Jls 3/6/10kv 5A Outdoor Oil-Immersed High-Voltage Power Metering Box Three-Phase Three-Wire Combined Transformer

1. The iron core of the voltage transformer is an outer iron type, which is made of cold-rolled oriented silicon steel sheets.
2. The iron core of the current transformer is an inner iron type, which is made of cold-rolled oriented silicon steel sheets, and the primary and secondary coils are installed on the iron core column.
3. The primary leads of the voltage and current transformers are drawn out for wiring through the conductive rods in the porcelain sleeve. The voltage and current transformers are fixed on the pallet, the pallet is hoisted on the box cover through the support rod, and is immersed in the transformer oil.
4. The high-voltage lead bushing and the secondary lead bushing are installed on the tank cover, and the oil drain plug grounding bolt is installed on the side of the fuel tank.
5. The instrument box is installed on the front of the fuel tank, with an observation window and a lead seal hole on it.
6. The compound ratio metering box adopts the double-change ratio compound type, which is convenient for more indirect and efficient work when changing the ratio.
7. According to the measurement principle of complex transformation ratio, the V/V-12 wiring method is adopted, the secondary point b in the voltage loop is grounded, and the tail end of the A.C phase current secondary loop in the current loop is grounded. Inside the complex ratio metering box, the tail end of the current secondary circuit and the point b at the end of the voltage secondary circuit have been connected to one point, but not grounded. When the meter is actually connected to measure, this point (b) should be reliably grounded.
Use environmental conditions:
1. System grounding method: neutral point is not effective grounding system;
2. Atmospheric conditions: There is no serious pollution in the atmosphere.
3. Installation place: outdoor
4. Ambient temperature; within the range of -24ºC-+40ºC, the air humidity is not more than 85%
5. Altitude: Use below 2500 meters above sea level
6. The installation site is free of corrosive gases