Vector VEC550POB Owner's Manual & Warranty - page 8
8
DETERMINING BATTERY CAPACITY FOR EXTENDED RUN TIMES.
I
nverters must be supplied with a constant source of high current 12 volt DC from a
battery or bank of batteries. To determine the minimum battery size that you will
need to operate appliances from the inverter without a generator or alternator
charging the battery, follow these steps:
1.
Determine the wattage of each appliance and/or tool you will need to
simultaneously operate from the inverter. Read the labels on the
equipment to be operated. Usually, power consumption is shown in watts.
If it is shown in amps, multiply by 120VAC to determine wattage.
2. Estimate the number of hours the equipment will be in use between battery
recharges.
3. To determine the total watt-hours of energy use, multiply the total running
time, by the average power consumption. To get an estimate of the current
(in amps) that the battery must be capable of delivering, divide the watt
hours by ten (10). Example: 250 watts for one hour is 250 watt-hours. Then
250 divided by 10 is 25 amp hours. Generally, battery capacity should be
rated at least twice the calculated amp hours.
MOUNTING THE INVERTER
The inverter should be mounted and close to the battery supply as safe from engine
fumes, explosive gas, and high temperatures. The inverter must have nonrestrictive
airflow to maintain adequate cooling. Use appropriate screws or other means to
fasten the inverter to a shelf, floor, wall, etc. Make sure that no damage results to fuel
or electrical lines that may be behind any sheet metal surfaces. After mounting
the inverter, carefully follow the cable path to the battery by using the length of string.
Using the measurement from the string, add 6” to the end of each cable. Inverters
should be mounted horizontly not vertically.
CONNECTING TO DC SUPPLY
CAUTION:
Ensure that DC connection polarity is correct. Reversed polarity will blow a fuse and
may cause permanent damage to the inverter. The manufacturer's warranty does
NOT cover damage due to reversed polarity. Review Figure 2, if necessary,
to identify the location of the DC terminals and their polarities.
WARNINGS:
DIRECT CONNECTION OF THE POS CABLE TO THE POS BATTERY
TERMINAL MUST BE PROTECTED AGAINST SHORT CIRCUITS. FOR THIS
INVERTER USE AN 300 ANL FUSE AND FUSE HOLDER.