Protective measure "automatic disconnection of supply" of drive controllers

Frage:

Which Lenze products provide overcurrent or short-circuit protection according to IEC/HD 60364-4-41 (DIN VDE 0100-410) for the output circuits ?

Answer:

Prerequisites for fault protection according to IEC/HD 60364-4-41 (DIN VDE 0100-410) for the output circuits of the devices i7x0; i9x0; 9400 are:

Installation in TN network and TT network

The inverters are installed according to the specifications in the documentation.
The system complies with the requirements of the applicable standards of the series IEC/HD 60364 (DIN VDE 0100).
The continuity of all associated PE and equipotential bonding conductors is ensured, including the connection and connection points.
Additional in the TT network:

The use of RCDs or additional protective grounding according to IEC60361-4-41 Section 415 is required.

Under these conditions, the mentioned inverters meet the protective measure "automatic disconnection of the supply" according to IEC/HD 60364-4-41 (DIN VDE 0100-410) Section 411.3.2.5 for the outputs U,V,W of the mentioned devices. I.e. in case of a short circuit with negligible impedance to a protective conductor or to earth, the inverters reduce the output voltage within the limits specified in Table 41.1 of IEC/HD 60364-4-41 (DIN VDE 0100-410) required time.

For the outputs +UG/-UG and Rb1/Rb2 applies:

lines for the DC link wiring (+UG/-UG) and for connecting the braking resistors Rb1/Rb2 must be selected in such a way that in the event of a fault (short-circuit, ground fault) upstream fuses interrupt the power supply or due to a short-circuit-proof wiring according to DIN VDE 0100-520:2013-06 a short-circuit or ground fault can be excluded. ground fault can be excluded.

[Automatic Translation]

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