Tradvolt › Knowledge Base › Process / SOP › ESS SAT — CN→TR
Document type: Process / SOP | Vertical: Solar Balance-of-System | Trade lane: CN → TR | Scope: Energy Storage System (BESS) site acceptance testing
Verdict (see §6, §9): SAT requires ~7 active on-site days after CN→TR sea transit; HS code and import duty/VAT are PENDING customs broker confirmation against the Republic of Türkiye Ministry of Trade tariff portal. Reference equipment family: CATL EnerC series containerised LFP BESS paired with a Sungrow SG3125HV-MV PCS (model-level torque, SOC window and DC-bus limits below are model assumptions to be re-confirmed against the OEM service manual revision at RFQ).
| Field | Value |
|---|---|
| Equipment / location | Lithium-ion BESS (EnerC container family) + Sungrow SG3125HV-MV PCS, TR project site |
| Horizon | ~7 active SAT days post-transit, plus 25–35 days CN→TR sea transit |
| Evidence date | Source reference date: 2026-09-22 |
| Duty / HS | PENDING — broker confirmation via Türkiye Ministry of Trade tariff portal |
| Limitation | Specific torque, SOC and voltage limits are model assumptions; OEM manual revision must be confirmed at RFQ |
This Standard Operating Procedure (SOP) defines how Tradvolt executes a Site Acceptance Test (SAT) for an Energy Storage System (ESS) delivered on the China → Türkiye trade lane. It standardises the responsibilities, inputs, outputs, and gating criteria so that the SAT is reproducible across vertical solar BoS projects. [Claim | Src: Tradvolt internal SOP template (cross-referenced with public Tradvolt process documentation) | URL: https://tradvolt.com/guides/ | reference date: 2026-09-22]
The procedure aligns with the OEM service-manual requirement that final acceptance, including charge/discharge functionality, be witnessed on-site at the BESS location rather than at the factory. For the reference configuration, the CATL EnerC container service manual and the Sungrow SG3125HV-MV PCS installation and commissioning manual govern the on-site checks. [Claim | Src: CATL ESS product family page | URL: https://www.catl.com/en/ess/ | reference date: 2026-09-22] [Claim | Src: Sungrow product and service portal | URL: https://www.sungrowpower.com/en | reference date: 2026-09-22]
In scope: Containerised or skid-mounted lithium BESS (reference: CATL EnerC series), PCS (reference: Sungrow SG3125HV-MV), BMS, MV/LV interface cabinets, SCADA gateway, and associated cabling accessories delivered as Solar Balance-of-System equipment. The cell-level safety expectations align with IEC 62619 (Secondary cells and batteries containing alkaline or other non-acid electrolytes — Safety requirements for secondary lithium cells and batteries, for use in industrial applications), and the overall ESS vocabulary/terminology aligns with IEC 62933-1 (Electrical energy storage systems — Part 1: Vocabulary). [Claim | Src: IEC 62933-1 vocabulary for EES terminology | URL: https://webstore.iec.ch/ | reference date: 2026-09-22] [Claim | Src: IEC 62619 industrial lithium cell/battery safety | URL: https://webstore.iec.ch/ | reference date: 2026-09-22]
Out of scope: PV module flash tests, inverter DC-side commissioning handled under a separate SOP, and civil engineering acceptance.
| Step # | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Confirm SAT scope, equipment list (incl. CATL EnerC container SN, Sungrow SG3125HV-MV firmware), contractual SAT window, and issue the SAT plan. | PM | Contract / SAT clause | TVT-SAT-PLAN-v1.0.pdf | Signed SAT plan received from CR and OEM. |
| 2 | Witness or verify pre-shipment inspection (PSI) at the OEM facility in China prior to container sealing. | QA | PSI checklist | TVT-PSI-REPORT.pdf | PSI report countersigned; seal number recorded. |
| 3 | Verify Chinese export customs pre-clearance declaration against the Bill of Lading and packing list. | LC | Commercial invoice, packing list | TVT-CN-EXPORT-DECL.pdf | Declaration reference archived; goods permitted to gate out. |
| 4 | Confirm booking, container seal number, and enable milestone tracking across the CN→TR sea lane. | LC | Booking confirmation | TVT-TRACK-LOG.xlsx | Vessel ETA confirmed and tracking link active. |
| 5 | Prepare the TR import pre-arrival dossier with the customs broker; flag the ESS equipment for HS classification (see §10). | LC | CI, PL, BL, OEM certificate | TVT-TR-IMPORT-DOSSIER.pdf | Broker confirms dossier completeness; reference number logged. |
| 6 | Verify civil, electrical, fire-suppression, ventilation, and SCADA-network readiness at the BESS site. | SE | Site readiness checklist | TVT-PREREADY-CHECK.pdf | All site prerequisites checked on the pre-readiness form. |
| 7 | Execute visual and mechanical inspection against the CATL EnerC service manual checklist (torque marks, labelling, IP integrity). | SE | OEM SAT checklist, ISO 2859-1 AQL table | TVT-VMI-REPORT.pdf | All visual items ticked; deviations logged as punch items. |
| 8 | Run the OEM-mandated charge and discharge cycles with the CL per the Sungrow SG3125HV-MV commissioning manual; capture SCADA telemetry traces and cell-level logs. | CL | OEM PCS parameter file | TVT-FUNC-TEST.xlsx | Cycles completed; logged parameters meet OEM acceptance band. |
| 9 | Verify grid-support functions (frequency ride-through, anti-islanding, voltage/reactive control) per the relevant grid code. | CL | Grid-code compliance sheet | TVT-GRID-COMPLIANCE.pdf | All grid-support tests pass; trace evidence attached. |
| 10 | Apply AQL sampling per ISO 2859-1 to cable accessories, labels, documentation sets, and cosmetic surfaces. | QA | ISO 2859-1 table | TVT-AQL-SAMPLE.pdf | Sampling decision recorded (Accept / Reject / Continue). |
| 11 | Compile and close the punch-list of non-conformities; secure re-test evidence for any open items. | PM | Punch-list register | TVT-PUNCH-LIST.pdf | Punch-list status = CLOSED or formally documented as deferred. |
| 12 | Obtain signatures on the SAT report and archive the full deliverable dossier to the customer O&M team. | QA | SAT report draft | TVT-SAT-REPORT-FINAL.pdf | Signed SAT certificate archived; O&M hand-over acknowledged in writing. |
| Phase | Activity | Indicative duration | Predecessor |
|---|---|---|---|
| A | SAT plan & scope (Steps 1) | 1 day | Contract handover complete |
| B | Pre-shipment (Step 2) | 2 days at OEM site | A closed |
| C | CN export + transit (Steps 3–4) | 25–35 days (sea CN→TR) | B signed |
| D | TR import dossier (Step 5) | 3 days pre-arrival | BL issued in C |
| E | On-site pre-readiness (Step 6) | 1 day | Civil works handover complete |
| F | On-site SAT execution (Steps 7–10) | 3 days | D delivered, E cleared |
| G | Punch-list + sign-off (Steps 11–12) | 2 days | F complete |
| Total indicative | ~7 days active + sea transit | — | |
All transit durations above are indicative; vessel cut-offs and customs windows may shift the on-site SAT window. Sea-transit lead-time figures are not hard-coded because they depend on carrier schedule, port pair, and the Incoterms 2020 risk transfer point. [Claim | Src: ICC Incoterms 2020 | URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | reference date: 2026-09-22]
The numerical limits in this section are model assumptions for the reference configuration (CATL EnerC container + Sungrow SG3125HV-MV PCS) and must be re-validated against the OEM service-manual revision in force at the time of SAT. Tradvolt does not assert these as universal limits.
| Parameter | Assumed limit | Source / status |
|---|---|---|
| DC bus voltage window (PCS) | 1,000–1,500 V DC (Sungrow SG3125HV-MV class) | [Model assumption | Sungrow product family | URL: https://www.sungrowpower.com/en | reference date: 2026-09-22] |
| Battery SOC operating window | 5%–95% SOC during commissioning cycles | [Model assumption | CATL EnerC operating envelope | URL: https://www.catl.com/en/ess/ | reference date: 2026-09-22] |
| Torque — DC power cable lugs | Per OEM manual section (Nm value to be re-confirmed against revision) | [Model assumption | CATL service manual | URL: https://www.catl.com/en/ess/ | reference date: 2026-09-22] |
| Torque — battery module busbars | Per OEM manual section (Nm value to be re-confirmed against revision) | [Model assumption | CATL service manual | URL: https://www.catl.com/en/ess/ | reference date: 2026-09-22] |
| Cell safety reference | UN 38.3 (ST/SG/AC.10/11/Rev.7); IEC 62619 | [Claim | UNECE UN Manual of Tests and Criteria | URL: https://unece.org/transport/dangerous-goods/un-manual-tests-and-criteria | reference date: 2026-09-22] [Claim | IEC 62619 catalogue | URL: https://webstore.iec.ch/ | reference date: 2026-09-22] |
Each item below corresponds to a literal filename in Tradvolt's document repository. Customers may request the package as a single ZIP via the RFQ flow for audit purposes.
The slots below are indicative and not a quotation. Final figures depend on vessel schedule, Incoterms 2020 point of delivery, and TR customs duty assessment (see §10).
| Field | Value |
|---|---|
| Equipment | Lithium-ion BESS (CATL EnerC container family) with Sungrow SG3125HV-MV PCS, BMS, MV/LV cabinet — solar BoS |
| HS code (equipment/parts) | PENDING — lookup against the Turkish customs tariff (Gümrük Tarife İstatistik Pozisyonu) via the Republic of Türkiye Ministry of Trade portal; cross-reference with the WCO Harmonized System nomenclature for the exact configuration. [Claim | Src: Republic of Türkiye Ministry of Trade | URL: https://www.trade.gov.tr/ | reference date: 2026-09-22] |
| Applicable duty rate | PENDING — lookup; rate depends on the exact HS heading/subheading determined for the shipment. |
| VAT / other levies | PENDING — lookup against the current VAT rate and any exempted/special-regime treatment published by the official customs portal. |
| Official portal consulted | Republic of Türkiye Ministry of Trade — trade.gov.tr |
| Disclaimer | Tradvolt does not hard-code duty rates. Final duty figures must be confirmed with the appointed customs broker against the actual HS classification of the equipment at the time of import. Trade remedies, anti-dumping, or safeguard measures may apply; these are not captured in this SOP. |
Reference for trade documentation handling: ICC Incoterms 2020 risk-transfer clauses (DAP / CIP most common for SAT-liability deliveries). [Claim | Src: ICC Incoterms 2020 | URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | reference date: 2026-09-22]
Send your project scope (equipment list including BESS container model and PCS SKU, Incoterms 2020 term, CN port, TR port/site) and Tradvolt will reply within 48 hours with a SAT execution plan and a fixed quote.
Reader-facing CTA: Request Quote — replies in 48h