Safety clamp
If the galvanic isolation (PELV) between
control terminals and high-voltage termi-
nals is to be maintained, the accompany-
ing safety clamp must be fitted to VLT
2803-2815, 200-240 V, and VLT
2805-2815, 380-480 V.
Pre-fuses
For all unit types, external pre-fuses must be fitted in
the mains supply to the frequency converter. For UL/
cUL applications with a mains voltage of 200-240 Volt,
use pre-fuses type Bussmann KTN-R (200-240 Volt)
or Ferraz Shawmut type ATMR (max. 30A). For UL/
cUL applications with a mains voltage of 380-480 Volt,
use pre-fuses type Bussmann KTS-R (380-480 Volt).
Prefuses for UL application /cUL
Alternative fuses 380-500 V drives
VLT 2800
Bussmann
E52273
Bussmann
E4273
Bussmann
E4273
Bussmann
E4273
Bussmann
E4273
Bussmann
E4273
SIBA
E180276
Little Fuse
E81895
Ferraz-
Shawmut
E163267/
E2137
Ferraz-
Shawmut
E163267/
E2137
RK1/JDDZ J/JDDZ T/JDDZ CC/JDDZ CC/JDDZ CC/JDDZ RK1/JDDZ RK1/JDDZ CC/JDDZ RK1/JDDZ
2805-
2820
KTS-R20 JKS-20 JJS-20 FNQ-R-20 KTK-R-20 LP-CC-20 5017906-02
0
KLS-R20 ATM-R25 A6K-20R
2855-
2875
KTS-R25 JKS-25 JJS-25 5017906-02
5
KLS-R25 ATM-R20 A6K-25R
2880-
2882
KTS-R50 JKS-50 JJS-50 5014006-05
0
KLS-R50 - A6K-50R
Alternative Fuses 200-240 V drives
VLT 2800
Bussmann
E52273
Bussmann
E4273
Bussmann
E4273
SIBA
E180276
Little Fuse
E81895
Ferraz-
Shawmut
E163267/
E2137
Ferraz-
Shawmut
E163267/
E2137
RK1/JDDZ J/JDDZ T/JDDZ RK1/JDDZ RK1/JDDZ CC/JDDZ RK1/JDDZ
2803-2822 KTN-R20 JKS-20 JJN-20 5017906-02
0
KLS-R20 ATM-R25 A6K-20R
2840 KTN-R25 JKS-25 JJN-25 5017906-02
5
KLS-R25 ATM-R20 A6K-25R
Mains connection
Please note that at 1 x 220-240 Volt the neutral wire
must be attached to terminal N
(L2)
and the phase wire
must be connected to terminal L1
(L1)
.
No. N
(L2)
L1
(L1) (L3)
Mains voltage 1 x 220-240 V
N L1
No. 95 Earth connection
No. N
(L2)
L1
(L1) (L3)
Mains voltage 3 x 220-240 V
L2 L1 L3
No. 95 Earth connection
No. 91 92 93 Mains voltage 3 x 380-480 V
L1 L2 L3
No. 95 Earth connection
NB!
Please check that the mains voltage fits
the mains voltage of the frequency con-
verter, which can be seen from the name-
plate.
400-Volt units with RFI-filters may not be
connected to mains supplies in which the
voltage between phase and earth is more
than 300 Volts. Please note that for the IT
mains and the delta earth the mains volt-
age can exceed 300 Volts between phase
and earth. Units with type code R5 can be
connected to mains supplies with up to
400 V between phase and earth.
See Technical data for correct dimensioning of cable
cross-section. See also the section entitled Galvanic
isolation for further details.
VLT
®
2800 Series
MG.27.A2.02 - VLT
®
is a registered Danfoss trademark 67
Installation
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