50 kva Transformer Business Cooperation
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50 kva Transformer FAQ
Q1： What is a single-phase pole Mounted transformer?
A single-phase transformer mounted on a pole is a small power transformer used to convert high voltage distribution lines into low voltage (such as 240V/120V) for residential or small commercial users.
Q2： What is the typical capacity range of a single-phase transformer on a column?
The commonly used capacity ranges from 10kVA to 167kVA (minimum 3kVA, maximum 500KVA), depending on the power supply requirements. Rural areas commonly use 25kVA or 50kVA, while cities may use higher capacity.
Q3： What should be noted when installing a transformer on a column?
-Choose a stable power pole to ensure its height meets the safety distance (such as being at least 3 meters above the ground);
-Secure firmly and avoid vibration;
-The grounding device must be reliable, with a grounding resistance of ≤ 4 Ω;
-There are no obstructions around, making it easy to dissipate heat and maintain.
Q4. What is the difference between single-phase pole mounted transformers and three-phase pole mounted transformers?
-Single phase output single-phase low voltage (120V), suitable for low load scenarios (such as households);
-Three phase output (480V), suitable for industrial or high load areas. Single phase structure is simpler and more cost-effective.
Q5. How to determine if the transformer is faulty?
-Abnormal noise or vibration;
-Excessive oil temperature or oil leakage (oil immersed type);
-Unstable output voltage;
-Burning or discharge marks on the shell.
Q6. What is the maintenance cycle for column mounted transformers?
-Routine inspection: once every 6-12 months;
-Key projects: Insulation oil testing (oil immersed), casing cleaning, joint fastening, grounding inspection, etc.
Q7. What could be the cause of transformer overheating
-Overload operation;
-Poor heat dissipation (such as dust accumulation);
-Internal short circuit or insulation aging;
-Insufficient oil level (oil immersed).
Q8. How to protect transformers in the event of lightning strikes or short circuits
-Install lightning arresters (such as zinc oxide lightning arresters);
-Configure CSP high-voltage fuses or circuit breakers to promptly cut off fault currents;
-Ensure that the grounding system meets the standards.
Q9. How long is the lifespan of the column mounted transformer?
The normal lifespan is about 20-30 years, depending on the usage environment, load rate, and maintenance quality. Adverse environments such as high humidity and salt spray may shorten the lifespan.
