500 Kva Pole Mounted Transformer
Primary Voltage: 6KV–35KV or others
Secondary Voltage: 120V–600V or others
Power Rating: 500 KVA
Connection Type: Dyn11/Yyno or others
Standards: ANSI/IEEE, CSA/CAN, DOE
Certificate: CE, UL, cUL, CSA, SGS
The 500 kVA Pole Mounted Transformer adopts a sealed oil-immersed distribution transformer design, and its performance complies with IEC international electrotechnical standards. The core adopts high-quality cold-rolled silicon steel sheets with a fully mitered joint and non-punched structure. The winding is made of high-quality oxygen-free copper. The oil tank adopts a corrugated sheet type or expansion type heat dissipation structure.
500 kVA Pole Mounted Transformer Product Structure
Cylindrical Oil Tank
Integrated cylindrical steel oil tank, full-weld sealing process, oil-resistant and anti-corrosion coating, preventing oil leakage and adapting to harsh outdoor environments.
Corrugated Radiator
External corrugated heat dissipation structure of the tank body, oil-immersed self-cooling heat dissipation, no need to install additional fans, with uniform and stable heat dissipation.
High- & Low-Voltage Porcelain Bushings
High-strength insulated ceramic bushings, rainproof, anti-pollution and voltage-resistant, with firm wiring, effectively preventing creepage and leakage.
500 kVA Pole Mounted Transformer Application
Pole-mounted transformers are designed to supply power to residential overhead distribution loads. They are also suitable for light commercial loads, industrial lighting, and various power applications.
500 KVA Pole Mounted Transformer Technical Parameters
| Item | Standard Value | Notes |
| Rated Capacity | 500 kVA | Apparent power of the equipment |
| Phase / Frequency | 3 Phase / 50 Hz / 60 Hz | 60 Hz for Philippines, North America and Southeast Asia export |
| Rated Primary Voltage | 11kV | Off-load tap range: ±2×2.5%, 5 positions |
| Common Secondary Voltage | 6.6kV / 3.3kV / 0.415kV | 11kV/6.6kV is the most common distribution step-down ratio |
| Vector Group | Yy0 / YNa0 | Star neutral point must be independently grounded |
| Cooling Method | ONAN (ONAF forced air cooling optional) | Standard configuration for outdoor box-type substation and distribution room |
| Insulation Class | Class A mineral oil insulation | Winding temperature rise ≤65K, top oil temperature rise ≤60K |
| Short-Circuit Impedance (Uk) | 4% | Unified standard impedance for 500kVA medium capacity autotransformer |
| No-load Current | ≤0.5% | Standard limit for high-permeability cold-rolled grain-oriented silicon steel sheets |
| Operating Noise (at 1m) | ≤56 dB | Urban residential area distribution noise reduction standard |
| Operating Environment | Altitude ≤1000m, -25°C to +40°C | Enhanced insulation and heat dissipation available for altitude >1000m |
| Tank Protection Rating | IP54 fully sealed corrugated oil tank | Rainproof, dustproof, suitable for coastal salt fog conditions in Philippines |
Advantages of CHBEB 500 kVA Pole Mounted Transformer
Through CHBEB’s optimized design, the transformer can realize multiple protection functions, including overheating protection, overvoltage protection, overcurrent protection, overload protection, undervoltage protection, phase loss protection, short-circuit protection, and three-phase imbalance protection, improving the safety and stability of equipment operation.
