Cast Resin Transformers Up to 5000 kVA

The Cast Resin Transformers of up to 5000 kVA are manufactured at the Bahra-TBS plant.

These high-quality Cast Resin Transformers are the ideal choice for all needs, with advantages like:

• Total safety for the customer, guaranteed by the total absence of combustible products
• Maximum environmental protection, thanks to the absence of polluting and flammable insulating liquids
• Energy-saving, with the exclusive “reduced loss” range
• Maximum flexibility straight from the beginning of the installation

Range

• NL – Normal losses
• RL – Reduced losses (High Efficiency)

• Materials of Windings: Copper (Cu) & Aluminum (Al)

• Rating (kVA): 100–5000
• Frequency (Hz): 50/60
• Tapping links, HV side: ± 2 x 2.5%
• Thermal class of the insulating system: 155 °C (F) / 155 °C (F)
• Temperature rise: 100/100 K
• Class of use: E2-C2-F1 Certified CESI A9032391 IEC 60076-11
• Tolerances: According to IEC /CEI
• Partial discharge < 10 PC

Compliance

• IEC 60076-11/IEC 60068-3-3
• IEC 60529
• IEC 60616/IEC 61678/IEC 62032

Certifications

• Fully TYpe Tested – CESI Italy
• E2-C2-F1 Certified CESI A9032391
• SASO
• Seismic

Protection

• IP-23/31

12 kV Insulation

• Primary voltages (kV): 6-10-11. Insulation class: 12 kV BIL 60 kV
• (BIL 75 kV available on request)
• Secondary voltages no-load (V): 400-433 (insulation class 1.1 kV)

17.5 kV Insulation

• Primary voltages (kV): 12-13.8-15. Insulation class: 17.5 kV BIL 75 kV
• (BIL 95 kV available on request)
• Secondary voltages no-load (V): 400-410-420 (insulation class 1.1 kV)

24 kV Insulation

• Primary voltages (kV): 20-23. Insulation class: 24 kV BIL 95 kV
• (BIL 125 kV available on request)
• Secondary voltages no-load (V): 400-410-420 (insulation class 1.1 kV)

36 kV Insulation

• Primary voltages (kV): 25-33. Insulation class: 36 kV BIL 170 kV
• Secondary voltages no-load (V): 400-420 (insulation class 1.1 kV)

Production

Standard Transformers

• Rated power: 100 – 3150 kVA
• Primary rated voltage: up to 36kV
• Secondary rated voltage: up to 433V

Special Transformers

• Rated power: up to 5 MVA
• Primary insulation level: up to 36kV
• Secondary insulation level: on request

Standard Equipment

• HV terminals (n°3 pieces)
• LV bar terminals (n°4 pieces)
• Offload tapping links (n°3 pieces)
• Rating plate (n°1 pieces)
• Lifting lugs (n°4 pieces)
• Earth terminals (n°2 pieces)
• Orientable rollers (n°4 pieces)

Accessories

• Pt100 thermosensors with connection box
• PTC thermistors (as an alternative to the Pt100 thermosensors)
• Electronic unit for thermal control, with inputs for Pt100 and temperature display
• Electronic unit for thermal control, with inputs for PTC, without temperature display
• Forced ventilation systems (for temporary power increase)
• Electronic unit for the ventilation system
• Transformer protective enclosure (degree protection IP23 & IP31)
• Surge arresters kit
• Antivibration pads

Special Requirements:

• HV terminals for plug-in connections (Elastimold)
• The antiseismic frame (in the base of the level of the earthquake)
• OLTC (On-Load Tap-Changers)
• CT and VT instrument transformer