Three-phase MV/LV distribution transformer, type H59 - 630KVA - 15/20kV compliant with NF C52-112-1/NF C52-113 standards
This range of transformers complies with IEC 60076 and 60354 standards, as well as NF C52-112-1 and NF C52-113 standards. The transformers shall meet the following specifications:
- Mineral oil-immersed transformers
- LV and MV windings made of aluminium
- Outdoor installation in H59-type substation enclosure
- Maximum ambient temperature: 40°C
- Maximum dielectric temperature rise: 60°C
- Maximum winding temperature rise: 65°C
- Cooling type: ONAN (Oil Natural Air Natural)
- Hermetically sealed tank (fully filled)
- Bolted tank cover
- Standard anti-corrosion treatment and coating
- Color: RAL 7033 grey
Description
Rated power (kVA): 630
Rated voltages (kV/V): Dual primary 15–20 kV / 410 V (no-load secondary voltage)
High-voltage insulation level (kV): 17.5 for 15 kV – 24 for 20 kV
Tapping range (%): ±2.5%, ±5% for 20 kV; ±3.33%, ±6.67% for 15 kV
Vector group: Dyn11
Frequency (Hz): 50
Short-circuit voltage at 75°C (%): 4
Losses (W):
– No-load: 1300 W
– Load (at 75°C): 7150 W
Losses and short-circuit voltage are subject to the tolerances specified in IEC 60076.
Features
Oil immerged transformer Aluminium coil
1 x Lockable adjustment switch located on the cover (operable without voltage) 3 x High-voltage plug-in bushings according to HN 52-S-61 4 x Low-voltage busbar-through bushings 2 x Earthing terminals on the cover 2 x Lifting and unhooking rings 1 x Nameplate in French 1 x Filling port 1 x Drainage device 1 x Low-voltage cover (capot BT) 1 x DGPT2 protection device 1 x Locking device