Electrical installation
The voltage on the frequency converter is
dangerous when the unit is connected to
mains. Incorrect installation of the motor
or the frequency converter may lead to
material damage or serious injury or it may
be fatal. Consequently, the instructions in
this manual as well as national and local
rules and safety regulations must be com-
plied with.
Touching the electrical parts may be fatal,
even after the mains supply has been dis-
connected.
Using VLT 5001-5006, 200-240
V and 380-500 V: wait at least 4
minutes.
Using VLT 5008-5052, 200-240
V: wait at least 15 minutes.
Using VLT 5008-5062, 380-500
V: wait at least 15 minutes.
Using VLT 5072-5302, 380-500
V: wait at least 20 minutes.
Using VLT 5352-5552, 380-500
V: wait at least 40 minutes.
Using VLT 5001-5005, 525-600
V: wait at least 4 minutes.
Using VLT 5006-5022, 525-600
V: wait at least 15 minutes.
Using VLT 5027-5062, 525-600
V: wait at least 30 minutes.
Using VLT 5042-5352, 525-690
V: wait at least 20 minutes.
Using VLT 5402-5602, 525-690
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.
High voltage test
A high voltage test can be carried out by short- circuit-
ing terminals U, V, W, L
1
, L
2
and L
3
and energizing by
max. 2.15 kV DC for one second between this short-
circuit and the chassis.
NB!
The RFI switch must be closed (position
ON) when high voltage tests are carried
out (see section
RFI Switch)
.
The mains and motor connection must be
interrupted in the case of high voltage
tests of the total installation if the leakage
currents are too high.
Safety earthing
NB!
The frequency converter has a high leak-
age current and must be earthed appro-
priately for safety reasons. Use earth
terminal (see section
Electrical installation,
power cables
), which enables reinforced
earthing.
Apply national safety regulations.
Extra protection (RCD)
ELCB relays, multiple protective earthing or earthing
can be used as extra protection, provided that local
safety regulations are complied with.
In the case of an earth fault, a DC content may develop
in the faulty current.
If ELCB relays are used, local regulations must be ob-
served. Relays must be suitable for protection of 3-
phase equipment with a bridge rectifier and for a brief
discharge on power-up.
See also the section
Special Conditions
in the Design
Guide.
Electrical installation - mains supply
Connect the three mains phases to terminals L
1
, L
2
,
L
3
.
Electrical installation - motor cables
NB!
If an unscreened cable is used, some
EMC requirements are not complied with,
see the Design Guide.
VLT
®
5000 Design Guide
62
MG.52.B2.02 - VLT
®
is a registered Danfoss trademark
