20/24kV Oil-Type Current Transformer

Product Parameters:

MODEL:20-24 kV Outdoor Oil-Type Current Transformer

· Oil immersed current transformer
· Single phase
· Rated voltage: 15kV, 17.5kV, 20kV, 22kV, 24kV
· Metering class for CT: 0.2S, 0.2, 0.3, 0.5, 0.5S, 0.6
· Standard: IEC, ANSI, GB
· Type name: LJW-20， LJW-24， LJW-22

General
This outdoor oil immersed type current transformer used in 15kV, 17.5kV, 20kV, 22kV and 24kV power system, for measuring and protection.
It has been used in outdoor pole mounted and transmission line.
The current transformer is made from high quality transformer oil, amorphous alloy core for metering and high quality CRGO core for protection, primary and secondary use pure electrolytic copper, both winding and core have shielding

Standard
All UNISUN Electric instrument transformers are in conformity with IEC standards, and recommendations IEC 61869. Transformers in conformity with specific country standards can also be supplied. (IEEE C57.13, NBR6855).

Specification data she

Rated primary current(A)	Accuracy classes combination	Accuracy class and output (VA)							Short-time thermal current(kA/1s)	Rated dynamic current(kA)
		0.2s	0.2	0.5s	0.5	10p10	10p15	10p20
5	0.2S/10P10 0.2S/10P15 0.2S/10P20 0.2/10P10 0.2/10P15 0.2/10P20 0.5/10P10 0.5/10P15 0.5/10P20 0.2S/0.2/10P10 0.2S/0.2/10P20	10	10	10	10	15	15	15	0.5	12.5
10									1	2.5
15									1.5	3.75
20									2	5
25									2.5	6.25
30									3	7.5
40									4	10
50									5	12.5
75									7.5	18.75
100		10	10	10	10	15	15	15	10	25
150									15	37.5
200									20	50
300									30	75
400									40	100
500									50	75
600		15	15	15	15	20	20	20	60	150
800									80	200
1000		15	20	15	30	30	30	20	80	200
1200									80	200
1500									80	200
2000									80	200

Products can be customized by customer requirements, above data is standard data, customized data please contact us.

Products can be customized by customer requirements, above dimension may change, correct dimension please contact us.

Main Structure

A current transformer (CT) primarily consists of five major components: the iron core, the primary winding, the secondary winding, the insulation system, the housing, and the terminals. These components work together to achieve current transformation and electrical isolation.

Iron Core — Magnetic Flux Path
Primary winding — Series current-carrying
Secondary Winding — Inductive Output
Insulation—A Safety Barrier
Housing & Accessories

Primary winding

High electrolytic copper is used as primary winding, silver base welding material is used at the welding place, and semiconductor shielded paper is wrapped to ensure that the partial discharge tseting data is qualified.

Secondary winding

Large capacity design secondary winding, automatic winding, high insulation and high purity enameled wire, to ensure wide capacity output under standard accuracy.