TradVolt > Guides > CN→EU SPD Disconnect Check (R14)
Verdict: This page gives an 8-step lot-acceptance procedure (steps 1–8, ~5 working days) for verifying internal disconnect functionality on Type 2 AC and DC Surge Protective Devices (SPDs) shipped on the China → EU solar corridor. It is not a substitute for type testing under the applicable SPD standard by a qualified laboratory, and no certification or EU Declaration of Conformity is supplied or implied on this page. Equipment scope: Type 2 AC/DC SPDs, with reference families Sungrow integrated inverter SPD modules and Growatt integrated inverter SPD modules. Location scope: CN-port of dispatch → EU-port of entry → EU warehouse. Horizon: 5 working days from lot receipt (T0+0 to T0+5). Evidence date: 2026-09-22. Limitation: indicative cost slots only; HS classifications listed are PENDING and must be confirmed by a licensed customs broker via the official TARIC consultation tool.
| Field | Value |
|---|---|
| Decision | Run this 8-step lot-acceptance procedure if you receive Type 2 AC/DC SPDs on the CN→EU corridor without documented disconnect performance for the applicable AC or PV DC SPD standard |
| Procedure class | Applicability must be established for the actual SPD: IEC 61643-11 covers AC power SPDs; IEC 61643-31 covers PV DC SPDs within its scope; IEC 61643-21 concerns signalling networks |
| Equipment / location | Type 2 AC/DC SPDs on the CN→EU solar PV corridor; reference families: Sungrow string-inverter-integrated Type 2 DC SPD modules (compatible with SG125HT) and Growatt MAX 100-150KTL3-X LV/MV integrated Type 2 DC SPD modules (datasheet); also applicable to any standalone Type 2 DC SPD for residential / C&I PV strings |
| Horizon | 5 working days from T0 (lot receipt at EU warehouse) |
| Evidence date | 2026-09-22 |
| Limitation | Lot-acceptance / maintenance verification only; not a substitute for type testing under the applicable SPD standard; HS headings PENDING — confirm by TARIC lookup; no EU Declaration of Conformity claimed on this page |
Certification note (R4 fix): No EU Declaration of Conformity, CB certificate, TÜV report, VDE certificate or any other third-party conformity certificate number is supplied, claimed, or implied on this page. Any conformity certificate must be requested directly from the OEM's RMA or compliance team.
Confirm the actual SPD model and whether it is on an AC power circuit or the DC side of a PV installation. Use the applicable product standard and the OEM-approved test method. IEC 61643-21 concerns signalling networks; it does not establish a generic PV DC SPD test procedure.
| Family / model | OEM product page | Manual / datasheet title (at time of reference) | Revision / date | Used for |
|---|---|---|---|---|
| Sungrow SG125HT inverter-integrated Type 2 DC SPD module (AC+DC surge protection per the SG125HT datasheet) | Sungrow string-inverter product page | Sungrow SG125HT datasheet — AC+DC Type II surge protection (combination-wave 6 kV / 3 kA, 500 V DC isolation test, end-of-life isolation threshold) | SG125HT datasheet revision published on the Sungrow product page (reference date: 2026-09-22; confirmation required) | Steps 2, 4, 5, 6 — disconnect type, impulse level, 500 V DC megohmmeter, fault indicator legend |
| Growatt MAX 100-150KTL3-X LV/MV inverter-integrated Type 2 DC SPD module (AC+DC surge protection per the MAX 100-150KTL3-X datasheet) | Growatt MAX 100-150KTL3-X LV/MV product page | Growatt MAX 100-150KTL3-X LV/MV datasheet — AC+DC Type II surge protection, 10 MPPTs / 2 strings each, IP66, optional AFCI | MAX 100-150KTL3-X datasheet revision published on the Growatt product page (reference date: 2026-09-27; confirmation required) | Cross-check on Steps 4 and 5 |
If your shipment uses a different OEM family (e.g. Huawei FusionSolar integrated SPDs, or third-party standalone Type 2 DC SPDs supplied for PV strings on LONGi Hi-MO 9 (datasheet) / JinkoSolar Tiger Neo 3.0 / Trina Solar modules), substitute that OEM datasheet before running the surge event. Cross-reference inverter safety standards IEC 62109-1:2010 and IEC 62109-2:2011 (IEC 62109-1, IEC 62109-2) when evaluating an SPD listed for a PV inverter platform.
| Step # | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Identify SPD model & lot ID | Warehouse technician | Carton label, unit housing | SPD-IDENT-LOG | Model, batch and OEM recorded in asset register |
| 2 | Confirm disconnect type vs datasheet | Quality engineer | OEM datasheet (PDF) — sourced via the OEM portal or RFQ | DCONF-CONFIRM | Thermal / magnetic / combined match signed off |
| 3 | Pre-isolation safety checks & LOTO | Site electrician | ISO-PROC-VER-03 | LOTO-PROC-VER-03 | Zero voltage confirmed, lock applied, ambient logged |
| 4 | Perform the agreed disconnect test | Qualified test laboratory | Applicable SPD standard, OEM test specification and calibrated equipment | SURGE-EVENT-TRACE | Results meet the documented acceptance criteria for the actual SPD model. A universal 6 kV / 3 kA Type 2 disconnect threshold is not asserted. |
| 5 | Measure post-event isolation resistance | Test bench operator | Megohmmeter calibration cert | IR-MEASURE-SHEET | Reading ≥ datasheet end-of-life isolation value, measured at 500 V DC |
| 6 | Inspect visual disconnect indicator | Quality engineer | OEM datasheet fault state legend | FLAG-CHECK-PHOTO | Indicator colour matches OEM fault state |
| 7 | Record verdict, quarantine or return to service | Quality engineer | SPD-IDENT-LOG, IR-MEASURE-SHEET | VERDICT-FORM | PASS or FAIL recorded and unit physically tagged |
| 8 | Update maintenance log & notify IoR | Documentation lead | VERDICT-FORM, SURGE-EVENT-TRACE | ASSET-REG-UPDATE | Log filed, importer of record emailed |
spd-disconnect-check-r14-checklist.pdf — printable field checklistSPD-IDENT-LOG-R14.xlsx — SPD identification registerDCONF-CONFIRM-R14.docx — disconnect type confirmation formISO-PROC-VER-03.pdf — pre-isolation safety procedureLOTO-PROC-VER-03.pdf — lockout-tagout recordSURGE-EVENT-TRACE-R14.pdf — surge generator trace fileIR-MEASURE-SHEET-R14.xlsx — isolation resistance logFLAG-CHECK-PHOTO-R14/ — visual indicator photo folderVERDICT-FORM-R14.docx — pass / fail verdict sheetASSET-REG-UPDATE-R14.csv — asset register update export| Phase | Activity | Indicative window |
|---|---|---|
| T0 | Lot receipt at EU warehouse | Day 0 |
| T0+1 | SPD model & datasheet capture (Steps 1-2) | Day 1 |
| T0+2 | Pre-isolation & safety (Step 3) | Day 2 morning |
| T0+2 to T0+3 | Surge test, IR measurement, indicator check (Steps 4-6) | Day 2 PM – Day 3 |
| T0+4 | Verdict, quarantine / return-to-service (Step 7) | Day 4 |
| T0+5 | Asset register update & importer notification (Step 8) | Day 5 |
| Cost slot | Indicative range (EUR) | Notes |
|---|---|---|
| Test bench set-up per lot | INDICATIVE — confirm by RFQ | Surge generator hire, megohmmeter hire |
| Surge generator calibration share | INDICATIVE — confirm by RFQ | Traceability aligned to ISO/IEC 17025 calibration requirements; calibration body selected at RFQ |
| Labour per SPD unit | INDICATIVE — UNCERTAIN (depends on local electrician rate) | Steps 3-7 execution time |
| RMA shipping back to OEM | INDICATIVE — UNCERTAIN (depends on failed-unit count) | Only triggered for FAIL verdicts |
| Documentation handling | INDICATIVE — confirm by RFQ | Filing, asset register updates, IoR email |
All values above are indicative slots only. Hard pricing is UNCERTAIN until a dated quote is requested via the RFQ CTA below.
| Heading | Description | Duty rate | Source |
|---|---|---|---|
| 8533.40 | Electrical resistors (incl. SPD varistor modules) — verify per shipment | PENDING lookup via EU TARIC consultation | WCO Harmonized System explanatory notes, looked up via the EU TARIC consultation tool |
| 8536.30 | Apparatus for protecting electrical circuits (SPD assemblies) | PENDING lookup via EU TARIC consultation | WCO Harmonized System explanatory notes, looked up via the EU TARIC consultation tool |
| 9032.89 | Surge generator test equipment (if re-exported after calibration) | PENDING lookup via EU TARIC consultation | WCO Harmonized System explanatory notes, looked up via the EU TARIC consultation tool |
Disclaimer: HS classifications and duty rates listed above are placeholders marked PENDING. Confirm the correct TARIC sub-heading, any anti-dumping measures and VAT treatment with a licensed customs broker or via the official EU TARIC consultation page before declaring any shipment.
It is the internal element — thermal, magnetic, or combined — that isolates an SPD from the circuit when the device reaches end of life, preventing sustained follow-current and fire risk. Confirm the disconnect design and performance in the actual OEM datasheet and the applicable AC or PV DC SPD standard.
EU-bound PV equipment is exposed to repeated switching transients on the grid side and lightning-induced surges on the DC side; per the IEC 61643-32 PV application guide, a failed disconnect can leave a string permanently connected to a shorted MOV block.
No. Type testing is performed once by an accredited lab against the IEC 61643 series. This guide covers lot-acceptance and maintenance verification on the importer side.
The importer of record is the EU-established entity that assumes customs liability for the goods; on solar projects this is usually the EPC or the asset owner. The EU VAT and customs liability framework is administered under the standard EU customs code; refer to the EC taxation and customs portal for entity-level rules.
AC power SPDs and PV DC SPDs have different applicable product standards and test conditions. Always cross-check the test parameters against the OEM datasheet before running the surge event.
| Claim | Source (with full designation + URL) | File / section |
|---|---|---|
| Choose the product standard for the actual SPD application; no universal Type 2 disconnect test level is established here. | IEC 61643-11 — AC power SPDs; IEC 61643-31 — PV DC SPDs within its scope; IEC 61643-21 — signalling-network SPDs. Confirm the required edition and OEM-approved method in the existing IEC catalogue. | Steps 2 and 4 |
| PV-side SPDs are exposed to switching transients and lightning-induced surges; application guidance is issued separately to the part-11 product standard | IEC 61643-32, "Low-voltage surge protective devices — Part 32: Surge protective devices connected to photovoltaic installations — Selection and application principles" — cited by full designation IEC 61643-32; catalogue listing via IEC Webstore (deep /publication/NNNN ID not cited; edition + title given verbatim per the builder convention) | FAQ section |
| Importer of record is the EU entity assuming customs liability for the goods | EU customs framework, administered via the European Commission taxation and customs portal (look up the active legal base on the EC site at RFQ time) | Step 8 — ASSET-REG-UPDATE-R14.csv |
| Test equipment traceability may be aligned with ISO/IEC 17025 calibration requirements | ISO/IEC 17025, "General requirements for the competence of testing and calibration laboratories" — cited by full designation ISO/IEC 17025; catalogue search via ISO standards search (bot-walled; deep /standard/NNNNN.html URL not cited; designation given verbatim) | Cost slot — surge generator calibration |
| HS heading 8536.30 covers apparatus for protecting electrical circuits | WCO Harmonized System explanatory notes, consulted via the EU TARIC consultation page | HS / duty block |
| HS heading 8533.40 covers electrical resistors including varistor modules | WCO Harmonized System explanatory notes, consulted via the EU TARIC consultation page | HS / duty block |
R13 fix note: the IEC Webstore home URL and the ISO standards search URL above are catalogue / lookup references from the evidence pack; confirm before use. Per the builder convention, IEC and ISO standards are cited by full designation + edition/year + issuer in the surrounding text; deep /publication/NNNN or /standard/NNNNN.html IDs are not guessed because >15 IEC deep IDs have returned 404 in past verifications. The EU TARIC consultation URL above is the public HS heading lookup tool.