Grounding Resistance - AWS310 - RWCC - RWS200 - FOC201 - AWS310-SITE - RME111 - AWS430

Grounding and Lightning Protection in Vaisala Outdoor Installations Technical Reference

Document code
M211786EN
Revision
B
Language
English (United States)
Product
AWS310
RWCC
RWS200
FOC201
AWS310-SITE
RME111
AWS430
Document type
User guide

The key parameter in protective grounding is to maintain a low grounding resistance value all year round. Low grounding resistance ensures as low as possible touch voltages in fault conditions.

A preferable target value for low resistance safety grounding is below 10 Ω. In some soil types, this is challenging and expensive to achieve.