vacuum
Blender
Coffee Maker
1100
350
800
1100
500
800
100%
100%
100%
Crockpot
Deep Fryer
Electric Fry Pan
Electric Grill
250
1200
1200
1650
250
1200
1200
1650
100%
100%
100%
100%
Laptop
Printer
Satellite Dish & Receiver
Stereo
50
500
30
450
50
500
250
450
100%
100%
100%
100%
Television (19 in)
Television (27 in)
20
35
20
35
100%
100%
Microwave
Toaster
Refrigerator (8 cu ft)
CD/DVD/Blu-ray Player
800
850
150
50
2400
850
450
50
100%
100%
40%
Refrigerator (4.8 cu ft) 60 180 40%
100%
Blow Drier (Hair) 1250 1250 100%

Example
Pg. 19
Calculate Your Appliances
4
APPLIANCES RATED
WATTS
SURGE
WATTS
*DUTY
CYCLES
TIME
PER DAY
(HR)
ENERGY
CONSUMPTION
(WH / DAY)
100 100 100% 2200TV
60 120 40% 24 576Fridge
Use the table below to keep a record of your appliances energy consumption.