25DC Drives 25DC Drives
Appendix
—
Environmental conditions
System connections Environmental limit values
≤
Permissible cooling air temp.
Voltage deviation:
- at converter module air inlet:
Rated frequency: with rated DC current:
Static frequency deviation: with different DC current:
Dynamic: frequency range: - Options:
df/dt:
Please note: Special consideration must be taken for voltage
deviation in regenerative mode.
Change of the ambient temp.:
Storage temperature:
Degree of protection Transport temperature:
Converter module and options (line
chokes, fuse holder, field exciter,
etc.):
Overvoltage category
III
Protective class Site elevation
I
with current reduction,
Paint finish
Converter module: Permissible supply systems: IT, TN, TT (neutral earthed),
IT (corner earthed),
TT (corner earthed)
Enclosed converter:
Sound pressure level and vibration
Size Sound pressure level LP
Vibration
as module enclosed conv. as module
-
North American Standards
In North America the system components fulfil the
requirements of the table below
Rated
supply
Standards
voltage Converter module Enclosed converter
Power Conversion Equipment
Industrial Control Equipment,
Industrial Products
Available for converter modules
including field exciter units. Types
with UL mark:
see UL Listing www.ul.com /
UL/CSA types: on request
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