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Configuration
16
11/01 AWB2300-1433GB
Example
:
I
A
/
I
N
= 6,
t
E
= 18 s
Figure 6:
Tripping curve with 3-phase balanced load
The motor is safely protected with the tripping classes CLASS
5, 10 and 15.
Approvals
The motor-protective system ZEV is compliant with
IEC/EN 60947 regulations for low-voltage switchgear and
EN and fulfils the requirements of the 94/9/EC (ATEX 100a)
directives for the protection of motors operated in EEx e
areas.
The system is approved by UL and CSA for the USA and
Canada.
CLASS 40
10000
10000
100
10
18
100
1
0.1
1
6
10
100
35
30
25
20
15
10
CLASS 5
t
A
s
ms
l
e
x
l
e
c
0102
II(2)G
U s