5
Electrical installation
Ambient conditions during operation
Operating Instructions – EDR..71 – 315, EDRN63 – 315
66
5.11
Ambient conditions during operation
5.11.1
Ambient temperature
The temperature range of -20 °C to +40 °C must be ensured unless otherwise spe-
cified on the nameplate.
Motors intended for use in higher or lower ambient temperatures will have the respect-
ive designation on the nameplate.
If the motors are used at an ambient temperature above +40 °C (max. +60 °C), the
cables and cable glands must be suitable for temperatures ≥ 90 °C.
Temperatures below -20 °C (max. -40 °C) require anti-condensation heating. In addi-
tion, the cables and screw fittings must be selected according to the relevant tempera-
ture.
5.11.2
Motor power depending on the installation altitude
The following diagram shows the factor f
H
by which the motor power is reduced as a
function of the installation altitude.
The illustration applies only to category 3. The maximum installation altitude is 1000 m
in category 2.
0
0.2
0.4
0.6
0.8
1
0
1000
2000
3000
4000
5000
6000
f
H
H [m]
28193055115
The reduction is calculated as follows: P
H
= f
H
× P
N
The current is calculated as follows: I
H
= f
H
× I
N
25896334/EN – 06/2019