Base styles and ratings are shown below.
Potential transformer specification pdf.
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.
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.
Adhere to ufc 1 300 02 unified facilities guide specifications ufgs format standard when editing this guide specification or preparing new project specification sections.
This is a one of the important specifications of voltage transformers.
3156 part i iv.
Sometimes a voltage transformer may have two or more than two secondary cores.
Federal pacific offers a full line of medium voltage transformers.
Many specifications list a number of transformer standards and make a statement in the specifications that the transformers must meet these standards.
Potential or voltage transformer.
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.
This transformer step down the voltage to a safe limit value which can be easily measured by the ordinary low voltage instrument like a voltmeter wattmeter and watt hour meters etc.
These transformers cannot be used for reverse feed.
The purpose of the potential transformer is to provide an isolated secondary voltage that is in phase and exact proportionate representation of primary voltage.
These transformers can be configured to meet most any application requirement.
High voltage general purpose transformers 2 4kv to 15kv 15kva through.
Application guide for voltage transformers.
The following have different explanations in these standards.
Potential transformer pt definition the potential transformer may be defined as an instrument transformer used for the transformation of voltage from a higher value to the lower value.
Continuous rating the constant load which a transformer can carry its rated primary voltage and frequency without exceeding its specified temperature rise.
Specification for voltage transformer.
The emergency rating of potential transformers is defined at one minute of operation thus enough time for protective equipment to operate.
All medium voltage transformers are engineered to order to the requested specifications.
