Fronius CSA-US Conformity Letter for Supplement SA Fronius Symo 15.0-3 208 Certificate [EN]
Letter of Conformity for Grid Support
Interactive Inverter
UL STANDARD No. 1741- THIRD EDITION SUPPLEMENT SA
Reference Certificate: 70050250 Master Contract: 203213
Project: 80158406 Date Issued 2022-02-17
Issued to: Fronius International GmbH
Guenter Fronius Strasse 1
Wels-Thalheim, 4600
AUSTRIA
The products listed below have been found to comply with the applicabl e
requirements of UL 1741-Third Edition (Rev. September 28, 2021)
Supplement SA - GRID SUPPORT UTILITY INTERACTIVE INVERTERS
AND CONVERTERS.
Transformerless Special Purpose Grid Support Interactive Inverter, Model Fronius Symo 15.0-3 208, 3phase,
permanently connected, system ratings as f ollows:
For details related to rating, reference should be made to the CSA Certification Record, the Descri ptive Report or
Annex A Ratings for Certificate of Conformance.
APPLICABLE REQUIREMENTS
*UL Std No. 1741-Third Edition - Inverters, Converters, Controllers and Interconnection System Equipment
for Use With Distributed Energy Sources
(Rev. September 28, 2021)
Conformity to UL 1741-Third Edition (Rev. September 28, 2021) includes compliance with applicable
*Note:
requirements of UL1741 Supplement SA - GRID SUPPORT UTILITY INTERACTIVE INVERTERS AND
CONVERTERS, California Rule 21(SRDs), Hawaiian Electric Co. Rule 14, Hawaiian Electric Co. SRD-UL1741-SA-V1.0, IEEE 1547, IEEE 1547a and IEEE 1547.1.
.
Issued by:
Thian (Peter) Lim
Thian (Peter) Lim
DQD 507 Rev. 2019-04-30 © 2018 CSA Group. All rights reserved. Page 1
Project:
New Firmware Version
Device
Manufacturer/Type
Software Version (Release
Date)
ReCerbo (U2 on
#1 0x42C2680BD0
#4 0xEF8FE850F1
PS1 – Roach (U4
ST Microelectronics /
STM32F407XX(U4)
V1.5.1.1 (2021-02-11)
0xffc6b806
PS2 – Guard (U7
ST Microelectronics /
STM32F415VG (U7)
V0.11.8.1 (2021-03-09)
0xea584008
General Overview of UL 1741 Evaluations:
With SUPPLEMENT SA - GRID SUPPORT UTILITY INTERACTIVE INVERTERS AND CONVERTERS
UL1741 – SA
Applicable Requirement/Topic
Comment
UL1741 - SA8
Anti-islanding Protection - Unintentional Islanding with
PASS
UL1741 - SA9
(Electric Rule No. 21 Table Hh.1)
L/HVRT Low and High Voltage Ride-Through
PASS
UL1741 - SA10
(Electric Rule No. 21 Table Hh.2)
L/HFRT Low and High Frequency Ride-Through
PASS
UL1741 - SA11 Electric (Rule No. 21
Hh.2k)
PASS
UL1741 - SA12
(Electric Rule No. 21 Hh.2i)
PASS
UL1741 - SA13
(Electric Rule No. 21 Hh.2J)
PASS
UL1741 - SA14
(Electric Rule No. 21 Hh.2.l)
PASS
UL1741 - SA15
Volt-Watt (VW) – Optional
PASS
Reference Certificate:
70050250
80158406
Master Contract: 203213
Date Issued: 2023-02-17
Supplement to Letter of Conformity for Grid Support Interactive Inverter
Device
ReCerbo)
on ROACH)
ST Microelectronics /
STM32F437IIH6 (U2)
STM32F405ZG (U4)
V0.3.25.0 (2020-11-30)
Device Checksum
#2 0xDA43B99DD2
#3 0xEE36096821
Alterative:
ST Microelectronics /
on ECOFIL15US)
Tests were performed on model Fronius Symo 15.0-3 208, at Fronius International GmbH, Guenter Fronius
Strasse 1, Wels-Thalheim, 4600 Austria under the CSA SMTC program, witness by CSA certifier.
The following tests were performed with new firmware under the requirements of UL 1741-3rd Edition with
SUPPLEMENT SA - GRID SUPPORT UTILITY INTERACTIVE INVERTERS AND CONVERTERS
(September 28th, 2021) with acceptable results.
UL 1741 3rd Edition
Grid Support Functions Enabled
RR – Normal Ramp Rate and SS – Soft-Start Ramp Rate
SPF – Specified Power Factor
Volt/VAr Mode (Q(V)
Frequency-Watt (FW) – Optional
DQD 507 Rev. 2019-04-30 © 2018 CSA Group. All rights reserved. Page 2
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