Appendix E: Interconnection Standards
The information in this appendix complies with the IEEE 1547-2018 standard. The IEEE
1547-2018 standard, establishes criteria and requirements for interconnection of
distributed energy resources (DER) with electric power systems (EPS) and associated
interfaces.
Performance Categories and Interconnection
Standards
Description Category / Standard
Normal Operating Performance Category
A
(1)
, B
Abnormal Operating Performance Category 3
Additional Abnormal Categories 1
(1)
, 2
(1)
Interconnection Standards
UL 1741 Ed. 3 (SA), UL 1741 Ed. 3
(SB), IEEE 1547-2018, IEEE 1547.1-
2020, IEEE 1547a-2020, IEEE 1547.1
2020 SRD 2.0 (HECO), CA Rule 21
2017, CSA 22.3 No 9
Response to Abnormal Voltages and Frequencies
Default setting Adjustable range
Voltage (p.u.) Maximum Clearing Time (sec) voltage (p.u.) Clearing Times
1.20 0.16 1.2 0.16
1.10 13.0 1.10 - 1.20 1.0-13.0
0.88 21.0 0.0-0.88 21.0-50.0
0.50 2.00 0.0-0.50 2.0-21.0
Frequency (Hz) Maximum Clearing Time (sec) Frequency (Hz) Clearing Times (sec)
62.00 0.16 61.8-66.0 0.16-1000
61.2 300 61.0-66.0 180-1000
58.5 300 50.0-59.0 180-1000
56.5 0.16 50.0-57.0 0.16-1000
(1)
Units meet the highest performance category B, 3 and may be configured to operate at lower
categories if required by the EPS.
Appendix E: Interconnection Standards99
Three Phase Inverters with Synergy Technology PN: SExxK-xxxxIxxxx
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