2025-06-18
power transformer on pole is a key equipment in the distribution network. If you need it, you can contact our company to obtain product information. It is mainly used to reduce the medium voltage power (such as 10kV) to low voltage power (220V/380V), which can be directly used by residents and commercial users.
Voltage conversion
Input: 10kV (high-voltage line, from the substation).
Output: 220V/380V (Low-voltage line, for household use).
Function: To complete the "last mile" voltage reduction for power transmission, and to adapt to household appliances and industrial equipment.
2. Power supply coverage
A single transformer typically covers 1 to 4 blocks (approximately 50 to 200 households), and its load capacity is generally 50kVA to 500kVA.
1.Installation method
It is fixed to the concrete electric pole or steel pole (in a double-pole or single-pole structure) using metal brackets.
Advantages: Saves floor space, suits the layout of overhead lines in urban or rural areas, and has low installation and maintenance costs.
2. Cooling method
Oil-immersed type: The mainstream type, which dissipates heat through the circulation of insulating oil (with the assistance of heat dissipation plates).
Dry type: Oil-free design (epoxy resin casting), excellent fire resistance, commonly used in densely populated areas.
3. Operating noise
Due to the continuous "buzzing" sound produced by the magnetic expansion of the iron core (approximately 40 to 60 decibels), it is more noticeable at night.
1.High voltage danger
The voltage on the high-voltage side is 10 kV (contacting it can be fatal), and the safety distance is ≥ 0.7 meters (in accordance with Chinese standards).
Do not climb power poles, throw objects or approach transformers (especially during thunderstorms).
2.Common Risks
Oil leakage: May cause fire or environmental pollution (urgent repair required).
Overload heating: During the peak summer electricity usage period, the shell temperature can easily exceed 90℃, accelerating aging.
Foreign object entanglement: If a kite or balloon gets tangled in the wires, it may cause a short circuit.
1.Intelligent upgrade: New transformers are equipped with sensors to monitor temperature, load and oil level in real time, and automatically send alerts to the control center.
2.Energy-saving design: Transformer with amorphous alloy core (no-load loss reduced by 60% to 80%), being gradually promoted.
3.Landscape integration: Some cities adopt green coatings or concealed designs to reduce the visual impact.
