MR MESSKO MSAFE, Руководство по эксплуатации

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6 Commissioning
36 7232312/00 EN
6.3 Function tests
WARNING
Danger of explosion and danger of poisoning!
Explosive gases in the Buchholz relay can deflagrate or ex-
plode and result in death or severe injuries. Inhaling the gases
released can lead to poisoning or suffocation.
► Ensure that there are no ignition sources such as naked flames, hot sur-
faces or sparks (e.g. caused by the build-up of static charge, electrical
devices) in the immediate surroundings and that none occur.
► Do not breath in any gas released.
6.3.1 Loss of insulating fluid
This test simulates the loss of insulating fluid.
Test without reset function
ü
The pipes are filled with insulating fluid.
1. Remove the test button cover sleeve (open-end wrench, wrench size 24).
2. Press the test button down and release.
ð
The upper and lower float gauges are pressed down and the dry-reed
magnetic switches of both float gauges issue a signal.
ð
The float gauges return to their starting position and the signals stop.
Check the position of the float gauges via the inspection window.
3. Fasten the cover sleeve onto the test button (open-end wrench, wrench
size 24, torque 5 Nm).
ð The test is complete.
Test with reset function
ü
The pipes are filled with insulating fluid.
1. Remove the test button cover sleeve (open-end wrench, wrench size 24).