Grounding Connections - WEG SSW-08 Manual Del Usuario

Installation and Connection

3.2.6 Grounding Connections

DANGER!
The Soft-Starter must be grounded for safety purposes (PE).
The ground connection must comply with the local regulations. For grounding use
cables with cross sections as indicated in table 3.5. Make the ground connection to
a grounding bar or to the general grounding point (resistance ≤10 ohms).
3
DANGER!
The AC input for the Soft-Starter SSW-08 must have a ground connection.
DANGER!
Do not use the neutral conductor for grounding purpose. Use dedicated ground
conductor.
ATTENTION!
Do not share the ground wiring with other equipment that operate with high current (for
examples: high voltage motors, welding machines, etc.). When several Soft-Starters
SSW-08 are used, observe the connections in the figure 3.8.
internal to the panel
Figure 3.8: Grounding connections for more than one Soft-Starter SSW-08
EMI - Electronic Interference
The Soft-Starter SSW-08 is developed to be used in industrial systems (Class A) according to
Standard EN60947-4-2.
It's necessary to have a distance of 0.25 m (10 in) between the Soft-Starter SSW-08 and the
cables between the Soft-Starter SSW-08 and the motor.
Example: CLP wiring, temperature controllers, thermocouple cables, etc.
Grounding of the Motor frame
Always ground the motor frame. Ground the motor in a panel where the Soft-Starter SSW-08 is
installed. The Soft-Starter SSW-08 output wiring to the motor must be installed separately from
the input wiring as well as from the control and signal wiring.
18 | SSW-08
Grounding bar Grounding bar
internal to the panel