GAS CIRCUIT-BREAKERS
SF6
circuit breaker is equipped with separated poles each having its own
gas. In all types of the circuit
breakers,
gas pressure is 2 bars (absolute 3 bars). Even if the pressure drops
to I bar, there will not be any change
in
the breaking properties of the circuit breaker due to the superior
features of SF6 and Elimsan's high safety factor
for
the poles. During arcing, the circuit breaker maintains a relatively
low pressure (5-6 bars) inside the chamber
and
there will be no danger of explosion and spilling of the gas around.
Any leakage from the
chamber
will not create a problem since SF6 can undergo considerable
decomposition, in which some of toxic
products
may stay inside the chamber in the form of white dust. If the poles
are dismantled for maintenance, it needs
special
attention during removal of the parts of the pole. This type of
maintenance should be carried out only by the expertsof the
manufacturer.

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