Electrical Installation; Protection Of Persons; Residual-Current Circuit Breakers - Lenze 9300 Operating Instructions Manual

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4.2
4.2.1
4.2.1.1
Definition
Protection of persons and animals
Rated residual current
Installation
Standards
(All-current sentitive RCCB)

Electrical installation

For information about the installation according to EMC, see chapter 4.3.

Protection of persons

Danger!
All power terminals carry voltage up to 3 minutes after mains disconnection.

Residual-current circuit breakers

Labelling of RCCBs
In the following text "RCCB" is used for "residual-current circuit breaker".
DIN VDE 0100 with residual-current operated protective devices (RCCB):
•
The controllers are equipped with a mains rectifier. If a short-circuit to frame occurs, a smooth DC residual current
can block the activation of the DC sensitive or pulse-current sensitive RCCBs and thus destroy the protective
function for all units connected. We therefore recommend:
– "pulse-current sensitive RCCB" or "all-current RCCB" in systems equipped with controllers with single-phase
mains connection (L1/N).
– "all-current sensitive RCCB" in systems equipped with controllers with three-phase mains connection (L1/L2/L3).
Please observe the rated residual current for the selection of the RCCB:
•
Controller with single-phase mains connection:
•
Controller with three-phase mains connection:
The RCCB can be activated unintentionally under the following conditions:
•
In the event of capacitive leakage currents between the cable screens (especially with wall mounting).
•
Simultaneous connection of several inverters to the mains
•
If RFI filters are used.
The RCCB must only be installed between the supplying mains and the controller.
All-current sensitive RCCBs are described in the European Standard EN EN 50178 and in the IEC 755.
The EN 50178 has been harmonized and has been effective since October 1997. It replaces the national standard
VDE 0160.
Meaning
AC-sensitive residual-current circuit breaker (RCCB, type AC)
Pulse-current sensitive residual-current circuit breaker (RCCB, type A)
All-current sensitive residual-current circuit breaker (RCCB, type B)
30 mA rated residual current
300 mA rated residual current
BA9300POS EN 2.3
Installation
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