Danfoss Vacon NXP Series User Manual

WARN I N G
LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the drive properly can result in death or serious injury.
-
Ensure the correct grounding of the equipment by a certified electrical installer.
The standard EN 61800-5-1 tells that 1 or more of these conditions for the protective circuit must be true.
The connection must be fixed.
• The protective earthing conductor must have a cross-sectional area of minimum 10 mm
2
Cu or 16 mm
2
Al. OR
•
There must be an automatic disconnection of the mains, if the protective earthing conductor breaks. OR
• There must be a terminal for a second protective earthing conductor in the same cross-sectional area as the first protective
earthing conductor.
Cross-sectional area of the phase conductors (S) [mm
2
]
The minimum cross-sectional area of the protective earthing
conductor in question [mm
2
]
S ≤ 16 S
16 < S ≤ 35 16
35 < S S/2
The values of the table are valid only if the protective earthing conductor is made of the same metal as the phase conductors. If this is
not so, the cross-sectional area of the protective earthing conductor must be determined in a manner that produces a conductance
equivalent to that which results from the application of this table.
The cross-sectional area of each protective earthing conductor that is not a part of the mains cable or the cable enclosure, must be a
minimum of:
• 2.5 mm
2
if there is mechanical protection, and
•
4 mm
2
if there is not mechanical protection. With cord-connected equipment, make sure that the protective earthing conductor in
the cord is the last conductor to be interrupted, if the strain-relief mechanism breaks.
Obey the local regulations on the minimum size of the protective earthing conductor.
NOTIC E
MALFUNCTION OF FAULT CURRENT PROTECTIVE SWITCHES
Because there are high capacitive currents in the AC drive, it is possible that the fault current protective switches do not
operate correctly.
NOTIC E
VOLTAGE WITHSTAND TESTS
Doing voltage withstand tests can damage the drive.
-
Do not do voltage withstand tests on the AC drive. The manufacturer has already done the tests.
Electrical Installation
Operating guide | VACON® NXS/NXP Air-cooled
DPD00910G | 43
Danfoss A/S © 2018.06

Danfoss Vacon NXP Series Specifications

General

Brand	Danfoss
Model	Vacon NXP Series
Category	Controller
Language	English