SF6 Inductive Voltage Transformers

Detailed Product Description

Technical Parameters for JDQXF-66W (1~3) Voltage Transformers

1  Rated voltage  66/√3 kV

2  Highest voltage for equipment  72.5 kV

3  Rated frequency  50 (60) Hz

4  Rated secondary voltage

a)  Measuring secondary winding  0.1/√3 kV

b)  Protective secondary winding  0.1/√3 kV

c)  Residual voltage winding  0.1 kV

5  Rated operating pressure of gas SF6  0.40 MPa

6  Minimun operating pressure of the gas SF6  0.35 MPa

7  Rated output and relative accuracy class (cosΦ=0.8 lag)

Winding	Measuring Winding			Protective Winding		Residual Voltage Winding
Terminals Marking	1a-1n		2a-2n	3a-3n		da-dn
Accuracy Class	0.2	0.5	0.5	0.5	3P	3P
Rated Output (VA)	100			150		300
		150			250	300
	75		100		75	300

Note: The thermal limit load for protective winding is 1000 (VA).

8  Arcing Distance ≥720 (mm)

9  Creepage distance of outer insulation please see Table 1

Table 1

Pollution Protection Class	Class II (W1)	Class III (W2)	Class IV (W3)
Creepage Distance (mm	≥1450	≥1813	≥2248