Single phase 480 transformer
Causes and Effects of Single-Phase Induction Motors
Assume that the substation transformer voltage rating is 69,000 Delta – 12,470 Wye and the distribution transformer bank voltage rating is 12,470 Wye – 480 Delta. The resulting voltages under ...
[DOC File]Introduction to Distribution Systems
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120/240 single phase. 120/208 3 phase. 277/480 3 phase. The 120/240 configuration is obtained from the low-side of a HV/240 volt transformer, where HV is the rated voltage on the high voltage side, and the 240 is the rated voltage on the low voltage side. Then a center tap is connected to the low voltage winding and grounded along with the low ...
[DOC File]Functional Specification for Single-Phase Overhead Type ...
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Ratings for Single-Phase Transformers (Single Ratio) Transformer High-voltage Minimum kVA Rating For. Low-voltage Rating of: Rating (V) BIL (kV) 120/240 1 (V) 277. or. 240/480 1 (V) 2400/4160Y. 4800/8320Y. 7200/12470Y. 12470GrdY/7200. 7620/13200Y. 13200GrdY/7620. 12000 13200/22860Y 2 13200 13800GrdY/7970
[DOC File]library.e.abb.com
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LV: 240/120, 480/240, 277 V. The specific requirements are stated in detail on the Transformer Data Sheet. 2.0 CODES AND STANDARDS. All codes and standards referenced in this specification shall be those in effect at the time of Purchase Order award.
[DOC File]SIMPLEX, INC
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9. Control Power: Internal, from generator. 480V AC, single-phase. Fused circuits. Controls operate at 120V via control power transformer circuit. Principle systems and components as follows: 1. Load Elements: Tubular type, weatherproof, totally enclosed, UL listed. 2. Load Control: Branch circuit magnetic contactors. 3. Element Short
[DOC File]Chapter 1: DESIGN PROCESS
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(a) 120-V, single-phase, 2-wire (b) 120/240-V, single-phase, 3-wire (c) 120/208-V, single-phase, 3-wire (d) 120/208-V, 3-phase, 4-wire (e) 277/480-V, 3-phase, 4-wire (f) 2400/4160-V, 3-phase, 4-wire. 28.4 Grounding and Ground-Fault Protection. 28.5 Energy Conservation Considerations. 28.6 Design Procedure 28.7 Electrical Equipment Spaces (a ...
[DOC File]Home | US Forest Service
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Jun 17, 2002 · Fluorescent and other discharge lighting can be used at 277 volts. 480 volt single phase, 480V three phase, and 277 volt single phase loads can be used on this system. Also good for minimizing voltage drops on long runs. Disadvantages are that a step down transformer is required to get 120/208 or 120/240 volt power for lights and outlets.
[DOC File]PART 1 – GENERAL
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All single phase and three phase transformers shall be encapsulated type. The primary side of each transformer shall, if applicable, be provided with taps that meet or exceed NEMA standards. Transformers shall be designed, constructed and rated in accordance with …
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