To perform short circuit test on a single phase transformer.
Single phase power measurement experiment.
The measurement of current and voltage 5.
To study and demonstrate the two wattmeter method of measuring the power in 3 phase networks.
The measurement of single phase power and power factors 6.
This type system has three areas of loads.
Two digital multi meters from the stockroom.
240 volt l1 l2 loads 120 volt l1 n loads and 120 volt l2 n loads.
Calibration of dynamometer power factor meter 3.
The connection for single phase power measurement using a dynamo meter type wattmeter is shown in figure below.
Single phase 240 120 volt source figure 5 represents a standard single phase 240 120 volt distribution system.
Power in a nonlinear system driven by a sinusoidal voltage waveform 4.
To verify thevenin.
Figure 10 single phase two wire and dc measurements.
Calibration of single phase energy meter using phantom loading method with rss meter as standard 2.
Measure and record the cold resistance of the stator of the induction motor.
Three phase power measurements objectives to demonstrate the line and phase relations in 3 phase balanced networks.
The total power drawn from a three phase supply is found by adding the separate values of power consumed by each phase.
Now we will explain the measurement three phase power measurement using three wattmeter method.
One wattmeter 4 wire system the single wattmeter is connected between one line and neutral in a three phase 4 wire system see figure 1.
However this method can also be used in 3 phase 3 wire delta connected load where power consumed by each load is required to be determined separately.
To measure the single phase power by using three voltmeter method.
Go back to three phase power measurements single phase three wire connection.
To perform open circuit test on a single phase transformer.
To measure three phase power by using two wattmeter method.
This is common in north american residential applications where one.
In order to measure the power the load current must pass through the current coil c c and hence it is connected in series with the load whereas the voltage across the load must appear across the pressure coil p c of the meter.
Figure 1 one wattmeter 4 wire.
Three wattmeter method is used to measure power in 3 phase 4 wire circuits.
In this system shown in figure 11 the voltages are produced from one center tapped transformer winding and all voltages are in phase.
Measurement of parameters of choke coil the following experiments are required to be conducted as compulsory experiments.
Power in a linear system driven by a periodic voltage waveform 3.
To measure single phase power by using three ammeter method.
