Indoor Voltage Transformers

Detailed Product Description

1  Technical Parameters for JSZK-10 Voltage transformers

1.1  Rated voltage:10/√3/0.1/kV for measuring monitoring and control.

1.2  Rated voltage : 10/√3/0.1/√3/0.1kV for relay protection, and rated output 6P/100VA.

Technical Parameters Table

Model	Rated Voltage Ratio (kV)	Rated Output * (VA)				Limit Output (VA)
		Cl. 0.2	Cl. 0.5	Cl. 1	Cl. 3
JSZK-10	10/√3/0.1/√3/0.1/√3/0.1	25	50	100	150	300

* Rated output here refers to the rated output of each pahse for 3-phase voltage transformers in accordance with standard of GB1207-2006. Rated output listed in the table only conforms to the values in one among the four.

2   Features of JSZK-10 Voltage Transforners

2.1 The ferro-core of 3 single phase measuring-monitoring and control instrument transformer is a three core column one , the windings make a connection of star, its neatral point is not earthed directly, but is earthed through a relay protection instrument transformer. The relay protection instrument transformer is seperated from the 3 phase instrument transformer, so its installation place can be changed according to the actual requirement.

2.2  If one of the 3 phases in a non-effective earthing system is eathed at different degree and a ferro-magnetic resonance occurs, the relay protection instrument transformer produces a voltage high enough to actuate a relay.