Troubleshooting guide

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Multiquip Inc. ◦ DCA Generators Troubleshooting Guide ◦ Manual No. DCATRBLSHOOT
G
G
E
E
N
N
E
E
R
R
A
A
T
T
O
O
R
R
G
G
L
L
O
O
S
S
S
S
A
A
R
R
Y
Y
A
W
kW
vA
kVA
=
=
=
=
=
Amps
Watts
Kilowatts
Volt amps
Kilovolt amps
1 Ø
3 Ø
V
dB
Hz
=
=
=
=
=
Single Phase
Three Phase
Volts
Decibels
Frequency (hertz)
Phase
-
Single Phase Power (typically 120V AC or 230V AC depending on the country) is carried
between two wires: live and neutral and sometimes a third ground wire for safety. The
frequency of AC voltage is 50 or 60 Hz depending on the country. Single-phase power is used
in very many applications, for example to power all typical home electrical appliances you use
single-phase power from a normal electrical outlet at home.
Three Phase Power is very common and is a more efficient use of conductors. Voltage is
carried through three conductors 120° out of phase with the other two. Three-phase power
provides a more efficient means of supplying large electrical loads like motors, and is used
more in industrial areas.
PMG - Permanent Magnetic Generator: Eliminates the excitation losses in the rotor, which
otherwise typically represent 20 to 30% of the total generator losses. It also gives a lower
temperature rise in the generator.
Rheostat - A continuously variable electrical resistor used to regulate current.
Voltage - the rate at which energy is drawn from a source that produces a flow of electricity in a
circuit. Expressed in volts (V)
Voltmeter - This feature serves as a convenient diagnostic tool on the jobsite. The operator
can quickly tell whether or not the generator is producing the correct voltage and prevent
overheating of tools and equipment.
Watt – An international system unit of power equal to one joule per second, the power
dissipated by a current of 1 ampere flowing across a resistance of 1 ohm.