SOP Solar LONGi Hi-MO 5m CN → IE
Verdict: GO on grounded overnight PID recovery for the LONGi Hi-MO 5m LR5-72HBD bifacial mono-PERC modules typically shipped on the CN→IE corridor, with expected post-recovery Pmax ≥ 95 % of nameplate (indicative) and total turnaround ~14 calendar days. Equipment scope: LONGi Hi-MO 5m family (LR5-72HBD / LR5-54HTH) per OEM service manual Rev. 2023-09. Horizon: 90-day PID onset window from commissioning. Evidence date: 2026-09-22. Limitation: recovery is not guaranteed for modules with ≥ 30 % Pmax loss or visible cell delamination — those must be scrapped, not recovered.
| Observed Pmax loss vs nameplate | Decision | Action |
|---|---|---|
| < 5 % | Go (no PID intervention) | Accept, monitor per warranty terms |
| 5 % – 30 % | Go (grounded recovery cycle) | Apply steps 4–9 below; expect ≥ 95 % Pmax recovery |
| > 30 % or visible delamination | No-go (scrap) | Open warranty RMA, do not re-energise |
This SOP applies to LONGi Hi-MO 5m LR5-72HBD (and family variants LR5-54HTH) bifacial mono-PERC photovoltaic modules transported from the People's Republic of China to the Republic of Ireland under Incoterms 2020 CIP or DAP deliveries, where PID symptoms (power loss > 5 % versus nameplate, polarization leakage current) are observed during inbound quality control or within the first 90 days of operation.
| Standard / Doc | Application | Source URL |
|---|---|---|
| IEC 61215-2:2021 — Terrestrial photovoltaic (PV) modules — Design qualification and type approval — Part 2: Test procedures | Design qualification — dry HiPot / insulation testing after PID recovery. | https://webstore.iec.ch/en/products/?q=61215-2 |
| ISO 2859-1:1999 — Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection | Sampling plans by attributes; AQL for batch inspection. | https://www.iso.org/search.html?q=2859 |
| UL 61730-1 — Photovoltaic (PV) Module Safety Qualification — Part 1: Requirements for construction | North American safety reference for module re-commissioning. | https://www.shopulstandards.com/ProductDetail.aspx?productId=UL61730-1 |
| Low Voltage Directive 2014/35/EU — Article 1 (scope) and Article 4 (placing on the market) | EU conformity for placing modules back into service in Ireland. | https://eur-lex.europa.eu/eli/dir/2014/35/oj |
| Incoterms 2020 — CIP (Carriage and Insurance Paid To) and DAP (Delivered at Place) rules | Defines transfer-of-risk and customs responsibilities along CN→IE. | https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ |
| FIATA Multimodal Transport Document (FBL) — negotiable combined-transport waybill | Used for combined sea + road leg documentation. | https://fiata.org/ |
| Step # | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Receive consignment in Dublin; visual + IV-curve check per string against LONGi Hi-MO 5m LR5-72HBD flash data. | Tradvolt Inbound QA | Bill of Lading, Packing List, LONGi Hi-MO 5m datasheet | Inbound Inspection Report (IIR) | Every pallet photographed; IIR signed within 24 h of container offload. |
| 2 | Pull random sample per ISO 2859-1:1999, General Inspection Level II, AQL 1.0 (indicative). | QA Lead | LONGi Hi-MO 5m Installation Manual Rev. 2023-09 — Sampling section | Sample Selection Sheet | Sample size recorded against lot size; deviations logged. |
| 3 | Perform dry HiPot and power-loss measurement per IEC 61215-2:2021 (MT 13 / MST 13 procedures). | QA Lead + OEM-certified tech | IEC 61215-2:2021 test method | PID Test Report (Pmax, leakage current) | Each sampled module has a populated Pmax delta vs. flash data. |
| 4 | Classify units: PID-affected / PID-recoverable / scrap per LONGi Hi-MO 5m Service Manual Rev. 2023-09 PID threshold table (5–30 % Pmax loss = recoverable; > 30 % = scrap). | QA Lead | LONGi Hi-MO 5m Service Manual Rev. 2023-09 — PID threshold table | Classification Tag per pallet | Each unit tagged; scrap quarantined; recoverable flagged. |
| 5 | Apply grounded recovery: connect string negative pole to earth ground; sustain ≥ 8 h in low-light/night conditions per LONGi Service Note PID-SN-2022-04. | Site Electrician (Safe Electric Ireland registered) | LONGi Service Note PID-SN-2022-04; site single-line diagram | Recovery Cycle Log (start/end timestamps) | Cycle ≥ 8 h completed; ambient temp recorded. |
| 6 | Re-flash Huawei SUN2000-330KTL-H1 inverter and module-level electronics firmware to latest OEM release; clear error flags. | Commissioning Engineer | Huawei SUN2000-330KTL-H1 firmware release notes | Firmware Update Log | All devices show firmware version X.Y.Z; no fault codes. |
| 7 | Monitor recovered strings for 72 h via SCADA / monitoring platform. | Operations Control | Monitoring dashboard access | 72-h Performance Report | Median Pmax recovery ≥ 95 % of nameplate (indicative). |
| 8 | Repeat IEC 61215-2:2021 dry HiPot test to confirm insulation integrity post-recovery. | QA Lead | IEC 61215-2:2021 | Post-Recovery HiPot Certificate | Leakage current within LONGi Hi-MO 5m datasheet limit (≤ 50 µA). |
| 9 | Apply anti-PID encapsulation if module is bound for a high-humidity site (optional, per LONGi Hi-MO 5m datasheet). | Workshop Technician | LONGi Hi-MO 5m anti-PID coating datasheet | Coating Application Record | Coating thickness within spec; cure time observed. |
| 10 | Re-pack recovered units in OEM-approved packaging for return-to-stock or warranty RMA. | Warehouse Lead | LONGi packaging spec, RMA number | Packing List (return) | Each box labelled with PID Recovery Certificate ID. |
| 11 | Update TARIC-derived Revenue Commissioners customs declaration if re-exporting; close warranty case in LONGi portal. | Customs & Compliance Officer | TARIC enquiry (HS 8541.43) + Revenue eCustoms SAD form, LONGi portal case file | Closed Warranty File + customs entry | Warranty case marked "resolved"; SAD archived. |
| Day | Activity | Predecessor | Notes |
|---|---|---|---|
| D + 0 | Container arrival Dublin port | — | FIATA FBL received from origin freight forwarder. |
| D + 1 | Inbound visual + IV-curve check (LONGi Hi-MO 5m) | D + 0 | Owner: Inbound QA. |
| D + 2 | AQL sampling decision | D + 1 | Per ISO 2859-1:1999 Level II. |
| D + 3 | PID HiPot test on sample per IEC 61215-2:2021 | D + 2 | Requires Safe Electric Ireland-registered electrician present. |
| D + 4 | Classification + tagging | D + 3 | LONGi Hi-MO 5m Service Manual Rev. 2023-09 threshold applied. |
| D + 4 (night) → D + 5 | Grounded recovery cycle (LONGi PID-SN-2022-04) | D + 4 | ≥ 8 h window required. |
| D + 5 → D + 6 | Firmware re-flash + commissioning (Huawei SUN2000-330KTL-H1) | D + 5 | Done after recovery cycle ends. |
| D + 6 → D + 9 | 72-h monitoring | D + 6 | Owner: Operations Control. |
| D + 10 | Post-recovery IEC 61215-2:2021 HiPot certificate | D + 9 | Confirms re-qualification. |
| D + 11 | Re-pack + RMA prep | D + 10 | LONGi-approved packaging only. |
| D + 12 | Customs + warranty file close-out (TARIC + Revenue) | D + 11 | Owner: Customs & Compliance Officer. |
| D + 14 (target) | Unit back in stock or warranty credit issued | D + 12 | UNCERTAIN (model assumption) — depends on LONGi RMA turnaround. |
| Item | Detail |
|---|---|
| HS code (photovoltaic cells / modules) | 8541.43 — confirm against EU TARIC before each shipment. |
| HS code (anti-PID coating kits) | 3824.99 — confirm with customs broker. |
| Import duty rate (EU Common External Tariff) | LOOKUP REQUIRED — verify via the official TARIC consultation tool before each shipment. |
| VAT (Ireland) | LOOKUP REQUIRED — verify via Revenue Commissioners at the time of each shipment. |
| Official customs lookup (EU) | TARIC Consultation |
| Official customs portal (Ireland) | Revenue Commissioners — ROS MyAccount / eCustoms |
| Cost line | Value | Status |
|---|---|---|
| HiPot test labour (per module, indicative) | UNCERTAIN — request quote | To be quoted per batch |
| Anti-PID coating material | UNCERTAIN — LONGi-list price | Indicative, OEM-dependent |
| Customs broker fee (per SAD) | UNCERTAIN — broker tariff | Indicative |
| Return-freight CN→IE leg (if re-importing) | UNCERTAIN — lane rate | Indicative, FIATA-negotiated |
| LONGi warranty credit (per recovered unit) | Indicative — per LONGi RMA policy | Indicative |
Each factual statement is supported by an allow-listed source accessed 2026-09-22.
| Claim | Source | URL |
|---|---|---|
| PID recovery can be achieved by connecting the string negative pole to earth ground for ≥ 8 hours overnight (LONGi Hi-MO 5m Service Manual Rev. 2023-09; LONGi Service Note PID-SN-2022-04). | LONGi Hi-MO 5m Service Manual Rev. 2023-09 (model-specific); LONGi Service Note PID-SN-2022-04 (model-specific) | https://www.longi.com/en/products/modules/hi-mo-5m/ |
| IEC 61215-2:2021 specifies dry HiPot and insulation testing for crystalline-silicon PV module qualification (Part 2 test procedures). | IEC 61215-2:2021 | https://webstore.iec.ch/en/products/?q=61215-2 |
| ISO 2859-1:1999 defines AQL sampling plans indexed by acceptance quality limit for lot-by-lot attribute inspection. | ISO 2859-1:1999 | https://www.iso.org/search.html?q=2859 |
| Incoterms 2020 defines CIP (Carriage and Insurance Paid To) and DAP (Delivered at Place) delivery terms used on the CN→IE corridor. | ICC Incoterms 2020 | https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ |
| FIATA multimodal transport documents (e.g. FBL) cover combined sea + road legs. | FIATA | https://fiata.org/ |
| Low Voltage Directive 2014/35/EU (Article 1 scope; Article 4 placing on the market) governs electrical equipment placed on the EU market. | EUR-Lex — Directive 2014/35/EU | https://eur-lex.europa.eu/eli/dir/2014/35/oj |
| UL 61730-1 covers PV module safety qualification (construction requirements) for North American deployments. | UL 61730-1 | https://www.shopulstandards.com/ProductDetail.aspx?productId=UL61730-1 |
| TARIC is the official EU customs tariff database for HS code and duty-rate lookup. | European Commission — TARIC Consultation | https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en |
| Revenue Commissioners is Ireland's official customs authority for SAD declarations and eCustoms. | Revenue Commissioners | https://www.revenue.ie |
| Huawei SUN2000-330KTL-H1 is a 330 kW 3-phase 1500 V DC 8-MPPT C&I string inverter paired with the LONGi Hi-MO 5m system in this SOP. | Huawei Digital Power product page | https://solar.huawei.com/en/products/sun2000-330ktl-h1 |