Power Electronics SD700SP Series, Hardware And Installation Manual

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POWER ELECTRONICS SD700SP
POWER CONNECTION
37
EN
AC Protections
Short circuit
SD700SP includes from frame 5 to 8 ultra fast fuses as standard. Frame 5 includes one fuse per phase
with a rated current that depends on the drive’s nominal current. Frames 6 on are constructed through
the parallel connection of frame 5 so the fuses per phase in those frames correspond with the number
of parallel drive modules (frame 5) interconnected.
Therefore, it is not recommended to install the drive in points where the short-circuit current available
is higher than 200kA. If so, install general fuses with a greater breaking capacity and with fastest
overcurrent capacity.
Acquiring frames 1 to 4, the installer must select a protection according to the characteristics mentioned
previously.
Ground fault protection
The drive is equipped with an internal software ground fault protective function to protect the drive
against input and output unbalanced currents. The response threshold can be set from 0% to 30% of
the rated current (G.11.3). For further information, see Programming and Software Manual.
This function is not intended to work as a personnel safety or fire protection, so an external protection
must be provided to ensure that a substantial ground fault current is promptly interrupted. The
SD700SP drives are suitable to operate with RCD components Type B, if it is required. The EMC filters
and long motor cables increase the ground leakage currents so the threshold response of the protection
should be adjusted according to the relevant plant conditions. For additional information, contact with
Power Electronics.
FUSE CHARACTERISTICS
In (A)
Ic @ Un
(A)
I
2
t @
1ms I 2 t
p
(A²s)
I 2 t @ Un
(A²s)
Un (V) Manufacturer Model
200A 200kA 2600 13500 690VAC WESTCODE 069UR1S0250B
250A 200kA 4700 25000 690VAC WESTCODE 069UR1S0250B
350A 200kA 10500 55000 690VAC WESTCODE 069UR1S0350B
400 Vac
FRAME DRIVE
FUSES PER PHASE
(nºx In)
5
SD7SP0210 5 1x350A
SD7SP0250 5 1x350A
SD7SP0275 5 1x350A
6
SD7SP0330 5 2x350A
SD7SP0370 5 2x350A
SD7SP0460 5 2x350A
7
SD7SP0580 5 3x350A
SD7SP0650 5 3x350A
SD7SP0720 5 3x350A
8 SD7SP0840 5 4x350A