CROSS-STANDARD public interest · Solar PV inverter
China-to-Cambodia Solar PV Inverter Compliance Gap Matrix
AI-compiled from official public sources — cross-checked by multiple AI models, not human-verified. Informational only; see disclaimer. Public-interest, source-linked comparison of common China solar PV inverter documentation against Cambodia ISC conformity requirements, EAC (Electricity Authority of Cambodia) licensing and grid-connection rules, EDC (Electricité du Cambodge) utility connection specifications, IEC 62109-1/-2 safety evidence, IEC 62116 anti-islanding, IEC 62920 / IEC 61000-series EMC, 50 Hz 230/400 V grid settings, and Cambodian Standard (CS) / IEC adoption context — versus China GB/T 37408-2021, NB/T 32004, and GB/T 19964-2024 baselines.
Dataset 2026-06-11
Last verified 2026-06-14
4 rows
GAP MATRIX
Compliance Gap Matrix
| Compliance item | Common China baseline | Cambodia (ISC / EAC / EDC) | Gap / action | Source + verification date |
|---|---|---|---|---|
| EMC — IEC 62920 and IEC 61000-series for PV Inverters — EAC / ISC Cambodia Requirements | Chinese PV inverter EMC is assessed under GB/T 37408-2021 (Technical Requirements for Photovoltaic Grid-Connected Inverters), which includes EMC test requirements aligned with China's domestic framework. GB/T 37408 EMC testing is conducted at CNAS-accredited Chinese laboratories. While IEC 62920 draws on IEC 61000-series methods also referenced in Chinese domestic standards, GB/T 37408 EMC test scope and referenced limits are not harmonised with IEC 62920 and IEC 61000-3-2 as required by EAC Cambodia project submissions. Chinese EMC certificates based solely on GB/T 37408 are not accepted as IEC 62920 or IEC 61000-3-2 compliance evidence for Cambodia project submissions.GB/T 37408-2021 — 光伏并网逆变器技术要求 (Technical Requirements for Photovoltaic Grid-Connected Inverters) — includes EMC test requirements | Cambodia's standards body, the Institute of Standards of Cambodia (ISC), develops and adopts Cambodian Standards (CS) that progressively align with IEC. For solar PV inverters, EAC grid-connection technical requirements reference IEC 62920 (Photovoltaic power generating systems — EMC requirements and test methods for power conversion equipment) and the IEC 61000-series (particularly IEC 61000-3-2 harmonic current emission limits) as the applicable EMC framework. IEC 62920 is the dedicated EMC standard for PV power conversion equipment. No standalone ISC-specific EMC Technical Regulation for solar inverters has been separately enacted — EMC evidence requirements are embedded in the EAC grid-connection and project approval process. ILAC-accredited laboratory test reports are expected for project submissions.IEC 62920 — Photovoltaic power generating systems — EMC requirements and test methods for power conversion equipment IEC 61000-3-2 — Electromagnetic compatibility — Limits for harmonic current emissions (equipment with input current up to 16 A per phase) ISC (Institute of Standards of Cambodia) CS standards adopting IEC — verify adopted EMC standards at isc.gov.kh EAC grid-connection project approval — EMC evidence requirements embedded in project review |
Chinese GB/T 37408 EMC testing does not satisfy Cambodia EAC project requirements for IEC 62920 and IEC 61000-3-2 evidence. Exporters should obtain: (a) IEC 62920 EMC type-test report from an ILAC-accredited laboratory for the specific inverter model; (b) IEC 61000-3-2 harmonic current emission test report. These reports should be specific to the inverter model and power rating being supplied to Cambodia. Where harmonic test results were obtained under Chinese grid conditions (220/380 V), consider whether retesting under Cambodia grid conditions (230/400 V, 50 Hz) is required by the EAC project reviewer or EDC.[INFORMATIONAL] Chinese GB/T 37408 EMC certificates do not satisfy Cambodia EAC/ISC requirements for IEC 62920 and IEC 61000-3-2 evidence. Obtain IEC 62920 and IEC 61000-3-2 type-test reports from an ILAC-accredited laboratory for the specific inverter model before project submission to EAC. Confirm whether Cambodia grid voltage conditions (230/400 V) require retesting compared to test results obtained under 220/380 V Chinese grid conditions. Verify current ISC CS standard adoption status at isc.gov.kh. | Institute of Standards of Cambodia (ISC)2026-06-14 · unverified |
| EAC / EDC Grid-Connection Standards — Anti-Islanding (IEC 62116), IEC 61727, and 230/400 V 50 Hz Cambodia Grid Settings | Chinese grid-connection evidence commonly includes GB/T 19964-2024 (Technical Requirements for Connecting Photovoltaic Power Station to Power System), GB/T 37408-2021 (Technical Requirements for Photovoltaic Grid-Connected Inverters), and NB/T 32004 (inverter technical specifications). These are based on Chinese grid conditions (220/380 V, 50 Hz under GB/T 156) and are not automatically accepted as EAC or EDC grid-connection evidence in Cambodia. Cambodia's grid operates at 230/400 V, 50 Hz — a 5% voltage difference from China's 220/380 V that requires firmware re-validation. Anti-islanding test results from Chinese domestic programmes are not substitutes for IEC 62116 test reports from ILAC-accredited laboratories.GB/T 19964-2024 — 光伏发电站接入电力系统技术规定 (Technical Requirements for Connecting Photovoltaic Power Station to Power System) GB/T 37408-2021 — 光伏并网逆变器技术要求 (Technical Requirements for Photovoltaic Grid-Connected Inverters) GB/T 156 — 标准电压 (Standard voltages) NB/T 32004-2018 — 光伏并网逆变器技术规范 (Technical Specification for Photovoltaic Grid-Connected Inverters) |
The Electricity Authority of Cambodia (EAC) is the independent regulator governing electricity generation, transmission, distribution, and supply in Cambodia. EAC has issued rooftop-solar and grid-connection rules requiring PV inverters to comply with IEC-referenced standards as a condition of grid-connection approval. EDC (Electricité du Cambodge) is the principal utility responsible for operating the grid and processing utility-connection applications. Key inverter grid-connection requirements include: (1) IEC 62116 anti-islanding — inverters must detect loss of mains and disconnect; (2) IEC 61727 — Photovoltaic (PV) systems, characteristics of the utility interface; (3) firmware validated against Cambodia's 230 V single-phase / 400 V three-phase, 50 Hz grid parameters. Cambodia's EAC has at times imposed capacity caps on distributed rooftop solar — policy is evolving and current rules must be verified directly with EAC. The National Solar Park and C&I rooftop sector are primary drivers of inverter demand.IEC 62116 — Utility-interconnected photovoltaic inverters — Test procedure of islanding prevention measures IEC 61727 — Photovoltaic (PV) systems — Characteristics of the utility interface EAC rooftop-solar grid-connection rules (evolving — verify current version at eac.gov.kh) EDC utility connection requirements (verify current version at edc.com.kh) |
Gap: Chinese GB/T grid-connection documents do not satisfy EAC/EDC Cambodia grid-connection requirements. Exporters must prepare: (a) IEC 62116 anti-islanding test report from an ILAC-accredited laboratory; (b) IEC 61727 utility-interface compliance evidence; (c) firmware validation against Cambodia's 230/400 V, 50 Hz grid parameters (not China's 220/380 V). EAC rooftop-solar capacity caps and current grid-connection rules must be confirmed directly with EAC before project submission, as policy has been evolving. EDC utility-connection technical requirements should be confirmed with EDC for the specific project connection point.[INFORMATIONAL] EAC/EDC Cambodia grid-connection requires IEC 62116 anti-islanding and IEC 61727 utility-interface evidence — not covered by Chinese GB/T grid certificates. Re-validate inverter firmware for Cambodia's 230/400 V, 50 Hz grid before testing. EAC rooftop-solar policy and capacity caps are evolving — verify current rules directly at eac.gov.kh and edc.com.kh before project submission. | Electricity Authority of Cambodia (EAC)2026-06-14 · unverified |
| EAC Rooftop Solar / Distributed PV Licensing — Grid-Connection Application and EDC Metering | China does not have a direct equivalent programme. Distributed solar connection in China is governed by National Energy Administration (NEA) distributed PV policies and grid operator (State Grid, Southern Power Grid) connection rules, referencing GB/T 37408-2021, NB/T 32004, and GB/T 19964-2024. Chinese distributed connection approvals are not applicable in Cambodia and do not give any presumption of compliance with EAC or EDC technical requirements. Cambodia's solar market is growing rapidly — with the National Solar Park, C&I rooftop installations, and EDC grid expansion — but the regulatory framework is less mature than China's and evolves more frequently.GB/T 37408-2021 — 光伏并网逆变器技术要求 (Technical Requirements for Photovoltaic Grid-Connected Inverters) NB/T 32004-2018 — 光伏并网逆变器技术规范 (Technical Specification for Photovoltaic Grid-Connected Inverters) GB/T 19964-2024 — 光伏发电站接入电力系统技术规定 (Technical Requirements for Connecting Photovoltaic Power Station to Power System) |
EAC has issued rules governing rooftop and distributed solar PV grid connection in Cambodia. The regulatory framework requires: (a) EAC licensing or registration for grid-connected PV systems above applicable thresholds; (b) EAC technical review of inverter equipment compliance with IEC-referenced specifications; (c) EDC application and net-metering or net-billing arrangement where available; (d) a bidirectional meter and anti-islanding protection as technical prerequisites for grid connection. EAC has periodically imposed capacity caps on new rooftop solar connections — policy is evolving and current cap status must be verified with EAC before project commitment. Chinese PV inverters supplied to Cambodia rooftop or utility-scale projects must comply with EAC technical requirements as a condition of project approval.EAC rooftop-solar and grid-connection rules (evolving — verify current version and capacity cap status at eac.gov.kh) EDC net-metering / net-billing arrangement requirements (verify at edc.com.kh) IEC 62116 — anti-islanding prerequisite for grid connection IEC 61727 — utility interface characteristics |
Gap: Chinese inverters for Cambodia rooftop or utility-scale PV projects must pass EAC technical review and EDC connection acceptance as part of the project approval process. Chinese distributed solar connection approvals do not transfer to Cambodia EAC/EDC requirements. Confirm inverter model IEC compliance evidence, EAC licensing requirements, current capacity cap status for rooftop solar, and EDC connection conditions directly with EAC and EDC before committing product to Cambodia projects.[INFORMATIONAL] EAC licensing and EDC utility connection are separate project-approval gates from any Chinese domestic distributed solar approval. Confirm inverter IEC compliance evidence, current EAC rooftop-solar rules, capacity cap status, and EDC connection conditions directly with EAC and EDC before project submission. EAC policy is evolving — verify at eac.gov.kh and edc.com.kh. | Electricity Authority of Cambodia (EAC)2026-06-14 · unverified |
| IEC 62109-1 / IEC 62109-2 Safety Evidence — ISC (CS Standards) and EAC Cambodia Grid-Connection Requirements | China's primary voluntary standard for PV grid-connected inverter safety is GB/T 37408-2021 (Technical Requirements for Photovoltaic Grid-Connected Inverters), which covers classification, environmental conditions, safety, electrical performance, EMC, and markings. GB/T 37408 is a China domestic standard assessed by CNAS-accredited Chinese laboratories. It shares conceptual safety intent with IEC 62109-1/-2 but is not harmonised with IEC 62109 and is not accepted by EAC Cambodia or ISC as equivalent to IEC 62109 type-test evidence. Chinese inverters for Cambodia must supplement GB/T 37408 certification with IEC 62109-1/-2 type-test reports from ILAC-accredited laboratories.GB/T 37408-2021 — 光伏并网逆变器技术要求 (Technical Requirements for Photovoltaic Grid-Connected Inverters) | The Institute of Standards of Cambodia (ISC) develops Cambodian Standards (CS) by adopting IEC publications. For solar PV inverter safety, CS standards adopt IEC 62109-1 (Safety of power converters for use in photovoltaic power systems — Part 1: General requirements) and IEC 62109-2 (Part 2: Particular requirements for inverters). EAC (Electricity Authority of Cambodia) references IEC 62109-1/-2 safety evidence as part of the technical requirements for PV inverter grid-connection approval in Cambodia. Third-party type-test evidence from an ILAC-accredited laboratory is expected for project submissions to EAC and for utility-scale procurement. Cambodia's growing rooftop C&I and National Solar Park projects follow IEC-aligned safety evidence requirements consistent with ISC CS standard adoption.IEC 62109-2 — Safety of power converters for use in photovoltaic power systems — Part 2: Particular requirements for inverters (adopted as CS / referenced in EAC grid-connection requirements) IEC 62109-1 — Safety of power converters for use in photovoltaic power systems — Part 1: General requirements (implicitly applicable as parent standard) ISC Cambodian Standards (CS) adopting IEC 62109-1/-2 — verify adoption status at isc.gov.kh EAC grid-connection project approval — IEC safety evidence requirements embedded in technical review |
Chinese GB/T 37408 safety certification does not satisfy Cambodia EAC/ISC IEC 62109-2 type-test requirements for PV inverter grid-connection. Exporters must obtain IEC 62109-1/-2 type-test certificates from an ILAC-accredited laboratory covering the specific inverter model or family being supplied to Cambodia. Existing Chinese safety certificates based solely on GB/T 37408 should be supplemented with IEC 62109-1/-2 test reports before submitting equipment documentation for EAC project review or EDC utility-connection approval. Verify current ISC CS adoption status for IEC 62109-1/-2 and current EAC technical requirements directly with the relevant authorities.[INFORMATIONAL] A solar PV inverter holding only Chinese GB/T 37408 certification cannot satisfy Cambodia EAC/ISC IEC 62109-2 grid-connection requirements. Plan for IEC 62109-1/-2 type testing by an ILAC-accredited laboratory before submitting equipment documentation for Cambodia EAC project review or EDC connection. Verify current ISC CS adoption status and EAC technical specification version directly with ISC at isc.gov.kh and EAC at eac.gov.kh before committing to a test programme. | Institute of Standards of Cambodia (ISC)2026-06-14 · unverified |
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SOURCES
Official-source register.
- Institute of Standards of Cambodia (ISC) · accessed 2026-06-14 · unverified · used in 2 rows
- Electricity Authority of Cambodia (EAC) · accessed 2026-06-14 · unverified · used in 2 rows