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china 220kv current transformer CT 220kv electric substation equipment

Professional Manufacturer of 0.5~330kV Instrument Transformer 20 YEARS MANUFACTURING EXPERIENCE

Rated voltage, kV	66/69	110/115	132/138	220/230
Highest voltage for equipment, kV	72.5	126/123	145	245/252
Rated frequency, Hz	50; 60
Rated power frequency withstand voltage, kV	140/160	230	275	460
Rated lightning impulse voltage, kV	325/350	550	650	1050
Flashover distance, mm	700	1100	1300	2100
Cree. distance, mm	W1:1450 W2:1820 W3:2250	2520 3150 3910	2900 3630 4500	5040 6300 7820
Mechanical load, N	3000	3000	4000	4000
Rated primary current, A	1~4000
Rated secondary current, A	1;2;5
Accuracy class	0.1; 0.2; 0.5; 0.2S; 0.5S; 0.5S; 5P; 10P; PX;TPX;TPY…
Rated output（recommended value）, VA	1A: 10~50 VA 2A: 10~50 VA 5A: 15~50VA
Instrument security factor FS	5; 10
Accuracy limit factors ALF	10; 15; 20; 25; 30; 40
Short-time thermal current (Maximum）, kA	40kA/3s