Danfoss VLT 5000 FLUX, Руководство по эксплуатации, Страница: 19 / 158

VLT
®
5000 FLUX
All about FCD
300
■
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 complied with.
Touching the electrical parts may be fatal, even after
the mains supply has been disconnected.
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 5350-5500, 380-500 V: wait
at least 15 minutes.
NB!:
It is the user ’ s or certified electrician ’ s
responsibility 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-
circuiting 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 leakage
current and must be earthed appropriately
for safety reasons. Use earth terminal
(see section Electrical installation, power cables ),
which enables reinforced earthing.
Apply national safety regulations.
■
Terminal designation
The terminal designations for power connections
are equal for all sizes of VLT inverters.
Mains terminals 91
R (L1) 92
S (L2) 93
T (L3)
Motor terminals 96
U 97
V 98
W
94 95 99 Earth terminals
Brake resistor
terminals 81
R+ 82
R-
Load sharing 88
-DC 89
+DC
■
Electrical installation - mains supply
Connect the three mains phases to terminals L
1
, L
2
, L
3
.
■
Motor connection
All types of 3-phased asynchronous standard motors
can be used with the frequency converter.
Normally, small motors are star-connected
(200/400 V, /Y).
Large motors are delta-connected (400/690 V, /Y).
Please be aware, that the motor cable must
be screened.
■
Motor thermal protection
The electronic thermal relay in UL-approved frequency
converters has received the UL-approval for single
motor protection when parameter 128 has been set for
ETR Trip and parameter 105 has been programmed to
the rated motor current (see motor nameplate).
MG.55.A6.02 - VLT is a registered Danfoss trademark
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