instrument transformer

These methods apply to both types of instrument transformers.

The instrument transformers with protective relays are used to sense the power system voltage and current.

Both current and voltage instrument transformers are designed to have predictable characteristics on overloads.

Current transformers (CT) are a series connected type of instrument transformer.

Potential transformer, abbreviation for type of electrical instrument transformer.

Accessories such as instrument transformers, surge arresters, and capacitors are also made in compatible housings.

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels.

Instrument Transformers

Instrument transformer

Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used without affecting the primary circuitry.

According to Ontario Hydro, Transduction has pioneered a complex device that eliminates hazards of transmitting data from high-voltage instrument transformers to computers.

Instrument transformer: Potential or current transformer used to accurately and safely represent voltage, current or phase position of high voltage or high power circuits.

High-voltage fuses are used to protect instrument transformers used for electricity metering, or for small power transformers where the expense of a circuit breaker is not warranted.

ANSI/IEEE C57.13, American National Standard Requirements for Instrument Transformers

It will contain circuit breakers for overcurrent protection of the converter transformers, isolating switches, grounding switches, and instrument transformers for control, measurement and protection.

Instrument transformers are typically used to operate instruments from high voltage lines or high current circuits, safely isolating measurement and control circuitry from the high voltages or currents.

Some types of apparatus such as disconnecting switches, circuit breakers, and instrument transformers are made in enclosures that can be welded to become an integral part of the isolated-phase bus system.

Formerly, three light bulbs were connected between the generator terminals and the system terminals (or more generally, to the terminals of instrument transformers connected to generator and system).

The transducers convert the analog output of an instrument transformer from one magnitude to another or from one value type to another, such as from an ac current to dc voltage.

In some power plants, a set of lamps may be connected between the generator and system busses (or between the instrument transformers connected to those busses) as a backup to the synchroscope instrument.

Received Golden Peacock Award 08-09 for NAPOKRETE based Instrument Transformer - Current Transformer & Voltage Transformer.

All phase polarities and ratios must be matched as well as current and potential polarities must be synchronised for instrument devices to measure an accurate representation of the primary circuit values on the secondary sides of the instrument transformers.

The company is adding to its electrical engineering business with the purchase of Haefely Holding, of Switzerland, a maker of components for high-voltage electricity transmission, and MWB Vermoegensverwaltungs, of Germany, the world's leading manufacturer of explosion-proof, gas-insulated instrument transformers.