Máy biến áp khô Schneider

Standard design Possible adaptation
Manufacturing standards IEC 60076-11, EN 50588, EN 50629 GOST-R, BS, IEEE
Efficiency (losses level) Eco-Design Every reduced losses required by customers
Class tests C3*, E3, F1, ≤ 5 pC
HV/LV coils HV encapsulated in cast resin/LV impregnated HV and LV encapsulated in cast resin
Installations Indoor use:
• IP00 (without enclosure)/IP31 (with enclosure)
• C2 Corrosivity class, Medium durability (in
compliance with ISO 12944-6)
Outdoor use with properly designed enclosure:
• From IP35 up to IP44 (with enclosure)
• Up to C5-Marine, Medium durability
(in compliance with ISO 12944-6)
Winding material According to manufacturer optimization (Cu or Al) Cu/Cu
Phases Three-phase Single-phase
Cooling system Standard:
• AN (natural air)
Option:
• AF (air forced)
• 40% performance reserves
AFWF (air forced water forced)
Maximum T°C/altitude 40°C at any time/1000 m Up to 65°C/Above 1000 m
Thermal class insulation According to IEC 60085, Class F
Temperature rise 100 K 80 K (for 40°C)
Temperature rise adapted to maximum T°C
Temperature Rise < 100K upon request
Rated frequency 50 Hz or 60 Hz
Rated power Up to 3150 kVA Up to 15 MVA
Impedance voltage Uk From 4 to 6% • Lower than 4%
• Higher than 6% – Up to 11%
Vector groups Dyn, YNd All others according to IEC
Rated HV insulation Up to 36 kV (IEC) Up to 40.5 kV (GOST-R)
HV tapping Off-circuit tapping links: 3 or 5 positions, +/- 2.5% Off-circuit tapping links:
up to 9 positions, +/- 2.5% or higher
On Load Tap Changing (OLTC)
HV terminals Standard HV connections HV/MV plug-in or porcelain bushings through dedicated
cable boxes (IEC, BS or NEMA compliant)
Rated LV (MV) insulation 1.1 kV Up to 7.2 kV
LV terminals • Standard LV connections
• Top or bottom entry (on request)
• LV cable ducting interface (Canalis)
• Side entry through dedicated cable boxes
(IEC, BS or NEMA compliant)
Thermal protection • AN cooling system:
6 PTC sensors (or 3 PT100) + Thermal Relay
• AF cooling system:
6 PT100 sensors (or 9 PTC) + Thermal Relay