6
Electrical installation
Installation instructions
Operating Instructions – Explosion-Protected MOVI-SWITCH
®
Drives
28
6.2.6
Improving the grounding (EMC), HF grounding
For improved, low-impedance grounding at high frequencies, we recommend using
the following connections with corrosion protected connection elements:
HF grounding is not installed as standard.
The HF grounding option can be combined with LF grounding at the terminal box.
If you require LF grounding in addition to HF grounding, you can connect the con-
ductor to the same point.
The HF grounding option can be ordered as follows:
•
Completely pre-assembled at the factory
•
As "grounding terminal" kit for customer installation; part numbers listed in the fol-
lowing table.
Motor
Part number of "Grounding termi-
nal" kit
EDRE 100L – 132, EDRN100L – 132S
13633945
INFORMATION
If 2 or more ground straps are used, you have to attach them with a longer screw.
The specified tightening torques refer to a strap thickness of t ≤ 3 mm.
EDRE100L – 132, EDRN100L – 132S motors with HF (+LF) grounding
[1]
[2]
[4]
[3]
[5]
[3]
18014402064551947
[1]
Use of tapped hole for lifting eyes
[4]
Ground strap (not included in the deliv-
ery)
[2]
Serrated lock washer DIN 6798
[5]
Hex head screw ISO 4017 M8 × 18,
tightening torque 10 Nm
[3]
Washer ISO 7089/ISO 7090
6.2.7
Equipotential bonding
In accordance with EN 60079-14, connection may have to be made to an equipotential
bonding system.
25988670/EN – 04/2020
