A fully charged battery should read over 12.6 volts. The actual output voltage produced by the alternator will typically be about 1-1/2 to 2 volts higher than battery voltage. At idle, most charging systems will produce 13.8 to 14.3 volts with no lights or accessories on.
Are all alternators 3 phase?
The majority of all alternators in use today are three-phase machines. They are much more efficient than either two-phase or single-phase alternators.
What are the two basic types of alternator?
From this standpoint, there are two types of alternators: the revolving armature type and the revolving field type.
How many types of alternator are there?
The five different types of alternators include: Automotive alternators – used in modern automobiles. Diesel-electric locomotive alternators – used in diesel-electric multiple units. Marine alternators – used in marine applications.
At what RPM does an alternator start charging?
These rpm, along with the pulley ratio, directly affect an alternator’s performance and life expectancy. An alternator has a normal range of operation. Most alternators need to spin at about 2,400 rpm at idle, have their maximum output above 6,000 rpm, and should never exceed 18,000 rpm.
How many volts does an alternator put out at idle?
Most alternators that are charging properly should produce a voltage of about 13.8 to 14.2 volts at idle with the lights and accessories off.
How much HP does it take to turn an alternator?
An alternator takes about 1 HP for every 25 Amps of power. At full output, a 100 Amp alternator will need about 4 HP. For a long time, most alternators don’t operate at full output.
How much torque does an alternator need?
If your alternator demand is for example, 2kW, then you need 2.7 HP from the motor to drive it. The details of RPM and torque vs. power you’d have to get from the alternator supplier. Typical alternators were 50-70A at 12V, or about 720W (roughly 1HP.)
Can I run a DC motor with an alternator?
You can’t convert a car alternator into a dc motor. You can make it into a 3 phase AC motor, with an adjustable field coil that runs on DC. You can’t convert a car alternator into a dc motor.
Will a car start without an alternator?
It will run on its own for a while until it runs out of charge. How long will a car run without alternator? It entirely depends on the capacity of the car battery. If the battery does not have a full charge, the vehicle may run from 5 to 30 minutes.