2.4.2.2 Earthing (Grounding) IP20
Enclosures
The frequency converter can be earthed (grounded) using
conduit or shielded cable. For earthing (grounding) of the
power connections, use the dedicated earthing
(grounding) points as shown in
.
130BC303.10
Illustration 2.5 Earthing (Grounding) Points for IP20 (Chassis)
Enclosures
CAUTION
GROUNDING HAZARD!
Do not use conduit connected to the frequency converter
as a replacement for proper grounding. Ground currents
are higher than 3.5 mA. Improper grounding can result in
personal injury or electrical shorts.
2.4.2.3 Earthing (Grounding) IP21/54
Enclosures
The frequency converter can be earthed (grounded) using
conduit or shielded cable. For earthing (grounding) of the
power connections, use the dedicated earthing
(grounding) points as shown in
.
130BC304.10
Illustration 2.6 Earthing (Grounding) for IP21/54 Enclosures.
CAUTION
GROUNDING HAZARD!
Do not use conduit connected to the frequency converter
as a replacement for proper grounding. Ground currents
are higher than 3.5 mA. Improper grounding can result in
personal injury or electrical shorts.
2.4.3 Motor Connection
WARNING
INDUCED VOLTAGE!
Run output motor cables from multiple frequency
converters separately. Induced voltage from output motor
cables run together can charge equipment capacitors even
with the equipment turned off and locked out. Failure to
run output motor cables separately could result in death
or serious injury.
•
For maximum cable sizes, see
.
•
Comply with local and national electrical codes
for cable sizes.
•
Gland plates are provided at the base of IP21/54
and higher (NEMA1/12) units.
•
Do not install power factor correction capacitors
between the frequency converter and the motor.
Installation
VLT
®
HVAC Drive D-Frame
Operating Instructions
12
MG16D102 - VLT
®
is a registered Danfoss trademark
2
2
