NEMA TP-1 Energy-Efficient Tr · PDF file2013-03-06 · Volume 2—Commercial...

V2-T2-2 Volume 2Commercial Distribution CA08100003EFebruary 2013 www.eaton.com
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2.1 TransformersNEMA TP-1 Energy-Efficient Transformers
Type DT-3 ContentsDescription Page
NEMA TP-1 Energy-Efficient TransformersFeatures, Benefits and Functions . . . . . . . . . . . V2-T2-3Standards and Certifications . . . . . . . . . . . . . . . V2-T2-3Catalog Number Selection . . . . . . . . . . . . . . . . V2-T2-4Product Selection . . . . . . . . . . . . . . . . . . . . . . . V2-T2-4
Single-Phase Aluminum . . . . . . . . . . . . . . . . . V2-T2-4Single-Phase Copper . . . . . . . . . . . . . . . . . . . V2-T2-6Single-Phase Shielded Aluminum. . . . . . . . . . V2-T2-8Single-Phase Shielded Copper . . . . . . . . . . . . V2-T2-10Three-Phase Aluminum . . . . . . . . . . . . . . . . . V2-T2-12Three-Phase Copper. . . . . . . . . . . . . . . . . . . . V2-T2-23Three-Phase Shielded Aluminum . . . . . . . . . . V2-T2-34Three-Phase Shielded Copper . . . . . . . . . . . . V2-T2-42
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . V2-T2-50Technical Data and Specifications . . . . . . . . . . . V2-T2-50K-Factor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V2-T2-51
Aluminum. . . . . . . . . . . . . . . . . . . . . . . . . . . . V2-T2-52Copper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V2-T2-57
Product DescriptionNote: The following pages provide listings for most standard transformer ratings and styles. For other ratings or styles not shown, or for special enclosure types (including stainless steel), refer to Eaton.
Types DS-3, DT-3 Ventilated, NEMA 2
enclosure standard Suitable for indoor
applications, outdoors when weathershields are also installed
Upright mounting only 220C insulation system 150C rise standard;
115C or 80C rise optional Available in single-phase
ratings 15167 kVA, 600 volts primary (DS-3)
Available in three-phase ratings 151500 kVA and up to 600 volts primary (DT-3)
Application DescriptionNEMA 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.
The range of products covered by NEMA TP-1-2002 are:
NEMA TP-1-2002 Product Range
Transformers that are currently specifically excluded from the scope of NEMA Standard TP-1-2002 include:
Liquid-filled transformers below 10 kVA
Dry-type transformers below 15 kVA
AC and DC drives transformers
Rectifier transformers designed for high harmonics
Autotransformers Non-distribution
transformers, such as UPS transformers
Special impedance or regulation transformers
Regulating transformers Sealed and non-ventilated
transformers Machine tool transformers Welding transformers Transformers with tap
ranges greater than 15% Transformers with a
frequency other than 60 Hz Grounding transformers Testing transformers
Efficiency levels set forth in NEMA TP-1-2002.
NEMA TP-1-2002 Efficiency Levels
RatingVoltage Class Voltage
Primary voltage
34.5 kV and below
Secondary voltage
600V and below
Dry-TypeRating
Single-phase 10833 kVA
Three-phase 152500 kVA
Liquid Rating
Single-phase 10833 kVA
Three-phase 152500 kVA
Tables of Energy EfficiencyNEMA Class 1 Efficiency LevelsDry-Type Distribution TransformersLow Voltage (600V and below)Single-Phase Three-PhasekVA Efficiency kVA Efficiency
15 97.7 15 97.0
25 98.0 30 97.5
37.5 98.2 45 97.7
50 98.3 75 98.0
75 98.5 112.5 98.2
100 98.6 150 98.3
167 98.7 225 98.5
250 98.8 300 98.6
333 98.9 500 98.7
750 98.8
1000 98.9

Volume 2Commercial Distribution CA08100003EFebruary 2013 www.eaton.com V2-T2-3
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2.1TransformersNEMA TP-1 Energy-Efficient Transformers
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
Standards and Certifications UL listed
Industry StandardsAll Eaton dry-type distribution and control transformers are built and tested in accordance with applicable NEMA, ANSI and IEEE Standards. All 600 volt class transformers are UL listed unless otherwise noted.
Seismically QualifiedEaton manufactured dry-type distribution transformers are seismically qualified and exceed requirements of the Uniform Building Code (UBC), International Building Code (IBC) and California Code Title 24.

V2-T2-4 Volume 2Commercial Distribution CA08100003EFebruary 2013 www.eaton.com
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2.1 TransformersNEMA TP-1 Energy-Efficient Transformers
Catalog Number SelectionPlease refer to Section 2.7 Page V2-T2-185.
Product SelectionAdditional Product Selection information begins on Page V2-T2-187.
Single-PhaseType DS-3 60 Hz NEMA TP-1 Energy-EfficientAluminum Windings
208 Volts to 120/240 Volts
240 x 480 Volts to 120/240 Volts
Notes1 Weights subject to change.2 1 at +5%, 2 at 5% at 240 volts primary; 2 at +2.5%, 4 at 2.5% at 480 volts primary.3 480 volt primary only.
For other ratings or styles not shown, or for special enclosure types (including stainless steel), refer to Eaton. Frame drawings/dimensions information begins on Page V2-T2-213.
kVAFull Capacity Taps
TypeC Temp. Rise Frame
Wiring DiagramNumber
WeightLbs (kg) 1 Weathershield Style NumberFCAN FCBN
15 2 at +2.5% 4 at 2.5% DS-3 150 816 260A 226 (103) WS11 T29M11S15EE
25 2 at +2.5% 4 at 2.5% DS-3 150 818 260A 346 (157) WS11 T29M11S25EE
37.5 2 at +2.5% 4 at 2.5 DS-3 150 818 260A 374 (170) WS11 T29M11S37EE
50 2 at +2.5% 4 at 2.5% DS-3 150 819 260A 545 (247) WS16 T29M11S50EE
75 1 at +5% 2 at 5% DS-3 150 819 551A 568 (258) WS16 T29R11S75EE
100 1 at +5% 2 at 5% DS-3 150 814E 449A 1178 (535) WS13 T29R11S99EE
TypeC Temp.Rise Frame
15 2 2 DS-3 150 842 3XA 196 (89) WS45 T20P11515AEE
25 2 2 DS-3 150 842 3XA 261 (118) WS45 T20P11525AEE
37.5 2 2 DS-3 150 843 3XA 304 (138) WS43 T20P11537AEE
50 2 2 DS-3 150 843 3XA 396 (180) WS43 T20P11550AEE
75 2 2 DS-3 150 844 3XA 688 (312) WS44 T20P11S75AEE
100 2 2 DS-3 150 844 3XA 699 (317) WS44 T20P11S99AEE
167 2 at +2.5% 4 at 2.5% DS-3 150 814E 288A 1294 (587) WS13 T48M11S67EE 3
15 2 2 DS-3 115 816 3XA 246 (112) WS11 T20P11F15EE
25 2 2 DS-3 115 818 3XA 373 (169) WS11 T20P11F25EE
37.5 2 2 DS-3 115 818 3XA 380 (173) WS11 T20P11F37EE
50 2 2 DS-3 115 819 3XA 590 (268) WS16 T20P11F50EE
75 2 2 DS-3 115 820 3XA 691 (314) WS16 T20P11F75EE
100 2 2 DS-3 115 821 3XA 844 (383) WS13 T20P11F99EE
15 2 2 DS-3 80 818 3XA 360 (163) WS11 T20P11B15EE
25 2 2 DS-3 80 818 3XA 370 (168) WS11 T20P11B25EE
37.5 2 2 DS-3 80 819 3XA 565 (257) WS16 T20P11B37EE
50 2 2 DS-3 80 820 3XA 680 (309) WS16 T20P11B50EE
75 2 2 DS-3 80 821 3XA 900 (409) WS13 T20P11B75EE

Volume 2Commercial Distribution CA08100003EFebruary 2013 www.eaton.com V2-T2-5
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2.1TransformersNEMA TP-1 Energy-Efficient Transformers
Single-PhaseType DS-3 60 Hz NEMA TP-1 Energy-EfficientAluminum Windings
208 x 416 Volts to 120/240 Volts
Notes1 Weights subject to change.2 Contact your local Eaton sales office for these details.3 1 at +5%, 2 at 5% at 208 volts primary; 2 at +2.5%, 4 at 2.5% at 416 volts primary.
For other ratings or styles not shown, or for special enclosure types (including stainless steel), refer to Eaton. Frame drawings/dimensions information begins on Page V2-T2-213.
TypeC Temp.Rise Frame
15 2 at +2.5% 4 at 2.5% DS-3 150 816 262C 220 (100) WS11 T27M11S15EE
25 2 at +2.5% 4 at 2.5% DS-3 150 818 262C 346 (157) WS11 T27M11S25EE
37.5 2 at +2.5% 4 at 2.5% DS-3 150 818 262C 391 (178) WS11 T27M11S37EE
50 2 at +2.5% 4 at 2.5% DS-3 150 819 262C 555 (252) WS16 T27M11S50EE
75 1 at +5% 2 at 5% DS-3 150 819 2 568 (258) WS16 T27R11S75EE
100 1 at +5% 2 at 5% DS-3 150 814E 2 1178 (535) WS13 T27R11S99EE
kVAFull Capaci

NEMA TP-1 Energy-Efficient Tr · PDF file2013-03-06 · Volume 2—Commercial...

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