• Wilson Power And Distribution Technologies Private Limited

Liquid Filled Transformers

Wilson Power and Distribution Technologies Private Limited (WPDT) is an associate of Richard Wilson (Dencol) Ltd and Power and Distribution Transformers Ltd, Leeds, UK. The company manufactures and supply power and distribution transformers, cast resin transformers, unit substations and package substations. These transformers are manufactured from cold rolled grain oriented (CRGO) magnetic steel sheets with high magnetic permeability and insulated on both sides with a thin layer of inorganic material (carpe). The sheet cut and the composition at 45° with "step lap" interlaced joints guarantee reduced no-load losses, reduced no load current and low noise level. The number of steps and the magnetic induction are optimised for the power of the transformer. Test reports and witnessed tests: all transformers are routine tested in our test lab according to IEC 60076 standards; and all transformers are delivered with maintenance manual, test report, technical drawing and all necessary certificates.
Standard accessories:

• Oil conservator mounted on the tank top cover (for non hermetically sealed transformers)
• Oil level indicator on the conservator (for non hermetically sealed transformers)
• MV regulation tappings ±2X2.5% wired to off-circuit tap changing switch with external operating handle
• MV, fully insulated porcelain bushings, 3 off, meeting width DIN 42531 requirements or cable box bushings as per BS 2562
• LV porcelain bushings, 3 off line terminals plus neutral bushing, meeting with DN 42530 requirements or monoblocks as per BS 2562
• Oil filler cap
• Oil drain valve
• Bi-directional rollers
• Rating and diagram plate meeting with IEC 60076 requirements
• Lifting lugs/eyebolts
• Earthing terminals
• Thermometer pocket.

Buchholz relay with 2 electrical contacts
• Dehydrating breather (for non hermetically sealed transformers)
• Oil level indicator contacts on the conservator (for non hermetically sealed transformer)
• Pressure relief valve (hermetically sealed transformers)
• Winding temperature indicator with contacts
• Oil temperature indicator with contacts
• Protection housing IP 55 for LV bushings
• Protection housing IP 55 for MV bushings
• Pressure relay with 2 electrical contacts
• Electrostatic screen between primary and secondary voltage.