PRODUCT
12.47kv 12.7kv pole mounted transformer
Single-phase Pole-mounted Oil-immersed Distribution Transformer Full Technical Parameters (Standard Version)
1. General Data
– Type: Single-phase, pole-mounted, oil-immersed, fully sealed distribution transformer – Phase: Single-phase
– Frequency: 50 Hz / 60 Hz (optional) – Rated Voltage (HV): 11 kV, 13.2 kV, 13.8 kV, 24.9 kV, 34.5 kV (common for overseas markets)
– Rated Voltage (LV): 0.23 kV, 0.4 kV (230/400 V) – Connection Group: Ii0 (standard)
– Cooling Method: ONAN (Oil Natural Air Natural) – Insulation Class: A
– Service Conditions: Outdoor pole-mounted, suitable for coastal, rural, and remote areas – Core Structure: High-quality silicon steel sheet, wound core or laminated core (low noise, low no-load loss)
2. Rated Capacity Range
10, 15, 25, 37.5, 50, 75, 100, 167 kVA (common for pole-mounted single-phase transformers)
3. Voltage & Taps
– HV Tap Changer: Off-circuit tap changer (no-load) – Tap Range: ±2×2.5% or ±4×2.5% (optional)
– Voltage Regulation Accuracy: ±0.5%
4. Losses (Typical Values for 50 Hz, 11 kV / 0.23 kV)
Rated Capacity (kVA) No-load Loss (W) Load Loss (W) No-load Current (%)
10 40 200 0.8 15 55 280 0.75 25 80 420 0.7
37.5 110 600 0.65 50 140 780 0.6 75 190 1100 0.55
100 240 1450 0.5 167 350 2200 0.45
5. Impedance Voltage
– 10–50 kVA: 4.0% – 75–167 kVA: 4.5%
6. Insulation Level
– HV: LI60AC28 (for 11 kV class), LI95AC45 (for 24.9 kV class), LI150AC70 (for 34.5 kV class) – LV: ≤ 2 kV
7. Temperature Rise
– Winding: 65 K – Top Oil: 55 K
– Ambient Temperature: -40°C ~ +40°C (adaptable to extreme cold or hot regions)
8. Oil Tank & Structure
– Tank Material: Corrosion-resistant steel plate, welded, cylindrical shape
– Oil Type: Transformer oil 25# or 45# (optional for low-temperature environments)
– Sealing Type: Fully sealed structure with bellows or diaphragm to prevent oil oxidation
– Corrosion Protection: Sandblasting + epoxy primer + polyurethane topcoat (suitable for coastal and corrosive atmospheres)
– Mounting: Pole-mounted brackets, suitable for 9–12 m utility poles
9. Accessories (Standard)
– Oil level indicator – Pressure relief valve – Thermometer pocket – Earthing bolt – HV / LV bushings (porcelain or polymer composite)
– Lifting lugs – Nameplate – Lightning arrester (optional) – Fuse cutout (optional, for overcurrent protection)
10. Standards Compliance
– IEC 60076 – ANSI C57.12.00 (for North American market) – CSA C22.2 No. 60076 (for Canadian market)
– GB/T 1094 (Chinese market) – GB/T 6451-2023
11. Protection Class
– IP00 (open type) – IP20 (with enclosure, optional)
This series of pole-mounted transformers is a core power distribution device custom-built for the North American market and regions adopting US-standard power distribution systems. Developed and manufactured in strict compliance with the IEEE C57.12.20 and ANSI international standards, the product delivers quality and performance that fully meet the requirements of local power grids. It offers a complete range of standard capacities from 10 kVA to 333 kVA, with customized capacity solutions also available. Having obtained authoritative UL/CUL certification, it serves as a highly reliable power supply option for commercial districts, industrial parks, high-density residential areas, and agricultural irrigation systems.
Core Application Areas
- Power Supply for Commercial & Public Facilities: Provides stable three-phase power to shopping malls, office buildings, schools, hospitals, and government office buildings, ensuring the continuous operation of various public services and commercial activities.
- Light Industry & Manufacturing Scenarios: Meets the power needs of small factories, processing workshops, warehousing centers, and assembly lines, balancing load stability and operational efficiency.
- Power Supply for Medium & High-Density Residences: Delivers efficient centralized power supply solutions for apartment buildings, large residential communities, and townhouse complexes, satisfying the simultaneous power demands of multiple users.
- Rural Electrification Projects: Serves large-scale farms, irrigation pumping stations, livestock breeding bases, and agricultural product processing centers, facilitating the electrification upgrade of agricultural production and rural infrastructure.
- Renewable Energy Grid Connection Points: Acts as a dedicated grid-tie device for small-scale photovoltaic power plants and wind farms, enabling the precise integration of distributed green power into the 12.47kV distribution network to realize the efficient utilization of clean energy.
Core Product Advantages
- Fully Compliant with Standards, Plug-and-Play Ready: The product design is 100% aligned with North American and US power grid standards. It can be directly integrated into local power distribution systems without additional adaptation or modification, shortening project deployment cycles.
- Authoritative Certification, Hassle-Free Approval: The product has passed dual authoritative UL/CUL certifications and comes with a complete set of IEEE standard test reports. These provide solid support for smooth project approval and acceptance, reducing compliance risks.
- Optimized Infrastructure Costs, Efficient Installation: Featuring a pole-mounted design, it eliminates the need for separate distribution rooms and concrete foundations, significantly cutting civil engineering costs while enabling a simple and efficient installation process.
- Improved Energy Efficiency, Reduced Power Loss: Flexible installation near load centers dramatically shortens the low-voltage power supply radius, effectively lowering line losses and boosting the energy utilization efficiency of the entire distribution system.
