NORD Drivesystems MI0700 - Manual (Page 43)

2 Implementation
MI 0700 GB-0414 43
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2.7.1 Input choke
The input chokes SK CI1-4x0/xxx-C are connected upstream of the frequency inverter and restrict
the input current to nearly the output current of the frequency inverter.
The tables below allocate the input chokes to the power ranges of the two frequency inverter series
and compare them. The input chokes are UL-approved and should always be installed in the switch
cabinet because of their IP00 protection class. Input chokes have screw terminals for connection.
Information Input choke
It is recommended that an input choke is always used for frequency inverters with a power of more than 45 kW.
As a rule, you can continue using existing input chokes of type SK CI1-460/xxx-C of the SK 700E for the SK 5xxE
when migrating from the SK 700E to an SK 5xxE frequency inverter. For new installations and system extensions
with an SK 5xxE frequency inverter, an input choke of type SK CI1-480/xxx-C with higher rated voltage (see
tables below) should be planned and implemented.
1.5 kW to 15.0 kW
Input choke
SK CI1-460/xxx-C
Part No.
Name
Information
Data
Input choke
SK CI1-480/xxx-C
Part No.
SK CI1-460/6-C
276995004
Input choke
•
Power 1.5 kW and 2.2 kW
• 6.0 A continuous current
• 3 x 4.88 mH inductivity
SK CI1-480/6-C
276993006
SK CI1-460/11-C
276995010
Input choke
• Power 3.0 kW and 4.0 kW
• 11.0 A continuous current
• 3 x 2.93 mH inductivity
SK CI1-480/11-C
276993011
SK CI1-460/20-C
276995020
Input choke
• Power 5.5 kW and 7.5 kW
• 20.0 A continuous current
• 3 x 1.47 mH inductivity
SK CI1-480/20-C
276993020
SK CI1-460/40-C
276995040
Input choke
•
Power 11.0 kW and 15.0 kW
• 40.0 A continuous current
• 3 x 0.73 mH inductivity
SK CI1-480/40-C
276993040
Table 27: 1.5 kW – 15.0 kW input chokes