Siemens S120 Manual page 78

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Mains connection and line-side power components

3.9 Line connection variants

Damage of the drive line-up when operating on an IT line system without motor reactor

If the drive unit is operated without motor reactor on an IT line system, a ground fault on the

motor side of the Power Modules can cause damage to the drive line-up or trigger the

overcurrent protective equipment.

• Always operate the Power Modules on IT line system with motor reactors.

Manual, (GH6), 04/2014, 6SL3097-4AL00-0BP4