Low Voltage Current Transformer Specifications

Current current relay current transformer voltage transformer lines in which either current or voltage is too high to permit running the lines directly to 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.

Low voltage current transformer specifications.

Low voltage transformers eaton s mission is to improve the quality of life and the environment through the use of power management technologies and services. Although we specify this voltage as line voltage but in actual case the secondary voltage is 110 3 volts. The transformer is used in three phase systems to measure current or voltage. Oil directed cooling designs for high power densities in small.

Current transformer shapes and sizes vary depending on the end user or switch gear manufacturer. Morlan associates inc. Low voltage single ratio metering current transformers are either a ring type or plastic molded case. As per standards the rated voltage of a potential transformer is 110v.

Low voltage cts installed at the secondary of the main cts for correcting a ratio and or the current phase shift. Overrating of a ct. Specifications for voltage power rating ambient climate network topography and noise level are typical transformer criteria. Model 781mr multi ratio current transformer was designed to work with relaying applications and fits many switchgear applications.

Split core current transformers either have a two part core or a core with a removable section. Further design options include. Morlan associates inc. Model 191 metering class current transformer designed for use with watt var watt var watt watthour transducers meters and relays.

Cooling and extreme heat protection. Design options for high current transformers for industrial applications. This is because it is normal practice to earth one terminal of primary of the transformer. Split core split core current transformers are designed to provide a low cost method to monitoring electrical current.

Matching auxiliary or interposing ct. Selection of a ct whose primary in is greater than the n immediately greater than the load in. It is regarded as a rating associated with an output that can be taken from the transformer conditions and limitations of established standards.