Enphase IQ8P Microinverters
9 © 2024 Enphase Energy Inc. All rights reserved. January 2024
IOM-00002-1.0
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height of 9.5 mm (3/8") in white on a red background.
Anti-islanding methodology
The anti-islanding methodology used by Enphase IQ8P Microinverters is listed by UL and tested in
accordance with IEEE1547-2018 and UL1741-SB.
IQ8 Series Microinverter uses the Group 1 method of anti-islanding based on the definitions provided
in the list below as defined in Sand2018-8431, July 2018:
Group 1: Frequency shift with continuous positive frequency feedback.
Group 2A: Frequency shift with discontinuous or stepped positive frequency feedback.
Group 2B: Frequency shift like Group 2A except with a dead zone around 60 Hz.
Group 2C: Frequency shift with unidirectional frequency feedback.
Group 3: Monitors change of impedance.
Group 4: Monitors shift at a harmonic frequency (multiple of the fundamental).
Group 5: Passive methods like rate of change of frequency and vector shift.
Group 6: Produces negative sequence current and monitors voltage.
For any questions, contact https://enphase.com/en-ph/contact.
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