Installation
Electrical installation
4.2.1 Protection of persons
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L
EDSVS9332S-B EN 3.0
4.2 Electrical installation
For information about the installation according to EMC, see chapter 4.3.
4.2.1 Protection of persons
Danger!
All power terminals carry voltage for up to 3 minutes after mains disconnection.
4.2.1.1 Residual-current circuit breakers
Labelling of RCCBs 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)
Definition In the following text “RCCB” is used for “residual-current circuit breaker”.
Protection of persons and
animals
DIN VDE 0100 with residual-current operated protective devices (RCCB):
• The controllers are internally fitted with a mains rectifier. In case of a short circuit to frame a smooth
d.c. fault current can prevent the AC-current-sensitive or pulse-current sensitive residual-current circuit
breakers from being activated, thus cancelling the protective function for the entire equipment being
operated at this residual-current circuit breaker. Therefore, we recommend:
– ”pulse-current sensitive RCCBs” or ”all-current RCCBs” in systems equipped with controllers with
single-phase mains connection (L1/N).
– ”all-current sensitive RCCBs” in systems equipped with controllers with three-phase mains
connection (L1/L2/L3).
Rated residual current Please observe the rated residual current for the selection of the RCCB:
• Controller with single-phase mains connection: 30 mA rated residual current
• Controller with three-phase mains connection: 300 mA rated residual current
The RCCB can be activated unintentionally under the following conditions:
• In the event of operational capacitive leakage currents between the cable shields (especially with wall
mounting).
• Simultaneous connection of several inverters to the mains.
• If RFI filters are used.
Installation The RCCB must only be installed between the supplying mains and the controller.
Standards
(All-current sensitive RCCB)
All-current sensitive RCCBs are described in the European Standard EN 50178 and in the IEC 755.
The EN 50178 was harmonised and has been effective since October 1997. It replaces the National
Standard VDE 0160.
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