10 | SAMLEX AMErICA INC.
SAMLEX AMErICA INC. | 11
The power rating of inverters is specified as follows:
• Maximum Continuous Running Power Rating
• Starting Surge Power Rating
Please read details of the above two types of power ratings in Section 1.2 under “DEfINITIONS”
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The manufacturers’ specification for power rating of AC appliances and devices indicates
only the Maximum Continuous running Power rating. The Starting Surge Power
required by some specific types of devices as explained above has to be determined by
actual testing or by checking with the manufacturer. This may not be possible in all cases
and hence, can be guessed at best, based on some general rules of Thumb.
Table 1.6 provides a list of some common AC appliances / devices that require high Starting
Surge Power. An “Inverter Sizing factor” has been recommended against each which is a
Multiplication factor to be applied to the Maximum Continuous running Power rating (Active
Power rating in Watts) of the AC appliance / device to arrive at the Maximum Continuous
running Power rating of the inverter (Multiply the Maximum Continuous running Power
rating (Active Power rating in Watts) of the appliance / device by recommended Sizing factor
to arrive at the Maximum Continuous running Power rating of the inverter.
tAbLe 1.6 inVerter SiZing FACtor
type of Device or Appliance
inverter Sizing Factor
(See note 1)
Air Conditioner / refrigerator / freezer (Compressor based)
5
Air Compressor
4
Sump Pump / Well Pump / Submersible Pump
3
Dishwasher / Clothes Washer
3
Microwave (where rated output power is the Cooking Power)
2
furnace fan
3
Industrial Motor
3
Portable Kerosene / Diesel fuel Heater
3
Circular Saw / bench Grinder
3
Incandescent / Halogen / Quartz Lamps
3
Laser Printer / Other Devices using Infrared, Quartz Halogen Heaters
4
Switch Mode Power Supplies (SMPS): no Power factor correction
2
Photographic Strobe / flash Lights
4 (See Note 2)
NOTES FOR TABLE 1.6:
1 Multiply the Maximum Continuous Power Rating (Active Power Rating in Watts) of the appliance
/ device by the recommended sizing factor to arrive at the Maximum Continuous Running Power
Rating of the Inverter.
2 For photographic strobe / flash unit, the Surge Power of the inverter should be > 4 times the
Watt Sec rating of photographic strobe / flash unit.
SECTIOn 1 |
Safety Instructions & general Information
