220kV Single Phase SF6 Capacitor High Voltage Transformer

Capacitor High Voltage Transformer 1.Insul.material: Gas SF6 2. 220kV,75-300VA 3.L/C or T/T 4.Stru.:post type,toroidal coil

220kV Single Phase SF6 Capacitor High Voltage Transformer

Technical Parameters for TYDL 220/√3 - 0.005H SF6 Capacitor Voltage Transformers

1  Rated primary voltage  220/√3kV

2  Highest voltage for equipment  252kV

3  Rated frwquency  50(60)Hz

4  Rated insulation level  252/460/1050kV

5  Rated secondary voltage 

a)  Measuring secondary winding  0.1/√3kV

b)  Protective secondary winding  0.1/√3kV

c)  Residual voltage winding  0.1kV

6 Rated operating pressure of gas SF6 is 0.40MPa 

7 Minimum operating pressure of the gas SF6 is 0.35MPa

8 Rated output and relative accuracy class (cosΦ=0.8 lag) see Table 1

   Table 1   Rated Output and Relative Accuracy Class of Instrument Transformer

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	3P	0.5	3P	3P
Rated Output (VA)	100	-	150	-	-	-	300
	-	150	-	250	-	-	300
	75	-	100		-	75	300

Notes:

A. The Windings quantity, rated output and accuracy listed above can be designed according to the requirements of the clients;

B. Thermal limit load of each protective winding is 2000 VA.

9 The system earthing mode is effectively earthed neutral system

10 Arcing distance ≥2320mm                             

11 Creepage distance of outer insulation see Table 2

Table 2   Creepage Distance of Outer Insulation

Pollution Protection Class	Class II	Class III	Class IV
Creepage Distance (mm)	≥5040	≥6300	≥7812

12 Rated capacitance (CN) of the capacitor voltage divider is 0.005μF; Rated capacitance (C1N) of the high voltage capacitor of the capacitor divider is 0.006546114μF; 

Rated capacitance (C2N) of the intermediate voltage capacitor of the capacitor divider is 0.0211695μF.

13 The capacitance tolerance of the capacitor divider CN shall not exceed -5%~+10% of rated capacitance; the capacitance tolerance of the high voltage capacitor C1 shall not exceed -5%~+10% of rated capacitance; the capacitance tolerance of the intermediate voltage capacitor C2 shall not exceed ±5% of rated capacitance.

14 The voltage ratio of a capacitor divider shall not exceed ±5% of its rated value.

Notes: Detailed technical data and outline and stallation drawing can be provided under request.

 

220kV Single Phase SF6 Capacitor High Voltage Transformer