B_WH — medium-voltage asynchronous motors with air-air cooler IC611/616/666, up to 6.6 kV, up to 1,700 kW

Description

B_WH are medium-voltage asynchronous motors of closed design with an air-air heat exchanger mounted on the housing. The internal air circulates in a closed loop and is cooled by outside air through a tubular cooler; the cooling variants IC611 (self-ventilation of both circuits), IC616 (external circuit with an independent fan) and IC666 (both circuits with independent fans) allow operation both from the mains and from a frequency converter at low speeds. Parameters: power up to 1,700 kW (series announcement on the website: up to 5,100 kW), voltage up to 6600 V, frequency 50/60 Hz or variable speed, 4–12 poles, frame sizes 355–500, degree of protection IP44, IP54 or IP55, ambient temperature −20…+60 °C, welded steel housing, rolling or sliding bearings. Standard IEC 60034. The low-voltage B_W version is listed as a separate item. Typical options: PT100 temperature sensors in the stator winding, anti-condensation heaters, special voltage, preparation for vibration sensors, insulated bearing and earthing brush, horizontal or vertical design, neutral terminals in a separate box, lubrication system for sliding bearings. Application areas: cement, chemical, metallurgical, mining, pulp and paper and sugar industries, water supply and water treatment: pumps, fans, induced-draft fans, compressors, mills, conveyors. The closed design with a heat exchanger is suitable for dusty workshops and outdoor installation under a canopy.

Technical specifications