PRODUCT PREVIEW
Transformers
Project-specific power transformation
Wafr supplies three-phase pad-mounted transformers for underground power distribution. Units are available in live-front or dead-front construction, with radial or loop-feed arrangements, copper or aluminum windings, and a range of protection and accessory options.
Specification
Configuration
Power Rating
75 to 7,500 kVA
Primary Voltage
11 to 40.5 kV
Frequency
50 / 60 Hz
Feed Arrangement
Radial or Loop
HV Terminals
Live Front or Dead Front
Winding Options
Copper or Aluminum
Core
Precision-cut, burr-free, grain-oriented silicon steel, with multiple grades available to optimize core-loss efficiency.
Coils
Rectangular coil construction with wire-wound high-voltage primaries and sheet-wound secondaries, designed to minimize axial stress under short-circuit conditions and provide magnetic balancing of tap connections.
Core & Coil Assembly
Core and coil assemblies are braced with heavy steel ends to help prevent distortion under short-circuit conditions.
Cores: Cores are manufactured with precision cut, burr-free, grain-oriented silicon steel. Many grades of core steel are available for optimizing core loss efficiency.
Coils: Pad-mounted transformers feature a rectangular coil configuration with wire-wound, high-voltage primaries and sheet-wound secondaries. The design minimizes axial stress developed by short circuits and provides for magnetic balancing of tap connections. Coils are wound using the highest quality winding machines providing exacting tension control and conductor placement for superior short-circuit strength and maximum efficiency.
Core and coil assemblies: Pad-mounted transformer core and coil assemblies are braced with heavy steel ends to prevent the rectangular coil from distorting under short-circuit conditions. Plates are clamped in place using presses, and welded or bolted to form a solid core and coil assembly.
Key Features
Wafr performs routine testing on each transformer manufactured including the following tests.
