Mining transformers are designed for use in flame-proof, solid enclosures which are often transported on large mining machines. The casings of these transformers must meet the requirements of mining standards relating to flame-proof resistance and they also have to possess very limited dimensions– that is why the transformers for these casings are relatively low

Manufacturing range:

Power range:  from 160kVA up to 3000 kVA
Voltage range: up to 36 kV
Isulation class: H
Type of cooling: AN

Standard operating conditions:

Max. operating altitude – 1000 m above sea level
Operating temperature range – 25 to + 40 °C or other on request
Rated frequency 50 Hz (60 Hz on request)

Design characteristic:

Core– grain-oriented electrical steel sheets
assembled into core using the “Step-Lap” method
Winding  – electrolytic copper wire or foil

Standard equipment:

Thermal protection
PT100 or PTC Sensors
Rating plate
Earthing terminals
Pulling lugs

Making, testing & loss levels, tolerance ranges are in compliance with IEC 60076-1, IEC 60076-11, IEC 60076-6