Loading Port:China Main Port
Payment Terms:TT OR LC
Min Order Qty:-
Supply Capability:-
80% of the power frequency withstand voltage
the leak rate is low
high operating reliability
good safety performance
Introduction :
Release time :
2012-8-22 Product Description: Product role With 72.5 ~ 550kV GIS Current Transformer, sulfur hexafluoride gas insulation, mainly used in power systems power measurement, current measurement and relay protection.
Product structure
Features
1, insulation stable: 80% of the power frequency withstand voltage under the partial discharge amount not greater than 5pC.
2, the leak rate is low: annual leakage rate of less than 0.3%, far better than the 1% of the requirements of the GB.
3, high operating reliability: pressure SF6 gas zero table, safe operation can be a long time.
4, good safety performance: explosion-proof device with excellent explosion-proof performance.
5, high precision: measurement up to meet the 0.1 level.
6 protection: protect the winding core of high permeability and saturation flux density is high (greater than 1.8T).
Technical parameters
Type | L (S) R-72.5 | L (S) R-126 | LR-220 | LR-500 | ||
The devices rated voltage, kV | 66 | 110 | 220 | 500 | ||
The * Device highest voltage, kV | 72.5 | 126 | 252 | 550 | ||
Rated frequency Hz | 50-60 | |||||
* Short-time power frequency withstand voltage, kV | 160 | 230 | 460 | 740 | ||
* Lightning impulse voltage, kV | 350 | 550 | 1050 | 1675 | ||
Partial discharge level (1.2Um / √ 3) | <5pC | |||||
* Rated current, A | 300-300 | 300-300 | 300-4000 | 600-5000 | ||
* Rated secondary current, A | 5 or 1. | 1 | ||||
* Accuracy class (subject combinations) | 0.2S; 0.2; 0.5S; 0.55P; 10P | |||||
* Rated output, VA | 15-50 | 15-50 | 10-50 | 10-30 | ||
Safety factor, FS | 5 or 10 | |||||
* Accuracy Limit Factor, ALF | 10-40 | |||||
Short-term thermal stability current, kA / s | 40/3 | 40/3 | 31.5-63 / 3 | 50-63/3 | ||
Rated dynamic current, kA | 100 | 100 | 80-125 | 125-160 | ||
SF6 rated pressure (20 ° C), Mpa | 0.4 | |||||
A SF6 Buqi pressure (20 ° C), Mpa | 0.35 | |||||
SF6 gas leakage rate,% | <0.3 | |||||
SF6 moisture content, μL / L | <150 | |||||
