| Equipment | Location | Horizon | Evidence date | Limitation |
|---|---|---|---|---|
| Huawei SUN2000-12KTL-M5 | NO receiving site, pre-grid-sync commissioning | Pre-energization, single visit | 2026-09-22 | Trip time and V/f windows are model/firmware-specific; substitute model assumptions for any other SKU in the M5 family or for older firmware. |
This Standard Operating Procedure describes the on-site anti-islanding protection test applied to Huawei SUN2000-12KTL-M5 three-phase string inverters shipped along the CN→NO logistics corridor. The test is parameterised against Huawei FusionSolar SUN2000-(12KTL–25KTL)-M5 Service Manual v3.0 (2024-09) and firmware SUN2000 V200R024C10, and is performed at the receiving site in Norway prior to grid synchronization. It forms part of the commissioning dossier handed over to the local Distribution System Operator (DSO). The trip-time limit (≤ 2.0 s) and the protective windows (V: 176–276 Vac; f: 47.5–52.0 Hz) are the OEM defaults carried by V200R024C10 and shall be re-read against the firmware actually loaded on the unit at the time of test. [Claim | Src: Huawei FusionSolar SUN2000-(12KTL–25KTL)-M5 Service Manual v3.0 (2024-09) | URL: https://solar.huawei.com/en | accessed 2026-09-22] [Claim | Src: IEC 62116:2014, utility-interconnected photovoltaic inverters — test procedure of islanding prevention measures | URL: https://webstore.iec.ch/ (catalogue; full designation IEC 62116:2014 cited in text) | accessed 2026-09-22]
| Step # | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Verify SUN2000-12KTL-M5 service manual scope (v3.0, 2024-09) and firmware build (SUN2000 V200R024C10) | Lead Field Engineer | Huawei FusionSolar SUN2000-(12KTL–25KTL)-M5 Service Manual v3.0 (2024-09) | Work Order, line 2 | Manual revision (v3.0, 2024-09) and firmware version (V200R024C10) recorded on the work order. |
| 2 | Stage tools, instruments, and PPE; log calibration dates | Field Technician | Calibration certificates (instruments) | Toolbox checklist | All instruments within calibration validity; PPE inspected. |
| 3 | Open LOTO permit, isolate inverter AC and DC, verify zero energy | Senior Electrician | LOTO Permit form | LOTO Permit, signed | Zero-energy state proven with a two-pole voltage tester at the SUN2000-12KTL-M5 AC and DC terminals. |
| 4 | Configure grid simulator to 230 V / 50 Hz and apply programmable R/L load matching SUN2000-12KTL-M5 nameplate (12,000 W, 22 A max AC output) | Field Technician | SUN2000-12KTL-M5 datasheet (nameplate) | Grid simulator setup sheet | Simulator output stable within ±1 % of nominal. |
| 5 | Execute anti-islanding trip-time measurement | Lead Field Engineer | Grid simulator setup sheet | Oscilloscope capture | Trip time ≤ 2.0 s (SUN2000 V200R024C10 default) for each valid capture. |
| 6 | Sweep V (176–276 Vac) and f (47.5–52.0 Hz) outside protective window | Lead Field Engineer | SUN2000 V200R024C10 default V/f window | V/f sweep log | Inverter ceases to energize within clearing time (≤ 2.0 s) for every sweep point. |
| 7 | Re-sync, repeat trip test twice, record worst-case result | Field Technician | Test record sheet | Test record sheet, line "worst case" | Three valid captures archived; worst case ≤ 2.0 s. |
| 8 | Restore interlocks, remove LOTO, sign commissioning section | Senior Electrician | LOTO Permit, Work Order | Work Order, signed | LOTO removed; commissioning section countersigned. |
| 9 | Compile corridor CN→NO dossier for Norwegian DSO handover | Project Coordinator | CE DoC, customs release, test sheet | Corridor dossier (PDF) | Dossier accepted by the Norwegian DSO. |
The following files must be present at the receiving site before the test begins. Filenames are literal as stored in the Tradvolt document register.
| # | Literal filename | Purpose | Source class |
|---|---|---|---|
| 1 | Huawei_SUN2000-12KTL-M5_ServiceManual_v3.0_2024-09.pdf | Parameter reference (trip time, V/f windows) | OEM service manual (Huawei FusionSolar) |
| 2 | Huawei_SUN2000-12KTL-M5_CE_DeclarationOfConformity.pdf | Regulatory evidence of conformity | CE / EU declaration (Huawei) |
| 3 | IEC62116_2014_TestMethodology.pdf | Methodology reference | IEC standard (IEC 62116:2014) |
| 4 | Anti-Islanding_TestSheet_SUN2000-12KTL-M5.xlsx | Live capture of trip-time and V/f sweeps | Tradvolt SOP template |
| 5 | Incoterms2020_DAP-Oslo.pdf | Corridor commercial term sheet | ICC publication (Incoterms 2020) |
| 6 | CN_Customs_ExportDeclaration.pdf | China outbound customs clearance | China Customs (GAC) |
| 7 | NO_Tolletaten_CustomsRelease.pdf | Norway inbound customs release | Norwegian Customs (Tolletaten) |
| 8 | LOTO_Permit_BlankForm.pdf | Permit to be filled on site | Tradvolt SOP template |
| Activity | Owner | Indicative duration | Predecessor | Cost slot |
|---|---|---|---|---|
| Pre-shipment QA at CN factory (factory acceptance test) | CN QC team | 2 working days (indicative) | — | Indicative; model assumption — depends on OEM/contract. |
| Export customs clearance in CN | CN customs broker | 1 working day (indicative) | FAT signed | Indicative; model assumption. |
| Ocean freight CN→NO port | Freight forwarder | Weeks, per booking (indicative) | Export clearance | Indicative; model assumption. |
| Import customs clearance in NO (Tolletaten) | NO customs broker | 1–2 working days (indicative) | Freight arrival | Indicative; model assumption. |
| On-site anti-islanding test on SUN2000-12KTL-M5 | Lead Field Engineer | ≈ 4 hours (indicative) | DAP Oslo delivery | Indicative; model assumption. |
| DSO acceptance and permission to operate | Norwegian DSO | Weeks, per DSO queue (indicative) | Test sheet approved | Indicative; model assumption. |
HS code classification must be confirmed against the official customs portal for each leg of the corridor before any commercial invoice is issued. Rates are intentionally left as PENDING — lookup; do not hardcode. EU-side classification, where relevant for EU-origin dispatch or comparison, is confirmed via the TARIC consultation tool. [Claim | Src: EU TARIC consultation | URL: https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en | accessed 2026-09-22] [Claim | Src: Norwegian Customs (Tolletaten) — Tariff search | URL: https://www.toll.no/en/ | accessed 2026-09-22] [Claim | Src: China Customs (GAC) | URL: http://www.customs.gov.cn/ | accessed 2026-09-22]
| Item | HS code (lookup pending) | CN export duty | NO import duty | VAT | Source |
|---|---|---|---|---|---|
| Huawei SUN2000-12KTL-M5 string inverter | PENDING — lookup | PENDING — lookup | PENDING — lookup | PENDING — lookup | Norwegian Customs (Tolletaten) tariff search; China Customs (GAC) |
| Spare inverter power module | PENDING — lookup | PENDING — lookup | PENDING — lookup | PENDING — lookup | Norwegian Customs (Tolletaten) tariff search |
| Test instruments (returned loan) | PENDING — lookup | PENDING — lookup | PENDING — lookup | PENDING — lookup | Norwegian Customs (Tolletaten) tariff search |
Disclaimer: duty and VAT rates must be looked up at booking time on the official portals of Norwegian Customs (Tolletaten) and China Customs (GAC). For any EU-dispatch or cross-reference, use the EU TARIC consultation tool. The entries above are placeholders to be completed by the broker; no rate is committed by Tradvolt on this page.
The test is accepted only when the SUN2000-12KTL-M5 (firmware V200R024C10) ceases to energize the simulated grid within the clearing time stated in the Huawei service manual for every sweep of V and f. Concretely: trip time ≤ 2.0 s for every V/f point outside the protective window (V: 176–276 Vac; f: 47.5–52.0 Hz), with the worst case of three captures archived on the test sheet. [Claim | Src: IEC 62116:2014 | URL: https://webstore.iec.ch/ | accessed 2026-09-22] [Claim | Src: Huawei FusionSolar SUN2000-(12KTL–25KTL)-M5 Service Manual v3.0 (2024-09) | URL: https://solar.huawei.com/en | accessed 2026-09-22] The visual inspection of the equipment shall confirm that the CE marking and the OEM nameplate are legible and undamaged. [Claim | Src: CE marking guidance | URL: https://single-market-economy.ec.europa.eu/single-market/ce-marking_en | accessed 2026-09-22]
Where the anti-islanding test is performed on a sample drawn from a production batch, the sample size and acceptance number shall be derived from ISO 2859-1 general inspection Level II unless the contract specifies otherwise. [Claim | Src: ISO 2859-1 — Sampling procedures for inspection by attributes | URL: https://www.iso.org/search.html?q=2859 | accessed 2026-09-22]
Deliveries along this corridor are typically quoted DAP Oslo per ICC Incoterms 2020; the buyer assumes import duty and VAT risk after arrival at the named place. [Claim | Src: ICC Incoterms 2020 | URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | accessed 2026-09-22] Where multimodal forwarding is required, FIATA multimodal documents are referenced. [Claim | Src: FIATA documents | URL: https://fiata.org/ | accessed 2026-09-22]
Need a Huawei SUN2000-12KTL-M5 (or other SUN2000-(12KTL–25KTL)-M5 family SKU) delivered to your Norwegian site with the anti-islanding test pre-scheduled? Submit a request and the corridor desk will reply within two business days.
Request Quote — replies in 48h
All numerical values in this page are sourced from the named references above; where a value is shown as "indicative", "model assumption", or "PENDING — lookup", no committed figure is implied. OEM-specific values (trip time, V/f windows) are parameterised against Huawei FusionSolar SUN2000-(12KTL–25KTL)-M5 Service Manual v3.0 (2024-09) and firmware SUN2000 V200R024C10 and must be re-read against the firmware actually loaded on the unit at the time of test.