3 Phase Oil Immersed Deltaformer

By winding the transformer core instead of stacking sheets of metal in such a way that core becomes Hexagonal in shape, symmetrical & joint free, Raychem RPG brings an innovative closed symmetrical cage core for its distribution transformers "Deltaformer". This patented triangle-shaped core gives exceptional properties, produces less noise and reduces the amount of loss produced, making these products environmental friendly.

Product Features

• Lower no-load losses 
• Smaller in size 
• Low no - load amps 
• Robust design 
• Less vibrations 
• Low noise level 
• Smaller EM stray fields
• Lower in - rush current 
• Less third harmonics

Characteristics

• Compliant to Standards IS2026 & IEC60076 
• Frequency: 50 Hz 
• Vector Group: Dyn11 standard, others on request 
• Impedance voltage (Uk 75 °C): 4.5% 
• Temperature class: A (105 °C)
• Ambient temperature: -6 to +50 °C Temperature rise wdg/oil: 35/40 °C 
• BIL HV, LI/AC: 75/28 KV 
• BIL LV, AC: 3 KV 
• Off circuit tap changer : ±2x2.5%
• Double isolated copper windings 
• Noise level <54 dB(A) for all models 
• Hermetically sealed or breathing type 
• ONAN Cooling 
• Mineral oil as standard, other cooling liquid on request 
• Porcelain or elastimold bushings 
• Painted or galvanized tank with fin walls 
• Drain valve for oil drainage/sampling 
• Lifting lugs on the cover of the tank 
• 3 Star rating as per BEE