Current And Voltage Transformers Protection

Model No. DL GTU103.1-S

In electrical power supply systems, currents and voltages are constantly measured and monitored to ensure that they remain within certain limits.

In general, the current and voltage values are so high that they cannot be measured directly.
Special transformers have to be used to reduce these values to a level that can be measured safely and economically.

These values are needed in order to provide information on the health of the system, to calculate the amount of power supplied to a customer and to rapidly switch off sections of a network in case of a fault event to avoid its propagation that could result in the collapse of the entire power supply system.

Experiments:
Current transformer
– Single phase current transformer operation.
– Single phase current transformer load test.
– Three phase current transformer.
– Three phase current transformer summing circuit  zero phase sequence of a three phase system.
– Summation current transformer.

Voltage transformer
– Single phase voltage transformer – Transformation ratio and influence of load.
– Three phase voltage transformers and fault to ground.
– Two single pole voltage transformers.
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