Product Description

Liugao is a 220KV Current Transformer Electric Substation Equipment Suppliers with 15 years of professional experience

Liugao recognized as a Famous Trademark of China.

Our 220/230kV CT has been successfully deployed in Pakistan, Mongolia, Bangladesh, Syria, North Korea, Chile, Peru, and within China State Grid without any quality issues. We offer two design options:

Type One: Live tank with secondary windings at the top

Type Two: Dead tank with secondary windings at the bottom,

Both designs boast proven techniques, operating for decades. A hermetically sealed stainless steel metallic bellows at the top protects voltage transformer oil from moisture, extending its lifespan. An oil level gauge on the bellows facilitates monitoring oil volume changes. The base options include spray painting, hot galvanizing, or cast aluminum, providing high corrosion resistance. Choose Liugao for reliable, innovative solutions in the power industry.

220KV Current Transformer Electric Substation Equipment Operating Environment

Installation elevation does not exceed 2000 meters

Ambient temperature: -5°C-40°C; The average temperature is not higher than +35°C

The installation site should be dry and ventilated; The relative humidity of the air is not greater than 80%, and there is no aggressive explosive media around

220KV Current Transformer Electric Substation Equipment Characteristics

It is oil/paper insulation structure. The main insulation is wound by high voltagecable paper, and is placed several capacitor screen of voltage division in the primaryinsulation,which can improve electric field distributing and decrease theconsumption of insulation material, immersed with voltage transformer oil after desiccatingunder vacuum. It has advantages of stable and reliable performance of insulation. rich operated experience, long service time. Perfect fluidity performance of voltage transformer oil is good for heat dissipation, it alsohas self recover ability for the failure of partial discharge caused by air bubble

and dust.

Hermetically sealed stainless steel metallic bellows is installed on the top, whichprotect the voltage transformer oil from moisture and extend the life time. also there is a oillevel gauge on the bellows for observing the changing of oil volume. There is a multi function oil drain valve on the base, which make it more convenientfor oil sampling, drainingThe current ratio can be adjusted easily by changing the connecting plate to seriesor parallel connection.

All adopted insulation parts are environmental protection materialsSecondary terminal board is made of epoxy casting, the sealing performance ismore reliable.

The base uses spray painting or hot galvanizing, which gives a high degree ofcorrosion resistance.

Fasteners and nameplate are stainless steel

220KV Current Transformer Electric Substation Equipment Specification

Product Name	220kv current transformer 220kv electric substation equipment
Origin	Dalian,China
Phase	Single
Coil Structure	Wound
Color	Brown/Grey
Frequency	50/60Hz
Certification	ASTA/CTQC/IEC/SGS/ISO9001
Package	Wooden Carton
Delivery Time:	30 days

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	2520	2900	5040
	W2:1820	3150	3630	6300
	W3:2250	3910	4500	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