General information about electrical installation
High voltage warning
The voltage of the frequency converter is
dangerous whenever the equipment is
connected to mains. Incorrect installation
of the motor or the frequency converter
may cause damage to the equipment, se-
rious personal injury or death. Conse-
quently, the instructions in this Design
Guide, as well as national and local safety
regulations, must be complied with.
Touching the electrical parts may be fatal
- even after disconnection from mains: Us-
ing VLT 6002-6005, 200-240 V wait at
least 4 minutes
Using VLT 6006-6062, 200-240 V wait at
least 15 minutes
Using VLT 6002-6005, 380-460 V wait at
least 4 minutes
Using VLT 6006-6072, 380-460 V wait at
least 15 minutes
Using VLT 6102-6352, 380-460 V wait at
least 20 minutes
Using VLT 6402-6602, 380-460 V wait at
least 40 minutes
Using VLT 6002-6006, 525-600 V wait at
least 4 minutes
Using VLT 6008-6027, 525-600 V wait at
least 15 minutes
Using VLT 6032-6072, 525-600 V wait at
least 30 minutes
Using VLT 6102-6402, 525-600 V wait at
least 20 minutes
Using VLT 6502-6652, 525-600 V wait at
least 30 minutes
NB!
It is the user's or certified electrician's re-
sponsibility to ensure correct earthing and
protection in accordance with applicable
national and local norms and standards.
Earthing
The following basic issues need to be considered
when installing a frequency converter, so as to obtain
electromagnetic compatibility (EMC).
•
Safety earthing: Please note that the fre-
quency converter has a high leakage current
and must be earthed appropriately for safety
reasons. Apply local safety regulations.
•
High-frequency earthing: Keep the earth wire
connections as short as possible.
Connect the different earth systems at the lowest pos-
sible conductor impedance. The lowest possible con-
ductor impedance is obtained by keeping the conduc-
tor as short as possible and by using the greatest
possible surface area. A flat conductor, for example,
has a lower HF impedance than a round conductor for
the same conductor cross-section C
VESS
. If more than
one device is installed in cabinets, the cabinet rear
plate, which must be made of metal, should be used
as a common earth reference plate. The metal cabi-
nets of the different devices are mounted on the cabi-
net rear plate using the lowest possible HF impedance.
This avoids having different HF voltages for the indi-
vidual devices and avoids the risk of radio interference
currents running in connection cables that may be
used between the devices. The radio interference will
have been reduced. In order to obtain a low HF impe-
dance, use the fastening bolts of the devices as HF
connection to the rear plate. It is necessary to remove
insulating paint or similar from the fastening points.
Cables
Control cables and the filtered mains cable should be
installed separate from the motor cables so as to avoid
interference overcoupling. Normally, a distance of 20
cm will be sufficient, but it is recommended to keep the
greatest possible distance wherever possible, espe-
cially where cables are installed in parallel over a
substantial distance.
With respect to sensitive signal cables, such as tele-
phone cables and data cables, the greatest possible
distance is recommended with a minimum of 1 m per
5 m of power cable (mains and motor cable). It must
be pointed out that the necessary distance depends
on the sensitivity of the installation and the signal ca-
bles, and that therefore no precise values can be
stated.
If cable jaws are used, sensitive signal cables are not
to be placed in the same cable jaws as the motor cable
or brake cable. If signal cables are to cross power ca-
bles, this should be done at an angle of 90 degrees.
Remember that all interference-filled in- or outgoing
cables to/from a cabinet should be screened/arm-
oured or filtered.
See also
EMC-correct electrical installation.
VLT
®
6000 HVAC Series
68
MG.61.B5.02 - VLT
®
is a registered Danfoss trademark
Содержание VLT 6000 HVAC Series
Страница 31: ...Ordering form VLT 6000 HVAC Series MG 61 B5 02 VLT is a registered Danfoss trademark 31 Introduction to HVAC ...
Страница 63: ...Mechanical dimensions VLT 6000 HVAC Series MG 61 B5 02 VLT is a registered Danfoss trademark 63 Installation ...
Страница 75: ...VLT 6000 HVAC Series MG 61 B5 02 VLT is a registered Danfoss trademark 75 Installation ...
Страница 204: ...VLT 6000 HVAC Series 204 MG 61 B5 02 VLT is a registered Danfoss trademark ...