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Electric Transformer Terms
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A transformer which uses air to cool by use of fans or normal ventilation.
- A transformer with one winding per phase.
- Describes
multiple single phase transformers connected together to provide power
to a three phase load.
- The
transformer's
central part or inductor that enhances the power of the magnetic field.
- A condition that results from a transformer or
inductor reaching highest magnetic strength.
- In
a three phase connection the windings all connect to form a loop.
- proportion
of time for a transformer to provide full rated power to the load. This
measurement greatly affects the actual size of the transformer.
- A component that sits between windings -typically
the primary and secondary - to supply the most isolation; more
of these can be placed between secondary windings as needed; it is normal
to connect the shielding to the core. Encapsulated - a dry transformer
with an enclosed core and coil assemble.
- The
amount of current a transformer draws at nominal voltage input in an
unloaded state.
- Resonance results from the saturation of a ferrous
core of an inductive component, which increases the inductive reactance
relative to the capacitance reactance.
- A complex system within the transformer that consists
of capacitors, inductors, and a resistor; it provides a relative small
opposition to specific frequencies or direct current, as it blocks or
attenuates other frequencies.
- A conductor that can handle thermal expansion and contraction
as well as reduce noise.
- That
the forces that resist the flow of current in AC circuits like resistance
or inductive or capacitive reactance.
- The capability of a coil for storing energy and resisting
changes in the flow of current; it is a function of the core material,
amount of turns of the coil and the cross section.
- This is when the transformer has a short
current surge through it, from residual flux, occurring at the moment
energy is applied to the transformer.
- This transformer has physical separation
from the primary and secondary windings in order to allow magnetic coupling
between isolated circuits and minimize electrostatic coupling.
- Kilovolt
Ampere rating that is a measurement of the output of a transformer without
exceeding a certain temperature.
- The quantity of
electric power supplied or necessitated at any particular spot in the
system. Also a requirement of the KVA or
VA from the transformer; light bulbs are loads.
- This conductive material attenuates stray
magnetic fields by its positioning around a transformer's coils.
-
The direction of the current between two leads. If the directions are
the same then the leads have the same polarity. In electric transformers
the polarity is classes as either additive or subtractive.
- Watts
divided by volt amps, KW divided by KVA. Power factor: leading and lagging
of voltage versus current caused by inductive or capacitive
loads, and harmonic power factor: from nonlinear current.
- The total of the Volts and Amps derived from all
the secondary windings.
- This is the opposition to variations of alternating
current, capacitive reactance is in terms of capacitors, and inductive
reactance is the opposition to change from an inductor or coils.
- A condition of an AC circuit in which capacitive and
inductive reactances interact, resulting in a maximum or minimum circuit
impedance.
- On the load or output side, the connected transformer winding.
- Pressure switch device which detaches the transformer from the
line.
-
The measurement of the amount of force on a unit charge because of the
surrounding charges.
- The change, in percentages, of the output voltage from no load
to full load.
- Supplemental
connections to a winding which permit varying voltages from the same winding;
typically utilized on the primary winding to permit the transformer to
be used in different countries with varying line voltages
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