Potential Transformer Specification Pdf

A potential transformer must be capable of operating at 110 above rating voltage continuously provided the secondary burden in volt amperes at this voltage does not exceed the thermal rating.

Potential transformer specification pdf.

Sometimes a voltage transformer may have two or more than two secondary cores. Application guide for voltage transformers. These transformers can be configured to meet most any application requirement. This guide specification covers the requirements for three phase pad mounted liquid filled transformers of the dead front and live front types for exterior applications.

Continuous rating the constant load which a transformer can carry its rated primary voltage and frequency without exceeding its specified temperature rise. Potential or voltage transformer. Adhere to ufc 1 300 02 unified facilities guide specifications ufgs format standard when editing this guide specification or preparing new project specification sections. The emergency rating of potential transformers is defined at one minute of operation thus enough time for protective equipment to operate.

The following have different explanations in these standards. Many specifications list a number of transformer standards and make a statement in the specifications that the transformers must meet these standards. High voltage general purpose transformers 2 4kv to 15kv 15kva through. Federal pacific offers a full line of medium voltage transformers.

A transformer with a turns ratio which provides a higher than rated voltage at no load and rated voltage at rated load. Then these values are the sum of the output of all the secondary winding of a single voltage transformer. 3156 part i iv. These transformers cannot be used for reverse feed.

This is a one of the important specifications of voltage transformers. The potential transformers and accessories covered by this specification shall comply with the requirement of the latest edition of the following standards unless otherwise stated in this specification. Some definitions and requirements of these standards such as csa c88 m90 ieee c57 12 00 and iec 60076 are different. The purpose of the potential transformer is to provide an isolated secondary voltage that is in phase and exact proportionate representation of primary voltage.

Base styles and ratings are shown below. Potential transformers are used for both protection and metering purposes. All medium voltage transformers are engineered to order to the requested specifications.