Three phase pad mounted transformer, with their compact design, high safety and outdoor adaptability, have become key equipment for connecting medium and high voltage with low voltage in distribution systems, playing a significant role in both urban and rural power grids.
Key features
1. Compact Structure, Small Footprint and Flexible Installation
Adopting an integrated design that incorporates high-voltage switches and protective devices into one unit, the transformer requires no additional cabinets. Its volume is only 1/3 to 1/5 of that of European-style transformers of the same capacity. It can be installed close to load centers, saving land and infrastructure costs while adapting to space-limited sites.
2. Fully Sealed and Insulated, High Safety and Maintenance-Free
The fully sealed and fully insulated structure has no exposed live parts, providing excellent dustproof, waterproof and anti-corrosion performance. It effectively avoids electric shock and short-circuit risks. The equipment requires no regular oil refilling or cleaning, realizing long-term maintenance-free operation and greatly reducing operation costs.
3. Dual Protection Mechanism Ensures Stable Power Supply
Equipped with dual protection of dual-sensitive fuses and backup current-limiting fuses, it provides dual current and temperature protection. It responds quickly to overload, short circuit and overheating faults with high sensitivity. Supporting both loop and terminal power supply modes, it effectively prevents power outage caused by single-point failure.
4. Low Loss and High Energy Efficiency
Based on VKE’s sophisticated core processing technology, the transformer adopts high-permeability and low-loss silicon steel sheets with precise cutting and stacking. It features extremely low core loss, lower temperature rise and low noise. With energy consumption better than industry standards, it delivers outstanding long-term energy-saving performance.
5. Strong Overload Capacity and Excellent Environmental Adaptability
The product supports strong short-time overload operation, capable of withstanding 2 times rated load for 2 hours and 1.6 times rated load for 7 hours, perfectly adapting to fluctuating loads and peak power demand. The corrosion-proof and waterproof structure enables stable all-weather operation under harsh outdoor temperature and environmental conditions.
6. Easy Installation, Short Construction Period and High Cost Performance
Adopting live-line pluggable elbow connectors on the high-voltage side, the transformer features simple wiring and convenient disassembly. It requires no complicated civil engineering, greatly shortening installation and commissioning cycles. With high integration and low overall operation costs, it presents excellent cost performance for mass engineering projects.
7. Superior Power Quality and Wide Application Scenarios
It maintains stable operating voltage and high power quality, reducing line loss and voltage drop. Applicable for residential communities, commercial parks, municipal engineering, industrial and mining enterprises, it supports both terminal and loop power supply with strong universality.
Application
3 phase pad mounted transformer is a closed three-phase power transformer installed on a ground base, widely used in distribution systems. This type of transformer is widely used in power distribution systems, outputting high-voltage electricity into low-voltage electricity, which can be used for daily power supply. The fully sealed design makes it suitable for outdoor use.
Main structure
1. The foundation base shall be kept level and stable to avoid foundation settlement that may affect normal transformer operation.
2. All high‑voltage cable connections must comply with relevant electrical standards, with reliable insulation and sealing treatments applied.
3. Do not stack any sundries around the transformer. A standardized safety clearance must be reserved at all times.
4. Regular inspections shall be performed to check the oil level, operating temperature and insulation condition of the transformer.
5. The equipment casing must be kept clean. Regular cleaning is required to ensure safe and stable operation.
6. For thunderstorm-prone areas, lightning arresters shall be installed, and the grounding system safety must be checked periodically.
Precautions
1. The foundation base shall be kept level and stable to avoid foundation settlement that may affect normal transformer operation.
2. All high‑voltage cable connections must comply with relevant electrical standards, with reliable insulation and sealing treatments applied.
3. Do not stack any sundries around the transformer. A standardized safety clearance must be reserved at all times.
4. Regular inspections shall be performed to check the oil level, operating temperature and insulation condition of the transformer.
5. The equipment casing must be kept clean. Regular cleaning is required to ensure safe and stable operation.
6. For thunderstorm-prone areas, lightning arresters shall be installed, and the grounding system safety must be checked periodically.