The break chamber is equipped with an overpressure safety device.
The fixed contact (1.1) is connected t~ the flange of the porcelain
by expansion and retaining bolts. In ease of uveqJressure the
expans i on bolts wi 11, be elongated and re 1ease the pressure to
atmosphere. The porce"1 ai ns wi 11 not be damaged.
The internal pressure exerts a force on the expansion bolts
(1.10.01) which will be elongated at ~ set pressure of more than
400
%
of the rated pressure. The fixed contact 1ifts from the flange
of the porcelain and creates an opening between the flanges. The
bolts (1.10.05) retaill the fixed contact.
1.10
,...--'----..
Numb.!~r
Designation Quantity
Expans i on bolt
1.10,01
Expans i on bolt
4
1.10,02
Metal spacer
4
1.10,03
Nut M12
4
1.1Q,04
Cap ,,'llJt
4
Retaining
bolt
1.10,04
Cap nut
4
1.10,05
Bolt M12
4
1.10,06
Washer
<!>
13
4
1.10,07
Compression
sleeve
4
1.10" 08
Nut M12
4
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