Dry Type Insulated Current Transformers, China Dry Type Insulated Current Transformers Supplier,Factory

Dry Type Insulated Current Transformers

South High-Voltage Electric Co., Ltd. [China]

Minimum Order: 0

Quality/Safety Certification: 0.00

Electronic Current Transformers
1.Max Voltage:252KV
2.Rated Primary Current:300 to 4000A
3.Rated Secondary Current 5A
4.GOST

LVQB(T)-35/66/110/220 type SF6 gas insulated current transformer
Altitude			not exceed 2000m(the ones exceed 2000m shall be designed separately)
Ambient temperature			-40°C~+50°C, daily mean temperature not exceeds 30°C
Max monthly mean relative humidity			90%
10min max average wind velocity			35m/s
Max ice coating thickness			10mm
Class of pollution			3 4 Class
Max voltage of equipment			40.5/72.5/126/252kV
Rated frequency			50Hz
Rated primary current			300~4000A
Rated secondary current			1A or 5A
Secondary combination			0.2, 0.2S, 0.5, 0.5S, 5P, TPY, TPS Class combination at random
Rated output			0.2 class, 0.2S class, 0.5class, 0.5S class, 5P class: 20~60VA TPY class:10~20Ω
Accuracy limit condition of class TPY			a. primary time constant Tp=100ms or 60ms
			b. short-circuit current direct component 100%(i.e. full migration)
			c. specified working cycle: C-0.1s-0-0.5s(or 0.4s)-C-0.1s-0(guarantee all accuracy class times are 0.4s)
			d. symmetrical short-circuit current multiple: 10, 15, 20
Rated insulating level			current transformer of 35kV: 40.5/95/185kV; Current transformer of 66kV: 72.5/140/325kV; Current transformer of 110kV: 126/200/480kV; Current transformer of 220kV: 252/395/950kV
Short-time thermal current			50-63kA, 3S
Rated peak withstand current			125-160kA(peak)
Withstand voltage level under zero gauge pressure			1.3 times of max working voltage of equipment
Partial discharge level			1.2 times of max working voltage of equipment ≤5pC
Annual gas leakage rate			≤0.5%
Water content of SF6 gas			≤150×10-6(V/V)
Specific creepage distace of external insulation			25mm/kV or 31mm/Kv
Static bearing load of primary terminal			2000N~6000N
Max total mass of product			current transformer of 35kV: 450kg(thereinto mass of SF6 gas is 4kg); current transformer of 66kV: 500kg(thereinto mass of SF6 gas is 5kg); current transformer of 110kV: 450kg(thereinto mass of SF6 gas is 7kg); current transformer of 220kV: 1400kg(thereinto mass of SF6 gas is 23kg);