Siemens SIMOTICS Series Hardware Installation Manual

Commissioning
8.4 Test the insulation resistance
SIMOTICS M-1FE2 built-in motors
172 Hardware Installation Manual, 04/2020, A5E50074509B AA
Measures on overshooting or undershooting the critical insulation resistance
If the critical insulation resistance is less than or equal to this value, then the windings must
be dried or, if the fan is removed, cleaned thoroughly and dried.
Note
Lower resistance
Note that the insulation resistance of dried, clean windings is lower than that of warm
windings. The
correct insulation resistance must be achieved for a winding that has been
cooled down to room temperature (approx. 20
... 30 °C).

Siemens SIMOTICS Series Specifications

General

Product brand name	SIEMENS
Product designation	SIMOTICS
Efficiency Class	IE1, IE2, IE3, IE4
Ambient Temperature	+60°C
Altitude	Up to 4000 m
Frame Size	63 to 355
Protection Class	IP55, IP56, IP65