Lenze EDS4900U-REG - Manual (Page 40)

Installation
4-2 48XX/49XXSHB0399
4.2 Electrical installation
For information on the installation according to EMC, see chapter 4.4
4.2.1 Protection of persons
( Protection of persons and animals according to DIN VDE 0100 with
current-operated protective devices:
The inverters are equipped with a mains rectifier. After a short-circuit to
frame, a DC fault current may prevent the tripping of the current-operated
protective device. Additional measures, such as protective multiple earthing
or universal current sensitive current-operated e.l.c.b., should therefore be
taken.
( When dimensioning the tripping current of the current-operated e.l.c.b. it
must be observed that false tripping may occur under the following
conditions:
- In the event of capacitive leakage currents between the cable screens
(especially with long screened motor cables).
- If several controllers are connected to the mains at the same time.
- If you use RFI filters.
( Comment on the application of universal-current sensitive current-operated
e.l.c.b.:
The preliminary standard prEN50178 (previously VDE0160) on the
application of universal-current sensitive current-operated e.l.c.b. has
passed the German Committee K226.
The final decision about this standard will be made by CENELEC/CS
(European Committee for Electrotechnical Standardization) in Brussels. For
further information on the application of universal-current sensitive
current-operated e.l.c.b., can be obtained from the supplier.
( Replace defective fuses with the prescribed type only when no voltage is
applied. The fuses protect the controller from impermissible operating
conditions. After tripping, the controller or the system should be checked for
possible faults or errors before replacing the fuse.
( The controller can be safely disconnected from the mains via a contactor on
the input side.
Electrical isolation
There is an electrical isolation (insulating distance) between power and control
terminals:
( The reference potential GND of the control electronics is connected to PE
via a bridge (bridge to X4; term. 90
“ term. FE)
( The control electronics has a basic isolation (single insulating distance).
( The protection against contact, if the insulating distance is defective, can
only be ensured by additional measures.
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