KEB COMBIVERT F5 User Manual

14
General
Connection of the F5 series inverters to voltage systems con gured as a
corner grounded delta, center tap grounded delta, open delta, or ungrounded
delta, may defeat the internal noise suppression of the inverter. Increased high
frequency disturbance in the controller and on the line may be experienced.
A balanced, neutral grounded wye connection is always recommended. The
three phase voltage imbalance must be less than 2% phase to phase. Greater
imbalance can lead to damage of the inverter's power circuit.
1.5.3 Disconnect switch
A disconnect switch or contactor should be provided as a means of turning off the
supply voltage when the unit is not in use or when it must be serviced.
Repetitive cycling on and off of the input supply voltage more than once every
two minutes can lead to damage of the inverter.
1.5.4 Fusing
Integral solid state short circuit protection does not provide branch circuit
protection. Branch circuit protection must be provided in accordance with the
Manufacturer Instructions, National Electrical Code (NFPA70 or CSA22.1) and
any additional local codes.
Branch circuit protection for the F5 must be provided using the fuses as listed in
the tables 1.5.4.1 and 1.5.4.2 below. Fast acting class J fuses are recommended.
As an example, use BUSSMANN type JKS. For installations supplied by an
isolation transformer and that have harmonic  lters installed, a high speed
class J fuse must be used (only Ferraz type HSJ is approved).
The minimum voltage rating for protection devices used with 230V inverters shall
be 250VAC. The minimum voltage rating for protection devices used with 460V
inverters shall be 600VAC.
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Table 1.5.4.1 - 230V Units
* Semiconductor fuses are manufactured by Siba Fuse Inc. When using this type of fuse,
this is the model number of the fuse is the fuse that must be used.
SCCR UL 248 Semiconductor UL 489
Unit Size /
Housing
[kA]
rms
Class J
Rating [A]
Fuse Number* /
Rating [A]
MCCB [A] /
Siemens Cat. No.
13 / E 10 40
50 140 06 80 / 80
14 / G 10 50
50 140 06 100 / 100
15 / G, H 10, 18 70
50 140 06 80 / 80
16 / H 18 90 - -
17 / H 18 110 - -
18 / R 100 125 - - 150A / DG-frame 3VL 150 UL
19 / R 100 150 - - 150A / DG-frame 3VL 150 UL
20 / R 100 175 - - 250A / FG-frame 3VL 250 UL
21 / R 100 200 - - 250A / FG-frame 3VL 250 UL
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KEB COMBIVERT F5 Specifications

General

Brand	KEB
Model	COMBIVERT F5
Category	DC Drives
Language	English