SIEMENS
1/50
Siemens D 83.1 · 2016
1
Introduction
General technical specifications
Coolant temperature and installation altitudes
■
Overview
SIMOTICS XP 1MD5 motors
The rated power specified in the selection tables is applicable
for continuous duty in accordance with EN 60034-1 at the
frequency of 50 Hz, a coolant temperature (CT) or ambient
temperature of 40 °C and an installation altitude (IA) up to
1000 m above sea level.
For higher coolant temperatures and/or installation altitudes
greater than 1000 m above sea level, the specified motor power
must be reduced using the factor k
HT
.
This results in an admissible power of the motor of:
P
adm
=
P
rated
· k
HT
P
adm
Admissible motor power in kW
P
rated
Rated power in kW
k
HT
Factor for abnormal coolant temperature and/or
installation altitude
If the admissible motor power is no longer adequate for the
drive, it should be checked whether the motor with the next
higher rated power fulfills the requirements.
The motors are designed for temperature class 155 (F) and
utilized in temperature class 130 (B). Under non-standard
operating conditions, if they are to be used in this class, the
admissible power must be determined from the tables below.
If the coolant temperature differs from the standard +40 °C, for
compliance with explosion protection standards the option
C22
for +45 °C or
C23
for +50 °C must be selected for the applicable
coolant temperature. The maximum coolant temperature as well
as the reduced power are stamped on the rating plate.
Reduction factor k
HT
for different installation altitudes and/or
coolant temperatures
The coolant temperature is rounded up to the next 5 °C.
LOHER CHEMSTAR
For motors of the LOHER CHEMSTAR series, the power ratings
or reduced power ratings listed in the following tables apply for
the specified coolant temperatures and installation altitudes for
a winding utilization of 130 °C (B). The options specified here
must be explicitly ordered. The coolant temperature and power
are stamped on the rating plate.
Installation altitude
above sea level
Coolant temperature
40 °C
45 °C
50 °C
1000 m
1.00
0.96
0.92
© Siemens AG 2016