Definition
IS 16221 is the Indian Standard for safety of solar PV inverters, aligned with international IEC 62109. Required for BIS certification and ALMM List II listing in India.
Key Takeaways
- IS 16221 = Indian inverter safety standard.
- Equivalent to IEC 62109.
- Companion to IS 16170 (performance).
- Required for ALMM listing.
- Inverters certified under both for grid-tied solar.
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