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1-4-3 Generator controls and indicators
7. Frequency meter
This meter indicates the frequency of the outputted voltage. Make sure that it reads
50Hz when running.
8. Ammeter
This meter indicates the current going to the connected load. It must not exceed the
rated current.
9. Voltmeter
The voltmeter indicates the outputted line voltage.
10. Three-phase circuit breaker
The circuit breaker is a safety device interrupting the mains when an overload, a short
circuit or a leakage occurs at the load side connected to the receptacles. It also serves
as a main switch for supplying energy from the generator to the load connected to the
output receptacles.
Do not use this circuit breaker to turn on or off the load.
When tripped, the breaker must be reset manually by switching it to OFF and then to
ON after eliminating the cause of the trouble.
11. Earth leakage relay
DANGER: Electric shock by leakage.
• Be sure to connect the machine to earth. If not connected to earth, the earth leakage
relay would not work.
• Be sure to connect the load also to earth.
• This relay detects a leakage and trips the mains of the three-phase circuit breaker.
The earth leakage relay sensitivity is 30mA. At this time, the red lamp lights
indicating a leakage occurrence. Eliminate the cause of the leakage, press the reset
button, turn the tripped circuit breaker manually to OFF and then to ON.
12. Ammeter change over switch
The switch allows measuring the outgoing current between each of the phases and
also switching the meter off.
13. Voltage regulator knob
The output voltage is controlled by a regulator with rotating knob. Turning clockwise
increases the voltage and vice versa.
1-5 Noise
CAUTION: Injury of ears
In room or environment where the sound pressure level reaches or exceeds 90dB(A),
use ear protectors.
The maximum sound pressure of the machine is the value specified in EN 31201.
• Model DCA-70………. ..93dB(A)
• Model DCA-125………. 93dB(A)
• Model DCA-180………. 95dB(A)
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