Since there are no comments on this so far, I thought I would put my 2
cents in.It seems to me that motor drives would be in group 1, keeping
in mind the first paragraph of appendix A where it says "for testing
purposes the equipment is to be defined in terms of the purpose for which
it was d
he purpose of trying to determine if it
would fall under the Group 2 classification. My current thinking is that it
would.
Let me know if you disagree.
Thanks,
Brian Kunde
LECO
- Original Message -
From: Bailin Ma
To: Brian At Work ; IEEE Group
Sent: Friday, October 08, 1999 6:07 PM
Subjec
My current thinking is that it
would.
Let me know if you disagree.
Thanks,
Brian Kunde
LECO
- Original Message -
From: Bailin Ma
To: Brian At Work ; IEEE Group
Sent: Friday, October 08, 1999 6:07 PM
Subject: re: EN55011 Group 1 and Group 2
Brian,
Here is my two cents worth:
RF
Brian,
Here is my two cents worth:
RF energy generated by Group 1 is intentionally only for internal function.
And Group 2 intentionally generates RF for their working objects.
Thus an electronic microscope (which is not a "smaller bench type test
equipment" -- see your Email) falls under Gro
Brian,
You hit the nail on the head when you stated "uses RF in some way to heat,
melt,
or spark erode" to describe Group 2 devices. That's the main distinction. In
Group 1 devices the RF is used for the internal functioning of the equipment
itself (clock signals). In Group 2 devices, the RF
Hello Bruce and EMC-ESPC Group,
The latest draft on next edition of (EN/) IEC 61800-3 is using the CISPR 11
Class A group 2 limits for power drive systems to be used in "Second
environment" = Industrial use.
The radiated emission limits are 40 dB from 30 - 230 MHz and 50 dB from 230 -
1000 MHz
Please be advised that the emission limit figures you quote in your
referenced e-mail are _not_ for ClassA Grp2 equipment, but for ClassA, Grp1
equipment. CISPR 11 also specifies 10m distance for this 40dB level.
---
This message is from the IEEE EMC So
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