Over Temperature Contactor; Power Wiring Size - Danfoss VLT AHF 005 Operating Instructions Manual

Over temperature contactor

The Danfoss harmonic filter AHF 005 and AHF 010 is equipped with a galvanic isolated contactor that is closed
under normal operating conditions and open if the filter is overheated. This contactor must be used to prevent
damages to the filter caused by over temperature as shown in the following example.
NB!
The maximum rating of the over temper-
ature contactor is 250V AC and 10A.

Power wiring size

Power wiring size
Enclosure Max. cable size
B
C and D
E, F, G and H
Overheat contactor (copper)
Enclosure Max. cable size
Capacitor disconnect (copper)
Enclosure Max. cable size
B
C and D
E, F, G and H
*Power wiring used for connection of the filter AHF 005
and AHF 010 in enclosure size E, F and G must be
terminated with cable lugs that can be attached to the
input and output bus bars terminals. This type of ter-
®
MG.80.B5.02 - VLT is a registered Danfoss trademark
Example: Connect terminal A of the harmonic filter to
terminal 12 or13 (voltage supply digital input, 24V) of the
Danfoss frequency converter and terminal B to terminal
27 (digital input "Coast Inverse") the frequency converter
will let go of the motor (coasting) and thereby unload the
filter if a over temperature is detected.
AWG
2
mm
16 6
50 1
* *
AWG
2
mm
4
AWG
2
mm
4 10
16 6
50 1
AHF 005/010
Type
Connector
Connector
Bus Bars
Type
Connector
Type
Connector
Connector
Connector
mination imposes no specifications of the minimum
and maximum cable size suitable for connection. Pow-
er terminal details regarding the bus bars can be found
in the figures below.
Nom. Fix Torque
2 Nm
6 Nm
25 Nm
Nom. Fix Torque
0.6 Nm
Nom. Fix Torque
0.6 Nm
2 Nm
6 Nm
15