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4.1.10 Load Sharing
Terminal No.
Function
88, 89
Loadsharing
The connection cable must be screened and the max. length from the
frequency converter to the DC bar is limited to 25 metres (82 feet).
Load sharing enables linking of the DC intermediate circuits of several
frequency converters.
Please note that voltages up to 1099 VDC may occur
on the terminals.
Load Sharing calls for extra equipment and safety
considerations. For further information, see load
sharing Instructions MI.50.NX.YY.
Please note that mains disconnect may not isolate
the frequency converter due to DC link connection
4.1.11 Shielding against Electrical Noise
Before mounting the mains power cable, mount the EMC metal cover to
ensure best EMC performance.
NOTE: The EMC metal cover is only included in units with an RFI filter.
175ZT975.10
Illustration 4.15: Mounting of EMC shield.
4.1.12 Mains Connection
Mains must be connected to terminals 91, 92 and 93. Earth is connec-
ted to the terminal to the right of terminal 93.
Terminal No.
Function
91, 92, 93
94
Mains R/L1, S/L2, T/L3
Earth
NB!
Check the name plate to ensure that the mains volt-
age of the frequency converter matches the power
supply of your plant.
Ensure that the power supply can supply the necessary current to the
frequency converter.
If the unit is without built-in fuses, ensure that the appropriate fuses
have the correct current rating.
4 Electrical Installation
VLT HVAC Drive High Power Operating In-
structions
64
MG.11.F3.02 - VLT
®
is a registered Danfoss trademark
4