Hitachi MICRO-EHV+ Applications Manual page 162

Chapter 4 Installation
(8) Wiring to the unit terminal
Shielded insulation
transformer
AC Power
Always connect a noise
filter
Ground wiring
2
Use a cable 2mm
2
(0.0031 in .) or more and
wire it within a distance
of 20m (65.62 ft.).
Class D grounding
Wiring for the power supply
2 2
Use a 2mm (0.031in .) cable and twist it.
Leave a distance of 100 mm (3.94 in.) or more from
the signal cable and 200mm (7.87 in.) or more from
the power line.
NF
Figure 4.7 Example of wiring
Metal plate
Implement class D grounding.
4 – 8
Expansion cable
Always segregate power
line. I/O signal and power
supply cable.
I/O signal cable
2
Use cable 0.75mm (0.0011
2
in .) or less.
Leave a distance of 200 mm
(7.87in.) or more from the
power line and do not have it
running next to the power
cable.
Outer hull (cabinet)
Implement class D grounding.