SIEMENS
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Siemens D 83.1 · 2016
1
Introduction
General technical specifications
Degrees of protection and mechanical design
■
Overview
Degrees of protection acc. to EN 60034-5
All motors in the standard version correspond to
IP55 degree of
protection
. Other degrees of protection are available as an
option.
For all types of construction with the shaft extension pointing
downwards, a suitable cover that prevents small parts from
falling into the fan cover is essential. Exceptions to this rule are
cases in which the motor is mounted such that the machine
performs the function of the cover. This type of cover must,
however, not adversely affect the cooling air flow. Motors that are
installed outdoors must be protected against intensive exposure
to the sun.
Motors to IP67 degree of protection
Special motor versions can be supplied for installation in plants
which can be flooded occasionally, such as pumping stations.
They are suitable for temporary submersion at standstill for up to
72 hours in a maximum depth of water of 8 m. During the entire
period of submersion, the motor must not be in operation. To
ensure that the built-in fan of the motor or the forced ventilation
is not destroyed, the motor must be switched off before the water
level reaches the fan.
Special measures, such as special sealing around the shaft and
static joints in accordance with IP67 ensure that no water can
enter the motor for the duration of submersion. After connecting
the motor, the terminal box must be tightly sealed using the
supplied casting resin in accordance with the installation
instructions supplied with the motor.
Available types in IP67 degree of protection in frame size 160
and above:
•
1PS0 without explosion protection
•
1PS1 with type of protection Ex nA IIC
The technical specifications of the motors can be obtained from
the type descriptions.
Additional options that are appropriate for IP67 degree of
protection:
•
PTC thermistor for winding monitoring
•
Paint finish N14
•
Stainless steel screws
•
Anti-condensation heater
•
Built-on level switch
(not included in the scope of supply of the motor)
Degree of
protection
Scope of protection
Shock hazard protection and protection against the ingress of
foreign bodies (1st digit)
Protection against water (2nd digit)
IP54
Total protection against touching of live parts and against getting
near such parts as well as touching of moving parts inside the
enclosure.
Protection against harmful dust deposits:
Ingress of dust is not totally prevented, but dust will not
penetrate in sufficient quantities for satisfactory operation
of the machine to be affected.
Water sprayed from all directions onto the machine must not
have a harmful effect.
IP55
A jet of water from a nozzle that is aimed at the machine from all
directions does not have a harmful effect.
IP56
Water due to heavy seas, or water in a powerful jet, will not
penetrate the enclosure in any quantities that may cause
damage.
IP65
Total protection against touching of live parts and against getting
near such parts as well as touching of moving parts inside the
enclosure.
Protection against ingress of dust (dust tight).
A jet of water from a nozzle that is aimed at the machine from all
directions does not have a harmful effect.
© Siemens AG 2016