Mercury-free gas protection relays

The gas protection relay is the most important safety devices for oil-insulated transformers. In the event of overheating, corona discharge or arcing, gas is formed through decomposition of the insulation oil or the solid insulation materials. The gas is then captured in the gas protection relay and initially produces a warning signal. In the event of serious faults or major oil flow, the gas protection relay trips and the transformer is removed from service.

Our gas protection relays have aluminium alloy casings, surface-treated with epoxy lacquer RAL7030. They are equipped with glass inspection windows on both sides. Protection class IP55 with 2 magnetic N/O (normally open) contacts designated -MA. Can be ordered in other configurations (N/C, changeover, etc.) and a test certificate accompanies each gas protection relay.

We have mercury-free replacements for most older gas protection relays; see the table.

Art.no Description D1 Substitute prod. Substitute type Length Flange diam Hole spacing Num. hole Drawing Picture
3018 6020-EU026 EU026 25 T0 190 115 75-85 4 Adobe_PDF_file_icon_32x32
3018 6022ET ET025 25 T1-MA 190 100 75 4 Adobe_PDF_file_icon_32x32
3018 6024 T2 50 185 140 110 4 Adobe_PDF_file_icon_32x32
3018 6025 T3 75 185 180 150 4 Adobe_PDF_file_icon_32x32
3018 6026/TVGC3 T3-TVGC3 75 ASEA TVGC 3 250 190 160 6 Adobe_PDF_file_icon_32x32
3018 6030 BG25 25 Comem/RH TG1V+H 185 G 1 1/2 Adobe_PDF_file_icon_32x32
3018 6031 EB24 25 190 G 1 1/2 Adobe_PDF_file_icon_32x32
3018 6040 EE1 25 ASEA TVGB 1 127 4x 76 72 4 Adobe_PDF_file_icon_32x32
3018 6045 EE2 21 ASEA TVGC 2 185 140 110 6 Adobe_PDF_file_icon_32x32
3018 6048 EE3 76 185 160 130 6 Adobe_PDF_file_icon_32x32
3018 6050-S EB025 25 BR25 185 115 85 4 Adobe_PDF_file_icon_32x32
3018 6055-EB EB050 50 BR50 267 165 125 4 Adobe_PDF_file_icon_32x32
3018 6058-4-EB EB079-MA/4 80 BR80-MA/4 303 200 160 4 Adobe_PDF_file_icon_32x32
3018 6058-EB EB080-MA/8 80 BR80-MA/8 303 200 160 8 Adobe_PDF_file_icon_32x32