Specifications:
- Voltage tappings for windings, earthed copper screen between windings, and stand still heating.
- Pt-100 (3-wire) temperature sensors for windings and core, air and water temperature sensors for AFWF transformers.
- Local temperature display with alarm/trip/sensors fault/4…20 mA analog output functions.
- Anti-vibration dampers, bi-directional castors, air flow detectors for transformers with forced cooling.
- Integrated pre-magnetizing transformer with control unit, starter unit for fan motors, thermal inspection windows, surge arrestors, integrated fuses, and current transformers.
- Custom-made solutions available.

Auxiliaries for Transformers:
- Power range: 630 kVA - 12.5 MVA.
- Core technology: 45° step lap, M5, painted.
- Voltage classes: HV side Um 3.6 / 7.2 / 12 / 17.5 / 24 kV, LV side Um 1.1 / 3.6 / 7.2 kV.
- Insulation technology: HV side - Cast Resin, Insulation class F/155°C; LV side - Prepreg (VPI on request), Insulation class H/180°C.
- Winding Material: HV - Al foil; LV - Al foil (Cu on request).
- Solutions for frequency converters with 2/3/4/5-winding transformers and phase shift winding on primary side.
- Cooling solutions: AN, AN/AF, AFWF.

Design Focus:
- Size: Small footprint due to optimized core construction, efficient cooling, and intelligent structural solutions.
- Speed: Efficient lead time with modular product design and 2D/3D FEM simulations. Full design documentation provided at the quotation phase.
- Ease of Installation: All main connections in one location with adequate free space for connections. Fully dismountable housing and normally just one external Auxiliary Connection Box (IP55).
- Strength: Designed for marine duty applications, durable construction capable of withstanding vibration and shock, qualified for severe conditions. Classifications: E2, C2, F1.

Company Information:
- Trafotek transformers are designed to meet customer requirements in demanding applications, focusing on transformers for frequency converters and special applications.
- Product range: 1 kVA low voltage transformers up to 20 MVA cast resin transformers and voltages up to 24 kV.

Contact Information:
- Trafotek Finland (HQ): Kaarinantie 700, FI-20540 Turku, Finland. Tel: +358 2 275 9200, Fax: +358 2 275 9210.
- Trafotek Singapore: Sales Office, 1 North Bridge Road, #12-01 High Street Centre, 179094 Singapore. Tel: +65 9726 1076.
- Website: www.trafotek.fi