Operating instructions

Protect PV.600/800 OD Series - Operating Instructions
Page 30 of 100 8000041160 BAL
T
he DC voltage that is introduced is guided to the inverter stack
via the fuse and the DC load interrupter switch Q4. A PV input cur-
rent measurement system can be installed upstream of the inverter
stacks as an option.
The IGBT inverter converts this DC voltage into a 3-phase AC
voltage. The sinusoidal current is fed into the supply mains via an
AC filter, contactor K7, the AC load interrupter switch Q26 and an
external mains transformer.
The interrupter switches Q26 and Q4 are switched off by the soft-
ware if a fault occurs, although there is still voltage at the DC in-
puts. ( Chapter 5.7.1 - General, Monitoring)
The equipment can be manually isolated on the AC side at Q26 for
maintenance work. For complete isolation of the equipment, the
connected GCBs (IcX) must also be switched off.
The control unit and the fans can be supplied with power from a
separately connected AC mains with 230 V, 50 Hz or via an auxil-
iary transformer.
4.5.1 DC Input
The DC current generated by the PV modules (fields/zones) is col-
lected in the GCBs. Up to eight GCBs can be connected to one
Protect PV.
4.5.2 Input Current Measurement System (Optional)
The input current measurement assembly is installed upstream of
the IGBT inverter stack. The measurement system consists of a
PCB with up to eight (one per line) connected LEM current trans-
formers HTA 200-S. The measured values determined for the input
currents of the individual lines are passed on to the master control
system.