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Siemens CR 1 · 2015
6
Drive systems
SINAMICS S120 Cabinet Modules
General technical specifications
■
Overview
Degrees of protection
The EN 60529 standard covers the protection of electrical
equipment by means of housings, covers or equivalent, and
includes:
•
Protection of persons against accidental contact with live or
moving parts within the housing and protection of the equip-
ment against the ingress of solid foreign matter (touch protec-
tion and protection against ingress of solid foreign matter)
•
Protection of the equipment against the ingress of water
(water protection)
•
Abbreviations for the internationally agreed degrees of protec-
tion
The degrees of protection are specified by abbreviations
comprising the code letters IP and two digits.
Cabinet Modules fulfill the criteria for degree of protection IP20
as standard. The other degrees of protection outlined here are
available as an option.
Degree of protection
First digit
(touch protection and
protection against
ingress of solid foreign
matter)
Second digit
(protection of the equip-
ment against the ingress
of water)
IP20
(Standard)
Protected against solid
foreign matter
diameter
≥
12.5 mm
No water protection
IP21
(Option
M21
)
Protected against solid
foreign matter
diameter
≥
12.5 mm
Protected against drip
water
Vertically falling water
drops shall not have a
harmful effect.
IP23
(Option
M23
)
Protected against solid
foreign matter
diameter
≥
12.5 mm
Protected against spray
water
Water sprayed on both
sides of the vertical at an
angle of up to 60° shall
not have a harmful
effect.
© Siemens AG 2015