33
table 6-1 Ports in the figure above
No.
Name
A
DC input
B
AC output
C
External communication port
D*
External 3-pahse power supply
6.3.2 Cable Specifications
Choose cables according to the rules below:
•
All the cables must have sufficient ampacity. The ampacity of the conductor can at least
be influenced by environmental conditions, conductor insulation materials, laying, wire
materials, cross-sectional areas, etc.
•
All the cables must be chosen according to the maximum current of the inverter.
•
Cables for one polarity or phase should be of the same type and specification.
•
Flame retardant and fire resistant cables are recommended.
Overloading operation of cables is strictly forbidden.
6.4
Ground Connection
Brief Introduction
Observe the country-specific regulations and standards at all times!
Generally, the ground connection can be divided into two parts, equipotential connection of
MV Station internal devices and MV Station external grounding.
Equipotential Connection of MV Station Internal Devices
All electrical devices inside the MV Station should be connected equipotentially through the
total equipotential connection copper bar inside intelligent PMD. The grounding terminal of
all the main electrical devices should connect to the total equipotential connection copper
bar.
The connection of the internal main electrical devices to the ground copper bar has been
finished before delivery.
On site, if grounding connection is required, the 16mm
2
cable is recommended.
System Manual
