JEFFERSON Medium Voltage Transformers Single-Phase 3 to 167 KVA Three-Phase 15 to 300 KVA

Transcription

1 JEFFERSON Medium Voltage Transformers Single-Phase 3 to 167 KVA Three-Phase 15 to 300 KVA TYPICAL APPLICATIONS Indoors or outdoors for: Industrial and commercial High rise apartments Factories Offices and schools Hospitals Mass transit facilities For the name of your local representative, or for technical assistance, call

2 Medium Voltage Transformers features & benefits Designed for lower weight and smaller size for easier handling and installation. Quiet operation for more flexibility in choice of mounting locations. Heavy-duty sheet metal enclosures for maximum durability in severe industrial applications. NEMA Type 3R enclosures for indoor or outdoor applications. Heat applied ASA-61 Gray Powder Coat Finish to resist corrosion in severe environments. Large connection compartment for ease of wiring and installation. Standard stub down terminations. Taps provided on primary to compensate for voltage variations. Cores made from high quality electrical steel for increased efficiency and lower operating costs. Built in accordance with ANSI C 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 and OSHA requirements. Made in U.S.A. 80

3 MEDIUM VOLTAGE Medium voltage dry type transformers offer an economical alternative to liquid filled designs for institutional, industrial and commercial applications. Designs are available for both indoor or outdoor applications. If necessary, will customize any of the standard models shown to meet your precise requirements. Enclosures Encapsulated All 3-25 KVA Ventilated Indoor/Outdoor NEMA 3R All 15 KVA KVA Bolted (knockdown) construction for easy field installation. Typical KVA/Voltage Ratios Single-Phase: 60 Hz C Rise KVA Any HV from 1.2 KV to 5 KV Any LV from 120 V to 480 V Three-Phase: 60 Hz C Rise KVA Any HV from 1.2 KV to 5 KV Any LV from 208 V to 480 V Terminations Standard stub down terminations through 300 KVA; front wiring to common terminal insulating bar. Wiring Compartment Spacious area for large conductor, ease of bending and termination. Adequate room provided for specified fan cooling or future fan cooling provision with or without controls upon request. Expanded metal bottom assures air cooling for accommodation of UL required conductor sizes. Large permanent nameplate provided for ratings identification. Standard Basic Impulse Levels (BIL) Voltage Full & Chopped Waves Class - KV Crest - KV or 60 Sound Reduction Designed for low flux density using grain-oriented silicon steel. Core clamps properly torqued to assure quiet operation. Designed to meet ANSI requirements for testing. 81

4 SINGLE-PHASE MEDIUM VOLTAGE Wall Mounting Encapsulated 2 5% (FCBN) 115 C Catalog No. for Catalog No. for Catalog No. for Catalog No. for KVA Case 2400V Primary 2400V Primary 4160V Primary 4160V Primary Wiring Size 120/240V Secondary 240/480 Secondary 120/240V Secondary 240/480VSecondary Fig. Diagram Approx. Ship Wt. (lbs) A PA A A A PB A A 345 Cabinet Style 60 Hz 5 KV Class /2% (FCABN) 150 C Catalog No. for Catalog No. for Catalog No. for Catalog No. for KVA Case 2400V Primary 2400V Primary 4160V Primary 4160V Primary Wiring Size 120/240V Secondary 240/480V Secondary 120/240V Secondary 240/480V Secondary Fig. Diagram Approx. Ship Wt. (lbs) A SA A A SB A A 1220 All terminals are located on the bottom. Case Dimensions in Inches Size A B C PA PB SA SB NOTE: Housing dimensions subject to change without notice. Contact factory where dimensions are critical. Figure 11 Figure 12 Wiring Diagram 81A Wiring Diagram 78A 82

5 THREE-PHASE MEDIUM VOLTAGE Cabinet Style 60 Hz 5 KV Class /2% (FCABN) 150 C Wir. Dia. KVA Case Delta Wye Size 208Y/ Y/ Y/ Y/ Fig. Sec. Sec. Approx. Ship Wt. (lbs) 15 TA B 82A B 82A B 82A TB B 82A B 82A B 82A 1525 TC B 82A TD B 82A 2250 All terminals are located on the bottom. Contact factory for additional sizes. Case Dimensions in Inches Size A B C TA TB TC TD Figure 15 NOTE: Housing dimensions subject to change without notice. Contact factory where dimensions are critical. 83

6 THREE-PHASE MEDIUM VOLTAGE Wiring Diagram 82A PRIMARY: 2400 or 4160 Volt Delta SECONDARY: 480Y/277 or 208Y/120 TAPS: 2, 2.5% FCAN; 2, 2.5% FCBN PRIMARY Wiring Diagram 82B PRIMARY: 2400 or 4160 Volt Delta SECONDARY: 480 or 240 Volt Delta TAPS: 2, 2.5% FCAN; 2, 2.5% FCBN PRIMARY Primary % Taps On Each Coil Jumper Between Taps Connect Primary and 2 H1, H2, H and 3 H1, H2, H3 Nom. 3 and 4 H1, H2, H and 5 H1, H2, H and 6 H1, H2, H3 Secondary Volts SECONDARY Connect Secondary 480 or 208 X1, X2, X3 277 or 120 Between X0 and 1 Phase X1 or X2 or X3 SECONDARY Primary % Taps On Each Coil Jumper Between Taps Connect Primary and 2 H1, H2, H and 3 H1, H2, H3 Nom. 3 and 4 H1, H2, H and 5 H1, H2, H and 6 H1, H2, H3 Secondary Volts Connect Secondary 480 or 240 X1, X2, X3 84