Encapsulated Transformers

Encapsulated (Potted) Transformers (also referred to as Epoxy Resin Encapsulated) are designed for applications where the environmental conditions would not permit a general purpose ventilated dry type transformer. The entire transformer core & coil is encased in a silica sand / polyurethane mixture which protects the windings from any airborne contaminants and moisture.

Typical areas of use include:

Corrosive Environments: Petro-Chemical, steel, pulp and paper industries
Damp conditions: Mines, pump-houses underground or rooftop service areas
Industrial applications: processes with high degree of airborne dust or conductive particles

Mixture of silica sand resin forming a solid mass completely encloses and protects the core and coil, also significantly reduces audible noise.
Windings utilize Class 220°C Insulating rated for 150°C Rise, but designed to operate at 115°C maximum.
The transformer’s core is solidly grounded.
Enclosure constructed from heavy gauge steel, coated with ASA#61 grey powder paint
Suitable for NEMA/CSA Type 3R and Type 4 Enclosure applications for both indoor and outdoor
Spacious wiring compartment, cool and easily accessible (bottom or front access may depend on size)

Capacity	Single Phase: 3 to 125 kVA Three Phase: 5 to 150 kVA
Voltage Class	600V
Cooling	Self Cooled (ANC)
Frequency	60Hz (50/60Hz Optional)
Conductors	Copper (Cu) or Aluminum (Al) Windings
Temperature Rise	130°C rise (115°C & 80°C Optional)
Insulation System	200°C
Impregnation	Core & Coil Are Encapsulated In a Block of Polyurethane and Silica Sand
Primary Taps	Typically +/-2 x 2.5% Raps (Refer To Dry Type Distribution Transformer Catalog)
Sound Level	Meets NEMA ST-20
Enclosure Type	Type 3R Indoor/Outdoor (Type 4 or 4X Optional)
Enclosure Finish	ANSI/ASA 61 Grey
Warranty	12 Months (See Warranty and Limitations)
Quality System	ISO 9001:2015 Quality Management System
Certifications	CSA Certified UL Listed
Reference Standards	CSA C22.2 No 47 CSA C9 IEEE C57.12.01 IEEE C57.12.91 NEMA ST-20
Optional Features & Accessories	Suitable for 50Hz Nominal Frequency Thermal Sensing & Indication Thermometers (Analog/Digital) Thermostat Alarm / Trip (N.O. /N.C. contacts) Electrostatic Shielding K-Factor Rated to Handle Current Harmonics (K4, K9, K13, K20) Surge Protection Devices External Anti-Vibration Pads 304 or 316L Stainless Steel Enclosure Custom Enclosure Finish (Color)

Typical areas of use include:

Corrosive Environments: Petro-Chemical, steel, pulp and paper industries
Damp conditions: Mines, pump-houses underground or rooftop service areas
Industrial applications: processes with high degree of airborne dust or conductive particles

Mixture of silica sand resin forming a solid mass completely encloses and protects the core and coil, also significantly reduces audible noise.
Windings utilize Class 220°C Insulating rated for 150°C Rise, but designed to operate at 115°C maximum.
The transformer’s core is solidly grounded.
Enclosure constructed from heavy gauge steel, coated with ASA#61 grey powder paint
Suitable for NEMA/CSA Type 3R and Type 4 Enclosure applications for both indoor and outdoor
Spacious wiring compartment, cool and easily accessible (bottom or front access may depend on size)

Capacity	Single Phase: 3 to 125 kVA Three Phase: 5 to 150 kVA
Voltage Class	600V
Cooling	Self Cooled (ANC)
Frequency	60Hz (50/60Hz Optional)
Conductors	Copper (Cu) or Aluminum (Al) Windings
Temperature Rise	130°C rise (115°C & 80°C Optional)
Insulation System	200°C
Impregnation	Core & Coil Are Encapsulated In a Block of Polyurethane and Silica Sand
Primary Taps	Typically +/-2 x 2.5% Raps (Refer To Dry Type Distribution Transformer Catalog)
Sound Level	Meets NEMA ST-20
Enclosure Type	Type 3R Indoor/Outdoor (Type 4 or 4X Optional)
Enclosure Finish	ANSI/ASA 61 Grey
Warranty	12 Months (See Warranty and Limitations)
Quality System	ISO 9001:2015 Quality Management System
Certifications	CSA Certified UL Listed
Reference Standards	CSA C22.2 No 47 CSA C9 IEEE C57.12.01 IEEE C57.12.91 NEMA ST-20
Optional Features & Accessories	Suitable for 50Hz Nominal Frequency Thermal Sensing & Indication Thermometers (Analog/Digital) Thermostat Alarm / Trip (N.O. /N.C. contacts) Electrostatic Shielding K-Factor Rated to Handle Current Harmonics (K4, K9, K13, K20) Surge Protection Devices External Anti-Vibration Pads 304 or 316L Stainless Steel Enclosure Custom Enclosure Finish (Color)