Subaru Robin Power Products RGX5500, RGX3500 manual The smaller the motor, the lower the efficiency

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(5) Appliances without any indication & t& -&&ver consumption

Some appliances have no indication as to power consumption; but instead the work load (output) is indicated. In such a case, power consumption is to be worked out according to the numerical formula mentioned below.

(Output of electrical appliance) = tPower consumption~ (Efficiency)

Efficiencies of some electrical appliances are as follows:

Single-phase motor * - * * . * * - - - * * . . * - * 0.6 - 0.75 Three-phase motor * * - . * - - * * - - - - - - - 0.65 - 0.9 II-

Fluorescent lamp * . - . . * * * * - . * * . * * . * - 0.7 - 0.8

The smaller the motor, the lower the efficiency.

Example 1: A 40W fluorescent lamp means that its luminous output is 40W. Its efficiency is 0.7 and accordingly, power consumption will be 40 + 0.7= 57W. As explained in item(2), multiply this power consumption value of 57W by 1.2 - 2 and you will get the figure of the necessary capacity of a generator. In other words, a generator with a rated output of 1OOOWcapacity can light nine to fourteen 40W fluorescent lamps.

Example 2: Generally speaking, a 400W motor means that its work load is 400W. Efficiency of this motor is 0.7 and power consumption will be 400 f 0.7= 57OW. When this motor is used for a motor-driven tool, the capacity of the generator should be multipled by 1.2 to 3 and 570W as explained in the Item(3).

MODEL

Frequency

lncandesent lamp, heater, etc.

Fluorescent lamp, mercury lamp, etc.

Motor-driven tool, general-purpose motor, etc.

Water pump, compressor, etc.

RGX1800

50Hz 60Hz

								4400w	4800W
	approx.		approx.	approx.	approx.	approx.	approx.	approx.	approx.
I 9oow		I 1OOOW		1lOOW	13oow	17oow	2ooow	2800w	3200W
	approx.		approx.	approx.	approx.	approx.	approx.	approx.	approx.
I	800W	I	9oow	1ooow	12oow	15Oow	18OOW	2600W	2900w
	approx.		approx.	approx.	approx.	approx.	approx.	approx.	approx.
I	4oow	I	450w	5oow	600W	750w	9oow.	13oow	14oow

Tab/e 7-1

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