Lenze EDS4900U-REG - Manual (Page 274)

Accessories
13-4 48XX/49XXSHB0399
13.1.2 Armature fuses
Armature fuses protect the thyristors of the controller from feedback of the motor
in generator mode.
When using AC fuses as armature fuses, the max. operating voltage of the
semi-conductor fuse is restricted, because of the time constant L/R of the
armature circuit.
Therefore, the rated fuse voltage of the following fuse type is considerable higher
than the voltage of the phase fuses recommended.
Type Max. perm. fuse size for the armature circuit (F’4)
Mains voltage $550V +0%
Fuse holder
Fuse type Operating class Order designation Order designation
4902 FF 40 A
(27 x 60) 1 EFSCC0400AYJ EFH30005
4903 FF 50 A
(27 x 60) 1 EFSCC0500AYJ EFH30005
4904 FF 100 A
(27 x 60) 1 EFSCC1000AYJ EFH30005
4905 FF 250 A
(01.110)
aR EFSFF2500AZR EFH10003
4906 FF 315 A
(01.110)
aR EFSFF3150AZR EFH10003
4907 FF 400 A
(02.110)
aR EFSFF4000AZR EFH10003
4X08 FF 550 A
(03.110)
aR EFSFF5500AZR EFH10003
4X09 FF 800 A
(03.110)
aR EFSFF8000AZR EFH10003
TAB 3 Assignment of max. armature fuse size to the controller
1 DC fuse
Type Recommended armature fuse size (F’4) when I
Amax
= I
Arated
of the controller Fuse holder Type Recommended armature fuse size (F 4) when I
Amax
= I
Arated
of the controller
Mains voltage $460V +0%
Fuse holder
Fuse type Operating class Order designation Order designation
4902 FF 20 A
(14 x 51)
aR EFSFF0200AYH EFH10002
4903 FF 32 A
(14 x 51)
aR EFSFF0320AYH EFH10002
4904 FF 80 A
(22 x 58)
aR EFSFF0800AYI EFH30006
4905 FF 125 A
(00.80)
aR EFSFF1250AXL EFZ0003
4906 FF 200 A
(00.80)
aR EFSFF2000AXL EFZ0003
4907 FF 315 A
(00.80)
aR EFSFF3150AXL EFZ0003
4X08 FF 500 A
(02.110)
aR EFSFF5000AZR EFH10003
4X09 FF 700 A
(02.110)
aR EFSFF7000AXP EFH10003
TAB 4 Assignment of armature fuses to the controller when I
Amax
= I
Arated
and at a mains voltage of $ 460V
+ 0%
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