Keep your variable frequency drives running longer!
Harmonic compensated and IGBT compatible!
MTE line & load reactors help keep your equipment running longer by absorbing many of the power line disturbances which otherwise damage or shut down your inverters, variable frequency drives (VFDs), variable speed controllers, or other sensitive equipment.
HARMONIC COMPENSATION makes MTE reactors suitable for use on either the drive input or drive output. They are designed to carry full rated fundamental current and will also handle current and frequencies associated with harmonics up to 50% over the fundamental. This robust design allows all MTE reactors to be used on the output of variable frequency drives including IGBT types with switching frequencies up to 20kHz. A premium dielectric system is designed to protect the reactor’s coils from the potentially high peak voltages and fast dV/dT which may be experienced when used for motor protection with long leads between inverter and motor.
They are a robust filtering solution for virtually any 6 pulse rectifier or power conversion unit. There is no need to de-rate MTE RL reactors as they are harmonic compensated and IGBT protected to assure optimum performance in the presence of harmonics, and are very effective at reducing harmonics produced by inverters and drives. Standard MTE RL reactors may be applied up to 690 VAC with compatible impedance ratings.
SINGLE PHASE - MTE three-phase reactors may be applied to single phase drives to provide transient protection as well. See application details for correct single phase drive sizing. EPOXY IMPREGNATION minimizes audible noise in the reactor and enhances structural and moisture integrity.
HIGH SATURATION CURRENT RATING of MTE reactors maximizes their surge current protection capability. MTE reactors absorb many of the power line disturbances which cause nuisance trips on voltage source units.
3% impedance reactors are typically sufficient to absorb power line spikes and motor current surges. They will prevent nuisance tripping of drives or circuit breakers in most applications.
5% impedance reactors are best for reducing harmonic currents and frequencies. Use them when you must comply with IEEE 519 to reduce motor operating temperature, or to reduce motor noise.
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.
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 MTE reactors allows standard units to be used here with confidence. They improve the waveform integrity, thus enhancing motor performance and system efficiency.
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.
Files and Links