48 ATICS-2-ISO_D00046_04_M_XXEN / 03.2021
Commissioning, settings and testing
5.1.3 Tests, decommissioning
• Abide by the relevant local or national regulations for periodic verification on electrical instal-
lations.
• If you notice changes on the ATICS®, you must immediately start checking the transfer switch-
ing device.
Observe the alarms on the transfer switching device. The ATICS® reports in good time when testing or
servicing is necessary or if safe operation of the device according to IEC 61508 is no longer guaranteed
(e.g. due to component fatigue) and action must be taken.
5.2 Setting and testing according to the checklist
The settings made at the factory take into account a total changeover period t ≤ 0.5 s and switching
back to the preferred supply within 10 seconds after voltage recovery.
The response delay t(on), the dead time t(0), the delay on release t(off) and the return transfer delay
time t(2->1) of the ATICS® are configurable and must be adjusted to the requirements of the specific
application case and the requirements of DIN VDE 0100-710 (VDE 0100 Part 710) for automatic transfer
switching devices. If the current monitoring (short-circuit detection) is disabled in the menu "Settings"
> "Current", an additional short-circuit current calculation and configuration of the response time t(on)
is required.
• The total off-time (from the point at which the fault occurs until the arc in the overcurrent
protective device is cleared) must be less than the minimum delay for the changeover of the
automatic transfer switching device.
Setting: Response delay t(on)
• If several transfer switching devices are connected in series in a power supply system, it is rec-
ommended that they be time-graded.
Setting: Response delay t(on), return transfer delay time t(2->1) and delay on release t(off).
• As part of the response delay (to be custom-set), you must, at the very least, take into account
the periods of time when the circuit experiences short interruptions, and the response times
of the short-circuit protection equipment upstream or downstream. Regardless of this, a
switchover pause corresponding to the installation location should be taken into account, in
order to avoid switching overvoltages.
Setting: Response delay t(on), dead time t(0) and return transfer delay time t(2->1).
If extreme inrush current peaks (e.g. during generator start-up) are to be avoided in a system with sev-
eral transfer switching devices with downstream transformers, the ATICS® version "-ES" with external
ATICS-ES energy storage device (option, see chapter „Ordering information“ on p. 102) should be
used. For this purpose, the parameter "Load disconn." in the menu "Settings menu 1: Changeover" must
be set to "on" so that ATICS® switches to position "0" if both lines fail.
The delay time t(start) in the menu Setting/Changeover must be set differently for the individual devic-
es so that the devices switch on in a staggered manner when the voltage returns.
The factory settings and system-specific settings of the ATICS® transfer switching and monitoring de-
vice are documented in the checklist. Please carry out all the work outlined in the list and log each test
step.
Keep the checklist with this manual in the vicinity of the device.
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