Siemens SINAMICS S120 Technisches Handbuch - Seite 4

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Auch für Siemens SINAMICS S120: Betriebshandbuch (20 seiten), Erste Schritte (32 seiten), Handbuch (41 seiten), Kurzbeschreibung (22 seiten), Handbuch (43 seiten), Anleitung für den Einbau in Schränke für Schiffsantriebsanwendungen (28 seiten), Anwendungshandbuch (34 seiten), Anwendungshandbuch (46 seiten), Betriebsanleitung (22 seiten), Erste Schritte (32 seiten), Betriebsanleitung (21 seiten), Handbuch für die Inbetriebnahme (20 seiten)

1 Engineering SINAMICS S120 Booksize

Engineering SINAMICS S120 Booksize

1.1

1.1.1

A distinction is made between the following line connection versions:

•

Line Modules are directly connected to the line supply

•

Line Modules are connected via an autotransformer

•

Line Modules are connected via an isolation transformer

Danger to life due to electric shock if an isolating transformer is not used

To maintain safe electrical separation, for high voltages, an isolating transformer

must be used.

For voltages higher than > 3 AC 480 V +10 %, install an isolation transformer to

DANGER

bring the voltage into the permissible range of

3 AC 380 V to 3 AC 480 V ±10% (-15% < 1 min).

Fire hazard for the motor due to overload of the insulation

There is higher stress on the motor insulation as a result of a ground fault in an IT

line system or a line system with grounded line conductor.

A possible result is the failure of the insulation with a risk for personnel as a result

of smoke and fire.

WARNING

Engineering manual S120 Booksize

Entry-ID: 109808992,

V1.0,

•

For IT line systems, use a monitoring device that signals an

insulation fault.

•

Correct the fault as quickly as possible in IT systems so the motor

insulation is not overloaded.

•

For line supplies with grounded line conductor, use an isolating

transformer with grounded neutral point (on the secondary side)

between the line supply and the drive system.

04/2022