Download Electric Power Transformer Engineering (The Electric Power by James H. Harlow PDF
By James H. Harlow
This e-book is geared up as a sequence of separate articles. all of the articles is written by way of a separate writer and is particularly precise a couple of specific subject. even though, there isn't any coordination among the authors and articles. details is scattered round during the book.
For instance, i used to be drawn to studying extra approximately how transformers are used to cancel out harmonics. I consulted the desk of contents with out success. I consulted the index. i discovered info in three diversified chapters sooner than i discovered what I needed.
Another instance. i used to be attracted to studying concerning the required upkeep practices for transformers. make sure to learn bankruptcy 3.11, Transformer set up and upkeep. yet you should definitely learn bankruptcy 3.2 to determine approximately upkeep of bushings. there's additionally bankruptcy 3.13 that covers online tracking platforms. and skim bankruptcy 3.3 to determine approximately upkeep of load faucet changers.
The index isn't important. There are forty sections indexed touching on checking out. you must lookup every one of them to determine in the event that they are assessments played via designers and brands or in the event that they are to be played through owners.
With all that acknowledged, the booklet does have very specific info on those themes. it really is simply very tough and time eating to discover what you wish.
Read Online or Download Electric Power Transformer Engineering (The Electric Power Engineering Hbk, Second Edition) PDF
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Additional info for Electric Power Transformer Engineering (The Electric Power Engineering Hbk, Second Edition)
16 Two-bushing subway. 18 Single-phase round. 19 Two-primary bushing. 17 Three-phase vault. 2 Surface-Operable Installations The subsurface enclosure provides the required ventilation as well as access for operation, maintenance, and replacement, while at the same time providing protection against unauthorized entry. Surfaceoperable enclosures have grade-level covers that can be removed to gain access to the equipment. The enclosures typically are just large enough to accommodate the largest size of transformer and allow for proper cable bending.
Bushing wells with inserts are preferred, as they allow both the insert and elbow to be easily replaced. Units with a secondary of 208Y/ 120 V are available up to 1000 kVA. Units with a secondary of 480Y/277 V are available up to 2500 kVA. 29 (ANSI, 1991) for coastal environments. The tank and cabinet of pad-mounted transformers are commonly manufactured out of mild carbon steel. When applied in corrosive areas, such as near the ocean, they are commonly made out of 300- or 400-series stainless steel.
Circuit breakers at the substation or fusing at feeder taps or riser poles may afford some protection for individual transformers, but the most effective protection will be at, near, or within each transformer. 1 Goals of Protection Transformer-protection devices that limit excessive currents or prevent excessive voltages are intended to achieve the following: • • • • • Minimize damage to the transformer due to overloads Prevent transformer damage caused by secondary short circuits Prevent damage caused by faults within the transformer Minimize the possibility of damage to other property or injury to personnel Limit the extent or duration of service interruptions or disturbances on the remainder of the system The selection of protection methods and equipment is an economic decision and may not always succeed in complete achievement of all of the goals listed above.