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[DOC File]THE INDIAN ELECTRICITY RULES, 1956
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installed transformer/apparatus capacity up to 1000 KVA to be supplied at voltage upto 11KV and 2500 KVA at higher voltages (above 11 KV and not exceeding 33KV). (iii) a circuit breaker by HV consumers having an aggregate installed transformer/apparatus capacity above 1000 KVA and supplied at 11 KV and above 2500 KVA supplied at higher voltages ...
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[DOC File]S
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The transformer shall be designed in accordance with this specification and shall have one of the following kVA ratings: 10, 15 , 25, 37.5, 50, 75, 100, 167 2.2. The primary voltage and the basic …
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[DOC File]IEEE Standards - draft standard template
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Transformer rating is given in kilovolt-amperes (kVA) since the capacity is limited by the load current which is proportional to the kVA regardless of the power factor. As a first step to determine the kVA rating of the transformer, the engineer must consider all possible loads that will be serviced by the transformer.
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[DOC File]Design of a Power Distribution System
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For example, a 25 KVA transformer can handle 25 x 1.1 = 27.5 KVA. The engineer's approximations concerning load sizing are extremely important and can make or break the design. Transformer Loading: As mentioned previously, transformers are utilized to reduce the 7.2 kV primary voltage to 120/240 volt service for customer utilization.
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[DOC File]SECTION 261200 - MEDIUM-VOLTAGE TRANSFORMERS
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In first paragraph below, retain ANSI C57.12.50 for dry-type transformers rated up to 500 kVA, ANSI C57.12.51 for dry-type transformers rated 501 kVA and larger, or ANSI C57.12.52 for sealed dry-type transformers rated 501 kVA and larger. UL 1562 listing covers the range of 1 to 5000 kVA.
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[DOC File]IEEE Standards - draft standard template
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These are two classifications based on the rating of transformers measured in kilovolt- amperes. The distribution type covers the range of 3 to 500 kVA; the power type covers all ratings above 500 kVA. Transformer Types (Grey 5.2) The following types of transformers are normally used in commercial buildings: Substation. Primary-unit substation
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[DOC File]SECTION 16275 - Government of New York
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Jul 08, 2009 · Indicate on drawings the transformer KVA, primary and secondary voltage. 4. Indicate type of coil connections required for 3 phase transformers (for specific applications of various type connections refer to ANSI/IEEE C57.105 “Guide for Application of Transformer Connections in Three-Phase Distribution Systems”).
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[DOC File]Notes 10: Conductor sizing & an example
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The transformer bank is connected delta-grounded Y and consists of three single-phase transformers each rated 2000 kVA, 12.47kV : 2.4kV, with Z=1.0+j6.0%. The feeder serves an unbalanced three-phase Y-connected load of . Sa=750 kVA at 0.85 pf lagging. Sb=1000 kVA at 0.90 pf lagging. SC=1250 kVA at 0.95 pf lagging. Our goals are to:
112.5 kva transformer amperage chart

[DOC File]IEEE Standards - draft standard template
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The transformer kVA rating is then calculated by the following: Once the recommended transformer kVA rating is calculated, Table 1 can be used to select the appropriate transformer size for the application. Normally a transformer rating greater than the calculated value is selected. —Standard kVA ratings for distribution transformers
transformer ratings kva chart

[DOC File]Crucial Power Products
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POWER RATING (KVA/KW) 3 / 2.1 5 / 3.5 7.5 / 5.25 10 / 7 12.5 / 8.75 15 / 10.5 20 / 14 INPUT VOLTAGE (VAC) Single Phase, 120/208/240/277 VAC Single Phase, 208/240/277 VAC MAXIMUM CURRENT 29/17/15/13 44/25/22/19 36/30/26 74/40/35 57/49/43 68/59/51 89/77/66 TOLERANCE +15% to -15% FREQUENCY (Hz) 60 +/- 3% POWER FACTOR 0.98 to 1.0 (Typical ...
how to calculate transformer kva

Transformer kva chart