Grounding DGA monitor - OPT100

OPT100 Installation Guide
Document code
M211857EN
Revision
U
Language
English
Product
OPT100
Document type
User guide
  • Grounding cable with 4 … 16‑mm2 (12 … 5 AWG) conductor. Enough to reach from the DGA monitor and the power supply unit to the grounding point(s).
  • Cable stripping tool
  • Crosshead screwdriver
  • Metal file
  • Multimeter
  1. Locate the ground terminals on the underside of the DGA monitor and the power supply unit, and find a good grounding point on the transformer or the surrounding structures.
  2. Clean the grounding point of rust for a good connection.
  3. Ground the DGA monitor:
    1. Run the cable from the ground terminal to the grounding point, and secure it so it does not hang loose.
    2. Connect the cable to the grounding point on the DGA monitor.
      If necessary for good connection, you can replace the grounding connector with your own cable terminal. The bolt is M8 size.
    3. Connect the other end of the cable to the grounding point.
    4. Measure the resistance from the ground terminal to the grounding point to verify the grounding.
  4. Repeat 3 to ground the power supply unit as well.