What Is the Cause of Under Voltage in Diesel Generator?
by Starlight Generator dieselgeneratortechLow voltage of diesel
generator will affect the use of generator set, which is one of the common
faults.
1. The unstable speed of
the engine causes the unstable voltage of the generator set.
2. If the load on the
generator set is too large, the voltage will be unstable.
3. The damage of the
voltage regulator components of the generator causes the unit’s voltage
instability.
4. The poor circulation
of the fuel pipe of the genset causes the unstable speed of the engine, which
causes voltage instability.
1. If the contact
surface of generator brush is too small and the voltage caused by poor contact
is too low, it is necessary to check whether it is caused by the commutator
surface, if it is, at low speed, to polish the commutator surface with sand
cloth, or to adjust the spring pressure.
2. When the generator
set is used, the voltage is too low. It may also be that the diesel engine
speed is too low. In this case, you need to check the diesel engine speed. You
only need to adjust the prime mover speed to the rated value.
3. During the process of
using diesel generator set, the unit voltage is too low because the resistance
of the excitation circuit is too large, and the resistance of the magnetic
field rheostat is reduced to increase the excitation current. For semiconductor
excitation generator, check if the additional winding connector is broken or
connected incorrectly.
4, check whether the
generator exciter brush is in the neutral line position. It is recommended to
adjust the electric brush to the correct position, or to replace the brush to
solve the problem of low voltage.
5. Check if there is a
short circuit or ground fault in the stator winding or excitation winding of
the generator set, and check the fault and clear faults in time.
6. Some rectifier diodes
are broken down. It is necessary to deal with in time. Check and replace the
broken diodes.
Sponsor Ads
Created on Dec 23rd 2019 00:02. Viewed 275 times.