JEFFERSON Cabinet Style Transformers Three-Phase 15 to 1000 KVA

Transcription

1 JEFFERSON Cabinet Style Transformers Three-Phase 15 to 1000 KVA TYPICAL APPLICATIONS All general loads, indoors or outdoors, including lighting, industrial & commercial Schools Hospitals Factories Office buildings Housing complexes Amusement parks For the name of your local representative, or for technical assistance, call

2 30 Three-Phase Cabinet Style features & benefits Designed for lower weight and smaller size, for easier installation and handling. Heavy-duty sheet metal enclosures for better durability in severe industrial applications. Large connection compartment for ease of wiring and installation. Electrostatic-shield to reduce electrical noise. Heat applied ASA-61 Gray Powder Coat Finish to resist corrosion in industrial environments. Quiet operation for more flexibility in choice of mounting locations. Type NEMA 3R outdoor enclosures for all units except KVA which are NEMA 1. Optional weathershields available to protect against rain, sleet or ice for outdoor applications. Cores made from high quality electrical steel for increased efficiency and lower operating costs. Built in accordance with ANSI C Wall mount brackets available for 75 KVA and smaller for 150 C rise units. 220 C insulation system standard with 150 C temperature rise for longer, more reliable life. Low temperature 115 C and 80 C rise units also available. Meets or exceeds all applicable NEMA, ANSI, OSHA, UL and CSA (223 Series) or C-UL (423 Series) requirements. Taps provided on primary to compensate for voltage variations. Made in U.S.A.

3 THREE-PHASE CABINET STYLE Standard construction features This drawing is for illustration purposes only. Please contact factory for construction details. Electrostatic shielding as standard, enhances performance Standard enclosure NEMA 1 for indoor applications (weathershields available for outdoor applications) Lifting eyes available for easy installation through removable cover Tightly stacked electrical steel core provides lower losses and low noise Standard aluminum coils offer economical solution Front loop taps are staggered for easy connection Vibration isolation pads provide quiet operation Flexible core ground strap Ground stud bolt High voltage terminals and low voltage terminals are staggered up and down sequentially for quick connections Large conduit entry point access to clutter free 75 C wiring compartment Side or bottom conduit access for convenient mounting options Fiberglass terminal board Punched bottom ventilations allow maximum air flow and rodent protection 31

4 32 THREE-PHASE CABINET STYLE General Purpose Three-Phase 600V Class Standard Application Voltages Cabinet Style Electrostatic Shielded Y/ 15* * * * E Yes % A No B ** 15* * * * F Yes % D No C Y/ 15* * * E 75* Yes % F CAUTION: When using the V center tap for single-phase applications, the single-hase load should not exceed 5% of the three-phase KVA rating. Connect the X3 high leg to the B phase per NEC (do not use for V lighting!). A separate single-phase transformer should be used if the single-phase load is in excess of 5%. NOTE: KVA Housing dimensions subject to change without notice. Contact factory where dimensions are critical. Catalog Number Dimensions (Inches) Temp. Shielded Taps Rise Height Width Depth C Figure A B C * Wall brackets available for units 15 KVA through 75 KVA Cat. No ** Volt Center Tap on center coil, 15 KVA through 500 KVA. Wiring Diagram Approx. Ship Wt. (lbs)

5 THREE-PHASE CABINET STYLE General Purpose Three-Phase 600V Class Standard Application Voltages Cabinet Style Electrostatic Shielded KVA Catalog Number 15* * * A 75* Yes % C Y/ 15* * * B 75* Yes % D NOTE: Housing dimensions subject to change without notice. Contact factory where dimensions are critical. * Wall brackets available for units 15 KVA through 75 KVA Cat. No Dimensions (Inches) Temp. Shielded Taps Rise Height Width Depth C Figure A B C 33 Wiring Diagram Y/277 Cabinet Style 15* * * * % A Yes % % B Y/ Cabinet Style 15* * * * % C Yes % % D Y/277 Approx. Ship Wt. (lbs)

6 THREE-PHASE CABINET STYLE Wiring Diagram 30A : 480 Delta : 208Y/ TAPS: 2, 2.5% ; 4, 2.5% and 2 H1, H2, H and 4 H1, H2, H and 3 H1, H2, H and 4 H1, H2, H and 5 H1, H2, H and 5 H1, H2, H and 6 H1, H2, H3 Between X0 and 1 Phase X1 or X2 or X3 Wiring Diagram 30C : 480 Delta : 240 Delta/ TAPS: 2, 2.5% ; 2, 2.5% and 2 H1, H2, H and 3 H1, H2, H and 4 H1, H2, H and 5 H1, H2, H and 6 H1, H2, H3 240 X1, X2, X3 X1 and X4 or X2 and X4 Wiring Diagram 30B : 480 Delta : 208Y/ TAPS: 2, 2.5% ; 2, 2.5% and 6 H1, H2, H and 2 H1, H2, H and 3 H1, H2, H and 4 H1, H2, H and 5 H1, H2, H3 Between X0 and 1 Phase X1 or X2 or X3 Wiring Diagram 30D : 480 Delta : 240 Delta/ TAPS: 2, 2.5% ; 4, 2.5% and 2 H1, H2, H and 4 H1, H2, H and 3 H1, H2, H and 4 H1, H2, H and 5 H1, H2, H and 5 H1, H2, H and 6 H1, H2, H3 240 X1, X2, X3 X1 and X4 or X2 and X4

7 THREE-PHASE CABINET STYLE Wiring Diagram 30E : 480 Delta : 208Y/ TAPS: 2, 2.5% ; 4, 2.5% Jumper Taps To H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H3 Figure 7 Figure 8 Between X0 and X1 or X2 or X3 Wiring Diagram 30F : 480 Delta : 240 Delta/ TAPS: 2, 2.5% ; 4, 2.5% Figure 9 Jumper Taps To NEMA 3R ENCLOSURE Weathershields H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H3 240 X1, X2, X3 X1 and X4 or X2 and X4 WIDTH B WEATHERSHIELDS 3R-C

8 THREE-PHASE CABINET STYLE Wiring Diagram 32A : 208 Delta : 480Y/277 TAPS: 2, 2.5% ; 4, 2.5% Wiring Diagram 32C : 240 Delta : 208Y/ TAPS: 2, 2.5% ; 4, 2.5% Jumper Taps To and 2 H1, H2, H and 4 H1, H2, H and 3 H1, H2, H and 4 H1, H2, H and 5 H1, H2, H and 5 H1, H2, H and 6 H1, H2, H3 Jumper Taps To H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H3 480 X1, X2, X3 277 Between X0 and X1 or X2 or X3 Between X0 and X1 or X2 or X3 Wiring Diagram 32B : 208 Delta : 480Y/277 TAPS: 1, 5% ; 2, 5% Wiring Diagram 32D : 240 Delta : 208Y/ TAPS: 1, 5% ; 2, 5% and 2 H1, H2, H and 4 H1, H2, H and 3 H1, H2, H and 4 H1, H2, H and 2 H1, H2, H and 4 H1, H2, H and 3 H1, H2, H and 4 H1, H2, H3 480 X1, X2, X3 277 Between X0 and 1 Phase X1 or X2 or X3 Between X0 and 1 Phase X1 or X2, or X3 36

9 THREE-PHASE CABINET STYLE Wiring Diagram 35A : 480 Delta : 480Y/277 TAPS: 2, 2.5% ; 4, 2.5% Wiring Diagram 35C : 480 Delta : 480Y/277 TAPS: 2, 2.5% ; 4, 2.5% and 2 H1, H2, H and 4 H1, H2, H and 3 H1, H2, H and 4 H1, H2, H and 5 H1, H2, H and 5 H1, H2, H and 6 H1, H2, H3 Jumper Taps To H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H3 480 X1, X2, X3 277 Between X0 and X1 or X2 or X3 480 X1, X2, X3 277 Between X0 and 1 Phase X1 or X2 or X3 Wiring Diagram 35B : 600 : 208Y/ TAPS: 2, 2.5% ; 4, 2.5% Wiring Diagram 35D : 600 : 208Y/ TAPS: 2, 2.5% ; 4, 2.5% and 2 H1, H2, H and 4 H1, H2, H and 3 H1, H2, H and 4 H1, H2, H and 5 H1, H2, H and 5 H1, H2, H and 6 H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H3 Between X0 and X1 or X2 or X3 Between X0 and 1 Phase X1 or X2 or X3 37

10 THREE-PHASE CABINET STYLE 38 Wiring Diagram 35E : 208 Delta : 208Y/ TAPS: 2, 2.5% ; 4, 2.5% Jumper Taps To H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H H1, H2, H3 Between X0 and X1 or X2 or X3 Wiring Diagram 35F : 208 Delta : 208Y/ TAPS: 1, 5% ; 2, 5% and 2 H1, H2, H and 4 H1, H2, H and 3 H1, H2, H and 4 H1, H2, H3 Between X0 and 1 Phase X1 or X2 or X3

11 Low Temperature Rise Transformers Three-Phase 600V Class Standard Application Voltages Cabinet Style Electrostatic Shielded KVA Catalog Number Dimensions (Inches) Temp. Shielded Taps Rise Height Width Depth C Figure A B C Wiring Diagram Y/ 15* * * E % Yes A B ** 15* * * F % Yes D C Y/ 15* * E 45* % Yes A B ** 15* * F 45* % Yes D C 4400 * Wall brackets available for units 15 KVA through 75 KVA Cat. No **Volt Center Tap on center coil, 30 KVA through 500 KVA. Approx. Ship Wt. (lbs) CAUTION: When using the center tap for single-phase applications, the single-phase load should not exceed 5% of the three-phase KVA rating. A separate single-phase transformer should be used if the singlephase load is in excess of 5%. Fuse input side per NEC

12 THREE-PHASE CABINET STYLE 40 Using Two Single-Phase (Stock) Transformers FOR PROPER OVERCURRENT PROTECTION, REFER TO ARTICLE OF N.E.C. THREE-PHASE 480 VOLTS 240 VOLTS (Open Delta) 3Ø, 60Hz KVA* Qty. Catalog N0. Catalog No. Is For 1 Transformer, Full Load Full Load 2 Units Are Required Amps Amps Diagram above is for illustration purposes only. Each transformer is shipped with detailed wiring diagrams. Refer to nameplate for specific voltage tap combinations. 600 VOLTS 480 VOLTS (Open Delta) 3Ø, 60Hz 480 VOLTS 380 VOLTS (Open Delta) 3Ø, 50/60Hz Pri. 600V Pri. 480V Pri. Sec. Catalog Catalog No. Is For 1 Transformer, Sec. 480V Sec. 380V Amps Amps Qty. No. 2 Units Are Required KVA* KVA* Diagram above is for illustration purposes only. Each transformer is shipped with detailed wiring diagrams. Refer to nameplate for specific voltage tap combinations. * KVA capacity of three-phase autotransformer bank, using two single-phase, 60Hz transformers connected open delta. NOTE: Can be reverse connected with no change in KVA. Fuse input side per NEC For dimensions and weights please refer to tables.