Hello Patrick,
In most of the developed world hospitals have their own (non-public)
low-voltage distribution system.
They have their own distribution transformer(s) and parts of the system may be
floating (e.g. European operating theatres) while other parts have emergency
back-up systems (certain OR or critical care outlets).
Hospitals, just like large office buildings are rarely directly connected to
the public low-voltage distribution system. Their electricity is normally
provided by a MV transformer.
This is not necessary true in lesser developed countries.
Best regards,
Dave Osborn
PM-CMS
Philips Medical Systems
+1 978 659 3178
fax +1 978 685 5624
dave.osb...@philips.com
plaw...@west.net
Sent by: To: EMC-PSTC
<emc-p...@ieee.org>
owner-emc-pstc@majordo cc: (bcc: Dave
Osborn/ANR/MS/PHILIPS)
mo.ieee.org Subject: Medical
equipment and EN61000-3-2
Classification:
09/18/2002 03:55 PM
Please respond to
plawler
The scope of EN61000-3-2:2001 says that the standard deals with harmonic
currents injected into the public low-voltage distribution system.
I can see that residences and offices are connected to the public system.
However, I don't know about distribution to hospitals.
Are their power requirements specialized enough that their electricity is
provided by a MV transformer? This would exempt hospital-only medical products
from the harmonic current requirements.
Or are their different levels of hospitals, some fed by LV transformers, some
fed by MV transformers?
----
Patrick Lawler
plaw...@west.net
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