View our Small & Medium Power Transformer Brochure

Single Phase and Three Phase Small Power Transformers are available in a variety of configurations in accordance with the latest versions of CSA, ANSI, and IEC Specifications.

These transformers can also be customized to meet the requirements of individual industrial, commercial, and utility specifications.

The transformers can be provided with a variety of terminations to meet customer requirements for new installations, replacement or retrofit situations.

A variety of cooling fluids are also available to meet the necessary flame retardent and/or environmental conditions.

Transformers are generally of Shell Type Construction and are available up to 5000kva and 69Kv Insulation Class.

All features listed as standard in the appropriate CSA, ANSI, or IEC Standard. These are generally as listed below.

• Fully Mitred Step-Lap Core Design
• Circular Coil Construction
• Externally Operated De-Energized Tapswitch
• Provision for Lifting and Jacking
• Primary and Secondary terminations in the form of:
  • Cover Mounted Bushings
  • Sidewall or Cover Mounted Throats
  • Sidewall, Top or Bottom Entry, Cable Junction Boxes
• Tank Base suitable for Hauling or Skidding
• Stainless Steel faced Ground Pads
• Standard Powder Coat Paint Finish
• Standard Finish Colours:
  • ASA 70 Grey - (Munsell 5.0 BG 7.0/0.4)
  • Equipment (Dark) Green - (Munsell 9 GY 1.5/2.6)
  • Seafoam Green - (Munsell 4.82 G 4.07/3.35)
• See page giving details of standard method of Radiator Mounting
• Supplied with 55C, 65C, or dual 55/65C temperature rise. Look below to Table 2 for uprating details. For Cooling class designations table click here.

Table 1 - Standard Accessories

Table 2 - ONAN/ONAF & 55/65C Kva Ratings

All features listed as "optional extras" in the appropriate CSA, ANSI, or IEC Standard. These can include such items as listed below.

• 50Hz designs
• 55C or 55/65C temperature rise designs
• Fan Cooling Package(s) for ONAF operation
• Special designs for high ambient temperature site conditions
• Special designs for high altitude, over 1000m, site conditions
• Multiple Voltage Primary or Secondary Windings
• Special de-energized tap ranges
• All copper winding designs
• Alternate cooling liquids for less-flammable or environmental requirements
• Primary and Secondary Lightning Arresters as Distribution, Intermediate, or Station Class
• Lightning Arrester Discharge Counters
• Primary, Secondary, and Neutral Current Transformers for Relaying or Metering Applications
• On Load Tapchanging Equipment
• Neutral Grounding Resistors
• Winding Temperature Indicators
• Sudden Pressure (Rapid Rise) Relay
• Conservator Design
• Gas Detector Relay
• Silica Gel Dehydrating Breather
• Detachable Cooling Radiators with Shut Off Valves
• Pressure Vacuum Bleeder Device
• Various contact arrangements on all devices and gauges
• Water Coolers in lieu of traditional cooling radiators
• Special designs to match existing equipment locations
• Ground Fault Protection
• Siesmic Boltdown and Certification
• Special Paint Finishes for corrosive environments
• Special Finish Colours

Many other features, protective devices, components, and variations are available upon request.

Typical Outline Drawing

Single Phase and Three Phase Medium Power Transformers are available in a variety of configurations in accordance with the latest versions of CSA, ANSI, and IEC Specifications.

These transformers can also be customized to meet the requirements of individual industrial, commercial, co-generation and utility specifications.

The transformers can be provided with a variety of terminations to meet customer requirements for new installations, replacement or retrofit situations.

A variety of cooling fluids are also available to meet the necessary environmental conditions.

Transformers are generally of Core Type Construction and are available up to base rating of 30MVA at 145kV with or without Load Tapchanging Equipment.

All features listed as standard in the appropriate CSA, ANSI, or IEC Standard. These are generally as listed below.

• Externally Operated De-Energized Tapswitch
• Provision for Lifting and Jacking
• Primary and Secondary terminations in the form of:
  • Cover Mounted Bushings
  • Sidewall or Cover Mounted Throats
  • Sidewall, Top or Bottom Entry, Cable Junction Boxes
• Tank Base suitable for Hauling or Skidding
• Stainless Steel faced Ground Pads
• Standard Powder Coat Paint Finish
• Standard Finish Colours:
  • ASA 70 Grey - (Munsell 5.0 BG 7.0/0.4)
  • Equipment (Dark) Green - (Munsell 9 GY 1.5/2.6)
  • Seafoam Green - (Munsell 4.82 G 4.07/3.35)
• See page giving details of standard method of Radiator Mounting
• Supplied with 55C, 65C, or dual 55/65C temperature rise. Look below to Table 2 for uprating details. For Cooling class designations table click here.

Table 1 - Standard Accessories

Table 2 - ONAN/ONAF & 55/65C Kva Ratings

All features listed as "optional extras" in the appropriate CSA, ANSI, or IEC Standard. These can include such items as listed below.

• 50Hz designs
• 55C or 55/65C temperature rise designs
• Fan Cooling Package(s) for ONAF operation
• Special designs for high ambient temperature site conditions
• Special designs for high altitude, over 1000m, site conditions
• Multiple Voltage Primary or Secondary Windings
• Special de-energized tap ranges
• All copper winding designs
• Alternate cooling liquids for less-flammable or environmental requirements
• Primary and Secondary Lightning Arresters as Distribution, Intermediate, or Station Class
• Lightning Arrester Discharge Counters
• Primary, Secondary, and Neutral Current Transformers for Relaying or Metering Applications
• On Load Tapchanging Equipment
• Neutral Grounding Resistors
• Winding Temperature Indicators
• Sudden Pressure (Rapid Rise) Relay
• Conservator Design
• Gas Detector Relay
• Silica Gel Dehydrating Breather
• Detachable Cooling Radiators with Shut Off Valves
• Pressure Vacuum Bleeder Device
• Various contact arrangements on all devices and gauges
• Water Coolers in lieu of traditional cooling radiators
• Special designs to match existing equipment locations
• Ground Fault Protection
• Siesmic Boltdown and Certification
• Special Paint Finishes for corrosive environments
• Special Finish Colours

Many other features, protective devices, components, and variations are available upon request.