Protecting Signal Lines - RME111 - RWS200 - AWS310-SITE - AWS430 - RWCC - AWS310 - FOC201

Grounding and Lightning Protection in Vaisala Outdoor Installations Technical Reference

Document code
M211786EN
Revision
B
Language
English (United States)
Product
RME111
RWS200
AWS310-SITE
AWS430
RWCC
AWS310
FOC201
Document type
User guide
Protect signal lines using two-stage protection with a resistor in-between.
  1. At the line end, install a 10 kA capable gas discharge tube (GDT) to system ground.
  2. Install a series impedance.
  3. Install a 600 W or 1.5 kW transient voltage suppression (TVS) diodes from line to line and from all lines to signal ground.
  4. For best protection, select the TVS diode voltage to be as low as the used signal permits.
    Figure 1. Signal Line Protection