Single Phase Overhead Pole Mounted Oil Immersed Distribution Transformer

HANYSEN Oil-filled single-phase overhead transformers designed and produced normally used for stepping utility distribution voltages(ranging from 2400 to 34500 volts) down to lower utilization voltages. Although some are used for stepping down to commercial and industrial voltages such as 277, 240/480, 2400 and 4800,most are used for stepping down to the single-phase voltage of 120/240.These same transformers are also used for small substations,miscellaneous applications and can serve to step up voltages.

Applications

• Residential

• Commercial & Industrial sectors

• Agricultural

• Distribution networks expansion or modernization

Key Features & Differentiators

• Safety Protection Options
  Over current protection, Arresters protection.

• Standards Compliance: All transformers are manufactured to meet and exceed ANSI. NEMA, DOE, lEEE and CSA standards, ensuring compatibility and safety.

• Construction: Durable tank design with high-grade silicon steel cores provides long-lasting performance in demanding conditions.

• Reliability: High-quality materials and rigorous testing ensure long-term durability.

• Flexibility: Available in different configurations to meet specific installation and operational requirements.

• Cooling System: Equipped with effective cooling mechanisms for optimal performance in various environments.

• Mounting: Compact, lightweight design with easy-to-install mounting brackets.

Main Standards

• IEEE Std C57.12.00™

• IEEE Std C57.12.20™

• IEEE Std C57.12.30™

• IEEE Std C57.12. 31™

• IEEE Std C57.12. 39™

• IEEE Std C57.12.70™

• IEEE Std C57.12.80™

• IEEE Std C57.12.90™

• IEEE Std C57.91™

• CSA C2.2, 1st Ed

• DOE 10 CFR Part 431, DOE 2016

Standard Features

• Lifting Lugs

• Support lugs: type A for 10-50kVA, type B for 75-167kVA

• High Voltage porcelain bushings, with eyebolt or spade terminals, 1 or 2

• Low Voltage bushings, with eyebolt or spade terminals

• Tank and covers: Stainless steel or carbon steel

• Recessed tank bottom

• Tank Grounding provision and connector

• Low-voltage grounding connection and connection strap

• Winding: Aluminum or Copper

• Electrical grade mineral oil or FR3 fluid

• Laser-engraved nameplate

• Inner oil level indicator

• Pressure Relief Device

• Meets DOE Energy Efficiency Standard

• Permanently identification Per IEEE Std C57.12.70 and customer requirement

Optional Features

• HV Surge arrester

• Primary Internal current limiting fuse and protective link

• External De-energized Tap-changer

• External dual voltage switch

• IFD sensor (Internal Fault Detector)

Routine Tests

• Resistance measurements test

• Ratio test

• Polarity and phase relation tests

• No-load losses and excitation current test

• Impedance voltage and load loss test

• Applied voltage test

• Induced voltage test

• Lightning impulse test

• Leak test

Components

• Figure A: Primary fuse

  Figure B: Primary heavy-duty surge arrester

  Figure C: Primary tap change switch

  Figure D: HV bushing: ANSl standard, porcelain insulator, for BlL 95-150kV, aluminum bronze precision casting

  Figure E: LV bushing: ANSl standard, eyebolt style or spade, porcelain insulator, aluminum bronze precision casting

Routine Tests

• Resistance measurements test

• Ratio test

• Polarity and phase relation tests

• No-load losses and excitation current test

• Impedance voltage and load loss test

• Applied voltage test

• Induced voltage test

• Lightning impulse test

• Leak test

Diagram: 1 or 2 HV Bushings