CROSS-STANDARD public interest · Solar PV inverter

China-to-Iraq 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 Iraq COSQC conformity requirements, Ministry of Electricity (MoE) grid-connection and project specifications, IEC 62109-1/-2 safety evidence, IEC 62116 anti-islanding, IEC 61000/62920 EMC, 50 Hz 230/400 V grid settings, and Iraq's grid-instability context for hybrid/off-grid designs — versus China GB/T 37408, NB/T 32004, and GB/T 19964-2024 baselines.

Dataset 2026-06-11 Last verified 2026-06-14 4 rows

Compliance Gap Matrix

Gap matrix
Compliance item Common China baseline Iraq (COSQC / Ministry of Electricity) Gap / action Source + verification date
EMC — IEC 62920 and IEC 61000 Series for PV Inverters — Iraq COSQC / MoE 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 test methods that also inform Chinese domestic standards, GB/T 37408 EMC test scope and referenced limits are not harmonised with IEC 62920 as applied under COSQC conformity or Iraq MoE / project specifications. Chinese EMC certificates based solely on GB/T 37408 are not accepted as IEC 62920 or IEC 61000-3-2 compliance evidence for COSQC conformity assessment or Iraq 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 Iraq's conformity framework under COSQC references IEC and IQS standards for electromagnetic compatibility (EMC). For solar PV inverters, the relevant EMC standards are: (1) IEC 62920 — Photovoltaic power generating systems: EMC requirements and test methods for power conversion equipment — the dedicated EMC standard for PV inverters covering conducted and radiated emissions as well as immunity; (2) IEC 61000-3-2 — Limits for harmonic current emissions for equipment with input current up to 16 A per phase; (3) IEC 61000-3-3 — Limitation of voltage changes, voltage fluctuations, and flicker. Large-scale solar projects in Iraq tendered by MoE and international project developers reference IEC technical specifications in their procurement documents, which include EMC compliance as part of the inverter equipment package. No standalone COSQC EMC Technical Regulation specifically for solar PV inverters has been identified; EMC requirements are embedded in the IEC-referenced equipment specifications used by project owners and the COSQC conformity assessment framework.IEC 62920 — Photovoltaic power generating systems — EMC requirements and test methods for power conversion equipment (referenced in IEC-aligned Iraq project procurement specifications)
IEC 61000-3-2 — Electromagnetic compatibility — Limits for harmonic current emissions (equipment up to 16 A per phase)
IEC 61000-3-3 — Electromagnetic compatibility — Limitation of voltage changes, voltage fluctuations, and flicker
COSQC conformity assessment framework — cosqc.gov.iq (IQS / IEC alignment for regulated imports)
Chinese GB/T 37408 EMC testing does not satisfy COSQC conformity or Iraq MoE / project EMC requirements for IEC 62920 and IEC 61000-3-2. Exporters should obtain: (a) IEC 62920 EMC type-test report from an ILAC-accredited laboratory covering the specific inverter model; (b) IEC 61000-3-2 harmonic current emission test report for the model. Note: Iraq's grid instability (voltage fluctuations, frequency deviations) may affect EMC performance in the field — consider whether the test conditions adequately represent the operating environment when selecting inverter models for Iraq deployments. These IEC EMC reports should be included in the COSQC pre-shipment inspection documentation package.[INFORMATIONAL] Chinese GB/T 37408 EMC certificates do not satisfy COSQC conformity or Iraq project IEC 62920 and IEC 61000-3-2 requirements. Obtain IEC 62920 and IEC 61000-3-2 type-test reports from an ILAC-accredited laboratory for the specific inverter model and include these in the COSQC pre-shipment inspection documentation. Verify current COSQC Technical Regulations and applicable IQS EMC standards directly with COSQC (cosqc.gov.iq) before finalising the compliance package. International Electrotechnical Commission (IEC)2026-06-14 · unverified
Iraq MoE / COSQC Grid-Connection Standards — Anti-Islanding (IEC 62116), IEC 61727, and 50 Hz / 230 V / 400 V Settings Chinese grid-connection evidence commonly includes GB/T 19964-2024 (Technical Requirements for Connecting Photovoltaic Power Station to Power System, applicable to utility-scale PV via 10 kV and above), NB/T 32004 (inverter technical specifications), and domestic anti-islanding test results. These Chinese grid-connection documents are based on Chinese grid conditions and are not automatically accepted as equivalent under COSQC conformity requirements or Iraq MoE / project procurement specifications. The key parameter difference is voltage: China's grid standard is 220/380 V at 50 Hz under GB/T 156, whereas Iraq's nominal grid is 230/400 V at 50 Hz per IEC 60038. While the frequency is the same (50 Hz), firmware protection thresholds and reconnection delays validated for Chinese 220/380 V conditions must be re-parameterised and documented for Iraq's 230/400 V nominal values and its wider real-world voltage operating envelope due to grid instability.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 156 — 标准电压 (Standard voltages — China: 220/380 V at 50 Hz)
NB/T 32004-2018 — 光伏并网逆变器技术规范 (Technical Specification for Photovoltaic Grid-Connected Inverters)
Iraq's grid operates at 50 Hz, single-phase 230 V, three-phase 400 V (IEC 60038 standard voltages). The Ministry of Electricity (MoE) oversees grid connection; large-scale solar projects (including TotalEnergies, PowerChina, and Masdar-led tenders) reference IEC technical specifications in their procurement documents. Key requirements for PV inverters include: (1) IEC 62116 anti-islanding — inverters must detect loss of mains and disconnect within the standard's prescribed detection window; (2) IEC 61727 — characteristics of the utility interface for PV systems, specifying voltage and frequency operating ranges and protection settings for Iraq's 50 Hz grid; (3) firmware and protection relay settings validated for Iraq's 230/400 V, 50 Hz nominal parameters. Iraq's grid suffers chronic instability — frequent outages, voltage fluctuations, and frequency deviations — making wide operating-range firmware and robust protection critical. Many installations operate as hybrid or off-grid systems with diesel/generator backup, requiring inverter specifications to explicitly cover hybrid operating modes and generator compatibility.IEC 62116 — Utility-interconnected photovoltaic inverters — Test procedure of islanding prevention measures (referenced in MoE / project procurement specifications)
IEC 61727 — Photovoltaic (PV) systems — Characteristics of the utility interface (operating range and protection settings for 50 Hz grid)
IEC 60038 — IEC standard voltages (230 V single-phase, 400 V three-phase, 50 Hz — Iraq nominal grid)
IEC 62109-1/-2 — Safety of power converters for use in photovoltaic power systems (referenced in major project tenders)
Gap: Chinese GB/T grid-connection documents do not automatically satisfy COSQC conformity requirements or Iraq MoE / project procurement specifications. Exporters must prepare: (a) IEC 62116 anti-islanding test report from an ILAC-accredited laboratory; (b) IEC 61727 utility interface compliance evidence; (c) IEC 61000-3-2 harmonic emission compliance evidence; (d) firmware protection threshold documentation validated for Iraq's 230/400 V, 50 Hz grid — not the 220/380 V Chinese grid parameters. Additionally, for installations in Iraq's unstable grid environment: (e) inverter wide-range input/output tolerance specifications must cover the actual voltage and frequency deviations observed on the Iraq grid; (f) for hybrid systems, explicit documentation of generator-sync and transfer-switch compatibility is required. Where inverter firmware settings differ from the factory default for China, re-parameterisation must be documented and, if material, retested under the applicable IEC standard.[INFORMATIONAL] Iraq's nominal grid is 230/400 V at 50 Hz; COSQC conformity and MoE / project procurement requirements reference IEC standards including IEC 62116 and IEC 61727. Chinese GB/T grid certificates do not automatically satisfy these requirements. Re-parameterise inverter firmware for Iraq's 230/400 V, 50 Hz grid before testing and document the configuration. For hybrid installations, explicitly document generator-sync and transfer-switch compatibility. Verify current COSQC Technical Regulations, IQS standards adoption, and project-specific MoE requirements directly with COSQC (cosqc.gov.iq) and the Ministry of Electricity (moelc.gov.iq) before finalising the equipment compliance package. COSQC (Central Organization for Standardization and Quality Control), Iraq2026-06-14 · unverified
Iraq MoE Large-Scale Solar Tenders — IEC-Aligned Procurement Specifications and COSQC Pre-Shipment Inspection China does not have a direct equivalent pre-shipment inspection regime for exported PV inverters. Chinese export documentation for PV inverters typically includes GB/T 37408-2021 or NB/T 32004 test certificates from CNAS-accredited laboratories, CQC/CGC voluntary certification, and customs export declarations. These Chinese export documents are not automatically accepted as COSQC conformity evidence in Iraq. Chinese exporters supplying inverters to Iraq MoE tenders or the general import market must obtain COSQC-recognised conformity certification — either through IEC test evidence assessed by a COSQC-authorised body, or by demonstrating compliance with the applicable IQS standards.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)
Iraq's Ministry of Electricity has issued large-scale solar PV tenders, with major projects involving TotalEnergies, PowerChina, and Masdar referencing IEC technical specifications for equipment procurement. COSQC operates Iraq's conformity assessment and pre-shipment inspection regime: imported goods subject to COSQC Technical Regulations require a Certificate of Conformity (CoC) obtained through a COSQC-authorised inspection body before shipment. For solar PV inverters, the relevant conformity pathway requires: (a) assessment against applicable Iraqi Standards (IQS) — which align with or adopt IEC standards — or accepted IEC test evidence; (b) pre-shipment inspection conducted by a COSQC-authorised body in the country of export; (c) submission of conformity documentation to Iraqi Customs for clearance. The exact IQS standards applicable to PV inverters and the current COSQC product scope should be verified directly with COSQC, as the regulated product list is updated periodically.COSQC pre-shipment inspection regime — Certificate of Conformity (CoC) for regulated imports (cosqc.gov.iq)
IQS (Iraqi Standards) — aligned with or adopting IEC standards for PV inverters
IEC 62109-1/-2 — Safety of power converters for use in photovoltaic power systems (referenced in MoE / major project procurement specifications)
IEC 62116 — Anti-islanding test procedure (referenced in IEC-aligned project procurement)
Iraq Ministry of Electricity (MoE) tender specifications — moelc.gov.iq
Gap: Chinese inverters destined for Iraq must go through COSQC pre-shipment inspection conducted by a COSQC-authorised body in China before export. Chinese GB/T or NB/T certificates alone are not sufficient for COSQC conformity. Exporters should: (a) identify the applicable IQS standards for PV inverters from COSQC (cosqc.gov.iq); (b) obtain IEC 62109-1/-2 safety type-test evidence and IEC 62116 anti-islanding test evidence from an ILAC-accredited laboratory; (c) engage a COSQC-authorised inspection body in China to conduct pre-shipment inspection and issue the CoC; (d) review project tender documents for MoE or IPP-specific equipment compliance requirements, which may impose additional specifications beyond the baseline COSQC import requirement.[INFORMATIONAL] COSQC pre-shipment inspection is a mandatory import gate for regulated products in Iraq — Chinese GB/T or NB/T certificates alone do not satisfy this requirement. Engage a COSQC-authorised inspection body in China, prepare IEC 62109-1/-2 and IEC 62116 test evidence, and verify the current regulated product scope and applicable IQS standards directly with COSQC (cosqc.gov.iq) and the Ministry of Electricity (moelc.gov.iq) before shipment. For project tenders, review the full equipment specification in the tender documents as MoE or project-owner requirements may exceed the baseline import conformity requirement. COSQC (Central Organization for Standardization and Quality Control), Iraq2026-06-14 · unverified
IEC 62109-1 / IEC 62109-2 Safety Evidence — Iraq COSQC Conformity and MoE / Project Procurement Specifications China's primary 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 recommended 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 under COSQC conformity assessment or by Iraq project owners as equivalent to IEC 62109 type-test evidence. CQC and CGC voluntary certifications are available against GB/T 37408 but carry no recognition under the COSQC regime.GB/T 37408-2021 — 光伏并网逆变器技术要求 (Technical Requirements for Photovoltaic Grid-Connected Inverters) Iraq's COSQC conformity assessment framework references IEC standards, including IEC 62109-1/-2 (Safety of power converters for use in photovoltaic power systems), as the baseline for PV inverter safety. Major solar projects in Iraq tendered by the Ministry of Electricity and international project developers (TotalEnergies, PowerChina, Masdar) reference IEC 62109-1/-2 in procurement specifications as the required safety evidence for inverters. IEC 62109-1 (Part 1: General requirements) and IEC 62109-2 (Part 2: Particular requirements for inverters) together define the safety type-test framework. Third-party type-test evidence from an ILAC-accredited laboratory is the expected form of compliance demonstration for project submissions and COSQC pre-shipment inspection. IQS (Iraqi Standards) aligned with IEC 62109 apply under COSQC's regulated product regime — the exact IQS numbers and scope should be verified directly with COSQC.IEC 62109-2 — Safety of power converters for use in photovoltaic power systems — Part 2: Particular requirements for inverters (referenced in COSQC conformity and Iraq MoE / project procurement specifications)
IEC 62109-1 — Safety of power converters for use in photovoltaic power systems — Part 1: General requirements (implicitly applicable as parent standard)
COSQC conformity assessment regime — IQS standards aligned with IEC 62109 (cosqc.gov.iq)
Iraq Ministry of Electricity (MoE) tender specifications — moelc.gov.iq
Chinese GB/T 37408 safety certification does not satisfy COSQC conformity requirements or Iraq MoE / project IEC 62109-2 type-test requirements for solar PV inverters. 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 Iraq. These IEC 62109 certificates must be included in the documentation package submitted to the COSQC-authorised inspection body for pre-shipment inspection. For Iraq project tenders, verify whether the procurement specification requires IEC 62109-1/-2 type-test evidence from a specific category of accredited laboratory (e.g., ILAC-MRA signatory), and whether model-family coverage (delta review) is accepted or full re-testing is required for each SKU.[INFORMATIONAL] A solar PV inverter holding only Chinese GB/T 37408 certification cannot satisfy COSQC conformity requirements or Iraq MoE / project IEC 62109-2 type-test requirements. Plan for IEC 62109-1/-2 type testing by an ILAC-accredited laboratory and include the resulting certificates in the COSQC pre-shipment inspection documentation package. Verify current COSQC Technical Regulations, the applicable IQS standards for PV inverters, and project-tender equipment specification requirements directly with COSQC (cosqc.gov.iq) and the Ministry of Electricity (moelc.gov.iq) before committing to a test programme. COSQC (Central Organization for Standardization and Quality Control), Iraq2026-06-14 · unverified

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