Siemens SINAMICS G115D

Additional requirements placed on the protective conductor ①:
• For permanent connection, the protective conductor must ful󹪝ll at least one of the following
conditions:
– The protective conductor is routed so that it is protected against damage along its
complete length.
(Cables routed inside control cabinets or enclosed machine housings are considered to be
adequately protected against mechanical damage.)
– As a conductor of a multi-conductor cable, the protective conductor has a cross-section ≥
2.5mm² Cu.
– For an individual conductor, the protective conductor has a cross-section ≥ 10mm² Cu.
– The protective conductor consists of two individual conductors with the same cross-
section.
• 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.
5.4 Requirements for branch circuit protection
Requirements for UL-compliant installation
The integral solid-state short-circuit protection does not provide branch circuit protection.
Branch circuit protection must be provided in accordance with the National Electrical Code and
any additional local codes.
5.5 Operation with residual current protective device (RCD)
WARNING
Fire or electric shock due to unsuitable residual-current protective devices
The converter may create a current through the protective conductor. The current through the
protective conductor can cause the residual current device (RCD) or residual current monitor
(RCM) to incorrectly trip (nuisance trip). In the case of a ground fault, the fault current can
contain a DC component, which prevents the RCD or RCM from tripping, with the risk of
subsequent 󹪝re or electric shock.
• Use the protection and monitoring devices recommended in the documentation.
Protection and monitoring equipment
To provide protection against short-circuit, use the recommended overcurrent protective
devices (fuses, circuit breakers etc.).
Branch protection and short-circuit strength according to UL and IEC (https://
support.industry.siemens.com/cs/ww/en/ps/27867)
Wiring
5.5Operation with residual current protective device (RCD)
SINAMICS G115D Wall Mounted distributed drive
58 Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA