SECTION A
AC & DC ELECTRIC MOTORS
Are there special requirements to mount IEC B14 motors?
No special tooling is required. Please strictly follow motor side coupling mounting dimension tolerance as per the relevant drawings.
Failure to do so may cause malfunction of the power pack and even breakage of the coupling and pump.
Are AC motors compliant with the European Union Minimum Energy Performance Standards?
Hydronit AC motors are manufactured in Italy with the best technologies nowadays available and are specifically designed for mini
power pack duties, which are typically intermittent. Hydronit motors have higher power density, lower weight, lower cost, compared to
standard IE2 motors on the market. Due to the specific field of application, Hydronit motors are not included in the requirements of the
above mentioned standard, since they are specially and solely manufactured for mini power pack intermittent duties. For continuous
duty applications IE2 motors (IEC 60034-30) must be applied. Ask our sales office.
Can I start single phase AC motors under load?
All single phase motors have a reduced starting torque due to their intrinsic design. Normally this ranges around 30~40% of the
nominal torque at full power output. When designing circuits where a single phase motor must start under load, correct sizing must be
done and a field test must be performed first. High starting torque motors are available on request to overcome these issues.
Please ask our technical office.
How do I dimension a DC motor?
These motors are normally for intermittent duty. It is important to know required flow in l/min, working pressure in bar and the duty
cycle. The A040 table instructions on the following pages allow a proper motor/pump combination selection.
Integral AC motors: the engineered solution for compact and optimised power units from 0,25 to 1,8 kW, single or three
phase. The AC motors are directly flanged on the central manifold for extra compactness.
A single coupling can suit all powers. We suggest that you adopt these advanced motors because of their special
advantages over standard B14 IEC AC motors and because they are designed specifically for use on our micro power
packs, offering higher power density than market standard motors. These motors are intendend for intermittent use (S3
40%), which is the case for most micro-power pack applications. They can be used in emergency situations continuously at a
reduced rated power (about 30% less than S3 nominal power).
Single phase motors should not run in any case without load for long periods to avoid overheating.
Frame 80 DC motors: with or without thermal
protector and running time up to 6 min. Power from
0,15kW up to 0,8kW 12 or 24VDC.
The permanent magnet construction allows their use
in reversible units.
Frame 114 DC motors: power up to 2,2kW 24VDC for
high performance.
All motors have thermal protector switch as standard.
sales@hydronit.com · +39 02 320 625 145
PPM2014/1-A000
www.hydronit.com
B14 IEC standard AC motors: the standard
solution easily available on every market from 0,12
to 0,55 kW, single or three phase. These motors are
normally procured by the customer itself. Hydronit
provides adaptor flanges and double piece coupling
for frame size: 63 and 71.