KAESER KOMPRESSOREN SX, Service Manual, Page: 20 / 122

SX 3 SX 4 SX 6 SX 8
Current drawn [A] 10 13 16 22
Tab. 19 Mains supply 200V/3/50Hz
Rated power supply: 230V±10%/3/50Hz
SX 3 SX 4 SX 6 SX 8
Mains fusing [A] 20 16 20 25
Supply cable [mm
2
] 4x2.5 4x2.5 4x2.5 4x4.0
Current drawn [A] 9 13 16 24
Tab. 20 Mains supply 230V/3/50Hz
Rated power supply: 400V±10%/3/50Hz
SX 3 SX 4 SX 6 SX 8
Mains fusing [A] 16 10 16 16
Supply cable [mm 2 ] 4x2.5 4x1.5 4x2.5 4x2.5
Current drawn [A] 5 6 8 11
Tab. 21 Mains supply 400V/3/50Hz
2.14.1.1 Network conditions
The network conditions apply to machines connected to public mains supplies with the following
characteristics.
■ Frequency: 50 Hz
■ Voltage between exterior and neutral lines 220 V...250 V
■ Voltage between the exterior lines 380 V...440 V
They do not apply to private power supplies within industrial areas isolated from the public mains.
Machines with current consumption >16 A...≤75 A comply fully with IEC 61000–3–12.
The machines listed in table are intended for operation with a public power supply with a network
impedance at the transfer point (house connection) of maximum Z
max
[Ohm].
The operator must ensure that the machines are only connected to a network that meets these re‐
quirements. If necessary, ask the local electricity company for the value of the network impedance.
SX 3 SX 4 SX 6 SX 8
Anticipated number of
start-stop cycles per hour
15 15 15 15
Highest permissible sys‐
tem impedance*
Z
max
[Ohm]
0.16 0.39 0.23 0.18
*Specification related to the sum of impedences in exterior and neutral liner.
Tab. 22 Supply conditions at 400V/3/50Hz
2 Technical Specification
2.14 Power supply specifications
10
Service Manual Screw Compressor
SX SIGMA CONTROL BASIC
9_6919 04 E