New Zealand North Island (EIPC cl 8.19(1)) ride-through requirements
Frequency ride-through for New Zealand. Every breakpoint below is read from the code itself, and carries the clause it came from — so you can check it, not just cite it.
What is the frequency ride-through envelope for New Zealand North Island (EIPC cl 8.19(1))?
The plant must ride through for any frequency that stays on or above this envelope. The lower (under-frequency) band ramps linearly from 47 Hz at t = 0 to 47.1 Hz at 5 s; then ramps linearly from 47.1 Hz at 5 s to 47.3 Hz at 20 s; then ramps linearly from 47.3 Hz at 20 s to 47.5 Hz at 2 min; then 47.5 Hz from 2 min onward — the last band the envelope defines, with no stated end time.
The clause states this boundary as a line; intermediate points are interpolated between its stated vertices.
Applies to Generating stations connected to the national grid, North Island
Lower limit
| From | To | Frequency | Between the points |
|---|---|---|---|
| 0 | 5 s | 47 → 47.1 Hz | Ramps linearly |
| 5 s | 20 s | 47.1 → 47.3 Hz | Ramps linearly |
| 20 s | 2 min | 47.3 → 47.5 Hz | Ramps linearly |
| 2 min | no stated end | 47.5 Hz | Held flat |
The clause this came from
Electricity Industry Participation Code 2010, Part 8, cl 8.19(1)(a)-(f), cl 8.19(3), cl 8.21(1), cl 8.1B — verified verbatim in both the 1 May 2025 and 1 July 2026 consolidations.
Who does New Zealand North Island (EIPC cl 8.19(1)) bind, and since when?
Generating stations connected to the national grid, North Island. No date of effect is published here — grid codes are reissued, so check the current issue before relying on it.
These figures are a reading aid, not legal advice. Grid codes are reissued: verify against the current edition before you design to them.
Digitised operating parameters beyond ride-through — droop, reactive capability, operating ranges — are published for 36 of the 66 codes in this atlas, not yet for New Zealand North Island (EIPC cl 8.19(1)). That is a gap on this site, not a statement that New Zealand North Island (EIPC cl 8.19(1)) sets none — the atlas hub marks the codes that carry them.
Curve data last checked against the code on — 66 standards, 130 envelopes, published by bess.engineer under CC BY 4.0.
Questions this page answers about New Zealand North Island (EIPC cl 8.19(1))
- Does New Zealand North Island (EIPC cl 8.19(1)) require ride-through, or only that the plant does not trip?
- Ride-through. Every envelope on this page is a performance duty the plant must meet, not a protection-setting no-trip boundary — they are different obligations. That is what these curves are; they are not everything New Zealand North Island (EIPC cl 8.19(1)) contains. The requirement sentence under each chart says which side of the curve is the compliant one.
- Are the numbers on this page taken from New Zealand North Island (EIPC cl 8.19(1)) itself?
- Yes. Every breakpoint is read from the code, and each envelope carries the clause it came from, quoted in full under its chart — so you can check the figure against the standard rather than cite it from this page.
- Which events are charted for New Zealand North Island (EIPC cl 8.19(1))?
- New Zealand North Island (EIPC cl 8.19(1)) is charted here with 1 envelope — frequency ride-through (FRT). No low-voltage or high-voltage envelope is charted here — check New Zealand North Island (EIPC cl 8.19(1)) itself before concluding it sets none.
Ride-through, in context.
An envelope is a compliance boundary; understanding why it exists is a different question. The ride-through and grid-forming entries cover the engineering, and the Engineering Foundations course builds it from the physics up.
Also for New Zealand: New Zealand (EIPC cl 8.25A), New Zealand North Island (EIPC cl 8.25A), New Zealand South Island (EIPC cl 8.25A)
Elsewhere in Asia-Pacific: Taiwan (TPC), Vietnam BESS (Circular 05/2025/TT-BCT Art. 44), Australia (NER / AEMO), and 9 more