Determining Maximum Appliance Wattage; Configuring The Battery Bank - Wagan Tech ProLine 2007-2 Manual De Usuario

ProLine 3000W Power Inverter by Wagan Tech
™
REAR PANEL
Negative (−) DC
Input Terminal
Ground
Terminal
High-Speed Cooling Fans
Two high-speed fans keep the internal temperature of the inverter within operating limits.
Negative DC (−) Input and Positive DC (+) Input Terminals
DC input terminals are used to connect the inverter to heavy duty cables from the battery or
battery bank. For connection information, refer to the sections on installation.
Ground Terminal
This connection is located on the lower left of the rear panel. It is for attaching a 6 gauge
insulated safety ground wire. This safety wire is for protecting personnel if there is an
unlikely failure in either the cabling or enclosure insulation. Do not directly connect this
ground connection to the negative DC terminal. This safety wire is to be connected to the
vehicle frame or earth ground. This is described in the installation procedure.
PLANNING THE INVERTER SYSTEM
Any large wattage inverter system requires planning before installation. There are several
steps to the planning process so the user must determine the following:
• Maximum inverter wattage required
• Operating time (run time) needed between battery recharges
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High-Speed
Cooling Fans
Positive (+) DC
Input Terminal
User's Manual—Read before using this equipment
• Battery bank capacity in amp-hours
• Charger requirement to charge batteries within a practical time.
• Distance between battery bank and inverter.

DETERMINING MAXIMUM APPLIANCE WATTAGE

Maximum AC appliance wattage is the first factor in planning battery and charging systems.
Some background: Large microwave oven specifications list cooking power (watts) and
appliance power. Appliance power is the AC load the inverter has to supply.
Most other electrical tools, appliances and audio/video equipment have labels that list the
unit's power requirements in watts. If the tool or device is rated in amps, multiply the amps
by 115 (115V AC) to determine the watts. For example, a power tool rated at 4 amps will
draw 460 watts.
Determine the wattage of each appliance you need to simultaneously operate. Add all of
the appliance wattages to obtain an estimated "total watts" number. Remember to consider
the startup surge that motorized appliances will cause. Do not exceed the surge rating of this
inverter (6000 watts). This can cause immediate an overload shutdown.
At 3000 watts continuous output, this inverter requires a DC power supply (battery bank)
that can continuously supply 300 amps at 12V DC for the duration of the run time.

CONFIGURING THE BATTERY BANK

To determine the minimum battery ampere-hour rating that you will need to operate
appliances from the inverter, and any DC appliances powered by the battery bank. Follow
these steps:
1. List the maximum continuous wattage that the inverter has to supply.
2. Estimate the number of hours the appliances will be in use between battery recharges.
This will vary depending on appliances. For example, a typical home use coffeemaker
draws 500 watts during its brew time of 5 minutes. It maintains the temperature of the
pot, requiring 100 watts. Typical use of a microwave oven is only for a few minutes.
Some longer operating time appliances are lamps, TVs, computers and refrigerator/
freezers.
3. Determine the total watt-hours of energy needed. This is done by multiplying average
power consumption in watts by hours of run time. For example: 1500 watts for 10
hours = 15,000 watt hours.
4. To get an estimate of the maximum current (in amps) that a battery bank must be
capable of delivering to the inverter, divide the load watts by ten. For example a 1500
watt appliance load will need 150 amps at 12 volts DC.
5. Using the 1500 watts (or 150 Amps) for 10 hours example as above, then 150 amps
is needed for 10 hours. This provides us with the basic amp-hours (AH) of battery that
is required. Ten hours at 150 amps equals 1500 amp-hours (AH). This answer is just a
beginning because there are additional factors that determine actual run time. These
include:
• AC appliance load and time in use (basic AH)
• Cable gauge and length (cable losses)
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