HENGFENGYOU ELECTRIC --SMART ELECTRIC GLOBAL SERVICE PROVIDER
Manufacturer
HENGFENGYOU ELECTRIC
Standard on which performance data is based
IEC 60076,GB 1094-1996,GB/ T6451-2008,GB/T 7597-2007
Type
OIL IMMERSED
Method of Cooling
ONAN, ONAF, OFAF, OFWF, ODAF, ODWF
Rated Power
500 KVA
Voltage Ratio
10kv/0.4kv
Frequency
50HZ/60HZ
Tap Changer
5
HV·Tapping
±2.5%;±5%
Vector Group
Dyn11 or Yyn0
Core Material
CRGO Steel
Winding Material
Alumnium or Copper
No Load Losses (GB/T S13 series)
480w
Load Losses (GB/T S13 series)
5150w
Dimensions of Transformer
1320*780*1450mm
To accommodate different installation footprints, mounting configurations, and safety demands, Hengfengyou Electric provides the 500 kVA rating in four distinct structural styles:
500 kVA Substation Oil-Immersed Distribution Transformer: Features a corrugated tank layout optimized for natural convection cooling (ONAN). Perfect for outdoor pole-mounted or platform-mounted utility distribution yards and rural electrification projects.
500 kVA Epoxy Resin Cast Dry-Type Transformer: Flame-retardant, self-extinguishing, and moisture-proof. Engineered specifically for indoor commercial basements, educational buildings, and urban commercial centers where oil insulation is prohibited.
500 kVA Pad-Mounted Transformer Substation: Enclosed in a compact, tamper-proof steel enclosure that houses high-voltage switches and fuses. Ideal for suburban housing developments and commercial parking spaces.
500 kVA Low-Voltage Isolation Transformer: Designed for harmonic filtering, grid isolation, and precise voltage adjustment in automated industrial production lines.
Low-Loss CRGO Silicon Steel Core: Precision-laminated using high-permeability cold-rolled grain-oriented steel with a 45-degree full-mitred step-lap design, significantly reducing energy dissipation and operational noise.
High Operational Efficiency & EU Ecodesign Compliance: Exceeds 99% operational efficiency, meeting European Ecodesign Tier 2 standards (2015/2014/548/EC) to help business owners reduce overall operational electricity costs.
Hermetically Sealed Maintenance-Free Structure: Thermal volume changes in insulating oil are accommodated by the natural elasticity of the corrugated tank fins. This airtight design blocks atmospheric moisture and oxygen, extending service life to over 25 years without routine oil maintenance.
Excellent Short-Circuit Strength & Overload Capability: Built with reinforced coil clamping and optimized thermal cooling channels. Premium copper winding models safely handle short-term temporary load spikes up to 150% for up to 2 hours under monitored oil temperature (≤ 95°C).
The direct manufacturer price quote for a 500 kVA 10kV/0.4kV oil-immersed transformer depends on raw material commodity markets and custom technical configurations.
Primary Price Drivers:
Winding Material Selection: Copper windings require a higher initial purchase price than aluminum, but deliver lower load losses, higher mechanical strength during short-circuit conditions, and superior long-term reliability.
Energy Loss Efficiency Rating: Standard energy-saving models versus ultra-low loss designs (such as European Tier 2 standards).
Fittings & Accessories: Integration of Buchholz relays, multi-point dial oil thermometers, pressure relief valves, or tap-changer options.
Raw Material Market Fluctuations: Spot market pricing for electrolytic copper cathode and CRGO silicon steel lamination sheets.
Request an Instant 500 kVA Oil-Immersed Transformer Price Quote
Q1: What is the standard factory lead time for a 500 kVA distribution transformer?
For standard 10kV/0.4kV 500 kVA oil-immersed transformers, our factory lead time is typically 20 to 30 days. Since 500 kVA is a highly standardized capacity worldwide, core components and corrugated tanks are regularly stocked to ensure rapid assembly and shipment. Customized models take approximately 35 to 45 days.
Q2: What warranty coverage and extended plans are available for this 500 kVA transformer?
We offer a 12-month standard warranty from the commissioning date (or 18 months from shipment). For municipal contracts or extended commercial projects, extended warranty packages up to 5 years are available, backed by rapid technical assistance and spare parts supply.
Q3: How does Hengfengyou Electric maintain competitive pricing for 500 kVA power transformers?
By manufacturing directly and bypassing intermediate trading agents, we pass material procurement savings straight to buyers. Automated coil winding machines and robotic tank welding systems ensure precise quality control while keeping production costs low.
Q4: How do you calculate the primary and secondary rated currents for a 500 kVA 10kV/0.4kV transformer?
For a standard 10kV to 0.4kV step-down voltage transformation:
High-Voltage Side (10 kV): Rated Current I1 = 500 kVA / (10 kV × 1.732) = 28.87 A
Low-Voltage Side (0.4 kV): Rated Current I2 = 500 kVA / (0.4 kV × 1.732) = 721.69 A
Q5: What are the primary application scenarios for a 500 kVA oil-immersed transformer?
With a low-voltage rated current around 722 Amperes, a 500 kVA transformer is ideal for small manufacturing workshops, commercial retail buildings, agricultural irrigation plants, residential distribution substations, and decentralized solar power integration. It is standardly equipped with a Dyn11 vector group to effectively handle unbalanced neutral load conditions up to 100%.
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