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Schneider Electric

ATV21WU55N4 — Variable speed drive

Electrical & controls

Part number: ATV21WU55N4

ATV21WU55N4 — Variable speed drive — Schneider Electric reference ATV21WU55N4. Request a quotation including shipping to your destination. Send equipment details and certificate requirements so we can confirm the exact specification, fitment, availability and warranty terms before ordering.

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Technical specifications

ManufacturerSchneider Electric
Part numberATV21WU55N4
CategoryElectrical & controls
Range of ProductAltivar 21
Product or Component TypeVariable speed drive
power supply voltage380...480 V - 15...10 %
Motor power kW5.5 kW
Maximum Horse Power Rating7.5 hp
Line current10.9 A 380 V 8.6 A 480 V
Speed range1…10
Transient overtorque120 % of nominal motor torque +/- 10 % 60 s
IP degree of protectionIP54 EN 60530 IP54 EN 61800-5-2 IP54 IEC 60529 IP54 IEC 61800-5-1
power supply voltage limits323…528 V
power supply frequency50...60 Hz - 5...5 %
power supply frequency limits47.5…63 Hz
Apparent power9.1 kVA 380 V
maximum continuous output current12 A 380 V 12 A 460 V
Maximum transient current13.2 A 60 s
Speed drive output frequency0.5…200 Hz
Nominal switching frequency12 kHz
Switching frequency12...16 kHz with derating factor 6...16 kHz adjustable
Speed accuracy+/- 10 % of nominal slip 0.2 Tn to Tn
Torque accuracy+/- 15 %
Output voltage<= power supply voltage
recommended type of cable for mounting in an enclosureWith UL Type 1 kit 3 UL 508 cable 104 °F (40 °C), copper 75 °C / PVC Without mounting kit 1 IEC cable 113 °F (45 °C), copper 70 °C / PVC Without mounting kit 1 IEC cable 113 °F (45 °C), copper 90 °C / XLPE/EPR
Electrical connectionL1/R, L2/S, L3/T terminal 0.009 in² (6 mm²) / AWG 10 VIA, VIB, FM, FLA, FLB, FLC, RY, RC, F, R, RES terminal 0.004 in² (2.5 mm²) / AWG 14
Tightening torque11.5 lbf.in (1.3 N.m), 11.5 lb.in L1/R, L2/S, L3/T) 5.3 lbf.in (0.6 N.m) VIA, VIB, FM, FLA, FLB, FLC, RY, RC, F, R, RES)
SupplyInternal supply 24 V DC 21…27 V), <200 mA overload and short-circuit protection Internal supply for reference potentiometer (1 to 10 kOhm) 10.5 V DC +/- 5 %, <10 mA overload and short-circuit protection
Analogue input number2
Analogue input typeVIA switch-configurable current 0...20 mA 242 Ohm 11 bits VIA switch-configurable voltage 0...10 V DC 24 V max 30000 Ohm 11 bits VIB configurable PTC probe 0...6 probes 1500 Ohm VIB configurable voltage 0...10 V DC 24 V max 30000 Ohm 11 bits
Analogue output number1
Published component typeVariable speed drive
Reference statusPublished part reference; specification and fitment require confirmation
AvailabilityOn request

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