11000 V Slip ring motor replacement within three days

Electric motor manufacturer Menzel Elektromotoren from Berlin, ended a serious production interruption at a cement plant in Great Britain. After only three days following the failure of both the mill drive and the existing reserve motor, the plant operators suddenly faced a full-scale production shutdown. On a Friday night, they turned to German motor manufacturer Menzel with a request for the delivery of a replacement slip ring motor – and by Monday, an identical motor with customized modifications had already left the workshop of Menzel Berlin. A prolonged and very costly production downtime was thus averted in record time.

Such a quick response was possible mainly because of Menzel's comprehensive stock of over 20,000 motors in a power range up to 15,000 kW. A suitable slip ring motor with 2300 kW, 11000 V nominal voltage and a speed of 992 min-¹ that matched the original motor's features – namely constantly running brushes, roller bearings for grease lubrication, and two free shaft ends – was therefore readily available. The availability of in-house load test fields at Menzel also contributed substantially to the very fast delivery time.

Technical characteristics:

• Type: MEBSSL630G-06
• Rated Power: 2300 kW
• Voltage: 11000 V
• Frequency: 50 Hz
• Poles: 6
• Rated Speed: 992 min-1
• Mounting: IM B3
• Protection: IP 55
• Cooling: IC 611
• Weight: 15000 kg