Electrical Installation - Siemens SINAMICS G110M Operating Instructions Manual

Installation

4.3 Electrical Installation

Dimensioning the protective conductor
Observe the local regulations for protective conductors subject to an increased leakage
current at the installation site.
①
②
③
The minimum cross-section of the protective conductor
section of the line feeder cable:
● Line feeder cable ≤ 16 mm
⇒ Minimum cross-section of the protective conductor = cross-section of the line feeder
cable
● 16 mm² < line feeder cable ≤ 35 mm
⇒ Minimum cross-section of the protective conductor = 16 mm
● Line feeder cable > 35 mm
⇒ Minimum cross-section of the protective conductor = ½ cross-section of the line feeder
cable
Additional requirements placed on the protective conductor
● For permanent connection, the protective conductor must fulfill at least one of the
following conditions:
– The protective conductor is routed so that it is protected against damage along its
– As a conductor of a multi-conductor cable, the protective conductor has a cross-
– For an individual conductor, the protective conductor has a cross-section ≥ 10 mm²
– The protective conductor consists of two individual conductors with the same cross-
● When connecting a multi-conductor cable using an industrial plug connector according to
EN 60309, the protective conductor must have a cross-section of ≥ 2.5 mm² Cu.
64
Protective conductor for line feeder cables
Protective conductor for inverter line feeder cables
Protective conductor between PE and the electrical cabinet
complete length.
(Cables routed inside electrical cabinets or enclosed machine housings are
considered to be adequately protected against mechanical damage.)
section ≥ 2.5 mm² Cu.
Cu.
section.
2
2
2
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 06/2016, FW V4.7.6, A5E31298649B AG
① ③
... depends on the cross-
2
①
: