AIMS AIMS Power PWRI150048S User Manual - Page 4

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6. Battery

1). Voltage and current of the battery

The battery is designed to supply the unit with DC input voltage and the rated

voltage should be in accordance with the rated input voltage of the inverter.

Any voltage exceeding the range of the input voltage of the inverter will

cause over voltage or under voltage protection.

In the meantime, the battery should supply sufficient current. A small

capacity battery cannot drive a large power electrical appliance. In this case,

the battery will cause an under voltage protection because of the over-

discharge of the battery. The simple calculation method of battery current is:

load power divided by battery voltage. Due to the consumption of the inverter

itself, the actual current will be about 10% larger. For example, the voltage of

lead acid battery is 12VDC, and load power is 1000W, therefore, the actual

current of the battery is about 1000W 12V 110% 91.6Adc.

2). Battery operating time

Battery operating time depends on battery capacity and current, and the calculation

formula of operating time is: battery capacity divided by current, that is, battery

capacity divided by the value of the load power divided by battery voltage times 110%.

For example, battery specification is 12V, 2000Ah, load power is 1000W, so the total

discharging time is 2000Ah

(1000 12 110%)

Notice: The result of the formula above is on the basis of discharging rate of 20 hours

of the battery, that is, the result is from the discharging current of 2000Ah battery not

to exceed 100A. When the charging current exceeds this value, the discharging period

will be reduced. And the capacity of the battery may also influence the result. See the

specification of the battery manufacturer for more detailed information.

7. Connection

1) Grounding

The power inverter has a terminal on the rear panel marked " Grounding "or "

This is used to connect the chassis of the power inverter to ground. The ground

terminal has already been connected to the ground wire of the AC output receptacle

through the inverter.

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

21.8 hours

The chassis of the vehicle. In a boat, connect it to the boat's grounding system. In a

fixed location, connect the ground terminal to earth.

Warnings:

Make sure to tighten all connections. The ground wire must be 14AWG (2.08 mm )

or even larger.

Do not operate the power inverter without connecting to ground. Electric shock may

result.

2) Connect to the lead acid battery or other types within dc input range

(1) Please check all the safety precautions before connecting, and then check whether

the battery voltage is in accordance with the input voltage of the inverter. Battery and

inverter voltages must match

(2) The connecting wire must bear enough current. Depending on the table below,

please choose the input DC wire or larger.

Rated voltage

Max. current

Current Max.

of inverter

Load power

of wire

12V

1500W

150A

24V

1500W

75A

48V

1500W

37.5A

Notice:

(1) The table above is only for your reference. In practice, the thick wire can be

replaced by two thin parallel wires if the total cross-sectional area 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, you can increase the cross-sectional area or reduce the length of the lead.

(3) Connect cathode wire of the battery to the cathode terminal (black) on the rear

panel of inverter and then connect the anode wire of the battery to the anode terminal

(red) on the inverter, and tighten them.

Warnings:

(1) Please wear eye protection and work clothes when working around the battery to

protect your eyes and skin from acid and corrosive objects.

Specification of wire

(cross-sectional area)

(Length=1m)

(Length=N m)

4AWG (21.15mm)

N 21.15mm

7AWG (10.55mm)

N 10.55mm

10AWG (5.26mm)

N 5.26mm