EasyManuals Logo
Home>Danfoss>DC Drives>vlt aqua

Danfoss vlt aqua Design Guide

Danfoss vlt aqua
228 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #150 background imageLoading...
Page #150 background image
5.4 Connections - Frame sizes D, E and F
5.4.1 Power Connections
Cabling and Fusing
NOTE!
Cables General
All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper (167°F [75°C])
conductors are recommended.
The power cable connections are situated as shown below. Dimensioning of cable cross-section must be done in accordance with the current ratings and
local legislation. See the
Specifications section
for details.
For protection of the adjustable frequency drive, the recommended fuses must be used or the unit must be with built-in fuses. Recommended fuses can
be seen in the tables of the fuse section. Always ensure that proper fusing is made according to local regulation.
The AC line input connections are fitted to the line power switch if this is included.
NOTE!
The motor cable must be shielded/armored. If an unshielded/unarmored cable is used, some EMC requirements are not complied with.
Use a shielded/armored motor cable to comply with EMC emission specifications. For more information, see
EMC specifications
in the
Design Guide
.
See section
General Specifications
for correct dimensioning of motor cable cross-section and length.
Shielding of cables:
Avoid installation with twisted shield ends (pigtails). They spoil the shielding effect at higher frequencies. If it is necessary to break the shield to install
a motor isolator or motor contactor, the shield must be continued at the lowest possible HF impedance.
Connect the motor cable shield to both the de-coupling plate of the adjustable frequency drive and to the metal housing of the motor.
Make the shield connections with the largest possible surface area (cable clamp). This is done by using the supplied installation devices within the
adjustable frequency drive.
Cable-length and cross-section:
The adjustable frequency drive has been EMC tested with a given length of cable. Keep the motor cable as short as possible to reduce the noise level
and leakage currents.
Switching frequency:
When adjustable frequency drives are used together with sine-wave filters to reduce the acoustic noise from a motor, the switching frequency must be
set according to the instructions in par. 14-01
Switching Frequency
.
5 How to Install VLT
®
AQUA Drive Design Guide
5-32
MG.20.N5.22 - VLT
®
is a registered Danfoss trademark
5

Table of Contents

Other manuals for Danfoss vlt aqua

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Danfoss vlt aqua and is the answer not in the manual?

Danfoss vlt aqua Specifications

General IconGeneral
BrandDanfoss
Modelvlt aqua
CategoryDC Drives
LanguageEnglish

Related product manuals