nord NORDAC PRO SK 511E Series - Page 184

SK 54xE – Users Manual for Frequency Inverters
184 BU 0505 EN-3021
Frequency inverter type SK 5xxE… -302-340- -372-340- -452-340- -552-340- -752-340-
Size 7 7 8 8 9
Nominal motor power
(4-pole standard motor)
400 V
30.0 kW 37.0 kW 45.0 kW 55.0 kW 75.0 kW
480 V 40 hp 50 hp 60 hp 75 hp 100 hp
Mains voltage
400 V
3 AC 380 … 480V, -20% / +10%, 47 … 63 Hz
Input current
rms
84 A 105 A 126 A 154 A 210 A
FLA 64.1 A 80 A 108 A 134 A 174 A
Output voltage
400 V
3 AC 0 - Mains voltage
Typical output
rms
60 A 75 A 90 A 110 A 150 A
FLA 52 A 68 A 77 A 96 A 124 A
Min. brake resistor Accessories
9 Ω 9 Ω 8 Ω 8 Ω 6 Ω
Pulse frequency
range
3 – 16 kHz 3 – 8 kHz
Factory setting 6 kHz 4 kHz
Ambient temperature S1 40 °C. 40 °C. 40 °C. 40 °C. 40 °C.
S3 80 %, 10 min - - - - -
S3 70 %, 10 min - - - - -
Type of ventilation
Fan cooling, temperature-controlled
switching thresholds:
1)
ON= 57°C OFF=47°C ON= 56°C OFF=52°C
Fan speed control between 47°C (52°C) and approx. 70°C
2)
Weight Approx. [kg] 16 20 25
General fuses (AC) (recommended)
slow-blowing 100 A 125 A 160 A 160 A 224 A
Isc
3)
[A]
UL fuses (AC) – permitted
Class
10 000
65 000
100 000
Fuse
RK5 (480 V) x - - 125 A 150 A 200 A
CC, J, R, T, G, L (600 V) x 100 A 100 A 125 A 150 A 200 A
- - - - -
CB
(480 V) x x - - 125 A 150 A 200 A
(480 V) x 100 A 100 A - - -
1) Short test run after connection of the mains voltage or control voltage
2) In case of overload of the frequency inverter, the speed of the fan is increased to 100% regardless of the actual temperature of the device.
3) Maximum permissible mains overload current