Energy conservation by BEE standards


Energy conservation by BEE standards



Technical Specifications - Distribution Transformer

1. Scope

1.1 This standard specifies the requirements for participating in the pilot energy labelling scheme for oil immersed, naturally air cooled, three phase, and double wound non sealed type out door distribution transformer.

1.2 The referred Indian Standard are IS 1180 (part I) Out door type three- phase distribution transformers upto and including 200 kVA, 11 kV – specification, IS 2026 (part 2) Specifications of power transformers – for Temperature-rise and IS 2500 (part-I) -2000: Sampling Schemes indexed by Acceptance Quality Limit (AQL) for lot-by-lot inspection.

1.3 The standard ratings covered under the pilot energy labelling scheme is 16, 25, 63, 100, 160 and 200 kVA and non standard ratings from 16 kVA to 200 kVA.  



2. Schedule of Tests:

2.1 Method of Tests:  The testing code and procedure for distribution transformer would be as per IS 1180 (part 1): 1989 with all amendments as of date. The exception is conditions on limits of temperature rise. For the scheme the following would be used. Reduce the temperature rise limits of top oil and transformer winding from the existing IS 1180 (part 1): 1989 level of 450 C & 550 C to 350 C & 400 C.

2.2 Parameters to be tested: Parameters for initial testing the type test parameters set out in IS 1180 (part 1) and the same is reproduced below: a. Measurement of winding resistance [IS 2026 (part I):1977] b. Measurement of voltage ratio and check of voltage vector relationship [IS 2026 (part I):1977] c. Measurement of impedance voltage/short circuit impedance and load loss [IS 2026 (part I):1977] d. Measurement of no-load loss and current [IS 2026 (part I):1977] e. Measurement of insulation resistance [IS 2026 (part I):1977] f. Induced over-voltage withstand test [IS 2026 (part 3):1981] g. Separate-source voltage withstand test [IS 2026 (part 3):1981] h. Lightning impulse test [IS 2026 (part 3):1981] i. Temperature-rise test [IS 2026 (part 2):1977] j. Short-circuit test [IS 2026 (part I):1977] k. Air pressure test [IS 1180 (part 1): 1989] l. Permissible flux density and over fluxing [IS 1180 (part 1): 1989]





Revised Schedule dated 14th Aug 2007 2

Parameters for verification & challenge testing are as follows: a. Measurement of winding resistance [IS 2026 (part I):1977] b. Measurement of impedance voltage/short circuit impedance and load loss [IS 2026 (part I):1977] c. Measurement of no-load loss and current [IS 2026 (part I):1977] d. Temperature-rise test [IS 2026 (part 2):1977]



3. Tolerances:  No positive tolerance shall be allowed on the maximum losses displayed on the label for both 50% & 100% loading values.



4. Star rating plan: 

4.1 Basis: The existing efficiency or the loss standards are specified in IS 1180 (part 1). This standard defines load losses and no load losses separately. For the BEE labelling programme total losses at 50% and 100% load have been defined. The highest loss segment is defined as star 1 and lowest loss segment is defined as star 5. The existing IS 1180 (part 1) specification losses are the base case with star 1.The basis for star rating plan is as follows:



Case Basis of losses (Total at 50% Load Condition)

Base case Star 1 Current purchasing practice (IS 1180 (part 1)Max Losses)

Star 2 Some utility purchase specs like AP, NDPL

Star 3 Losses from TOC design (Moderate)

Star 4 Losses from lowest TOC design

Star 5 High efficiency design










Comments

Post a Comment

Mock drill

My Energy Sector

The organization of the electrical sector of a country or region varies depending on the economic system of the country. In some places, all electric power generation, transmission and distribution is provided by a government controlled organization. Other regions have private or investor-owned utility companies, city or municipally owned companies, cooperative companies owned by their own customers, or combinations. Generation, transmission and distribution may be offered by a single company, or different organizations may provide each of these portions of the system India's power sector is one of the most diversified in the world. Sources of power generation range from conventional sources such as coal, lignite, natural gas, oil, hydro and nuclear power to viable non-conventional sources such as wind, solar, and agricultural and domestic waste The electric power industry is commonly split up into four processes. These are electricity generation such as a power stati
Read more

My Emergency Evacuation plan

Emergency evacuation is the urgent immediate egress or escape of people away from an area that contains an imminent threat, an on-going threat or a hazard to lives or property. Examples range from the small scale evacuation of a building due to a storm or fire to the large scale evacuation of a city because of a flood, bombardment or approaching weather system . In situations involving hazardous materials or possible contamination , evacuees may be decontaminated prior to being transported out of the contaminated area Emergency evacuation plans are developed to ensure the safest and most efficient evacuation time of all expected residents of a structure, city, or region. A benchmark "evacuation time" for different hazards and conditions is established. These benchmarks can be established through using best practices, regulations, or using simulations , such as modeling the flow of people in a building, to determine the benchmark. Proper planning will use multip
Read more

My Travel and Early time

Travel is the movement of people between relatively distant geographical locations , and can involve travel by foot , bicycle , automobile , train , boat , bus , airplane , or other means, with or without luggage, and can be one way or round trip. Travel can also include relatively short stays between successive movements A travel documentary is a documentary film , television program , or online series that describes travel in general or tourist attractions without recommending particular package deals or tour operators. A travelogue film is an early type of travel documentary, serving as an exploratory ethnographic film . The genre has been represented by television shows such as Across the Seven Seas , which showcased travelogues produced by third parties, and by occasional itinerant presentations of travelogues in theaters and other venues A horse and buggy (in American English ) or horse and carriage (in British English and American English ) refers to a
Read more