2 Engineering
2.6 Approvals
CMD(220-240VAC), CMDB
12/17 MN121002ZU-DEEN
www.eaton.com
29
At an assumed operating frequency of 3 operations per day up to NZM2 and
1.33 operations per day for the NZM3 the MTTF
D
value is:
Table 3: MTTF
D
values for undervoltage releases
2.6 Approvals
The CMD contactor monitoring device is approved by the IFA in combination
with Eaton contactors and circuit-breakers (
overview”, page 24).
A CE declaration of conformity and a prototype test certification are also
available.
The contactor monitoring device CMD has UL and CSA approval for the US
and Canadian markets.
2.7 Product standard
The CMD contactor monitoring device meets the product standard for
Low-voltage switchgear and controlgear – Part 5-1:
Control circuit devices and switching elements – Electromechanical control
circuit devices, DIN/EN 60947-5-1 (IEC 60947-5-1).
2.8 Electromagnetic compatibility (EMC)
No particular EMC measures are required for the CMD contactor monitoring
device.
The CMD complies with the following regulations:
•
DIN/EN 61000-6-2: EMC generic standard,
interference immunity for the industrial environment,
•
DIN/EN 61000-6-4: EMC generic standard,
emitted interferences for the industrial environment.
Undervoltage
release
B
10D
value
n
op
MTTF
D
switch
operations
operations per
working day
operations/
year
years
NZM1
10000
3
750
133
NZM2
10000
3
750
133
NZM3
7500
1.33
333
225
→
An annual inspection meets the requirements in accordance
with section
section 2.4, “Average diagnostic coverage
DCavg”, page 26.
For further calculation of the safety function see EN/ISO 13849.