Dear All,
A CO equipment with a 48 Vdc nominal supply has coxial cable
connection to an outdoor transmitter. I have the following questions:
1. The coaxial cable output is conductively connected to the input.
It carries the same voltage and an amperage of 1 A (limited to 3 A
max). Assuming
Thought this might be of interest to a few of my friends in the EMC-PSTC group.
[actually, given the location, I think it would be of interest to everyone. Its
just that only a few of you may be component packaging experts.] I have no
formal association with this group other than being on
Hi Doug:
The picture shows three wires. I assume this is
a DELTA configuration, since a WYE configuration
requires four wires.
I agree with you that most power distribution is
the DELTA configuration.
I suppose one might claim that the fourth conductor
of the WYE is the ground. I would
As far as Schaffner is concerned, see Page 12 of their new EMC products
catalog (690-505A/6/98) concerning their emCell.
If clearly says; under Emission testing TEM-Cell products have limited
applicability to radiated testing, as it is very difficult to correlate
near-field measurements with
At 12:39 PM 11/30/98 -0800, ed.pr...@cubic.com wrote:
Hi Listmembers!
I recently came across a Lineman's Web site which has a series of three
pictures showing the near electrocution of a man who climbed a power pole
topped with a 16.6KV 3 phase power bus. I think the content is reasonably
We are thinking about building a portable pre-compliance EMC site. Has
anyone had any experience with this? Also does anyone know of vendors that
we can obtain a portable ground plane and a portable electric turntable. We
will probably want to measure at 3 meters and we have not yet looked at
Dear Group Members,
I'm looking for high accuracy (+/-3%) Air Velocity Meter/Analyzer any
information will be very appreciated.
Best Regards,
Leszek M. Langiewicz
Astec Advanced Power Systems (formerly NORTEL)
Design Verification
Homologation/Physical Verification
* E-mail:
Hi folks,
A question regarding EMC testing in so called test cells (like the
emCell from Schaffner or the S-Line from Rhode Schwarz).
I thought that those cells (based on the TEM Cell theory) are not suited
for emission testing because the small dimensions give near field
readings.
But
This was regard passivated zinc chromate plating on steel:
there are two common classes, one is more durable in terms of cosmetic
protection but results in very poor galvanic continuity between
mechanically mating parts and thus is not suitable where EMI
considerations are concerned. This class
Don,
The yellow... could mean a yellow chromate film(coating) on aluminum
metal(for example) applied for corrosion protection. The advice not to used
is because of the high impedance. The film EMC people use is clear because
of the low impedance. For yellow, purple, etc there is good corrosion
Don't have the figures to hand but having checked it out a while ago we
have moved from the gold/yellow zinc passivation on steel parts to the
silver/clear finish:
UK spec: BRIGHT ZINC PLATE TO BS 1706 Fe/Zn 8 c 1A
US spec: BRIGHT ZINC, ASTM B633, TYPE III, Fe/Zn 8
This has a much lower
Try Chromate...
Thank you
Charles Grasso
StorageTek
2270 Sth 88th Street
Louisville CO 80027 MS 4262
gra...@louisville.stortek.com
Tel:(303)673-2908
Fax(303)661-7115
--
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