Fronius Agilo 75.0 - Manual (Page 44)

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Fitting and connecting optional overvoltage protec-
tion
General Standard type II overvoltage protection can be fitted in the inverter as an option:
-
for the DC side,
- for the AC side,
- for the external AC supply of the inverter.
DIN rails and passage openings to the AC and DC terminals for the cables are provided in
the inverter for fitting overvoltage protection.
The existing remote contacts on the overvoltage protection can be connected to the NO/
alarm contact terminals in the data communication area. In the event of a fault, the incom-
ing signals can then be evaluated and shown on the display.
Overvoltage protection is not included in the scope of supply of the inverter. The engineer
is responsible for the correct selection of the relevant overvoltage protection so as to com-
ply with national and international regulations.
Safety
Fitting and con-
necting overvolt-
age protection on
the DC side IMPORTANT!
-
Provide a separate grounding terminal for each overvoltage protection device
- Make sure that the cables have adequate insulation resistance.
Fit overvoltage protection to the DIN rail on the DC side according to the manufactur-
er's instructions
Fit a grounding terminal to the DIN rail on the DC side
Remove the 2 blank screw joints on the DC side
Insert 2 M20 screw joints from the inverter's accessories kit into the openings and se-
cure them with the hexagonal nuts of the blank screw joint
Prepare the cable:
-
Strip the cable on the overvoltage protection side
- Fit the M10 cable lug on the DC connection side
Max. cable cross-section must comply with the instructions of the overvoltage
protection manufacturer.
Open the M20 screw joints
Feed the cable through
Connect the cable to the overvoltage protection device according to the manufactur-
er's instructions
WARNING! Work that is carried out incorrectly can cause serious injury and dam-
age. Overvoltage protection must only ever be installed and connected by a qual-
ified electrical installation engineer!
Follow the safety rules!
Make sure that both the AC side and the DC side of the inverter are de-energised
before carrying out any installation or connection work.
NOTE! Installing a Type I overvoltage protection device in the inverter is prohib-
ited.
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