How to Detect If Generator Is All Copper or Half Copper
How
to detect if the generator is all copper or half copper?
1. The most accurate and
direct way is to dismantle the generator to see the stator coil. After
disassembling, divide the alternator into several points. Use a sharp blade to
scrape off the insulating paint on the surface of the enameled wire. Look at
the color of the metal: the purple color is the copper wire, the silvery white
is an aluminum wire. After testing, it is best to cover with insulating paint
to enhance insulation.
2. Another method is to
measure the DC resistance of the stator coil with a bridge. The resistivity of
copper is less than that of aluminum. The copper winding of the generator of
the same power is smaller than that of aluminum winding.
3. The physical
properties of aluminum are not easy to pull as thin as copper wire, so the
aluminum wire of the same power is slightly thicker; because the resistance of
aluminum wire of the same cross-sectional area is higher than that of copper
wire, to obtain the same current, it is bound to increase the cross-sectional
area of aluminum wire, that is, the diameter is large.
Common generators are
full copper brushless generators, semi-copper semi-aluminum generators, and
aluminum wire generators.
The
difference between the copper wire generator and the aluminum wire generator
1. The all-copper
generator is more durable. Aluminum has a greater resistant than copper, and
the heat generated during use is relatively high, so it is easy to burn out the
generator. Moreover, the welding of aluminum and copper can not be naturally
integrated, and the connection point of the power line is also easily burned
out, resulting in the whole life of aluminum wire generator being much lower
than that of pure copper wire generator.
2. Pure copper wire
generators are more energy efficient. The resistance of circuit component is
proportional to the amount of heat generated, and the resistance is large and
the heat is large.
3. The pure copper core
generator is quieter. For every 3 dB increase in noise, the noise energy is
doubled. The aluminum wire generator is 7 dB higher than that of copper wire
generator, so the aluminum wire generator noise is more than twice that of the
copper wire alternator.
In addition, the factors
affecting the price of diesel generator sets are also related to whether the
generator is brushless or brushed. The
full copper brushless generator is significantly more expensive than
brush generator.
So what is the
difference between a brushless generator and a brush generator in a diesel
generator set?
Disadvantage
of brushless generator:
1. large friction, large
loss;
2. large heating, short
life;
3. low efficiency, low
output power.
Advantage
of brushless generator
1. no brush, low
interference;
2. low noise, smooth
operation;
3. long life, low
maintenance cost.
It is decided that the
price of the diesel generator set is not only the brand, but also the material
of the generator. The cost of the copper wire generator is higher than that of
the aluminum wire generator. The quality of the brushless generator is better
than that of the brush generator. Therefore, for the same configuration, the
unit price of full copper brushless generator is relatively high.
All Starlight generators
adopt all-copper brushless generators. We provide Stamford, Marathon, CSIC
Siemens, ENGGA, Leroy-Somer, and Shanghai KEPU brushless generators matching
for diesel generator sets.
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