CROSS-STANDARD public interest · Solar PV inverter

China-to-Oman 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 Oman DGSM / MoCIIP standards screening, IEC 62109 safety evidence, OPWP and Nama grid-connection expectations, Sahim rooftop solar routes, 50 Hz settings, and China GB/T 37408 / GB/T 19964 baselines.

Dataset 2026-06-11 Last verified 2026-06-14 6 rows

GAP MATRIX

Compliance Gap Matrix

Gap matrix
Compliance item Common China baseline Oman (DGSM / OPWP / Nama) Gap / action Source + verification date
China GB/T 37408 / GB/T 19964 Baseline Crosswalk The common China baseline includes GB/T 37408-2019 for grid-connected PV inverter technical requirements and GB/T 19964-2024 for PV power-station access to the power system. NB/T 32004-2018 and utility-specific acceptance records may also appear in Chinese files. These are useful starting points but are not Oman approvals.GB/T 37408-2019
GB/T 19964-2024
NB/T 32004-2018
State Grid or China Southern Power Grid project acceptance records where applicable		 For Oman, the China technical baseline should be translated into an Oman-facing crosswalk rather than treated as direct approval. The crosswalk should map China inverter performance, grid-support, anti-islanding, protection, safety, labeling, manual, and commissioning evidence to DGSM / MoCIIP standards screening, IEC 62109 evidence, OPWP / OETC / Nama grid review, and Sahim rooftop requirements where applicable.DGSM / MoCIIP standards route for the product scope
IEC 62109-1:2010
IEC 62109-2:2011
OPWP / OETC / Nama grid-connection requirements
Sahim rooftop solar requirements where applicable		 Build a clause-by-clause matrix that identifies accepted evidence, missing Oman evidence, edition mismatches, model-family gaps, firmware-setting gaps, label and manual gaps, and project-commissioning evidence that must be generated locally.[INFORMATIONAL] Use GB/T 37408-2019 and GB/T 19964-2024 as a China baseline, then map them to Oman standards, safety, grid, rooftop, settings, and commissioning requirements. State Administration for Market Regulation / Standardization Administration of China public standards platform2026-06-14 · unverified
DGSM / MoCIIP Standards Screening for PV Inverters China-origin files may include GB/T 37408 reports, GB/T 19964 project-grid evidence, NB/T 32004 reports, CQC or CGC certificates, IEC CB certificates, Chinese labels, and Chinese manuals. These are technical inputs but do not by themselves prove Oman standards applicability or import acceptance.GB/T 37408-2019
GB/T 19964-2024
NB/T 32004-2018
IEC CB Scheme reports where held		 Oman standards and conformity questions should be screened through the Ministry of Commerce, Industry and Investment Promotion and its Directorate General for Standards and Metrology for the exact inverter model, HS code, voltage class, communications options, and import or project route. Oman Ministerial Decree 190/2021 issued the Technical Regulation for the Conformity System under MoCIIP; product-specific applicability still needs confirmation for the exact scope. A standard may be voluntary in general but become mandatory when cited by Oman regulation, customs practice, tender, grid-connection approval, buyer contract, financing, insurance, or project-owner requirements.MoCIIP / DGSM applicable Oman standards and technical regulations
Oman Ministerial Decree 190/2021: Technical Regulation for the Conformity System (MoCIIP)
DGSM standards and metrology conformity route for the exact product scope
Project tender or buyer-specified PV inverter standards		 Prepare an Oman standards-applicability note, model-family list, HS-code note, certificates and test reports, critical-component list, nameplate and manual samples, and a clause crosswalk showing which China or IEC documents support the Oman route.[INFORMATIONAL] Treat DGSM / MoCIIP applicability, including any route under Ministerial Decree 190/2021, as a product-scope question. China reports should be mapped to the Oman import, tender, and project route before shipment. Oman Ministry of Commerce, Industry and Investment Promotion (MoCIIP)2026-06-14 · unverified
50 Hz Grid Settings and Protection Windows China also uses nominal 50 Hz grids, and Chinese PV inverter reports commonly include 50 Hz operating data under GB/T 19964-2024, GB/T 37408-2019, and NB/T 32004-2018. That overlap does not prove that Oman trip windows, reconnection behavior, or project-specific settings are loaded.GB/T 19964-2024
GB/T 37408-2019
NB/T 32004-2018		 Oman operates on a nominal 50 Hz power system. For PV inverters, the compliance issue is not only the nominal frequency, but the utility-approved frequency and voltage trip windows, ride-through behavior, reconnection timing, ramp rates, power-factor or reactive-power settings, and commissioning evidence required by OPWP, OETC, Nama, the distribution company, or the project owner.Oman grid-code and connection requirements for voltage and frequency behavior
OPWP / OETC / Nama project-specific protection and operating settings
Distribution-company commissioning settings for rooftop or distribution-connected PV		 Provide a firmware-country profile, password or lock-control procedure, grid-setting export, factory default comparison, site commissioning record, and evidence that the installed inverter matches the Oman-approved voltage and frequency protection profile.[INFORMATIONAL] 50 Hz compatibility is necessary but not enough. Confirm Oman-approved protection windows, firmware profile, and commissioning records for the actual project. Oman Electricity Transmission Company (OETC)2026-06-14 · unverified
OPWP / OETC / Nama Grid-Connection Review China grid files commonly cite GB/T 19964-2024 for PV power-station grid connection, GB/T 37408-2019 for grid-connected PV inverter technical requirements, NB/T 32004-2018, and State Grid or China Southern Power Grid acceptance records. These records can support engineering review but do not authorize connection to the Oman grid.GB/T 19964-2024
GB/T 37408-2019
NB/T 32004-2018
Chinese utility acceptance records		 Utility-scale or network-connected PV projects in Oman require project-specific grid review through the applicable procurement, transmission, or distribution route. OPWP procurement documents, OETC transmission requirements, and Nama distribution-company connection requirements can require inverter capability evidence for active and reactive power control, voltage and frequency ride-through, protection coordination, power quality, telemetry, commissioning tests, and site-specific settings.OPWP project procurement and power-purchase requirements where applicable
Oman Electricity Transmission Company grid-code and connection requirements where applicable
Nama distribution-company connection requirements
Project-specific protection, power-quality, telemetry, and commissioning requirements		 Separate product capability from project grid approval. The Oman file should include a grid-code matrix, firmware setting sheet, protection study inputs, reactive-power and power-quality evidence, ride-through data where requested, telemetry interface details, commissioning procedure, and final site settings.[INFORMATIONAL] Oman grid acceptance is project-specific. China GB/T grid reports should be translated into the OPWP / OETC / Nama study package and final settings file. Oman Power and Water Procurement Company (OPWP)2026-06-14 · unverified
IEC 62109 Safety Evidence for PV Power Converters Chinese suppliers may already hold IEC 62109 CB certificates, CQC or CGC voluntary certificates, GB/T 37408 performance reports, or internal safety files. The Oman file should verify exact model, firmware, topology, isolation, residual-current protection, environmental rating, factory address, and critical components.IEC 62109-1:2010
IEC 62109-2:2011
GB/T 37408-2019		 IEC 62109-1:2010 is the international baseline for general safety requirements for power converters used in photovoltaic power systems, and IEC 62109-2:2011 covers particular inverter requirements used with Part 1. For Oman, IEC 62109 evidence may be required by DGSM / MoCIIP standards screening, project tenders, OPWP or Nama connection review, EPC procurement, insurers, financiers, or buyers even where a public source does not prove a blanket mandatory certificate for every PV inverter.IEC 62109-1:2010
IEC 62109-2:2011
IEC CB Scheme certificate and test report where accepted by the Oman route
Oman project specifications that cite IEC 62109		 Do not submit a generic IEC certificate alone. Provide the CB certificate, full test reports, national-deviation notes if any, model-variant table, critical-component list, safety labels, warnings, and manuals tied to the exact Oman model and project route.[INFORMATIONAL] IEC 62109 is a core safety-evidence package when requested, but it is not by itself an Oman import clearance, grid approval, or Sahim project approval. International Electrotechnical Commission (IEC)2026-06-14 · unverified
Sahim Rooftop Solar and Nama Distribution Connection China domestic distributed-PV acceptance records, GB/T 37408 tests, GB/T 19964 evidence, IEC 62109 certificates, and factory setting sheets can support due diligence but do not prove Sahim enrollment or Nama distribution-company acceptance.GB/T 37408-2019
GB/T 19964-2024
IEC 62109-1 / IEC 62109-2
Chinese distributed-PV utility acceptance records		 Oman's Sahim rooftop-solar route is a project and distribution-connection process, not only a product standard. The inverter package may need to support customer application documents, distribution-company technical review, qualified installer work, metering arrangements, export-limitation or anti-islanding settings where required, labels, manuals, and commissioning records for the exact rooftop configuration.APSR Sahim rooftop solar programme requirements where applicable
Nama distribution-company connection process
Applicable metering, anti-islanding, protection, labeling, and commissioning requirements
Project-specific customer or installer documentation		 Before shipment, confirm whether the installation is Sahim rooftop, another behind-the-meter route, or a larger distribution-connected project. Align inverter model, firmware profile, anti-islanding, export control, meter interfaces, labels, manuals, installer documentation, and commissioning checklist with that route.[INFORMATIONAL] Sahim is a deployment and connection route. The inverter file should support the customer, installer, metering, anti-islanding, and Nama distribution-review process. Oman Authority for Public Services Regulation (APSR)2026-06-14 · unverified

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