ELR H3-IES-PT- 24DC/500AC-...
105518_en_01 17
PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany
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12 Derating curves for 100%operating time
Additional data is available on request.
Figure 7 Derating curve
The adjustment factors described here refer to hybrid motor
starters with a maximum load current of 9A. You can deter-
mine the maximum permissible rated current of the motor
using the load current, the overcurrent factor (see data sheet
of the relevant motor), and the 9A derating curve.
0 10203040506070
0
1
2
3
4
5
6
7
8
9
I=9A
t
A
[°C]
I [A]
L
I = 2,4 A
I=9A
I = 0,6 A
I
L
= Load current [A]
t
A
= Ambient temperature [°C]
I
A
= Starting current [A]
= Aligned with 20mm spacing
= Aligned without spacing
9A derating curve
Overcurrent factor I
A
/I
N
12345678910
Adjustment factor K111110.960.830.720.640.58
Overcurrent factor 1 Utilization category AC-51
Overcurrent factor 8 Utilization category AC-53a
Example 1
Motor with overcurrent factor I
A
/I
N
(from motor
data sheet)
8
Adjustment factor K 0.72
Max. permissible load current I
L
at30°C, not
aligned (from derating curve)
9 A
Max. permissible rated current I
N
of the motor 6.5A
Example 2
Motor with overcurrent factor I
A
/I
N
(from motor
data sheet)
5
Adjustment factor K 1
Max. permissible load current I
L
at60°C, aligned
(from derating curve)
3.2 A
Max. permissible rated current I
N
of the motor 3.2 A
