Public low voltage networks. Symmetrically grounded TN-S
system, IT (ungrounded), corner-grounded delta, midpoint-
grounded delta and TT systems, see sections:
Network type
IEC: When to disconnect EMC filter or ground-to-phase varistor:
TN-S, IT, corner-grounded delta and midpoint-grounded delta
systems (page 116) and Guidelines for installing the drive to a
TT system (page 117).
North America: When to connect EMC filter or disconnect
ground-to-phase varistor: TN-S, IT, corner-grounded delta and
midpoint-grounded delta systems (page 166) and Guidelines for
installing the drive to a TT system (page 168).
Note: Frames R4 and R5 cannot be used in corner-grounded
or midpoint-grounded delta systems.
65 kA when protected by fuses given in the fuse tablesRated conditional short-circuit
current (IEC 61800-5-1)
US and Canada: The drive is suitable for use on a circuit cap-
able of delivering not more than 100 kA symmetrical amperes
(rms) at 480 V maximum when protected by fuses given in the
fuse table.
Short-circuit current protection
(UL 61800-5-1)
US and Canada: The drive is suitable for use on a circuit cap-
able of delivering not more than 65 kA symmetrical amperes
(RMS) maximum when protected by circuit breakers given in
the circuit breaker table.
47 to 63 Hz. This is indicated in the type designation label as
typical input frequency level f1 (50/60 Hz).
Frequency (f
1
)
Max. ± 3% of nominal phase to phase input voltageImbalance
0.98 (at nominal load)Fundamental power factor
(cos phi
1
)
Technical data 287
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