Our current limiting reactors reduce short-circuit currents, protecting and increasing the longevity of your equipment.
Contact Us Now!| Standard | ||||
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| Power Ratings | 500 VA up to 250 kVA | |||
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| Primary Voltages | Common | Custom | ||
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Up to 600 Vrms | |||
| Secondary Voltages | Common | Custom | ||
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Up to 600 Vrms | |||
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This 87 kVA high voltage transformer supplies voltage to a linear accelerator. This unit has a 460 volt primary line-to-line (L-L). At no load, the secondary is 261.5 kilo-volts line to line, wye connected. At full load, the secondary is 250 kilo-volts line to line, wye connected. This goes into an oil tank supplied by the customer. It contains flashplates and brass terminal spheres for proper insulation and termination points, respectively.
87 kVA
3
400 Hz
460 Vrms L-L
261.5 kVrms L-L (Wye) @ No-Load
Goes in oil.
"In electrical engineering, current limiting reactors can reduce short-circuit currents, which result from plant expansions and power source additions, to levels that can be adequately handled by existing distribution equipment. They can also be used in high voltage electric power transmission grids for a similar purpose. In the control of electric motors, current limiting reactors can be used to restrict starting current or as part of a speed control system.
"Where the prospective short circuit current in a distribution or transmission system is calculated to exceed the interrupting rating of the associated switchgear, a current limiting reactor may be selected. The inductive reactance is chosen to be low enough for an acceptable voltage drop during normal operation, but high enough to restrict a short circuit to the rating of the switchgear. The amount of protection that a current limiting reactor offers depends upon the percentage increase in impedance that it provides for the system.
"The main motive of using current limiting reactors is to reduce short-circuit currents so that circuit breakers with lower short circuit breaking capacity can be used. They can also be used to protect other system components from high current levels and to limit the inrush current when starting a large motor."
From http://en.wikipedia.org/wiki/Current_limiting_reactor
"A line reactor is an inductor wired between a power source and a load. In addition to the current limiting function, the device serves to filter out spikes of current and may also reduce injection of harmonic currents into the power supply. The most common type is designed for three-phase electric power, in which three isolated inductors are each wired in series with one of the three line phases.[8] Line reactors are generally installed in motor driven equipment to limit starting current, and may be used to protect Variable-frequency drives and motors."
The primary application of air-core reactors is for current-limiting reactors, where the short-circuit current of the system may be many times normal current, values of from ten to twenty times normal current being typical.
"Reactors used to limit the current required for the starting of motors may be of either type, depending on the time required by the motor to come up to speed."
From http://en.wikipedia.org/wiki/Current_limiting_reactor#Line_reactor