INSTALLATION
SINUS K
INSTRUCTIONS
152/
191
13.5.3.
O
UTPUT
I
NDUCTANCE
Installations requiring a longer distance between the inverter and the motor may cause overcurrent protections
to frequently trip. This is due to the wire parasite capacity generating current pulses at the inverter output. This
current peak may be limited by an inductance installed on the inverter output. Screened cables even have a
higher capacity and may have problems with a shorter length. The recommended output inductance is the same
that can be installed at the inverter input (see previous section). The max. distance between the motor and the
inverter is given as an example, as parasite capacity is also affected by the type of wiring path and wiring
system. For instance, when several inverters and their connected motors are networked, segregating the inverter
wires from the motor wires will avoid capacitive couplings between the wiring of each motor. In that case, a
reactance should be installed at the output of each inverter.
Motor wiring with unscreened cables
2-4-6-pole MOTORS
Size
Up toS10
Up toS30
Up toS40
FromS40
Cable
Length 30 60 90 120 150
>
150 mt.
8-10 pole MOTORS
CAUTION
Inductance stated in the tables above may be used when the inverter output
frequency does not exceed 60 Hz. For a higher output frequency a special inductance
for the max. allowable operating frequency must be used; please contact Elettronica
Santerno S.p.A.
NOTE
When using > 10 - pole motors an output inductance is always required.
NOTE
When using parallel-connected motors, always consider the total length of the cables
being used (sum of the cable length of each motor).
Size
Up toS10
Up toS30
Up toS40
FromS40
Cable Length
30
60
90
120 >120
mt.
No output inductance is required
Output inductance is required
Содержание SINUS K
Страница 49: ...SINUS K INSTALLATION INSTRUCTIONS 49 191 S65 T S R U V W S64 Figure 8 Installation Example of a SINUS K S64 S65...
Страница 157: ...SINUS K INSTALLATION INSTRUCTIONS 157 191 Figure 75 Mechanical features of an AC 3 phase inductance...
Страница 186: ...INSTALLATION SINUS K INSTRUCTIONS 186 191 15 DECLARATIONS OF CONFORMITY...
Страница 187: ...SINUS K INSTALLATION INSTRUCTIONS 187 191...
Страница 188: ...INSTALLATION SINUS K INSTRUCTIONS 188 191...
Страница 189: ...SINUS K INSTALLATION INSTRUCTIONS 189 191...
Страница 190: ...INSTALLATION SINUS K INSTRUCTIONS 190 191...
Страница 191: ...SINUS K INSTALLATION INSTRUCTIONS 191 191...