Filter
Top Products
Protect PV.630 Operating Instructions
34 of 72 8000047961 BAL
Sequence control behaviour differs depending on which solar cells
are connected. The solar cells do not need to be earthed for op-
eration with monocrystalline or polycrystalline solar cells. In this
case, insulation measurement is always active.
For operation with thin-film solar cells, the solar cells must be
earthed. In this case, insulation measurement is not active during
earthing.
Insulation measurement sequence control features a “Maintenance
mode”. This mode can only be activated for thin-film solar cells.
Activating this mode disconnects earthing. This can be useful
when mowing areas where solar panels are installed, for example.
5.3.2 Operation With Monocrystalline or Polycrystalline Solar Cells
General:
This type of solar cell does not require active earthing.
Sequence control:
Insulation monitoring is always active.
Maintenance mode:
No action in the event of a “Maintenance mode” command.
Starting the insulation test manually:
No action, since the insulation test is always active.
5.3.3 Operation with Thin-Film Solar Cells
General:
This type of solar cell requires active earthing.
Active earthing is switched on during the day and switches off at
night. An insulation test is carried out at night.
When active earthing is switched on, the digital signals from the
isometer are ignored.
Once active earthing is switched off, a certain time is allowed to
elapse before the digital signals from the isometer are evaluated.
Sequence control:
When the equipment sequence control switches to the “Night” sta-
tus (see Chapter 5.1.6), active earthing is switched off once a cer-
tain time has elapsed.
The insulation test starts with a delay. Once a certain test time has
elapsed, the insulation test finishes and active earthing is switched
on again. If the sequence control switches to “Operation” status
before the test time has elapsed, the timer control is ignored, the
insulation test is terminated and active earthing is switched back
on.