Timer; Start Trip; Test Mode - ComAp MainsPro Global Manual

9.4 Timer

MainsPro provides two time counters: since the unit power-up and since the last
timers for investigation of failures that were detected by MainsPro unit. Please note that MainsPro does not
provide RTC clock and after each power-up of the unit, the time and date is lost. For this reason only indication
of days / hh : mm is used. The accuracy of the time measurement may also not be fully guaranteed. During
internal tests, the measurement error of 4 seconds per 24 hours was recorded.

9.5 Start trip

The unit supports start into the
setpoint Start Trip (page
after the auxiliary power supply is turned on. If there are no failures detected by the unit measurement, it is
possible to provide Fault reset (page 32)
operation. If the setpoint is set to DISABLED, the unit goes directly into the fail-free state.
The purpose of this functionality is to allow automatic delayed return to mains in case that the mains is
completely lost and MainsPro unit is powered from the same mains voltage.

9.6 TEST mode

MainsPro provides a TEST mode, which enables phase-to-phase testing of 3-phase protective features by
single-phase power source.
The test mode may be activated by entering the init screen (entered by pressing the ENTER and ESC at the
same time). Follow by ← button and then ↑ button. This will open the Test mode activation screen.
Select Y to enter the TEST mode.
The voltage asymmetry protections are deactivated.
The following functions are fix-assigned to the appropriate relay outputs, regardless of their actual
assignment:
Comm Trp Per to RE3
f Sig to RE4
U Sig to RE5
In TEST mode, the setpoint group TEST becomes visible. This group contains only one setpoint – „Phase".
Use this setpoint to assign to which input is the 1-phase measurement voltage source connected (U
U ).
C
All relevant protections are evaluated only in that phase, which is selected:
If TEST/Phase = Ua, the following protective functions are evaluated:
Overvoltage and undervoltage on the UA terminals, with dual stage setting, including the Alt
parameters possibility
Overfrequency and underfrequency on the UA terminals, with dual stage setting, including the Alt
parameters possibility
Loss OF Mains protections on the UA terminals, with the Alt parameters possibility
Mains pro 1.6.1 Global Guide
TRIP (page 31) state after connection of the power supply, depending on the
53). If this setpoint is set to ENABLED, the unit goes into the TRIP state immediately
by any of the mentioned means and so to put the unit into fault-free
TRIP (page 31). Use these
, U
A
or
B
42