KEB COMBIVERT R6 Instruction Manual page 9

Safety Instructions
RCD (Residual
Current Ope-
rated Circuit-
Breaker)
Circuit diagram of low voltage distribution (principle of the protective elements)
Mains
to further
sub-divisions
If personnel protection of the system is required, the COMBIVERT R6-S must be protected
according to EN 61800-5-1:
• • 3-phase inverters (with B6 bridge-connected rectifier) by RCMA's with separation (used
privileged) or RCD's type B (all-current sensitive FI's)
The tripping current should be 300mA or more, in order to avoid a premature triggering by
discharge currents (about 200mA. Dependent on the load, the length of the motor cable
and the use of a radio interference filter, substantially higher leakage current can occur.
The connection instructions from the manufacturer and the valid local reqirements must be
observed.
Dependent on the available mains form (TN, IT, TT) further protective measures are neces-
sary in accordance with VDE Part 410 4 (Part 4; Chapter 41).
For example, with TN-mains this protection is made with overcurrent protective devices,
with IT-mains it is insulation monitoring with a pulse-code measuring method. A protective
separation can be used with all mains forms as long as the required power and cable lengths
permit this.
The person setting up the unit must present proof of compatibility before installing the inver-
ter!
Outlet 1
Outlet 2
Outlet 3
Level 1
Level 2
To further consumers that do not pre-
vent the tripping of the FI.
RCD
type A
sel. T
type type
A A
RCMA/
RCD
type B
Isolator
according to
EN 60947-2
To the consumers not
compatible with FI.
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