Fimer PVS-50.0 User manual

Solar Inverter
PVS-50.0/60.0-GROUNDING KIT
(For PVS-50/60-TL )
Quick Installation Guide
In addition to what is explained in this quick installation guide, the safety and installation information provided in the product manual must be read and
followed. The technical documentation for the product is available at the website.
The device must be used in the manner described in the manual. If this is not the case the safety devices guaranteed by the inverter might be ineffective.

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1. Main components
Main components
01 Negative grounding board
02 Negative pole connection cable
03 Wiring signals
04 Wiring connector signals
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01
03
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2. Supplied component list
Components available in the kit Quantity
Negative grounding board 1
Wiring signals 1
Warning label
Quick Installation Guide

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3. Assembly instructions
WARNING –BAccess to the zones inside the inverter must be carried out with the equipment disconnected from the network and from the
photovoltaic generator. Isolate the inverter by externally disconnecting the AC voltage and DC voltage as well as any voltage connected to
multifunction relays. Opening only the DC switches inside the inverter does not permit to operate in safe way considering that some internal parts
may remain at hazardous voltages.
ATTENTION –AWhen the PVS-50.0/60.0-GROUNDING KIT is assembled in one or more inverters connected in parallel to the same transformer
winding:
1.the inverters and the PV Array must be installed in Closed Electrical Operating Areas where the access is restricted to instructed persons.
The above is required because the below listed protections against electrical shock hazard on the PV arrays are not included inside inverter or do
not operate when grounding-kit is installed:
• Array insulation resistance detection for functionally grounded arrays
• Protection by application of Residual Current Devices
• Residual current monitoring for sudden changes
The following forms of shock hazard protections are provided integral to the inverter:
• Continuous residual current to ground
2. the maximum current flowing to earth, in case of ground fault on the DC side of the plant will be less than Nx500mA (PVS-50-TL) or Nx600mA
(PVS-60-TL) where N is the number of inverters connected to the same transformer winding. This current value must be considered to size the
wires and to evaluate the risk of fire.
ATTENTION –AThe earth protection circuit (PE) of the PV plant must have the same potential of the earth protection circuit (PE) of the building (in
case of roof-top installation).
WARNING –BThe extraneous conductive parts of the building and the earthed conductive parts of the plant must not be accessible simultaneously.
ATTENTION –AIt is not recommended to use the grounding kit in buildings with high risk of fire.
WARNING –BIt is not recommended to use the grounding kit in buildings with LPS (lightening protection systems) to avoid potential differences
among different earthed conductive parts of the PV plant that people can touch. Restricted access to PV plant reduces this hazard.
The GROUNDING KIT must be installed inside the wiring compartment.
• Open the front cover.
• Install the grounding board on the holder positioned on the lower side of the communication and control card (area highlighted in the figure to the side).

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• Press down lightly on both sides of the board until two holding clips will secure the board to the support and connect the wiring signals:
Click
Click
• Connec the negative pole connection cable (as in the illustration).
Torque: 4Nm
• Apply the Warning Label in the right side of the inverter (close to the other labels).

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4. Grounding Kit enable via Web User Interface
After commissiong the unit it is necessary to enable the GROUNDING KIT entering in the Web UI using the administrator account generated during the
previous commissioning procedure.
Enter the Menu: Setting/Additional Function and:
• Set as ENABLED the Grounding Kit with the proper selector.
• Set the "Max Vdc-/gnd for Grounding Kit" (range: 0...200V); recommended value: 120V.
This parameter identifies the threshold Voltage between negative pole and ground, which triggers the inverter disconnection for Ground fault (E037).
See the picture below:
After the previous setting, in the Menu Home/Additional Functions will compare the statement "Grounding-kit enabled".

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In the Menu Home /GF interface subsection the following parameters are described:
a) Vneg-gnd → Voltage between negative pole and ground
b) Vpos-gnd → Voltage between positive pole and ground
See the picture below:

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5. Technical data
Grounding kit
Compatibility Three-phase inverter models: PVS-50.0/60.0-TL
Type of grounding Resistive
Pole connected to the Ground/Earth Negative
System requirements
Isolating transformer Mandatory 1)
Configuration of the isolating transformer
-IT System-
Delta or wye configuration on the inverter side, can be used, but transformer poles, including star
center point (neutral), cannot be connected/referred to ground
Configuration of the photovoltaic strings If the system has multiple inverters connected to the same transformer, all strings must be of the same
panel type, number of panels in series and orientation.
Maximum number of inverters that can be connected in parallel on a single winding of transformer:
Nominal power of the transformer 1000 kVA 1250 kVA 1600 kVA 2000 kVA 2500 kVA
Maximum number of PVS-50-TL 20 25 32 40 N.A.
Maximum number of PVS-60-TL 17 21 27 33 40
1. NOT SUITABLE for single-or multi-inverter systems that are directly connected to the low voltage network.
The features that are not specifically mentioned in this data sheet are not included in the product

FIMER_PVS-50.0_60.0-Grounding Kit-Quick Installation Guide-EN- RevB
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For more information
please contact your
local FIMER
representative or visit:
fimer.com
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information in this document.
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08-02-2021