Dry Type Transformers
Dry Cast Resin Transformers of up to 5000 kVA are manufactured at 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
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Product Range
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Cast Resin Transformers Up to 5000 kVA
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%, and any special tapping required
- Thermal class of the insulating system: 155 °C (F) / 155 °C (F) or Class H (180 degree)
- Temperature rise: 100/100 K
- Class of use: E3-C2-F1 Certified CESI A9032391 IEC 60076-11
- Tolerances: According to IEC /CEI, BS, IEEE, etc.
- Partial discharge < 10 pC, and special request< 5 Pc
- Cast HV/ Cast LV , Cast /LV VPI
- K-Factor Transformers
- Rectifier transformers
- Isolation transformers
- TOVP Transformer
- OUT Door IP54
- MV/MV transformers
- ON load Tap changer
- Smart Transformers
Compliance
- IEC 60076-11/IEC 60068-3-3
- IEC 60529
- IEC 60616/IEC 62032
Certifications
- Fully TYpe Tested – CESI Italy
- E2-C2-F1 Certified CESI A9032391
- SASO
- Seismic
Protection
- IP-21/23/31, IP44, IP54
12 kV Insulation
- Primary voltages (kV): 6-10-11. Insulation class: 12 kV BIL 75kV
- Secondary voltages no-load (V): 400-433 (insulation class 1.1 kV), or any other special requirements
17.5 kV Insulation
- Primary voltages (kV): 12-13.8-15. Insulation class: 17.5 kV BIL 95 kV
- Secondary voltages no-load (V): 400-410-420 (insulation class 1.1 kV), or any other special requirements
24 kV Insulation
- Primary voltages (kV): 20-23. Insulation class: 24 kV BIL 125 kV
- Secondary voltages no-load (V): 400-410-420 (insulation class 1.1 kV), or any other special requirements
36 kV Insulation
- Primary voltages (kV): 25-33. Insulation class: 36 kV BIL 170 kV or 200 kV
- Secondary voltages no-load (V): 400-420 (insulation class 1.1 kV), or any other special requirements
Standard Transformers
- Rated power: 100 – 5,000 KVA
- Primary rated voltage: up to 36k
- Secondary rated voltage: 110 , 220 , 400 , 433 , 1 kV….. up to 17.5 kV
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)
- Off load 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), or continuous operation
- Electronic unit for ventilation system
- Transformer protective enclosure (degree protection IP21, IP23, IP31, IP44 & IP54)
- Surge arresters kit, Surge counters
- Antivibration pads, Roller Dampers
- BMS , SCADA …etc connection through MODBUS RS485 or ETH ,IP, etc.
- Cable boxes
- Busway arrangements
Special Requirements
- HV terminals for plug-in connections (Elastimold)
- Anti-seismic frame (in base of level of earthquake)
- OLTC (On-Load Tap-Changers)
- CT and VT instrument transformer