Potential Equalization - Special Function - GEM 4242 Operating Instructions Manual

Combi switchbox with integrated pilot valve

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11.2 Potential equalization – Special function X

The potential equalization can be established using the following methods:

- Pre-assembled earthing kit for the on-site wiring of the earth via a stranded wire, yellow/green H07 V-K 4.0

- Conductive connection via the mechanically coupled valve fitting to the system earth

Connecting the potential equalization device

1. Use a screw M4x6 to attach the potential equalization device to the electrical position indicator.

ð Potential equalization for metal housings in potentially explosive areas: Minimum 4 mm².

2. Secure the connection against working itself loose.

The potential equalization connection's maximum permissible resistance limit value is defined as R ≤ 100 Ω. During the plant-

specific maintenance cycle, the potential equalization connection must be checked to ensure that it has been connected cor-

rectly and that the maximum resistance limit value has not been exceeded.

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11 Electrical connection

GEMÜ 4242

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