LEROY-SOMER
4946 - 2013.07 / a
POWERDRIVE MD2CS
23
U
W
V
PE
PE
PE
en
InstallatIon and maIntenance
Chassis-mounted variable speed drive
connectIons
POWERDRIVE
rating
Mains power supply
Motor
525 V
690 V
I
L
(A)
Fuses (1)
Cable
cross-section
(mm²)
(3)
I
L
(A)
Fuses (1)
Cable
cross-section
(mm²)
(3)
Ico
(A)
Cable
cross-section
(mm²)
(4)
Gg
type
(1)
aR type
(IEC&UL)
(2)
Gg
type
(1)
aR type
(IEC&UL) (2)
270TH
250
315
450
3x120 + 70
265
315
450
3x120 + 70
280
3x150 + 70
340TH
305
400
550
3x150 + 70
320
400
550
3x150 + 70
340
3x240 +120
400TH
370
400
700
3x240 +120
390
400
700
3x240 +120
415
2x(3x120+70)
500TH
445
500
800
3x240 +120
470
500
800
3x240 +120
500
2x(3x150+95)
note: the line current value
I
L
is a typical value which depends on the source impedance.
(1) gG fuse or equivalent solution (fuses connected in parallel, preferably c type circuit-breaker, etc). this protection must always
be connected in series with aR semi-conductor fuses.
(2) semiconductor aR fuses do not ensure the protection of the drive power supply line and must always be associated with a
protection device against overload, localized at the head of the line.
(3) the recommended mains cable cross-sections have been determined for single-core cable with a maximum
length of 20 m. For longer cables, take line voltage drops into consideration due to large cable length.
(4) the motor cable cross-sections are given for information only for a current corresponding to the value of the
Ico current at 3 kHz, a maximum length of 50 m, output frequency less than 100 Hz and an ambient temperature of
40°c.
The recommended motor cables are shielded multicore type
(see section 4.5.2). the values supplied
are typical values.
example: cable cross-section of 3 x (3 x 185 + 95) corresponds to 3 cables each consisting of 3 phase conductors
(cross-section 185 mm²) + earth conductors (cross-section 95 mm²).