Giandel PS-300C User Manual Download Page 4

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F. USING THE POWER INVERTER

1. Check the output voltage and capacity of the battery. The battery (s) should match the voltage of the

inverter and have enough capacity for the load.

2. Insert the cigarette plug into the car cigarette socket and ensure well connected.
3. Press the power switch button on your inverter and a green LED will light up indicating that the inverter

is on.

4. Before plugging anything into your inverter, make sure the appliance you are trying to power is shut OFF,

then plug it into the AC outlet of your inverter and power on your appliance.

5. Once finished using the inverter, turn off your electrical appliance and the inverter. The indicator lights

should be off.

Warning:

The car cigarette outlet usually has current limit requirements. It is suggested that the continu-

ous load power should not exceed 100W when the original cigarette holder is supplied, otherwise the car
built-in fuse may be burned. If more power requested, a special cigarette outlet should be supplied to
connect directly from battery.

6. The inverter provides dual USB ports and stable 5V DC to the external device, the total maximum current

is 4.8A, and the maximum output current of a single USB port is 2.4A, which can directly supply or
charge a portable device with a USB interface. USB ports built-in automatic charging identification IC,
support various charging protocols.

G. BATTERY OPERATING TIME

Battery operating time depends on battery capacity and load. The formula for operating time is: battery

capacity divided by the value of the load divided by battery voltage times 110%. For example, using the

numbers from above, the battery specification is 12V,2*100Ah capacity and the load is 300W. Take

battery capacity 200Ah*12/ 300 ≈8 hours of run time if you fully deplete the battery. This is NOT
recommended. Deep cycle batteries last longer when they are only depleted to 50% of capacity

H. SOFT START TECHNOLOGY

The soft start technology built into this inverter protects the unit from delivering too much AC power at
once by gradually increasing the AC voltage pushed out. To make sure that you are utilizing this feature,
turn on the appliance being used before turning on the inverter. This is especially necessary for
equipment that has an inductive load or electrical motor.

I. OUTPUT VOLTAGE AND WAVE FORM

The output wave form for this inverter is Pure Sine Wave, which is much like even more pure than the
one from utility-supplied AC electricity; pure sine wave is applicable in lots of loads, such as Linear
Adaptor, switching power supply, transformer, motor and so on.
Comparing with Modified wave form, for inductive loads such as refrigerator and electric fans, pure sine
wave form can improve its power factor and the battery use ratio and reduce effectively working noises
from appliances. For sensitive loads such as adapter of lap-top, pure sine wave can low down the rush
current at working and reduce interferences to increases reliability and the life of the product.

J. Protection Features

1. Input under-voltage alarm: When the input DC voltage is lower than 9.8V, the buzzer will whistle intermit-

tently to remind that the inverter will go into the under voltage protection. Pay attention to save the data
if you are using computer.

2. Under voltage protection: The inverter will automatically shut down when the input DC voltage is lower

than 9.5V. The buzzer will whistle continuously and the green light is off, red light is on. Please turn off
the inverter and use it after recharging the battery.

3. Over voltage protection: The inverter will automatically shut down when the input DC voltage is higher

than 16V.The buzzer will whistle continuously and the green light is off, red light is on. Please turn off the
inverter and adjust the input voltage to the admissible range.

4. Overload protection: The inverter will automatically shut down when the load is higher than the rated

power. The buzzer will whistle continuously. Turn off the inverter and resume to normal operation after
taking away the excessive load.

5. Short-circuit protection: The AC output will be automatically shut down when short circuited. It will

automatically reset after the problem is solved.

6. Thermal protection: The unit will get hot during operation. If the temperature is higher than 65

℃

, the

inverter will automatically shut down. Then the buzzer will whistle continuously and the green light is off,
red light is on. Please turn off the inverter, and continue using it after the temperature goes back to
normal naturally. Meanwhile find out the factors causing the fault, such as ventilation, ambient tempera-
ture, vent, load power and so on. It can avoid similar things from happening again.

K. HOW TO CHANGE FUSE

1. Firstly disconnect the inverter and external batteries, solar panels, load etc all the connections.
2. Unscrew the side plate screws and pull out the bottom plate.
3. Use pliers to clamp car fuse inside the product, and pull out.
4. Replace the same specifications of the car fuse, and then install the bottom and side panels, and screw

well.

English

AC outlet

Power Indicator

USB ports

● Do not use it when the battery is charging

● Check the rated voltage of the battery and make sure

that it is in the allowable range of�the input voltage.

● Cut off the load and let it cool naturally for 10 to 30

minutes.

● Restart it after it resumes to normal temperature. Reduce

the load. avoid blocking the vent and improve the