Operating Mode Of The Integrated Discharger - SCHNIER smart-E 310 Operating Manual

7.9. Operating Mode of the integrated discharger

Without additional measures, as for example the use of a ground switch or discharger,
the electrostatic system is discharged via the measurement/bleeder resistance of the
HV generator. This is done after an E function.
HS-Aus
kV
HS off
sicher
safe
t
This means that the discharge process is fast at the beginning, however becomes pro-
portionally slower. The smart-E 310 and smart-E 510 signal messages "safe" if the
output voltage
< 500 V, since only this value is considered "safe". This means concretely that the dis-
charge time often takes longer than 10 seconds.
If this discharge time is not available, because for example a Bell-cleaner is being
used, then the discharger can reduce the discharge time to a minimum.
The discharger must not be separately controlled; this is done by the smart-E 310 or
smart-E 510. As soon as the high-voltage is switched off, the smart-E 310 or
smart-E 510 activates the discharger. This then draws a constant discharge current of
200 µA until the system is completely discharged.
HS-Aus
kV
sicher
t
With a system capacity of 2 nF and an output voltage of 100 kV, the high-voltage is
discharged within a second.
Operating manual 810378-BAL-EN-170330 Mach/30 2017 Page 30 of 54