ABB ABB-48431-518 Enclosed Standard Braking Resistor, 1 Ohm, 90000 W, For Use With ACS850 Series AC Drives
AC variable frequency drives are commonly used with a general purpose AC induction motor to form a reliable variable speed drive system. For applications that require faster deceleration rates or where motor speeds are exceeding the synchronous speed set by the output frequency of the drive (an overhauling load condition), a braking resistor is required. Braking resistors increase the braking torque capability of a variable frequency drive, producing faster and more controlled braking. The resistor dissipates regenerated power to keep the bus voltage from exceeding the rated limit of the drive. The type ED enclosures are designed for applications requiring a large number of type SXR, WR, VR and/or ER resistor coils. In addition to the large capacity, these units are supplied with terminal connections up to 400 A continuous located on a terminal plate in the bottom of the enclosure. These factory wired connections allow standard 90 deg C rated wire to be used if routed along the enclosure bottom. If installing without the optional terminal connections, always use 200 deg C rated silicone or PTFE wire when attaching directly to resistors. A normally closed thermal switch is also provided, which is used to detect resistor temperature overloads.
ABB Braking Resistor, Enclosed Standard, 1 Ohm, 90000 W Wattage, For Use With: ACS850 Series AC Drives, 30 in W x 18 in D x 48 in H Dimensions
|Dimensions||:||30 in W x 18 in D x 48 in H|
|Suitable For Use With||:||ACS850 Series AC Drives|