2.12 Power Supply
Basic requirements
The machine is designed for a power supply conforming to EN 60204–1 (IEC 60204–1), section 4.3.
In the absence of other user-specified conditions, the limits laid down in this standard must be adhered
to.
It is recommended that the supplier and user confer and agree on the basis of the EN 60204–1,
Annex B.
2.12.1 Three-phase power supply
The machine requires a symmetrical three-phase power supply.
In a symmetrical three-phase supply the phase angles and voltages are all the same.
This machine may only be supplied from an earthed TN or TT three-phase supply in which the neutral
point is earthed.
Connection to an IT supply is not permitted without taking further measures (earth leak detection,
etc.).
Further information When connecting to a European 400 V/3/50 Hz power supply the requirements in chapter 2.13 are
also to be observed.
See electrical diagram in 13.3.
2.12.1.1 Power supply specifications
The following conductor cross-sections (copper multicore) and fusing (industrial fuses, slow blow) are
given according to VDE 0100, parts 430 and 523 (IEC 60364–4–43) for ambient temperatures from
30 °C and laying method C.
➤ For other application conditions, check conductor diameters and change accordingly.
➤ Cables laid side-by-side must be separated by a distance equal to one cable diameter.
Other conditions would include, for example:
■ Higher temperature
■ Other cable installation method
■ Cable length >50 m
Mains frequency: 50 Hz
Rated voltage: 230V±10%/3/50Hz
Model Backup fuse [A]
Supply cable [mm
2
]
Current input [A]
EPC 750–2–500 16 4 x 2.5 12.0
EPC 1000–2–500 25 4 x 4 18.0
Tab. 17 Supply details 230V/3/50Hz
Rated voltage: 400V±10%/3/50Hz
Model Backup fuse [A]
Supply cable [mm
2
]
Current input [A]
EPC 750–2–500 16 4 x 2.5 12.0
2 Technical Specification
2.12 Power Supply
8
Service Manual 2-stage piston compressor
EPC No.: 9_9431_02 E
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