0
'Instrument transformer' is the collective name for current transformers (CTs) and voltage (or 'potential') transformers (VTs/PTs). These Transformers have two functions:
- to reduce the current or voltage in a high-voltage primary circuit to values that may be measured using regular ammeters or voltmeters ('burdens'), or to provide the current or voltage inputs to protection relays.
- to electrically-isolate their secondary burdens from the high-voltage primary circuit for the purpose of safety.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoInstrument transformers proportionally step down or reduce large voltage and current values so that they may be safely used on sensitive instruments and components. These instruments and components include ammeters, voltmeters, and overcurrent protection relays. Instrument transformers fall into two distinct categories: potential and current transformers. A potential transformer (PT) is used to supply a low voltage to voltmeters, and a current transformer (CT) supplies manageable current vales for ammeters and overcurrent relays.
Wiki User
∙ 9y agoThe term, 'instrument transformer', is applied to current transformers and voltage transformers (known, in North America, as 'potential transformers'). The primary windings of instrument transformers are connected to high-voltage systems, and their secondary windings provide outputs to measuring instruments or protective relays. They also provide isolation from the high-voltage system for the purpose of safety.
Wiki User
∙ 10y agowhat are the advantages of using instrument tranformers
Add your answer:
Earn +20 pts
What or Which type of transformer can serve as both a ratio device and an isolating device?
Instrument Transformer
What device can be used to increase current in a DC circuit?
Transformer or instrument transformer. It can increase and decrease current output.
What is VA burden in electrical engineering?
The term 'burden' is used to describe the secondary load applied to an instrument transformer; the reason for this is so that it is not confused with the 'load' supplied by the high-voltage circuit to which the transformer's primary is connected. A burden is either a measuring instruments (ammeter,voltmeter, wattmeter, etc.) or protective relay, depending on the function of the instrument transformer. 'V.A' is the symbol for 'volt ampere', which defines the 'power' rating of the instrument transformer.
What is the difference between VT and PT transformer?
Both are same.AnswerA 'PT' is a 'potential transformer', the preferred term in North America, for what is termed a 'VT', or 'voltage transformer', in Britain. Two names for exactly the same instrument transformer.
What are the advantages of automatic load sharing of transformers?
advantages for automatic load sharing of transformer with protective analysis
What is the difference between power transformer and instrument transformer?
A power transformer is used to provide power (to your home, for example), an instrument transformer is used to measure voltage or current (for metering, for example).
What difference's between potential transformer and voltage transformer?
Both are same. This is an instrument transformer used for metering & protections.
What or Which type of transformer can serve as both a ratio device and an isolating device?
Instrument Transformer
What device can be used to increase current in a DC circuit?
Transformer or instrument transformer. It can increase and decrease current output.
What are the advantages of transform?
what are the advantages of using instrument tranformers
What are the advantages of ferrous metals?
list down the advantages of ferrous-magnetic material in transformer application
What is VA burden in electrical engineering?
The term 'burden' is used to describe the secondary load applied to an instrument transformer; the reason for this is so that it is not confused with the 'load' supplied by the high-voltage circuit to which the transformer's primary is connected. A burden is either a measuring instruments (ammeter,voltmeter, wattmeter, etc.) or protective relay, depending on the function of the instrument transformer. 'V.A' is the symbol for 'volt ampere', which defines the 'power' rating of the instrument transformer.
What are the advantages of automatic load sharing of transformers?
advantages for automatic load sharing of transformer with protective analysis
What is the difference between VT and PT transformer?
Both are same.AnswerA 'PT' is a 'potential transformer', the preferred term in North America, for what is termed a 'VT', or 'voltage transformer', in Britain. Two names for exactly the same instrument transformer.
What is the differences between current and potential transformer?
Current Transformer- Instrument transformer used for measure high current. it hasless and thin turns in primary and more and thick turns in secondary.Potential transformer- Instrument transformer used for measure high voltage. it has more and thin turns in primary and less and thick turns in secondary.CommentUnfortunately, the original answer has got things the wrong way around for the CT! A current transformer's primary has a thicker conductor than its secondary.
What are the advantages and disadvantages of electrostatic instruments?
What are the advantages and disadvantages manx iron instrument
What is the instrument called that can change electrical voltage?
Electrical voltage can be changed by a transformer.
