Schneider Electric 58 TRX

Altivar® 58 TRX AC Drives

Wiring Recommendations

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 e xcessive capac itance is present, the drive control ler

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. Imme rsion of cable s 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 t erminal locations on

page 18) to the power system ground conductor. Wire size is determined b y the driv e co ntrolle r siz e

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

YES NO

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