This type of three-phase outdoor dry-type high-voltage energy metering box (combined transformer) is suitable for measuring electrical energy on lines with a frequency of 50Hz three-phase AC, rated voltages of 6kV and 10kV. It is an electrical equipment used to directly measure active and reactive electrical energy in high-voltage lines. It plays an important role in preventing electricity theft, saving energy, and strengthening power supply management. All technical indicators comply with the requirements of GB17201, GB1208, and GB1207 standards. This product can replace oil immersed power metering boxes

JSLG4-6, 10. Structural characteristics of outdoor high-voltage electric energy metering box:
This product consists of two main parts: a combination transformer and an electric meter box.
The combination transformer consists of two single-phase voltage transformers (PT) and two current transformers (CT), both of which are electromagnetic. The two PTs are connected by V/V to form a three-phase measuring device, and the primary windings of the two CTs are connected in series with A and C, respectively. The side of the box is welded with grounding bolts.
The electric meter box is connected to the secondary winding output of the combined transformer, and the electric meter box is equipped with one three-phase three wire active meter and one reactive meter.

JSLG4-6, 10 Technical parameters of outdoor high-voltage electric energy metering box:
Accuracy level and corresponding secondary load:
PT: 0.2 grade/15VA 0.5 grade/20VAC: 0.2S grade/10VA 0.2 grade/10VA 0.5 grade/10VA 0.5 grade/10VA;
Rated current ratio: 5-300/5 (A);
Insulation level: 6kV is 7.2/30/60, 10kV is 12/42/75;
Pollution level: Level IV;
Load power factor COS φ=0.8 (lag);
Rated voltage ratio: 10kV is 10/0.1 (kV), 6kV is 6/0.1 (kV).

JSLG4-6, 10 Outdoor High Voltage Energy Metering Boxes