Process / SOP · Hybrid Inverter · CN→MY Corridor

Inverter Insulation-Resistance Test — CN→MY Shipment SOP

Verdict. Every Deye SUN-5/6/8/10/12K-SG04LP3-EU unit leaving the CN dispatch warehouse for Malaysia must pass an insulation-resistance (IR) test at 500 V DC (class I) or 1000 V DC (class II) with a ≥ 60 s hold and a resistance reading of ≥ 1 MΩ (basic insulation) or ≥ 100 MΩ (reinforced insulation) before the customs dossier can be lodged. Owners: QC Engineer (test execution), QC Supervisor (co-sign), Export Coordinator (customs dossier), Logistics Coordinator (FIATA multimodal carrier hand-over). Horizon: D − 2 dispatch pack → D − 1 test execution → D 0 export lodging → D + 4 to D + 10 arrival at the MY site. Evidence date: 2026-09-22. Limitation: figures are working references; MY duty/GST and CN export duty rows are flagged PENDING and must be re-verified on the JKDM / MyGov and GACC portals at the time of each shipment.

1. Scope and applicability

This SOP applies to Ningbo Deye Inverter Technology Co., Ltd. — SUN-5/6/8/10/12K-SG04LP3-EU hybrid inverters leaving the CN dispatch warehouse and entering Malaysia via the CN→MY trade corridor. The Deye product page is the canonical model reference: https://www.deyeinverter.com/product/hybrid-inverter-1/sun5-6-8-10-12ksg04lp3.html. The IR test is a safety verification, not a performance test, and is performed on every unit that has been powered-up or repaired before re-shipping.

Claim: This SOP covers the Deye SUN-5/6/8/10/12K-SG04LP3-EU family. | URL: https://www.deyeinverter.com/product/hybrid-inverter-1/sun5-6-8-10-12ksg04lp3.html | accessed 2026-09-22.

Claim: Tradvolt sources and ships China-made green-tech equipment on CN→MY corridors. | URL: https://tradvolt.com/ | accessed 2026-09-22.

2. Normative references

3. Decision table — verdict in numbers

ParameterClass I (basic insulation)Class II (reinforced insulation)Source
Test voltage (DC)500 V DC1000 V DCDeye SUN-5/6/8/10/12K-SG04LP3-EU Service Manual + IEC 62109-1 clause on dielectric/insulation testing. Manual: link; standard: IEC catalogue query. Accessed 2026-09-22.
Hold time≥ 60 s≥ 60 sDeye Service Manual (revision TBC at RFQ) — model assumption until confirmed.
Pass threshold≥ 1 MΩ≥ 100 MΩDeye Service Manual pass criteria + IEC 62109-1 minimum insulation-resistance table.
HS heading8504.40 — Static converters (verify on the destination customs portal at the time of shipment)WCO HS Nomenclature 2022, Chapter 85 Note 3 / heading 8504.40: WCO HS 2022. Accessed 2026-09-22.
CN export lodgementGACC export declarationhttp://english.customs.gov.cn. Accessed 2026-09-22.
MY import lodgementJKDM via MyGovhttps://www.mygov.gov.my. Accessed 2026-09-22.
Multimodal doc setFWB / FCR per FIATA ruleshttps://fiata.org/. Accessed 2026-09-22.

4. Step sequence

Step #ActionOwnerInput docOutput docDone-when
1Receive dispatch pack (PO line, packing list, Test Plan, prior IR record if any).QC Engineerdispatch-pack.pdfpack-receipt-ack.xlsxAll line items reconciled against the PO; serial numbers logged.
2Confirm model (Deye SUN-5/6/8/10/12K-SG04LP3-EU), rated DC voltage and rated AC voltage from the rating plate and OEM manual.QC EngineerDeye Service Manual (link)model-confirmation.mdModel code and ratings transcribed; serial number matches the Test Plan.
3Isolate the inverter: remove DC input, remove AC output, disconnect any communication cables and external PE bonding.QC EngineerDeye Service Manual isolation procedureisolation-log.mdVoltage checks confirm zero residual on DC and AC terminals.
4Verify ambient temperature (15–35 °C typical) and RH, prepare PPE (insulated gloves, face shield) per Risk Assessment and IEC 62477-2 environmental preconditions.HSE Officer + QC EngineerRisk Assessment ra-ir-test.docx; IEC 62477-2 (catalogue)env-and-ppe-check.xlsxConditions recorded; PPE worn; pre-job safety briefing completed.
5Calibrate-check the megohmmeter against a known reference; confirm calibration certificate is in date.QC EngineerCalibration certificate megger-cal-*.pdfmegger-check-record.mdMegger reads within tolerance of reference; certificate < 12 months old.
6Connect leads per Deye Service Manual wiring diagram: shorted L/N/PE (or DC+/DC− and PE for DC-coupled paths) to the positive lead; chassis ground to the negative lead.QC EngineerDeye Service Manual wiring diagram (link)lead-connection-photo.jpgLead layout matches the OEM wiring diagram; photo filed.
7Apply test voltage — 500 V DC for Class I or 1000 V DC for Class II per IEC 62109-1 and Deye Service Manual — and hold for ≥ 60 s.QC EngineerDeye Service Manual test voltage table + IEC 62109-1 (catalogue)test-run.logVoltage and time held without breakdown; no trip of the instrument.
8Read IR value at the end of hold time and compare against the pass threshold: ≥ 1 MΩ (basic) or ≥ 100 MΩ (reinforced) per Deye Service Manual + IEC 62109-1.QC EngineerDeye Service Manual pass criteria + IEC 62109-1ir-test-sheet.pdfValue recorded in MΩ on the Test Sheet; pass/fail flagged.
9Discharge the unit, restore grounds, and de-energise the megohmmeter; visual inspection for arc marks.QC Engineer—post-test-visual.mdTerminals discharged to < 5 V; no arc marks; area restored.
10Engineer signs Test Sheet; Supervisor co-signs; archive to project folder and attach to the shipment file.QC Supervisorir-test-sheet.pdfsigned-ir-pack.pdfTwo signatures present; PDF archived under project ID.
11Prepare commercial invoice, packing list, COO, Incoterms 2020 term (ICC rules page), and submit to broker for CN export (GACC) + MY import (JKDM / MyGov) declarations.Export Coordinatorsigned-ir-pack.pdf, Proforma Invoicecustoms-dossier.zipBroker lodges declarations on GACC and JKDM / MyGov portals; references recorded.
12Carrier hand-over per FIATA multimodal rules (FIATA); share AWB or sea waybill with receiver; confirm arrival in MY and close the loop.Logistics CoordinatorFIATA multimodal doc setas-shipped-record.pdfReceiver confirms arrival; POD filed; project tracker closed.

5. Document checklist (literal filenames)

6. Timeline and dependencies

Day (relative)MilestoneDependency
D − 2Dispatch pack received and reconciled.Project Coordinator issues PO and Test Plan.
D − 2Calibration certificate confirmed in date.QC Engineer checks megger-cal-YYYY-MM.pdf.
D − 1IR test executed on all units; signed IR Pack archived.Test Plan released; PPE available; area clear.
D 0Customs dossier handed to broker; export lodged on GACC (link).Signed IR Pack + Commercial Invoice ready.
D + 1 to D + 4Carrier hand-over; AWB/waybill issued; consignment departs.Broker confirmation; FIATA multimodal booking confirmed (FIATA).
D + 4 to D + 10 (indicative)Import lodgement on JKDM / MyGov (link); duties/GST paid; delivery to MY site.HS code, COO and Incoterms correct; duties cleared.

7. Cost slots

The cost figures below are indicative placeholders for budgeting only. Real values are returned in the 48-hour RFQ response via the live RFQ form at /rfq/.

8. HS code, duties and customs

ItemFieldValueSource
Deye SUN-5/6/8/10/12K-SG04LP3-EU (static converters)HS code8504.40 — Static converters (commonly applied heading; verify against the destination customs portal at the time of shipment).WCO HS Nomenclature 2022, Chapter 85, heading 8504.40: WCO HS 2022. Accessed 2026-09-22.
Deye SUN-5/6/8/10/12K-SG04LP3-EU — MY import duty rateRatePENDING — lookupRe-verify on JKDM / MyGov at shipment time: https://www.mygov.gov.my. Accessed 2026-09-22.
Sales tax / GSTRatePENDING — lookupRe-verify on JKDM / MyGov at shipment time: https://www.mygov.gov.my. Accessed 2026-09-22.
CN export formalitiesStatusDeclared on the General Administration of Customs of China (GACC) portal.http://english.customs.gov.cn. Accessed 2026-09-22.
MY import lodgementPortalRoyal Malaysian Customs (JKDM) via the MyGov portal.https://www.mygov.gov.my. Accessed 2026-09-22.
Disclaimer. HS classifications and duty rates are jurisdiction-specific and change periodically. Tradvolt provides the HS heading above (8504.40, WCO HS Nomenclature 2022) as a working reference; the MY duty, GST and any excise lines are intentionally left as PENDING — lookup and must be confirmed against the JKDM / MyGov portal at the time of shipment. Tradvolt does not provide legal or fiscal advice.

9. Risk and non-conformance

10. RFQ

The RFQ form at /rfq/ is the only live TradVolt endpoint for a priced offer on a CN→MY shipment that includes the IR test, documentation and customs clearance. Standard reply time: within 48 hours during business days. The IR Test Checklist PDF is also issued with the RFQ reply — there is no separate public download path; the form is the actual endpoint for both the quote and the checklist.

Request Quote (RFQ form — live endpoint) IR Test Checklist — request via RFQ (PDF on reply)