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Instrument Transformer Basic Technical Information and ...
GITID igital EnergyInstrument Transformer Basic Technical Information and AND FUNCTIONSCONSTRUCTION FEATURESRATING AND RATIOMAGNETIC CIRCUITSCURRENT Transformer THERMAL RATING FACTORPOTENTIAL Transformer THERMAL RATINGPOLARITYPT OVERVOLTAGE REQUIREMENTSACCURACY CLASSIFICATION AND BURDENCONNECTIONS POTENTIAL TRANSFORMERSINSULATION/VOLTAGE CLASSMETERING ACCURACYCONNECTIONS CURRENT TRANSFORMERSRELAY ACCURACY OF A CURRENT TRANSFORMERCONNECTIONS STANDARD METERING367569103681057911 Table of ContentsBasic Technical Information and name Instrument Transformer is a general classification applied to current and voltage devices used to change currents and voltages from one magnitude to another or to perform an isolating function, that is, to isolate the utilization current or voltage from the supply voltage for safety to both the operator and the end device in use. Instrument transformers are designed specifically for use with electrical equipment falling into the broad category of devices commonly called instruments such as voltmeters, ammeters, wattmeters, watt-hour meters, protection relays, 1 shows some of the most Basic uses for Instrument transformers.
Basic Technical Information and Application www.GEDigitalEnergy.com 3 The name instrument transformer is a general classification applied to current and voltage devices used to change currents and voltages from one magnitude to another or to perform an isolating function, that is, to isolate the utilization current or voltage from the
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