Line/Load Reactors
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Applying Line/Load Reactors
Input to Inverter/Drive:
On the input of an electronic motor speed controller, line reactors
protect sensitive electronic equipment from electrical noise created
by the drive or inverter (notching, pulsed distortion, harmonics).
They also protect the controller from surges or spikes on the
incoming power lines, as well as reduce harmonic distortion. They
help to meet the requirements of IEEE 519.
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Output of Inverter/Drive:
In long motor lead applications use reactors (IGBT protected)
between the inverter and motor to reduce dv/dt and motor terminal
peak voltage. The use of a load (output) reactor also protects the controller
from a surge current caused by a rapid change in the load, and
even from a short circuit at the load.
Our reactors also reduce operating temperature and audible noise in
motor loads. Harmonic compensation and IGBT protection of all
Guard-AC reactors allows standard units to be used here with confidence.
They improve the waveform integrity, thus enhancing motor performance
and system efficiency.
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Multiple Controllers:
Multiple drives or inverters on a common power line require one
reactor per controller. Individual reactors provide filtering between
each controller (reduce crosstalk) and also provide optimum surge
protection for each unit. A single reactor serving several controllers
does not provide adequate protection, filtering or harmonic reduction
when the system is partially loaded.
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