DC Link Chokes
2Pages

Add MTE DC Link Chokes to drives internal DC bus to: ҕ Reduce AC input line harmonics Help meet IEEE-519 limits Օ Absorb voltage/current spikes Reduce AC ripple on DC bus Օ Reduce dv/dt and di/dt rates Solve nuisance over-voltage tripping Օ Reduce DC Bus transient over-voltage When added between the input rectifier and bus capacitor the link choke will improve the DC bus waveform and the AC input wave- form. In this location the DC reactor will re-duce the amount of AC ripple on the DC bus, reduce the AC input line harmonics and offer protection against nuisance tripping due to voltage spikes such as those caused by ca-pacitor switching. However, a DC link choke will not protect the input rectifiers. DC Link Chokes offer the advantage of maxi-mizing the circuit inductance for power quality reasons, but without causing an AC input line voltage drop. DC link chokes can be used individually, typically on the positive DC bus, or in pairs with one each on both the positive and negative bus. When two DC reac- tors are used on the bus, the inductance is additive. You will need twice as much inductance on the DC bus as used on the AC input (per phase) to accomplish the same performance experienced with AC input reactors. For best performance combine the use of both an AC input reactor and a DC link choke. MTE Corporation DC Link Chokes are an economical means of filtering and controlling the DC bus voltage and current in a variable speed drive/inverter. They help reduce AC input line current harmonic distortion while absorbing DC bus voltage spikes. Link Chokes add protection and filtering but should not be consid- ered a direct alternative to AC input or output reactors. While DC Link Chokes increase the internal filtering and have the ability to absorb spikes, because of their circuit location they do not protect the input bridge recti-fier. They do not offer protection for the inverter output circuit due to their location on the DC bus. > DC LINK CHOKES

Solid Copper Box lug type terminals on most sizes Օ UL-508 Component recognized (File #E180243) Specially constructed and epoxy impregnated for low noise Օ 100 Volts DC maximum Customized ratings also available՗contact factory for custom mounting, inductance, current or ripple requirements For ripple frequency of 300 Hz or 360 Hz Օ Suitable for 40 C ambient temperature Class B Insulation System (130C) Օ Suitable for ripple current of 10% peak-to-peak Touch safe terminals in many ratings > N83 W13330 Leon Road P. O. Box 9013 Menomonee Falls, Wisconsin 53052-9013 Toll Free 1-800-455-4MTE...