Degree Of Protection - Siemens SIMOTICS XP 1MB1 series Operating Instructions Manual

Basic type of construc-
tion code
IM B35 (IM 2001)
IM B34 (IM 2101)
Types of construction/Installation conditions for explosion-proof machines
The type of construction of the machine is stated on the rating plate.
In the case of explosion-proof machines where the shaft extensions point downwards (types
of construction IM V5, IM V1 or IM V18 ) a protective top cover is mandatory. Explosion-
proof machines with IM V5, IM V1 and IM V18 types of construction are fitted with a canopy
at the factory.
Table 3- 4
3.3.6

Degree of protection

The machine has a type of protection as stamped on the rating plate, and can be installed in
dusty or humid environments.
Machines intended for use in Zone 1 (type of protection flameproof enclosure "db" or
increased safety "eb") or in Zone 2 (type of protection "ec") are designed with IP 55 degree
of protection.
Machines intended for use in Zone 1 (increased safety "eb") or in Zone 2 (type of protection
"ec") are designed with an IP 55 degree of protection.
Machines intended for use in Zone 21 (dust explosion protection "tb") have IP 65 degree of
protection. Machines intended for use in Zone 22 (dust explosion protection "tc") have IP 55
degree of protection and can be used in dusty environments such as in grinders, silos,
animal feed plants, and malthouses, as well as in certain areas of the chemical industry.
1LA5/6/7/9, 1LG4/6, 1MA6/7, 1MB..1/2/3/4/5 - SH 63 ... 355
Operating Instructions, 06/2018, A5E44455710A
Diagram
Construction type with protective top cover
Conditions of installation
IM V5 (IM 1011)
IM V1 (IM 3011)
IM V18 (IM 3611)
Graphics-Based Representation
Description
3.3 Installation
27