Vacuum Pressure Impregnated Transformers

VPI transformers are dry-type transformers where windings are vacuum-pressure impregnated with varnish, offering enhanced insulation and moisture resistance.

Key Features:

• Enhanced thermal performance
• Moisture resistance
• Reliable dry-type operation

Specifications

• Range: 10 kVA to 1000 kVA
• Voltage: 33 kV, 22 kV, 11 kV, 6.6 kV, 3.3 kV, 0.433 kV
• Vector Group: As per IS: 2026 (Part 4)
• Class of Insulation: Class F
• Cooling: AN or ANAF
• Type: On-load tap changer / Off-load tap changer / Off-load tap links
• Frequency: 50 Hz
• Applicable Standards: IS: 11171, IS: 335, IS: 2066, IS: 3347 or IEC: 60076