Features of products:

1.Parameter:

(1).Elevation:no more than 2000m( products need to be designed separately if over 2000m)

(2).Environment temperature:Max.+50/Min.-40℃ ,the average daily temperature does not exceed 30℃

(3).The maximum average monthly relative humidity: 90%.

(4).The minimum average cloud speed of 10min: 35m/s.

(5).The maximum radial thickness of ice: 10mm

(6).Pollution grade: Ⅲ、Ⅳ grade.

2. Maximum equipment voltage: 40.5/72.5/126/252kV

3. Rated frequency: 50Hz

4. Rated primary current: 300~4000A

5. Rated secondary current: 1A or 5A

6.  Quadratic Combination:0.2、0.2S、0.5、0.5S、5P、TPY、TPS grades combined as casual

7. Rated output:0.2 grade,0.2Sgrade,0.5grade,0.5Sgrade,5Pgrade:20-60VA TPY grade:10-20Ω.

8. Accurate limiting coefficient:20~40.

9. Instrument security factor: ≤5.

10. TPY grade accurate limiting condition:

A、primary time constant TP=100ms or 60ms

B、Shortage current Direct Current component 100% (means:full migration)

C、Prescribed cycle of work:C-0.1s-0-0.5S( or 0.4S)-C-0.1S-0(make sure the average accurate time is 0.4S)

D、Symmetry shortage current times：10、15、20

11. Rated isolated level： 35KV current transformer: 40.5/95/185kV

66kV current transformer: 72.5/140/325kV

110kV current transformer:126/200/480kV

220kV current transformer: 252/395/950kV

12、Short-time terminal current(short time withstand current): 50-63kA、3S

13、Rated dynamic stable current: 125-160kA(Peak Value)

14、Zero gauge pressure withstand pressure level:1.3times of the equipment Maximum  working voltage

15.Partial discharge level: 1.2times of the equipment maximum working voltage ≤5

16、Yearly gas leakage rate:≤0.5%

17、SF6 gas moisture content:≤150X10-6(V/V)

18、Radio interference level: radio interference voltage ≤500μV under 1.1 times of the equipment maximum working voltage.

19、External insulation creep-age distance:25mm/kV or 31mm/kV

20、Primary terminal static load:2000N~6000N

21、Maximum amount weight of products:

 35kV current transformer: 450kg( the weight of SF6: 4kg)

 66kV current transformer: 500kg( the weight of SF6: 5kg)

 110kV current transformer: 600kg(the weight of SF6:7kg)

220kV current transformer:1400kg( the weight of SF6:23kg)

Technology parameter:

Appearance and installation diagram: