Grundfos MMS Series User Manual

English (GB)
11
5.5 Control of single-phase MS 402
5.6 Connection of single-phase motors
5.6.1 2-wire motors
MS 402 2-wire motors incorporate motor protection
and a starter device and can therefore be connected
directly to the mains. See fig. 9.
Fig. 9 2-wire motors
5.6.2 PSC motors
PSC motors are connected to the mains via a run
capacitor which must be sized for continuous
operation.
Select the correct capacitor size from the table
below:
MS 402 PSC motors < 1.1 kW incorporate motor
protection and must be connected to the mains as
shown in fig. 10.
Fig. 10 PSC motors
Warning
Single-phase MS 402 submersible motors
< 1.1 kW incorporate motor protection
which cuts out the motor in case of
excessive winding temperatures while the
motor is still supplied with voltage. Allow
for this when the motor forms part of a
control system.
TM00 1358 5092
Yellow/green Blue Brown
Motor [kW] Capacitor
0.25 12.5 μF / 400 V / 50 Hz
0.37 16 μF / 400 V / 50 Hz
0.55 20 μF / 400 V / 50 Hz
0.75 30 μF / 400 V / 50 Hz
1.10 40 μF / 400 V / 50 Hz
1.50 50 μF / 400 V / 50 Hz
2.20 75 μF / 400 V / 50 Hz
TM00 1359 5092
Yellow/green Grey Black Brown
www.motralec.com / service-commercial@motralec.com / 01.39.97.65.10

Grundfos MMS Series Specifications

General

Brand	Grundfos
Model	MMS Series
Category	Engine
Language	English