Denyo DCA-600P, Instruction Manual

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3-2 Connecting the load
3-2-1 Precautions in connecting the load
• The switchgear, switching equipment, load and generator in the plant must be connected in
compliance with local codes of low voltage power installation (1000 or less).
• Before starting or before connecting a new load, make sure that the generator is earthed.
Use the earthing rod or, if effective, use an existing earthing installation. Any protective devices
against electric shock and leakage would be useless if earthing is poor.
• Avoid overloading the generator. The generator is provided with circuit breakers for overload
protection when a breaker has tripped, reduce the concerned load before restarting.
• Never connect the generator output voltage to an installation which is also connected to a
commercial power supply.
• Before connecting a load, turn off the corresponding circuit breaker, and check whether
frequency, voltage and power factor comply with the ratings of the generator.
• Distribution board
If the outlets provided on the machine are insufficient, provide an auxiliary switchgear and
connect it with the output terminals. The distribution board must comply with the local rule of
power installation.
• Be sure to provide a load ON/OFF switch between the power outlets and load. Do not use the
generator circuit breaker to turn on/off the load.
• Before connecting the load, stop the engine and turn off the generator circuit breaker.
• The load connecting cable must not get in contact with other output terminals on the terminal
board.
3-2-2 Non-linear and sensitive loads
Non-linear loads draw currents with high contents in harmonics causing distortion in the wave form
of the voltage generated by the synchronous generator.
In general, non-linear type loads generate a high frequency current which adversely affects the
performance of inverters used to feed power voltage to variable speed motors or loads such as
thyristor/rectifier controlled UPS.
Loads most sensitive to voltage distortion include incandescent lamps, discharge lamps,
computers, X-ray equipment, audio amplifiers and elevators.
Consult your sales distributors for measures against the adverse influence of non-linear and
sensitive loads.