Instrument Transformer Wiring Diagram. With these transformers instruments designed for low voltage circuits and having single standard current and voltage. On secondary side x1 more positive than x2 transformer markings and polarity lesson 11et332bpptx 6.
In td applications current and voltage transformers are mainly used for protection and measurement functions. Output voltage for lower input voltage can be found by. General principle and performance equations of d arsonval galvanometers vibration galvanometer and ballistic galvanometer.
Add impedance of the secondary wire run.
Figure 51 single phase instrument transformer service entrance connections wiring diagram. Think about the layout of the lighting. 180 degrees phasor diagram 322018 3 transformer markings and polarity lesson 11et332bpptx 5 conventional labeling h high voltage side x low voltage side h1 h2 x1 x2 0 phase shift terminal h1 more positive than h2. Instrument transformers are special types of transformers intended to measure cur rents and voltages.