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NEMA TP-1 Energy-Efficient Transformers
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H29R47F12CUNVLS52 - Eaton H29R47F12CUNVLS52 - Eaton Cutler-Hammer, 112.5 KVA K4 TENV TRANSFORMER 3PH 208 DELTA - 480Y/277 115C RISE

H29R47F12CUNVLS52 - Eaton Cutler-Hammer, 112.5 KVA K4 TENV TRANSFORMER 3PH 208 DELTA - 480Y/277 115C RISE

Price: $49,819.37
H48M28F12CUNVLS52 - Eaton H48M28F12CUNVLS52 - Eaton Cutler-Hammer, 112.5 KVA K4 TENV TRANSFORMER 3PH 480 DELTA - 208Y/120 115C RISE

H48M28F12CUNVLS52 - Eaton Cutler-Hammer, 112.5 KVA K4 TENV TRANSFORMER 3PH 480 DELTA - 208Y/120 115C RISE

Price: $43,322.07
H48M47T55CUEE - Eaton H48M47T55CUEE - Eaton Cutler-Hammer, 500 kVA Vented Transformer K-4 3-Ph 480Delta-480Y/277 150C rise

H48M47T55CUEE - Eaton Cutler-Hammer, 500 kVA Vented Transformer K-4  3-Ph 480Delta-480Y/277 150C rise

Price: $80,008.49
MV48M28F55CUEE - Eaton MV48M28F55CUEE - Eaton Cutler-Hammer, 500 kVA Marine Duty Transformer 3-PH Vented 480-208Y/120

MV48M28F55CUEE - Eaton Cutler-Hammer, 500 kVA Marine Duty Transformer 3-PH Vented 480-208Y/120

Price: $83,874.00
N38M28T12XCU - Eaton N38M28T12XCU - Eaton Cutler-Hammer, 112.5 K-13 Vented Transformer, 3PH, 380 Delta - 208Y/120 150C rise

N38M28T12XCU - Eaton Cutler-Hammer, 112.5 K-13 Vented Transformer, 3PH, 380 Delta - 208Y/120 150C rise

Price: $25,707.04
N38M37T22XCU - Eaton N38M37T22XCU - Eaton Cutler-Hammer, 225 KVA K-13 VENTED TRANSFORMER 3PH 380 DELTA-380Y/220 150C RISE

N38M37T22XCU - Eaton Cutler-Hammer, 225 KVA K-13 VENTED TRANSFORMER 3PH 380 DELTA-380Y/220 150C RISE

Price: $41,920.07
N39M28T12XCU - Eaton N39M28T12XCU - Eaton Cutler-Hammer, 112.5 KVA K-13 VENTED TRANSFORMER 3PH 400 DELTA-208Y120 150C RISE

N39M28T12XCU - Eaton Cutler-Hammer, 112.5 KVA K-13 VENTED TRANSFORMER 3PH 400 DELTA-208Y120 150C RISE

Price: $25,745.57
N39M28T12XCUNV - Eaton N39M28T12XCUNV - Eaton Cutler-Hammer, 112.5 KVA K13 TENV TRANSFORMER3PH 400-208Y/120 150C RISE

N39M28T12XCUNV - Eaton Cutler-Hammer, 112.5 KVA K13 TENV TRANSFORMER3PH 400-208Y/120 150C RISE

Price: $35,942.36
N39M28T49XCU - Eaton N39M28T49XCU - Eaton Cutler-Hammer, 150 KVA K13 VENTED TRANSFORMER 3PH 400DELTA-208Y/120 150C RISE

N39M28T49XCU - Eaton Cutler-Hammer, 150 KVA K13 VENTED TRANSFORMER 3PH 400DELTA-208Y/120  150C RISE

Price: $33,344.64
N48M28B49CUNV - Eaton N48M28B49CUNV - Eaton Cutler-Hammer, 150 KVA K13 TENV TRANSFORMER 3PH 480-208Y/120 80C RISE

N48M28B49CUNV - Eaton Cutler-Hammer, 150 KVA K13 TENV TRANSFORMER 3PH  480-208Y/120 80C RISE

Price: $85,225.50
N48M28F30CUNVLS45 - Eaton N48M28F30CUNVLS45 - Eaton Cutler-Hammer, 30 KVA K13 NON-VENTED TRANSFORMER 3PH 480DELTA-208Y/120 115C RISE

N48M28F30CUNVLS45 - Eaton Cutler-Hammer, 30 KVA K13 NON-VENTED TRANSFORMER 3PH 480DELTA-208Y/120 115C RISE

Price: $14,731.03
N48M28F75CUNVSS - Eaton N48M28F75CUNVSS - Eaton Cutler-Hammer, 75 KVA K13 NON-VENTED TRANSFORMER 3PH 480 DELTA-208Y/120 115C RISE

N48M28F75CUNVSS - Eaton Cutler-Hammer, 75 KVA K13 NON-VENTED TRANSFORMER 3PH 480 DELTA-208Y/120 115C RISE

Price: $33,644.19
N48M47T55EE - Eaton N48M47T55EE - Eaton Cutler-Hammer, 500 kVA Vented Transformer K-13 3-Ph 480Delta-480Y/277 150C rise

N48M47T55EE - Eaton Cutler-Hammer, 500 kVA Vented Transformer K-13  3-Ph 480Delta-480Y/277 150C rise

Price: $58,502.46
   
 
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NEMA TP-1 Energy-Efficient Transformers

Types DS-3, DT-3

  • Ventilated, NEMA 2 enclosure standard
  • Suitable for indoor applications, outdoors when weathershields are also installed
  • Upright mounting only
  • 220ºC insulation system
  • 150ºC rise standard; 115°C or 80°C rise optional
  • Available in single-phase ratings 15–167 kVA, 600 volts primary (DS-3)
  • Available in three-phase ratings 15–1500 kVA and up to 600 volts primary (DT-3)
Application Description
NEMA TP-1-2002 compliant energy-efficient transformers are specifically designed to meet the energy efficiency standards set forth in NEMA Standards publication, TP-1- 2002, “Guide for Determining Energy Efficiency for Distribution Transformers.” Surveys have shown that the average loading of low voltage dry-type distribution transformers, over a 24-hour period, is approximately 35%. NEMA TP-1 compliant transformers are optimized to offer maximum efficiency at 35% of nameplate rating.

Features, Benefits and Functions

  • 60 Hz operation (except as noted)
  • Short-term overload capability as required by ANSI
  • Meet NEMA ST-20 sound levels
  • Meet federal energy efficiency requirements for low voltage dry-type distribution transformers effective as of January 1, 2007