-EN Rev. E Operating instruction SCK Gas Sampling System 167
Checking the residual current circuit breaker
Residual current circuit breakers disconnect the monitored circuit from the
remaining grid in the event of a certain differential electric current. Test the
residual current circuit breaker at regular intervals in order to simulate this
error.
twice yearly
Danger of electric shock when control cabinet is open, open connection or
terminal boxes
Only specialized electrical personnel may work on the electrical system.
Observe national regulations pertaining to electrical equipment.
The main terminals -X30, -X40 and the input terminals of the main switches
-Q30, -Q40 are live even when the main switches are off.
All metallic parts in the environment that can be touched at the same time
as the machine must also be grounded together.
Check pre-protection according to the documentation.
The following diagram shows the location of the residual current circuit
breaker in the control cabinet. Integration of residual current circuit breakers
is variable in the gas sampling system. No residual current circuit breaker is
integrated in the standard model, the "FI" option (
-F30
) has a 4-pole residual
circuit breaker for the normal grid, the "FI" + "UPS" option (
-F40
) has two
residual circuit breakers (4-pole and 2-pole).
Control cabinet key to open the control cabinet
The service switch is in the
ON
position; the gas sampling probe is completely
retracted from the kiln (see
Operating the service switch
on page 161).
Meaning
components
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