nord NORDAC PRO SK 511E Series - Page 182

SK 54xE – Users Manual for Frequency Inverters
182 BU 0505 EN-3021
Frequency inverter type SK 5xxE… -301-340- -401-340- -551-340- -751-340-
Size 3 3 4 4
Nominal motor power
(4-pole standard motor)
400 V
3.0 kW 4.0 kW 5.5 kW 7.5 kW
480 V 4 hp 5 hp 7½ hp 10 hp
Mains voltage
400 V
3 AC 380 … 480V, -20% / +10%, 47 … 63 Hz
Input current
rms
10.5 A 13.3 A 17.5 A 22.4 A
FLA 10.5 A 13.3 A 17.5 A 22.4 A
Output voltage
400 V
3 AC 0 - Mains voltage
Typical output
rms
7.5 A 9.5 A 12.5 A 16 A
FLA 6.7 A 8.5 A 11 A 14 A
Min. brake resistor Accessories
91 Ω 74 Ω 60 Ω 44 Ω
Pulse frequency
range
3 – 16 kHz
Factory setting 6 kHz
Ambient temperature S1 40 °C. 40 °C. 40 °C. 40 °C.
S3 80 %, 10 min - - 50 °C. 50 °C.
S3 70 %, 10 min 50 °C. 50 °C. 50 °C. 50 °C.
Type of ventilation
Fan cooling, temperature-controlled
switching thresholds:
1)
ON= 57°C OFF=47°C
Weight Approx. [kg] 2.7 3.1
General fuses (AC) (recommended)
slow-blowing 16 A 16 A 20 A 25 A
Isc
2)
[A]
UL fuses (AC) – permitted
Class
5 000
10 000
100 000
Fuse
J (600 V) x 12 A 15 A 20 A 25 A
CC, J, R, T, G, L (600 V) x 25 A 30 A 30 A 30 A
Bussmann LPJ-
x
12SP 15SP 20SP 25SP
CB
(480 V) x 25 A 25 A 25 A 25 A
1) Brief test run after application of the mains voltage (for SK 5x5 inverters after application of the control voltage)
2) Maximum permissible mains overload current