R…G – EC-Tube FansConstruction of steel
Impellers:The impellers are balanced together with the external rotor motors at two levels according to quality levelG2.5/G 6.3 DIN ISO 21940-11. Backward curved centrifugal impeller made of plastic.
Motor and Motor Protection:EC external rotor motors according to DIN EN 60034-5 are used, ball bearing mounted and with integratedthermal contact for motor protection.
The sleeplessly controllable EC motors are characterized by a very high degree ofefficiency, even in the partial load range, as well as good control and regulationbehavior. They are easy to connect, individually preconfigured, compact in designand demonstrate a high power density. The implementation of additional functions(e.g. volume flow and pressure control) is possible. All motors can be speedcontrolled in the range 0-100 %.The motor protection is integrated. All necessary parameters such as temperature,blocked rotor, over- and undervoltage and power are continuously checked andmonitored via intelligent fault management.