IQ motors meet the requirements of EN15714-2 (electric actuators) and comply with IEC60034 and NEMA MG1 where applicable. The motor is designed to reach full speed within 3 cycles of the mains frequency (approximately 60 ms for 50 Hz and 50 ms for 60 Hz). The motor torque / speed characteristic has been selected to fulfil the following requirements:

High Stall Torque in comparison with that required to operate and seat the valve. This is essential in maintaining the rated torque at reduced voltage conditions

Pull out torque available at speed (50-70% of synchronous), which combined with the lost motion drive (hammerblow), allows the motor to reach full speed with maximum available torque before the drive is applied to the valve. This ensures good un-seating of all valve types unless fully jammed.

Motor Design

Motors are designed specifically for IQ actuators and have the following features:

• Low inertia rotors
• Squirrel cage construction
• Induction windings
• TENV - Totally Enclosed Non-Ventilated
• Class F insulation
• Class B temperature rise
• Dual embedded thermostat (132 °C)
• Sealed / lubricated for life bearings
• Integral to the actuator