Distribution transformers analysis and maintenance practices eep. Consult transformer manufacturers or test equipment manufacturers data for additional information. We perform one group on a routine basis known as preventative maintenance, and the second group on an adhoc basis i. Distribution transformers are normally considered to be those transformers which provide the transformation from 11 kv and lower. No transformer should have rated service voltage applied to it until all preliminary work and pre. Distribution transformers are shipped completely sealed. Distribution transformers are installed overhead on poles, at grade level on pads, and totally underground in vaults. There are two main types of maintenance of transformer. Distribution transformer handbook t h i r d e d i t i o n distribution transformer handbook. Transformer installation, operation, and maintenance manual. Turn off the power supplying this equipment before servicing. Transformers are designed to have an average sound level below industry sound level limits when tested in.
Distribution transformers analysis and maintenance practices photo credit. Basics, maintenance, and diagnostics vii contents continued page 4. Introduction transformers should be installed and serviced only by competent. Operation, and maintenance of drytype distribution transformers. Although many industry standards tend to limit this definition by kva rating e. A power transformer requires various routine maintenance tasks including measurement and testing of different parameters of the transformer. Pdf power system consists of a number of transformers at substations including poll mounted distribution transformers whose numbers are in. Pdf distribution transformer handbook oscar mayorquin.
Distribution transformers maintenance guide for liquid. Maintenance guide for liquid filled distribution transformers. Also information about some types of transformers are gathered as well as distribution transformer connections installations. Distribution transformer instruction manual energy power systems. Tamil nadu electricity board tneb, tamil nadu generation and distribution corporation limited tangedco, tamil nadu. Allow for a cooldown period before servicing equipment. To assess the overall condition of transformers, the. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.
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