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Altivar
®
58 TRX AC Drives
Wiring Recommendations
© 2000–2003 Schneider Electric All Rights Reserved
106
09/2003
Ratings for Input Line Currents, Type N 400 to 460 Vac
Three-Phase Input with Three-Phase Output
Output Wiring Precautions
The drive controller is sensitive to the amount of capacitance (either phase-to-phase or phase-to-
ground) present on the output power conductors. If excessive capacitance is present, the drive controller
may trip on overcurrent.
Follow the guidelines below when selecting output cable:
• Cable type: the cable selected must have a low capacitance phase-to-phase and to ground. Do not
use mineral-impregnated cable because it has a very high capacitance. Immersion of cables in water
increases capacitance.
• Cable length: the longer the cable, the greater the capacitance. Cable lengths greater than 100 ft
(30.5 m) may affect controller and/or motor performance. For installations where cable length
capacitances may be a problem, installing a reactor between the drive controller and the motor will
increase inductance and decrease capacitance between cable conductors.
• Proximity to other output cables: because of high frequency switching and increased capacitance,
the drive controller may fault under some conditions.
• Do not use lightning arrestors and/or power factor correction capacitors on the output of the
drive controller.
NOTE: Provide at least 20 in. (500 mm) of cable at the drive controller output (U, V, W).
Grounding
For safe, dependable operation, ground the drive controller according to National Electrical Code and
all local codes. To ground the drive controller:
• Connect a copper wire from the ground terminal on the drive controller (see the terminal locations on
page 18) to the power system ground conductor. Wire size is determined by the drive controller size
and by national and local codes.
• Verify that resistance to ground is one ohm or less. Improper grounding causes intermittent and
unreliable operation.
.
Drive Controller Catalog Number
Dissipated Power at Rated
Load (Total)
Short Circuit Rating Input Line Current
WA RMS sym.AA
ATV58NU18N4• 57 5,000 3.4 2.6
ATV58NU29N4• 97 5,000 6 4.5
ATV58NU41N4• 120 5,000 7.8 6
ATV58NU54N4• 170 5,000 10.2 7.8
ATV58NU72N4• 210 5,000 13 10.1
ATV58NU90N4• 295 5,000 17 13.2
ATV58ND12N4• 360 22,000 26.5 21
Drive Controller
Drive Controller
Drive Controller
Drive Controller
Drive Controller
Drive Controller
YES
NO
Drive Controller
Drive Controller
Drive Controller
Ground multiple drive controllers as
shown in the figure to the left. Use one
grounding conductor per device. Do not
loop ground conductors or install them in
series