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QUICK GUIDE –
REACTIVE POWER SETTINGS IN
DEPENDENCE OF THE GRID VOLTAGE
Quick Guide
© Fronius Australia Pty Ltd., RD & BG
Version 1.0/2018
Fronius reserves all rights, in particular rights of reproduction, distribution and translation.
No part of this work may be reproduced in any way without the written consent of Fronius. It must not be saved, edited,
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You are hereby reminded that the information published in this document, despite exercising the greatest of care in its
preparation, is subject to change and that neither the author nor Fronius can accept any legal liability
Gender-specific wording refers equally to female and male form.
1. GENERAL
Solar PV systems may only feed energy into the grid if the grid voltage is within specified limits. With the ever
increasing level of solar penetration on network, the LV grid voltage has become more difficult to control. In
order to help control the gird voltage several power quality response modes were introduced to solar PV grid
inverters via the AS/NZS4777.2:2015 Standard. These include:
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Press the 3
rd
button 5 times
- Volt response modes
- Fixed power factor or reactive power modes
- Power response mode
- Power rate limit
This document provides specific information on how to set up and activate the Fixed Power factor mode & Volt-
Var mode on the Fronius SnapINverter range according to the Energex & Ergon Connection Standard for
Micro Embedded Generating Units (0 - ≤30 kVA) Version 4. Other DNSP’s may have different set point or
requirements and therefore can be found in a separate document.
These functions are activated / adjusted in the hidden Service Menus on the Fronius SnapINverters (Galvo,
Primo, Symo, ECO) are accessed via the inverter’s display with use of a password. The Reactive Power Mode
settings are a part of the ‘PROFI’ service menu and require the use of a password that is issued by Fronius
Technical Support upon the completion of the “Request_for_Access_code_Grid_parameters_Fronius_Inverters”
form.
Once this form has been completed and logged, Fronius Technical Support will provide the PROFI MENU
access code.
For more detailed information regarding the Service Menu settings, please request the Service Menu Manual
from Fronius Australia Technical Support. Contact details are at the end of this document
2. REQUIREMENTS
2.1 Software update on the Fronius inverters
Before programing the following settings the inverter must have the latest software version installed. The
latest USB version for the SnapINverter range can be downloaded from the Fronius website via
https://www.fronius.com/en-au/australia/photovoltaics/infocentre/tech-support/software-updates-and-drivers
***In some cases the Country Setup will need to be re-loaded after the software update is completed.
2.2 Enter the hidden ‘PROFI’ service menu
Type in the access code for the hidden PROFI menu*
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*Available only upon request from Fronius Technical Support.
3. SETTINGS
3.1 DNSP Protection settings calculator:
We have developed an excel sheet – DNSP Protection settings, where you can enter the voltage and the
power factor values by provided by your corresponding DNSP’s, and obtain the Q setting range % for
different Q (U) set points on Fronius inverters.
The excel sheet also has the information on Passive Anti-islanding set points values as per
AS4777.2:2015 and how those values are interpreted in Fronius inverters, and as well as to calculate
Volt-Watt settings.
Please click on this link to access the DNSP Protection settings tool.
3.2 Example: Volt – Var settings for Energex and Ergon (QLD)
Energy Queensland specify the voltage and reactive power settings in table 2 on page 11 in their Connection
standards:
(c) Fronius Australia Pty. Ltd, 2019
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