Abb Current Transformer Wiring Diagram
Application diagram of a ct.
Abb current transformer wiring diagram. This allows them to be used in combination with measurement equipment. The common laws for transformers are valid. Abb s transformer protection relays are used for protection control measurement and supervision of power transformers unit and step up transformers including power generator transformer blocks in utility and industry power distribution networks. Abb manufactures instrument transformers according to ansi iec gost gb bs and din standards and other standards if required.
It is available in two external designs tapered bottom and wide bottom for adaptability to a variety of mounting arrangements. Current poles with other color handles are available by replacing the c with the appropriate designation per chart on page 6. 1 1 2 2 this equation gives current transformation in proportion to the primary and secondary turns. Instrument transformer connections a.
The cmv transformer is designed for padmounted distribution transformer metering. Each current pole can also be described with 2 characters c1 to c9. Graphical symbols for diagrams created date. The current transformer is designed to connect in series with the line to transform the line current to the standard 5 amperes suitable for the meter or relay.
Current voltage relay volt meter transformer or power sub station watt meter h1 h2 x1 x2 h1 x1 h2 x2 h1 h2 x1 x2 w r r a b v r ammeter a r figure 2. Current transformers for a short circuited transformer the following is valid. Vv the ip 5 a ratio current transformer delivers at the secondary a current is of 0 to 5 a that is proportional to the current measured at the primary ip. Abb library is a web tool for searching for documents related to abb products and services.
Both designs can be mounted directly over the ilv terminals of pad mounted distribution transformers.