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6.3.4 During Connection
• Do not pull the cables hard during connection.
• Make sure there is enough wire bending space for all connection cables.
• Take proper methods to reduce the stress of cables.
• Check carefully to ensure the correctness and fastness of the connections.
6.4 Cable Connection
External cable connections of the MV Station include grounding connection, cable
connection on LV side, cable connection on MV side, communication connection, and
auxiliary power supply connection.
6.4.1 Ground Connection
Brief Introduction
Generally, the ground connection includes equipotential connection of internal devices and
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 the MV Station, i.e. 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 grounding copper bar has been
finished before delivery.
External Grounding
For ease of onsite cable connection, two grounding points are designed at the exterior of the
MV Station, as shown in the figure below.
6 Electrical Installation System Manual
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