Subaru Robin Power Products R600 manual Efficiency

9-l-4 IN THE SITUATION THAT POWER CONSUMPTION IS NOT SHOWN ON THE RATING PANEL:

Occasionally. the rating panel of an electric appliance does not carry its power consumption but only shows the mechanical equivalent to the power consumption. In such a situation. it is necessary to calculate the power consumption of the device involved. Depending on the types of load. the calculated power consumption is adjusted according to paragraphs 9-l-l through 9-I-3 above.

(Power consumption) = (Mechanical equivalent of device) + (Efficiency)

Efficiency

Motors:

0.6 -

0.8

Fluorescent

lamps:

0.7 -

0.8

Example :

A 4OW

fluorescent

lamp with a lighting output

of 40W and assuming that the power consumption of this lamp is

0.7, the power consumption is calculated as follows:

40 + 0.7 = 57W

Further, as per paragraph 9-l-2, the said power consumption is multiplied by a factor of 1.2 to 2. producing a

power consumption of 70 to 11SW. Therefore. with this generator, four to seven40W fluorescent lamps can be

used.

Example:

In the case of

a 2OOWmotor. the mechanical equivalent of the motor

is 200W.

Assuming that the efficiency of

the motor is 0.7. the power consumption is calculated as 200 f 0.7 = 285W. Similar to the above, the calculated

power consumption is then multiplied as per paragraphs 3-1) or 3-2). taking into account the types of motor

and starting

conditions. The table below shows the range of loads applicable to this generator.

Range of workable

loads

Electric

devices

I

50 Hz

60 Hz

Incandescent

lamp,

electric

heater,

etc.

up

to

4oow

up

to

5oow

I

Fluorescent

lamp,

mercury

lamp,

etc.

Up

to

approx.

300W

Up

to

approx.

400W

I

Motor-driven

tools

etc.

I

Up

to

approx.

300W

Up

to

approx.

350W

Pump

and compressor

drive

motors

I

Up

to

approx.

150W

/

Up

to

approx.

200W

Table

9- 7

NOTE 7: With motor-driven tools and the motor-driven pumps and compressors specified in paragraphs 9-7-3 and 9-l-4, the generators of the said capacities are required only when starting the motors of the

respective appliance. Once the motor has started, the power which the generator is required to

supply to the motor decreases thereafter to a level approximately 1.2 to 2 times the rated power

consumption .

Therefore, the surplus capacity of the generator may be used for other electric appliances.

NOTE 2: As for the motor-driven devices specified in paragraph 9- 7-3 and 9-l -4, the power requirement for starting varies according to the types of motor and the load conditions at time of starting.

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