DKR Drive Controllers
Planning the electrical connections
6-13
DOK-DIAX03-DKR********-PR02-EN-P
Overvoltage suppressor
The drive may only be operated with ungrounded three-phase systems --
in addition to an isolating transformer -- if the machine or plant is
protected by overvoltage suppressors.
The recommended overvoltage suppressors protect up to leakage
currents equal to I²t = 750 A²s (30 s with 5 A).
For thermal reasons, higher leakage currents trigger the signal contact.
The overvoltage suppressors are, as a result, defective and must then be
replaced.
o
Type of drive controller
Fuse F3, Type
Overvoltage
suppressor F2, Type
DKR03.1-100-...
-
DKR03.1-200-...
-
DKR02.1-200-...
-
DKR02.1-300-...
e. g. DEHNguard
,
manufactured by
DEHN + SÖHNE
D-92306 Neumarkt
Tel: +49 (0)9181/906-0
DKR04.1-300-...
-
DKR04.1-400-...
3
*
100Agl
-
Fig. 6-14:
Types of fuses and overvoltage suppressors
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01
