Airpax Dimensions | MIL-24X26UVQ | Specifications | Airpax Dimensions MIL-24X26UVQ Specifications

Airpax Dimensions, Inc.
4467 White Bear Parkway
St. Paul, MN 55110-7626
Form: 122028B
(651) 653-7000
Fax (651) 653-7600
February 2007
ISO 9001 Registered Company
Airpax Dimensions, Inc.
DC to AC Power Inverters
Owners Manual for Models:
MIL-24X26UVQ
1
TABLE OF CONTENTS
Section
Description
Page
1
General ……………………………………………………………………………………
1.1
Safety Instructions …………………………………………………………
1.2
Introduction ………………………………………………………………….
1.3
Specifications ………………………………………………………………..
3
3
5
6
2
Description ………………………………..…………………………………………….
2.1
Controls and Indicators ……………………………………………………
2.2
Control Panel LED Indicators ………………………………………….
2.5
Support Items …………………………………………………………………
7
7
8
9
3
Installation ………………………………………………………………………………
3.1
Inverter Components and Installation Tools ……….............….
3.2
Mounting the Inverter…………………........……………………………
3.3
Inverter Wiring …………............………………………………………..
12
12
13
14
4
Operation ……………………….……………………………………………………….
4.1
Startup …………………………………………………………………………..
18
18
5
Troubleshooting ……………………………………………………………………….
5.1
Inverter Troubleshooting …………………………………………….
5.2
Troubleshooting LED Messages ……………………………………..…
19
19
20
6
Appendix …………………………………………………………………………………
21
7
Glossary …………………………………………………………………………………..
25
8
Limited Warranty ………………………………………………………………………
27
*************************************************
Headquarters:
Airpax Dimensions, Inc. ● 4467 White Bear Pkwy. ● Saint Paul, MN 55110-7626
Phone: 651-653-7000 ● Toll Free 1-800-553-6418 ● Fax:
651-653-7600
e-mail: inverterinfo@Airpax.net ● Website: www.airpaxdimensions.com
2
GENERAL
Section 1
1.1 Safety Instructions
Save This Manual
Read this manual before installation, it contains important safety,
installation, and operating instructions. Keep it in a safe place.
All wiring must follow the National Electric Code, Provincial or other codes
in effect at the time of installation, regardless of suggestions in this
manual. All wires should be copper conductors.
1.1.1 Warning and Danger Symbols
To reduce the risk of electrical shock and to ensure the safe operation of your
Dimensions power inverter, the following symbols are used throughout the manual.
ATTENTION: Important operating instructions. Follow them closely.
DANGER: Risk of personal harm and/or electrocution exists in this area.
Use extreme caution.
SAFETY CERTIFICATION: This is a UL Certified product that complies
with all the safety standards required in the USA and Canada for land
vehicle inverters.
3
1.1.2 Inverter Precautions
•
Inverters produce hazardous voltages. To avoid risk of harm or fire, the unit must be
properly installed.
•
There are no user serviceable parts inside, do not remove the cover.
•
The inverter should not be mounted in a location that may be exposed to rain or
water spray.
•
The inverter should not be installed in a zero clearance enclosure.
•
Damage to the inverter will occur if correct polarity is not observed when installing
the DC input cables.
•
Damage to the inverter will occur if an external AC power source is applied to the
inverter’s AC hardwire output.
•
The inverter contains a circuit breaker and capacitor that may produce a spark. Do
not mount in a confined battery or gas compartment.
•
Be sure the inverter is turned OFF during installation.
1.1.3 Battery Precautions
•
Working in the vicinity of lead-acid batteries is dangerous. There is a risk of acid
exposure.
•
Batteries generate explosive gases during operation.
•
There is risk of high current discharge from shorting a battery that can cause fire
and explosion. Use insulated tools during installation.
•
Remove all rings, watches, jewelry or other conductive items before working near
the batteries.
•
Inspect the batteries once a year for cracks, leaks or swelling.
•
Dispose of the batteries according to local regulations. Do not incinerate batteries;
risk of explosion exists.
4
1.2 Introduction
When operating, the direct current (DC) that enters the inverter from the batteries is
filtered by a large input capacitor and switched “On” and “Off” by the Metal Oxide Silicon
Field Effect Transistors (MOSFET) at a rate of 60 cycles per second, and directed into
the transformer which steps the voltage up to 120 volts. The unit has a Digital System
Processor (DSP) to control the output voltage and frequency as the DC input voltage
and/or output load varies. The 120 VAC, 60 Hz alternating current (AC) signal waveform
output is quasi-sine, which is different from a pure sine waveform (see appendix section
H, page 24 for waveform discussion).
AC Out
Dimensions
Power
DC Inverter
DC
In
DC
In
Deep Cycle Battery(s)
FIGURE 1:
Power inverter block diagram
5
1.3 Specifications
Inverter Model
24X26UVQ
Output Power (Continuous @ 50°C)
2600 Watts
Peak Current AC
90 amps
Output Current AC
Up to 30 amps
Output Rating
1 ½ HP
Input Current DC
Up to 130 amps
Weight
55 Lb
Chassis Size: LxHxW
15.75"x11.5"x7.75"
Output Voltage:
Output Frequency:
Output Waveform:
Input Voltage:
Efficiency:
Operating Temperature:
120 VAC RMS ± 5%
60 Hz +/- 0.05%
Quasi-sine with waveform stabilizer, single-phase
22 to 28 Volt DC
Up to 92%
-20°C to 40°C (0°F to 104°F)
Design Features:
•
Thermally controlled cooling fan.
•
Heavy duty conformal coating of the printed circuit
board (“Q”).
•
Vent-less cover (“V”) to protect the inside electronics
from the elements.
•
Powder-coated case
•
Large case TO247 MOSFET design.
•
High peak power for motor starting ability.
•
Enclosed AC and DC cable connections with strain
relief.
•
Remote on/off switch hookup.
•
GFCI outlet protection.
•
LED indications:
- Inverter power
- Low battery
- Overload
- High temperature
- Battery voltage.
Unit Protection:
•
Automatic electronic short circuit protection
•
Automatic electronic overload protection
•
Automatic high temperature shutdown
•
Output circuit breaker
Usage:
•
This inverter may be used to power 120 VAC, 60 Hz
single-phase equipment within the inverter power
rating, unless specifically requiring a pure sine
waveform.
Certifications:
•
UL and CUL Listed.
Battery Protection:
•
Low battery shutdown at 21VDC with in-rush delay.
6
DESCRIPTION
Section 2
2.1 Controls and Indicators
2.1.1 Inverter Module Description
a
h
b
c
d
g
f
e
FIGURE 2:
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
Chassis physical description
Inverter On/Off switch: Switches the inverter on or off
Output Breaker: Trips to protect the inverter from hardwire AC output short
circuit or overload.
Branch Breaker: Trips to protect the inverter from GFCI outlet short circuit or
overload.
GFCI outlets: Two outlets, output power 120 VAC 60 Hz.
Field Wiring Compartment: DC input and AC output power connections are
made here. Remove the faceplate to access the field-wiring compartment.
Chassis Bonding Lug: Connects to vehicle chassis.
DC Input: Connects the DC cables from the batteries.
Control panel: See description on page 8
7
2.1.2 LED Control Panel Description
a
g
b
h
c
i
d
j
e
k
f
FIGURE 3:
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
LED Front Control Panel
External power: Not used.
Inverter power: The green LED indicates that the inverter is operating.
Low Battery: The red LED indicates a low battery voltage condition.
Overload: The red LED indicates an overload condition.
High temp: The red LED indicates a high internal temperature.
Push to test: Pressing this button enables the battery voltage LEDs.
28 – 30 VDC (Battery voltage): Green LED.
26 – 28 VDC (Battery voltage): Green LED.
24 – 26 VDC (Battery voltage): Green LED.
22 – 24 VDC (Battery voltage): Yellow LED.
20 – 22 VDC (Battery voltage): Yellow LED.
8
2.2 Support Items
2.2.1 General Overview
An inverter support system consists of all the equipment needed to supply DC power to
the inverter. On a land vehicle the support system can be divided into two main
categories depending on the size of the loads and their running time, these are: Light
duty applications and heavy-duty applications.
The typical support system in a light duty application of less than 2000 Watts of
constant power drawn for up to one hour, consists of an OEM engine battery with one
or two auxiliary deep-cycle batteries, the existing OEM engine alternator, and the
necessary cables and fuses. The batteries alone are able to power the loads without
running the vehicle engine.
In heavy-duty applications, the batteries alone cannot supply long-term power for large
loads. Ultimately, the energy must come from the engine alternator, and the vehicle's
engine will need to be running. In some cases the existing alternator is replaced by a
heavy duty high-output alternator, along with a high idler control device designed to
provide high 24 Volt current during high idle. Even with these special alternators and the
high idler control device, a large battery bank is typically needed to supply the balance
of 24 Volt current to the inverter. In some cases two alternators running in parallel are
necessary.
Engine Compartment
Alternator
Regulator
OEM
Battery
Hi-Idler
Control Box
Alternator
AC Out
DC In
Dimensions
Power Inverter
Auxiliary Battery
(Deep Cycle)
FIGURE 4:
Inverter Support Items Block Diagram
9
2.2.2 Deep Cycle Battery Theory
There are two categories of lead acid deep cycle batteries; wet and sealed. Sealed
batteries can be either gel cell or AGM (Absorbent Glass Mat) type. Deep cycle batteries
are designed specifically for repetitive charge and discharge cycles. These batteries are
also made to be discharged to a very low level before recharging. Their plates are
thicker than automotive starting batteries.
Deep cycle battery power capacity is rated in amp hours with a given discharge time
typically at 20 hours. A 100-amp hour battery will produce five amps for twenty hours
before it is exhausted. Automotive starting batteries are rated in cold cranking amps and
are not recommended for inverter applications.
We strongly recommend using auxiliary deep cycle batteries with your
Dimensions inverter. Do not use only the engine starting battery.
a) Wet Cell Batteries: Characterized by their relatively thick internal plates that are
alloyed with antimony. These batteries will gas when charging resulting in some water
loss. It is very important that the electrolyte level be checked frequently and filled with
distilled water when necessary.
b) Sealed Batteries: Can be either gel cell or AGM type and do not require periodic
electrolyte replenishment.
Sealed batteries will NOT tolerate overcharging
• Gel Cell Batteries: The chemical composition and construction of these batteries
are unique. The electrolyte is mixed with a silica material, which converts it into a
gelatin. This keeps the water and acid mixed and allows the battery to be used in any
position, as there is no liquid to run out. These are the safest for use indoors. They are
the least affected by temperature extremes (especially freezing.) Their tolerance for
being stored at low state of charge levels is excellent. Gel cell batteries do not require
maintenance, have low self-discharge rate and low internal resistance.
• AGM Batteries: These are lead acid, maintenance-free batteries and their
performance is similar to gel cell batteries. The liquid electrolyte has been absorbed into
fiberglass cloth mats between the plates. They have good deep cycle characteristics and
can be used in most positions. They are less affected by temperature extremes than a
wet cell type battery but are more sensitive than a gel cell battery. AGM batteries do not
tolerate storage at a low state of charge as well as a gel cell but will handle
overcharging slightly better. The charging characteristics are similar to gel cell batteries.
2.2.3 Battery Cable Assembly
Use stranded copper cable for the battery-to-inverter cable and for the battery-toalternator cable as indicated. An in-line fuse must be installed between the battery and
the inverter and between the battery and alternator. U.L. requires that the fuse be
within 18 inches of the battery.
Use SGX cross-linked polyurethane that complies with SAE J-1127 and vehicle
manufacturer requirements as well as high temperature insulation requirements
(135°C.) of SAE J-1127.
10
a) Battery-to-Inverter Cable: If furnishing your own battery-to-inverter cable see
figure 5 below, also see cable and fusing guide charts A and B in appendix section 6,
page 21 then follow these steps:
•
•
•
•
Locate your inverter model in chart A.
Estimate cable length (distance between the inverter and the battery) then choose
the appropriate length on chart A.
Using chart A, find the correct gauge of cable needed
Cross-reference the wire gauge found above to select the proper fuse size in chart B.
Using smaller battery-to-inverter cable or longer length will greatly degrade
inverter peak performance.
b) Battery-to-alternator cable: Determine your vehicle’s alternator output current.
If furnishing your own cable, see figure 5 below and also refer to chart C in Appendix
section 6, page 21 to determine wire gauge and fuse sizes.
Fuse
A
Fuse holder cover
B
B
Red cable (+)
18” max.
Fuse holder base
To batteries
To inverter DC input
A
Black cable (-)
Detail B
Detail A
3/8” Ring
To battery post
5/16” Ring
To fuse holder
FIGURE 5: Inverter Cable Assembly
11
INSTALLATION
Section 3
3.1 Inverter Components and Installation Tools
3.1.1 List of Inverter Components
Check your packing slip against the following chart; make sure you received all the
components listed.
Picture
Description and Part Number
Inverter module
24X26UVQ
3.1.2 Tools for Installation
Below is the list of useful tools required for the installation of the inverter
•
•
•
•
•
•
•
•
•
Connectors (butt type and insulated)
Cordless drill with bits and spare battery pack
Crimpers (for insulated and non-insulated connectors)
Digital Volt Meter with probes
Electrical Tape
#2 Phillips Screwdriver
3/8” Allen wrench, Socket Wrench
Wire cutters, Wire strippers, Cable ties, Tape measure
1/4” diameter screws.
12
Quantity
1
3.2 Mounting the Inverter
3.2.1 Mounting the Inverter Module:
The inverter mounting location should provide adequate ventilation and
clearance to maintain room temperature during operation. At least 1/2 inch of
clearance is required on all sides.
a) Locate a suitable, secure vertical or horizontal mounting surface as close to the
batteries as possible without being in the same airtight compartment.
b) If mounting the inverter on a vertical surface, it is recommended that the front
control panel be pointing down whenever possible.
c) Locate the keyholes at the rear of the chassis flanges and fasten them using ¼ inch
diameter screws. See figure 6, inverter footprints on this page below.
d) Let the inverter slide down over the keyholes. Tighten the screws.
e) Faston the screws through the front holes to secure the inverter.
3.2.2 Mounting the Battery Bank:
10.3 Battery Mounting:
Do not use vehicle-starting batteries; deep discharge cycles typical with inverter
applications can shorten the life of this type of battery.
a) It is recommended to mount the battery bank close to the inverter. The maximum
recommended distance between the inverter and the battery bank is 20 feet.
b) The battery compartment must be vapor-tight to the interior of the vehicle and
vented directly to the exterior.
c) Install several vent-plugs within one inch of the top of the battery compartment to
allow for ventilation. Install a ventilation assembly as needed.
d) Allow space around the battery and especially above the battery for inspection, and
maintenance purposes.
e) The battery should not be able to move more than 1 inch in any direction.
Heat sink
7.75
Dimensions
Power Inverter
Front
Note 1: All dimensions in inches
FIGURE 6:
Inverter footprint
13
3.3 Inverter Wiring
Reference figure 7, page 16 DC wiring and figure 8, page 17 AC wiring diagram.
3.3.1 Grounding: Connect an 8 gauge copper wire between the bonding lug located
at the right side of the chassis on the inverter and the earth grounding system of the
vehicle chassis. See figure 2, item (f) page 7.
3.3.2 Battery-to-Inverter Cable Assembly
An initial spark may result when connecting the final battery wire to the inverter
due to charging of the internal input capacitors.
Connecting the inverter with the DC polarity reversed to the battery will cause
damage that is not covered under the warranty.
a) Refer to Figure 7: DC wiring diagram.
b) Open the inverter field-wiring compartment to access the DC input lugs.
c) Unscrew the DC input lug POS (+) and NEG (-) 3/8” Allen screws.
d) Remove the fuse from the fuseholder for cable installation.
e) Remove 1 inch of insulation from the un-terminated ends of the red and black cables.
f) Insert the stripped end of the red wire into the DC input lug labeled POS (+) and the
stripped end of the black wire into the DC input lug labeled NEG (-). Tighten the 3/8”
Allen screws to 23 Ft. Lbs.
g) Tighten the cover DC cable strain relief screws to 1 Ft. Lb.
h) Connect the end of the short red cable to a POS (+) battery post.
i) Connect the terminated end of the black cable (neg. return cable) directly to a battery
NEG (-) post (DO NOT connect to the chassis).
j) Install the in-line fuse in the fuseholder that is within 18” of the positive post of the
battery bank (a one-time spark will occur when this final DC connection is made). To
determine the fuse size, refer to the Appendix.
3.3.3 Auxiliary Battery-to-Alternator or OEM Battery Cable Assembly
Do not use the vehicle chassis as a return path. Use the same wire gauge as the
positive cable to complete the connection.
a) Turn vehicle engine off.
b) Disconnect the cable from the vehicle battery negative post.
c) Remove the in-line fuse from the fuse holder located on the red or positive (+)
assembly wire.
d) Bolt the cable ends with ring terminals positive (+) and negative (-) to the vehicle
alternator output.
e) Using washers and nuts, place the assembly wire ring terminals to the appropriate
positive (+) and negative (-) auxiliary battery post.
f) Reinstall the in-line fuse into the fuse holder.
g) Reconnect the cable to the vehicle battery negative post.
h) To determine the fuse size, refer to the Appendix.
14
3.3.4 Remote On/Off Switch: An optional customer supplied remote On/Off switch
may be connected to the inverter and mounted at a convenient location. The remote
switch will operate only if the inverter On/Off switch on the face of the inverter is turned
on.
a) Remove the in-line fuse from the fuse holder located on the positive (+) battery to
inverter assembly wire.
b) Remove the front field wiring cover plate to access the wiring compartment. See
figure 2, item (e), page 7.
c) Remove the violet wire from the battery positive input terminal in the wiring
compartment marked “Remote Switch Hookup”.
d) Connect the violet wire to the load side of the On/Off remote switch.
e) Connect a fused (5 amp recommended) +24VDC battery voltage to the line side of
the switch. Use 18-gauge wire. The fuse should be mounted within 18 inches of the
battery.
f) Make sure the inverter switch is OFF before putting the in-line fuse back into the
fuse holder removed on step (a). A spark may result due to a capacitor charging.
g) Replace the front field wiring cover plate.
3.3.6 120 VAC 60Hz Output
Make sure the inverter and all AC loads are turned off when connecting the
inverter output lead wires to the loads.
Damage to the inverter will occur if an external AC power source is applied to the
inverter’s AC output.
(a) Make sure the inverter is turned off when removing the inverter faceplate to access
the field wiring compartment, see figure 2, item (e) on page 7.
(b) Locate the set of 3 output wires labeled “AC Output”: Black wire (Hot), White wire
(Neutral) and Green wire (ground). See figure 8, page 17.
(c) The AC hardwire output is not GFCI protected. GFCI outlets should be installed at all
appropriate locations per NEC 551. External GFCI outlets should be Leviton GFCI
#6599 or #8899 (15A).
(d) The AC output should be wired to a listed 30 amps breaker in a distribution panel
using 10-gauge wire.
(e) All remote AC outlets should be mounted at a convenient location in UL listed outlet
boxes.
15
Red cable (+)
+
Black Cable (-)
In-line Fuse
120 VAC, 60 Hz
Output
(See page 17)
To vehicle
alternator or
vehicle battery
Auxiliary
Battery
Customer
supplied remote
On/Off switch
Customer
supplied
Fuse
In-line Fuse
FIGURE 7:
DC Wiring Diagram
16
Field Wiring Compartment
White-Neutral
Black-Hot
AC
Output
Distribution Panel
30A
Breaker
15A or 20A
Breaker
15A or 20A
Breaker
15A or 20A
Breaker
Hot
120 VAC, 60Hz Output
If the inverter does not have the option
"A", then install GFCI outlets as required
by code.
Neutral Bus
Ground Bus
FIGURE 8: AC wiring diagram
17
Green-Ground
OPERATION
Section 4
4.1 Startup
4.1.1 General: After successful installation to operate the inverter do the following:
(a)
(b)
(c)
Switch the inverter front panel switch to ON. The Green LED “Inverter Power”
will come on.
If the optional customer supplied remote switch is used, the inverter is switched
ON or OFF by the remote switch. The inverte front panel switch and the remote
switch are in series. See page 15, section 3.3.4
Turn the switch to OFF when the inverter is not in use. There is a 1 to 2 amps
draw on the batteries from the inverter even when it is on, and there are no AC
loads connected to the inverter.
18
TROUBLESHOOTING
Section 5
Call Customer Service Department for free phone consultation during business (central
time zone) hours at: 1-800-553-6418 or 1-651-653-7000; fax number 1-651-653-7600;
e-mail: inverterinfo@Airpax.net
5.1 Inverter Troubleshooting:
5.1.1 Important Notes:
Since the inverter has a quasi-sine waveform a TRUE RMS voltmeter is required
for accurate AC voltage readings. Other voltmeters that use averaging circuitry
will give an incorrect reading.
5.1.2 The Red LED Warning Indicators: There are three Red LED lights; they are
Low battery, Overload and High temperature.
5.1.3 Inverter Troubleshooting Procedure:
a) Check that all the circuit breakers are reset, including the one on the front of the
inverter, see section 2.1.1 items (b) and (c), page 7.
b) Connect a 100-watt light bulb to the GFCI receptacle on the front of the inverter.
c) Set the inverter “On/Off” switch to ON and also the remote switch, if used.
d) Check the connection to the remote switch, if used, to ensure that +24 VDC is
present at the violet wire at the wiring compartment.
e) Observe the LEDs light coming on at front control panel. Follow the troubleshooting
chart on section 5.2, page 20.
19
5.2 Red LED Troubleshooting Messages
LED Light
PROBLEM
POSSIBLE CAUSE
Check the in-line fuses for continuity. Make sure
the DC wires are clean and tight. Check the DC
voltage at the inverter DC input. Check the
connection to the remote switch; +24VDC must be
present at the violet wire for the unit to operate.
1
No LEDs
The
inverter
is
not
connected to the batteries
or the battery voltage is
below 20 volts DC or fault
in the inverter remote
On/Off circuit.
2
Low battery
Indicates that the inverter Fault in the battery wiring, battery capacity and
has shut off due to a low voltage or the in-line fuse. The inverter must be
battery voltage condition.
turned off to reset the circuit.
3
Overload
Indicates that the inverter Output wiring or load that is shorted, loads that
has shut off due to an exceed the inverter rating or an internal fault. The
overload condition.
inverter must be turned off to reset the circuit. If
the condition persists, call Dimensions.
4
High temp.
Indicates that the inverter
has shut off due to high
internal temperature. The
unit will automatically turn
back on when it has cooled
to 40°C (104°F)
Verify that the inverter is in a vented compartment
and that the fan is not blocked.
High ambient temperatures combined with poor
ventilation may also contribute to the shutdown.
20
APPENDIX
Section 6
Chart A: Wire Gauge Recommendations
DC input wire gauge guide for 5% maximum DC voltage drop at full inverter output.
Inverter
Model
24X26UVQ
Full Load
(Amps)
130
Peak
(Amps)
540
Wire length from inverter to battery
1’ – 10’
11’ – 15’
16’ – 20’
2 Ga.
2 Ga.
1 Ga.
NR: Not Recommended
Note 1: Wire gauge is based on 1350C insulation; for lower temperature rated insulation
and/or applications inside engine spaces use next larger gauge.
Note 2: These wire gauge recommendations are minimum. For large motor loads and
other applications with high inrush currents, use a wire gauge 1 to 2 sizes larger than
shown and keep the wire runs between the battery and SPS as short as possible. Make
quality connections and use heavy gauge AC wiring to the loads.
Chart B: Fusing Recommendations
Note: Determine wire gauge from chart A, and then select the fuse from the table
below. Use Bussmann fuse type ANN-XXX (where XXX is the ampere rating of the fuse)
Wire
Gauge
8
6
4
2
1
1/0
2/0
3/0
4/0
Fuse Size
100
Amps
150
Amps
200
Amps
250
Amps
300
Amps
350
Amps
400
Amps
500
Amps
600
Amps
Fuse
Fuse holder and cover
Chart C: Charging cables & fusing guide
Alternator
Current Output
Wire Gauge
Fuse Size
OEM
100 Amps
2
250 Amps
130 Amps
2
250 Amps
OEM Upgrades
160 Amps
200 Amps
2
1/0
250 Amps
350 Amps
Note: If paralleling two alternators, add individual output currents.
21
200 Amps +
2/0
400 Amps
Chart D: Industrial Electrical Product Wattage Ratings
Product
Air Compressor, 1 HP
Air Compressor, 3/4 HP
Air Cond, 9,000 BTU
Air Cond, 13,500 BTU
Air Cond, 16,000 BTU
Air Cond, 18,000 BTU
Bucket (Basket) Heater
Cable TV 90 Volt Power Supply
Computer, Laptop
Drill, Large
Drill, Medium ½”
Drill, Small 3/8”
Engine Block Heater
Grinder
Hammer drill, light duty
(Hilti TE-504, TE-74, Te-704)
Hammer drill, medium duty
(Hilti TE-804, TE-805)
Hammer drill, med./heavy duty
(Hilti TE-905)
Impact Wrench
Personal Computer
Pipe Threader
Plastic Pipe Electro-fusion up to 8”
Plastic Pipe Fusion Irons
Prover, gas meter
Recharger, battery operated tool
Saws-All
Sewer camera w/lights
Sewer camera w/lights & crawler
Watts
(Full load)
2000
1500
1100
1620
1800
2200
1500
2000
100
1500
750
250
750
1500
120 VAC
Amps.
16
12.5
9.2
13.5
15
18.3
12.5
16.7
.83
12.5
6.3
2.1
6.3
12.5
1050
10.5
12X16U
Quasi-sine
1350
12.5
12X20U
Quasi-sine
1600
900
350
1800
3900
2400
14
7.5
2.9
15
32.5
20
240
720
2
6.0
12X25U Quasi-sine
12X20U Quasi-sine
12/600
Quasi-sine
12X25U Quasi-sine
12/3600N Pure sine
12X30U Quasi-sine
12/3000N Pure sine
12/400N Pure sine
12/1200 Quasi-sine
12/1200N Pure Sine
12/1800N to
12/3000N Pure Sine
12X20U Quasi-sine
12X20U Quasi-sine
12/3000N Pure Sine
12/300
Quasi-sine
12/130
Quasi-sine
12X20U Quasi-sine
12/300
Quasi-sine
Inverter Model
12X30U Quasi-sine
12X25U Quasi-sine
12X16U Quasi-sine
12X20U Quasi-sine
12X25U Quasi-sine
12X30U Quasi-sine
12X16U Quasi-sine
12/2400N Pure sine
12/400N Pure sine
12X25U Quasi-sine
12/1200 Quasi-sine
12/600
Quasi-sine
12/1200 Quasi-sine
12X25U Quasi-sine
Space Heater
1500
12.5
Sump Pump, 1/2 HP
1000
8.3
Thumper (electrical fault locator)
2500
20.8
TV, Color, 19”
200
1.7
VCR
25
0.2
Water Pump, Small
1000
8.3
Window Fan
200
1.7
Notes:
1. The power ratings listed above should be used for reference only.
2. To find the correct power consumption or “wattage”, multiply the AC voltage times
the amps listed on the product nameplate. In some cases, the wattage is listed on
the nameplate also.
3. Make sure your inverter is large enough to supply the appropriate wattage to loads.
4. Find out if the loads you are running are pure sine wave form sensitive. The inverter
output waveform is quasi-sine.
22
Chart E:
Battery Configuration:
Batteries interconnect in two ways: Series or parallel.
a) Series configuration: Increases voltage while keeping the Ampere Hour (AH) capacity
constant. For example: Two deep cycle 12 Volt batteries @ 105 AH each connected
in series, results in a total output of 24 Volts (12 Volts + 12 Volts) @ 105 AH
b) Parallel configuration: Increases capacity while keeping the voltage constant. For
example: Two deep cycle batteries 12 Volt @ 105 AH each connected in parallel,
results in a total output of 12 Volt @ 210 AH (105 AH + 105 AH).
Note: The amount of electrical energy in these two configurations is identical.
+
24VDC, 105 AH
-
+
a) Series Configuration:
Each battery is 12V – 105 AH
12VDC, 210 AH
-
b) Parallel Configuration:
Each battery is 12V – 105 AH
Chart F:
Useful Formulas
Ohm’s Law
Voltage (Volts) = Current (Amps) x Resistance (Ohms)
Power (Watts) = Voltage (Volts) x Current (Amps)
Chart G:
Sizing the Battery Bank
The first step is to estimate the total watts of load and how long the load is to
operate. Look at the input electrical nameplate for each appliance (see chart D, page
22) and adding up the total requirement can determine the total load wattage. Some
loads are not constant, so estimations must be made. An example is a full-size
refrigerator (750 watt compressor) running 1/3 of the time would be 250 watts per
hour. Also, the amount of time these loads are to operate from the inverter must be
decided.
After the load and running time are decided, the battery bank size can be
calculated. For a 24-volt inverter system, each 100 watts of load on the inverter
requires 5 amps DC from the battery, a 20 to 1 ratio.
An example of this calculation is:
1. Total = 1000 watts per hour
2. Watts from 24 volt battery = 1000 / 20 = 50 AH
Next the number of ampere hours (AH) must be multiplied by the time in hours that
the load is to operate. For example, the load is to operate 3 hours:
For a 24 volt system: 50 amps DC x 3 hours = 150 amp hour (AH).
During periods of heavy DC current draw, less than 100% of stored battery energy is
usable. A safe assumption is 50% usable energy. Therefore, to provide 150 AH of usable
energy a 300 AH capacity battery bank is required.
23
Chart H:
Waveform Discussion
Pure sine waveform electrical power is the world's standard waveform for the electrical
utility grid (see figure a below). This waveform is the naturally occurring waveform that
is emitted from a rotating electrical generator, so it was a logical decision to make this
the standard. This is commonly called alternating current or AC.
The other common type of electricity is direct current or DC, which is emitted from
batteries. A limited number of electrical products will operate from DC versus a large
number from AC. Inverters are devices that convert DC to AC electronically, or statically,
without the use of a rotating generator.
It is very difficult to produce a pure sine waveform electronically. The original inverters
produced a square waveform output that was cheaper and easier to produce. These
inverters are very limited in the equipment they will operate and are typically used for
resistive AC loads. They cannot be U.L. listed.
Newer inverters output a more usable waveform called quasi-sine waveform by
Underwriters Laboratory U.L. (see figure b below). Other names for this waveform are
modified sine wave, rectangular wave, or modified square wave. A correct version of
this quasi-sine waveform can be granted U.L. approval. This waveform can operate most
equipment and will not harm other U.L. listed equipment.
The newest inverters output pure sine waveforms (Figure a). These inverters will
operate any load within their power rating range, but usually do not have the motor
starting capability of quasi-sine inverters. There are several electrical products that
require a pure sine waveform to operate correctly. A partial list of them is provided
below. See chart D on page 22 also.
•
•
•
Microprocessor controlled tools and equipment
Phase controlled devices such as ceiling fan speed controls, incandescent lamp
dimmers, and power supplies.
Transformless capacitive powered devices such as DC tool battery chargers,
compact fluorescent light, and smoke detectors.
V
V
T
a)
T
Pure sine wave form
b)
24
Quasi-sine wave form
GLOSSARY
Section 7
AGM: (Absorbent Glass Mat) A lead-acid battery that incorporates a sponge glass mat
separator to immobilize the electrolyte. Because of the immobilized electrolyte, AGM
batteries will not leak or spill.
Alternating Current: Pulsating electric energy in which the direction of the electron
flow is rapidly changed, so the end terminal becomes in rapid succession electrically
positive, then negative. Abbreviated AC.
Alternator: Alternating current generators (alternators) produce alternating current
that is "rectified" (converted into direct current) before it can be used in an automobile.
Ampere: The unit of electrical current equal to the steady state current produced by
one volt applied across a resistance of one ohm, abbreviated Amps.
Ampere Hour: A measure of the quantity of electricity, being one ampere for one hour.
It is used to express battery capacity. It is obtained by multiplying the current in
amperes by the length of time that the current is flowing, abbreviated AH.
Current: The time rate of flow of electricity, normally expressed as amperes, like the
flow of a stream of water.
Deep Cycle Batteries: Batteries that are designed to withstand repetitive
discharge/recharge cycles and continue to provide their rated capacity.
Direct Current: A one-direction electron flow. Abbreviated DC.
Discharge: Conversion of a battery's chemical energy into electrical energy.
DUI: Dimensions Unlimited Inc.
Electricity: The flow of electrons through conductive materials and devices.
Flooded: Describes a type of lead-acid battery filled with liquid electrolyte and vented
to the atmosphere.
Fuse: A component of a circuit placed in series and designed to melt "open" at a
specific level of current. Fuses protect wires from overheating.
Gassing: Bubbles from gases being released at one or more of the electrodes during
electrolysis.
Gel Cell Battery: A lead-acid battery in which the electrolyte is immobilized by adding
a gelling agent. This battery has the advantage of being non-spillable. A gel cell
battery is totally sealed, valve regulated, with no possible access to the cells.
Hydrometer: A device used to measure density or specific gravity of electrolyte
solutions.
Lead-Acid Battery: A storage battery using lead (Pb) and lead peroxide (PbO2) as the
"active" materials and an electrolyte solution of water and sulfuric acid (H2SO4). A
storage battery changes chemical energy into electricity.
Ohm: A unit of electrical resistance.
Ohm's Law: An equation that expresses the relationship between voltage, current and
resistance in an electrical circuit.
The equation can be expressed as follows: Volts (V) = Amps (I) X Ohms (R).
Ohmmeter: An instrument used to measure resistance in an electrical circuit.
25
Open Circuit Voltage: The voltage at a battery terminal when no appreciable current
is flowing.
Polarity: The quality of an object characterized by two opposite charges, as in the
positive and negative poles of a battery.
Pure sine wave: World’s standard waveform for the electrical utility grid. This
waveform is the naturally occurring waveform that is emitted from a rotating electrical
generator.
Quasi-sine wave: An electronically generated waveform that looks like a modified
square waveform. It is also called a rectangular waveform.
Resistance: The opposition of a conductor to the passage of an electrical current,
usually expressed in ohms.
Specific Gravity (S. G.): The specific gravity of battery electrolyte is the weight of the
electrolyte compared to the weight of an equal volume of distilled water.
State of Charge: The amount of electrochemical energy left in a battery.
Volt: The unit of measurement of electromotive force. The force required to send a
current or one ampere through a conductor with a resistance of one ohm.
Voltmeter: The meter used to measure the amount of voltage in a circuit.
Watt: The unit of measurement for electrical power. The algebraic symbol is "W".
Waveform stabilizer: A circuit designed to absorb reflected power from a reactive
load, such as motors.
26
LIMITED WARRANTY
Section 8
SHIPPING TERMS:
F.O.B. St. Paul Minnesota. Freight prepaid and billed, subject to prior credit approval.
MINIMUM ORDER:
$50.00 Net Price
LOSS OR DAMAGE:
Loss or damage in transit is the responsibility of the carrier. Any claim should be filed with
the delivering transport company. Invoice, Bill of Lading and Delivery receipt with damage noted therein must
accompany any claims for freight damage. Claims for shortage and lost shipments must be made in writing to Airpax
Dimensions, St. Paul, MN within 10 days of date of shipment. Claims not reported within this time frame will not be
honored.
PRICES: Prices are subject to change without notice. All orders are subject to acceptance at the factory. We reserve
the right to invoice prices in effect at time of shipment.
TERMS: Net 30 days with approved credit, credit card or C.O.D.
RETURN GOODS POLICY
•
•
•
•
•
•
No returned materials will be accepted without an accompanying Returned Materials Authorization Number (RMA)
from factory.
Credit will be issued for returned goods to the original purchaser within 60 days of purchase, provided the inverter is
returned to Dimensions unused and not mounted. The amount of credit will be issued at Dimensions discretion
based on the condition of the product.
Customer must be in good standing with Dimensions.
Inverters that are discontinued, high-voltage (over 24vdc), special-order or used are excluded and will not be eligible
for credit. Non-inverter items such as cable assemblies, fuses and fuse holders, will not be eligible for credit
Support components supplied by Dimensions vendors will be covered under that manufacturer’s credit return policy.
Customer pays return freight.
PLEASE SHIP FREIGHT PREPAID AUTHORIZED RETURNS TO:
Airpax Dimensions, Inc. / 4467 White Bear Parkway / St. Paul, MN 55110
LIMITED WARRANTY:
Dimensions warrants to the original purchaser for use that the goods or any component
thereof manufactured by Dimensions will be free from defects in workmanship for a period of 1 year from the date of
purchase, provided such goods are installed, maintained and used in accordance with Dimensions and the original
manufacturer’s written instructions.
Components not manufactured by Dimensions, but used within the assembly provided by Dimensions, are subject to the
warranty period as specified by the individual manufacturer of said component, provided such goods are installed,
maintained and used in accordance with Dimensions and the manufacturer’s written instructions.
Dimensions sole liability and the Purchaser’s sole remedy for a failure of goods under this limited warranty and for any
and all claims arising out of the purchase and use of the goods, shall be limited to the repair or replacement of the goods
that do not conform to this warranty. The return of the purchase price in cash is at the sole discretion of Dimensions.
To obtain repair or replacement service under the limited warranty, the purchaser must contact the factory for a Return
Material Authorization (RMA). Once obtained, send the Return Material Authorization Number along with the defective
part or goods to: Airpax Dimensions, Inc., 4467 White Bear Parkway, St. Paul, MN 55110, freight prepaid.
THERE ARE NO EXPRESS WARRANTIES COVERING THESE GOODS OTHER THAN AS SET FORTH ABOVE. THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED IN DURATION TO ONE
YEAR FROM DATE OF PURCHASE.
DIMENSIONS ASSUMES NO LIABILITY IN CONNECTION WITH THE INSTALLATION OR USE OF THE PRODUCT, EXCEPT
AS STATED IN THIS LIMITED WARRANTY. DIMENSIONS WILL IN NO EVENT BE LIABLE FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES.
WARNING: LIMITATIONS ON USE: Dimensions products are not intended for use in connection with Life
Support Systems and for Avionic use. Dimensions makes no warranty or representation in connection with their products
for such uses.
27
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