SEW-Eurodrive MOVITRANS THM20C, Operating Instructions Manual

Page: 38 / 64

38
Operating Instructions – MOVITRANS® THM20C / THM20E Pick-Ups
6
Technical data of THM20E
Technical Data
Pick-up character-
istic curves The following characteristic curves show the transmittable power P
4
of the pick-up
against the following values:
• Ambient temperature ϑ [°C]
• Time under load t [s]
• Line cable current I
L
[A]
• Line cable distance x [mm]
• Temperature rise factor k
1
Transmittable
power at I
L
= 60 A,
x = 10 mm
The following figure shows the transmittable power for the following values:
• Line cable current I
L
= 60 A
• Line cable distance x = 10 mm
INFORMATION
• The first inflection point of the characteristic curve occurs at a pick-up temperature
ϑ
K
of 65 °C. From this point on, the pick-up power P
4
decreases with increasing
pick-up temperature ϑ
K
almost linearly with the pick-up temperature ϑ
K
.
• The second inflection point of the characteristic curves occurs at the maximum
pick-up temperature ϑ
K
of 85 °C. At this temperature, the maximum continuous
power P
2
is reached at the corresponding ambient temperature. The temperature
rise factor k
1
determines the magnitude of the temperature rise ∆ϑ compared to the
ambient temperature ϑ , based on the transmitted continuous power P
2
.
• The temperature values ϑ in the characteristic curves refer to installation condition
E
1
( → chapter "Notes on pick-up characteristic curves" (page 33)).
2714152203
[1] ϑ = 20 °C / k1 = 32
[2] ϑ = 30 °C / k1 = 29.4
[3] ϑ = 45 °C / k1 = 32.6
500
1000
1500
2000
2500
3000
0 400 800 1200 1600 2000 2400 2800 3200
[1]
[3]
[2]
P
4
[W]
t[s]
P
i
f
kVA
Hz
n