Overview
This type of voltage and current combined transformer (measurement box) is used for three-phase lines with AC 50Hz and rated voltage of 20KV, and is used for voltage, current, electric energy measurement and relay protection. It is suitable for outdoor substations in urban power grids and rural power grids, and can also be used in various transformer substations in industrial and mining enterprises. The combined transformer is equipped with active and reactive energy meters, which is called a high-voltage energy metering box. This product can replace oil-immersed combined transformer (metering box).
Features
(1) The combined transformer is assembled from dry single components, there is no oil leakage problem, and oil-free;
(2) The voltage and current are all cast with resin, like a building block structure, easy to replace, easy to maintain, and cost-saving;
(3) The product has high precision, the current transformer can reach 0.2S level, and can realize wide load measurement;
(4) The use of materials makes the product have high dynamic and thermal stability;
(5) The voltage part can be equipped with a 220V auxiliary winding to provide power for switches, etc.
Conditions Of Use
1. The ambient temperature is between -45°C and 40°C, and the daily average temperature does not exceed 35°C;
2. The altitude does not exceed 1000 meters (please provide the altitude when using in high altitude areas);
3. Wind speed: ≤34m/s;
4. Relative humidity: the daily average does not exceed 95%, and the monthly average does not exceed 90%;
5. Shock resistance: horizontal acceleration 0.25g, vertical acceleration 0.125g;
6. This product can run for a long time at 1.2 times the rated voltage factor;
7. Device category: outdoor composite thermal insulation fully enclosed structure.
