What is the rating of DC generator?
DC generators are very reliable with efficiency ratings of 85-95%. They are compact and light in weight. They provide consistent and constant output. They can be used to provide variable output power.
What is rated voltage in DC generator?
The voltage rating of a DC Generator is the voltage that the machine should produce at the rated speed which is specified in volts.
What does the nameplate of DC generator generally indicate?
The nameplate of a dc generator indicates that it will produce an output voltage of 24 V dc when operated at a speed of 1800 r/min.
What are DC motors rated in?
DC Motors are typically rated in terms of : Rated voltage: The operating voltage on the input side of the motor. Rated power: Power (in horsepower – hp or watts) that the motor is designed to deliver to the load (i.e., output power) for continuous operation.
How is a generator rated?
The capacity of a synchronous generator is equal to the product of the voltage per phase, the current per phase, and the number of phases. It is normally stated in megavolt-amperes (MVA) for large generators or kilovolt-amperes (kVA) for small generators.
Is kVA bigger than kW?
kW is the unit of real power and kVA is a unit of apparent power (or real power plus re-active power). The power factor, unless it is defined and known, is therefore an approximate value (typically 0.8), and the kVA value will always be higher than the value for kW.
What is a DC series generator?
a. A series DC generator is shown below in fig (a) – in which the armature winding is connected in series with the field winding so that the field current flows through the load as well as the field winding. The field winding is a low resistance, thick wire of few turns. Series generators are also rarely used!
What are examples of DC generators?
The alternator in a car (i.e., the DC generator which recharges the battery) is a common example of a DC generator of the type discussed above. Of course, in an alternator, the external torque needed to rotate the coil is provided by the engine of the car. Figure 42: Emf generated in a steadily rotating DC generator.
What is generator nameplate?
Generator nameplate capacity (installed): The maximum rated output of a generator, prime mover, or other electric power production equipment under specific conditions designated by the manufacturer.
What is a generator label?
Generator set labels can be separated into the following groups: Data Tags – Includes engine data tag and generator tag. These tags provide specifications on the engine and generator. This data is needed when troubleshooting the generator set and purchasing parts.