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Encapsulated Transformer

Product Overview & Application

Slide1

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

Features & Benefits

Slide2

  • 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)

Product Specification

Capacity  3 to 125 kVA Single Phase and 5 to 150 kVA Three Phase
Voltage Class  600V
Cooling  Self Cooled (ANC)
Frequency  60Hz (50/60Hz Optional)
Conductors  Copper (Cu) or Aluminum (Al) Windings
Insulation System  200°C (130°C rise) (Optional 115°C & 80°C Rise Available)
Impregnation  N/A (Core & Coil Are Encapsulated In a Block of Polyeurethane 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 (Refer to Catalog)
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
  • 115°C or 80°C Remperature Rise
  • 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
  • Type 4 or 4X Enclosure 
  • 304 or 316L Stainless Steel Enclosure
  • Custom Enclosure Finish (Color)

Common Part Numbers & Typical Information

Typical Sizes 1-Phase 600-120/240 1-Phase 480-120/240 Approximate Weight Enclosure Size No. Dimensions WxDxH (inch)
0.25 kVA SC0.250J-K/EP SC0.250H-K/EP 17 LBS E3R-1PEP-1 5.20 x 4.44 x 8.72
0.50 kVA SC0.500J-K/EP SC0.500H-K/EP 20 LBS E3R-1PEP-1 5.20 x 4.44 x 8.72
0.75 kVA SC0.750J-K/EP SC0.750H-K/EP 23 LBS E3R-1PEP-2 5.94 x 5.20 x 9.72
1 kVA SC1J-K/EP SC1H-K/EP 27 LBS E3R-1PEP-2 5.94 x 5.20 x 9.72
1.5 kVA SC1.5J-K/EP SC1.5H-K/EP 40 LBS E3R-1PEP-3 7.50 x 6.38 x 11.22
2 kVA SC2J-K/EP SC2H-K/EP 45 LBS E3R-1PEP-3 7.50 x 6.38 x 11.22
3 kVA SC3J-K/EP SC3H-K/EP 55 LBS E3R-1PEP-3 7.50 x 6.38 x 11.22
5 kVA SC5J-K/EP SC5H-K/EP 155 LBS E3R-1PEP-4 12.50 x 12.50 x 15.06
7.5 kVA SC7J-K/EP SC7H-K/EP 210 LBS E3R-1PEP-4 12.50 x 12.50 x 15.06
10 kVA SC10J-K/EP SC10H-K/EP 230 LBS E3R-1PEP-5 15.00 x 15.00 x 18.15
15 kVA SC15J-K/EP SC15H-K/EP 296 LBS E3R-1PEP-5 15.00 x 15.00 x 18.15
25 kVA SC25J-K/EP SC25H-K/EP 310 LBS E3R-1PEP-6 18.00 x 14.00 x 24.56
37.5 kVA SC37J-K/EP SC37H-K/EP 625 LBS E3R-1PEP-7 19.00 x 16.00 x 28.10
50 kVA SC50J-K/EP SC50H-K/EP 750 LBS E3R-1PEP-7 19.00 x 16.00 x 28.10

 

Typical Sizes 3-Phase 600-208Y/140 3-Phase 480-208Y/140 Approximate Weight Enclosure Size No. Dimensions WxDxH (inch)
1.5 kVA BC1.5J-M/EP BC1.5H-M/EP 145 LBS E3R-3PEP-1 11.00 x 10.00 x 15.25
2 kVA BC2J-M/EP BC2H-M/EP 150 LBS E3R-3PEP-1 11.00 x 10.00 x 15.25
3 kVA BC3J-M/EP BC3H-M/EP 175 LBS E3R-3PEP-2 15.00 x 11.00 x 15.13
6 kVA BC6J-M/EP BC6H-M/EP 185 LBS E3R-3PEP-2 15.00 x 11.00 x 15.13
9 kVA BC9J-M/EP BC9H-M/EP 240 LBS E3R-3PEP-3 18.00 x 12.50 x 17.06
15 kVA BC15J-M/EP BC15H-M/EP 350 LBS E3R-3PEP-4 21.00 x 14.00 x 17.62
30 kVA BC30J-M/EP BC30H-M/EP 520 LBS E3R-3PEP-5 21.00 x 18.00 x 19.81
45 kVA BC45J-M/EP BC45H-M/EP 775 LBS E3R-3PEP-6 26.00 x 18.00 x 25.00
75 kVA BC75J-M/EP BC75H-M/EP 1298 LBS E3R-3PEP-7 32.00 x 18.00 x 25.00
112.5 kVA BC112J-M/EP BC112H-M/EP 1365 LBS E3R-3PEP-8 36.00 x 25.00 x 31.50

Documentation