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Electrical Requirements; Wiring The Power Connector; Preventative Maintenance - HEIDENHAIN ND 780 Handbuch

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Electrical requirements

Voltage AC 100 V ... 240 V (±10 %)
Power max.135 W
Frequency 50 Hz ... 60 Hz (±3 Hz)
Fuse T 630 mA / 250 V, 5 mm x 20 mm, Slo-Blo (line, and neutral
fused)
Environmental
Protection (EN 60529) IP 40 back panel
IP 54 front panel
Operating temperature 0° to 45°C (32° to 113°F)
Storage temperature -20° to 70°C (-4° to 158°F)
Mechanical weight 2.6 kg (5.8 lb.)

Wiring the power connector,

Hot leads: L, and N
Ground:
Minimum diameter of power connection cable: 0.75 mm
Protective earthing (grounding)
It is necessary to connect the protective conductor terminal
on the rear panel to the star point of machine ground.
Minimum cross-section of the connecting wire: 6 mm

Preventative maintenance

No special preventative maintenance is necessary. For cleaning, wipe
lightly with a dry lint-free cloth.
ND 780
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