CROSS-STANDARD public interest · Solar PV inverter

China-to-Sri Lanka 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 Sri Lanka SLSI standards, IEC 62109 safety, PUCSL/CEB grid-connection and net-metering/net-accounting requirements, 50 Hz grid parameters, and EMC expectations.

Dataset 2026-06-11 Last verified 2026-06-14 5 rows

GAP MATRIX

Compliance Gap Matrix

Gap matrix
Compliance item Common China baseline Sri Lanka (SLSI / PUCSL / CEB) Gap / action Source + verification date
EMC and 50 Hz Grid-Frequency Compatibility China also uses a 50 Hz grid, so frequency settings are nominally compatible. However, Chinese EMC standards (GB/T 17626 series, GB/T 14549) and utility-specific voltage/frequency window settings differ from IEC 61000 and CEB grid-code parameters in detail. Chinese EMC test reports to GB standards are not automatically recognised as satisfying IEC-based SLSI requirements.GB/T 17626 series (EMC immunity and emission)
GB/T 14549 (harmonic limits for utility grid)		 Sri Lanka operates a 50 Hz, 230 V single-phase / 400 V three-phase grid, aligned with IEC grid parameters. PV inverters must be configured for 50 Hz operation with frequency-response settings, ride-through windows, and protection relay parameters matching the CEB grid-code for the 50 Hz system. EMC requirements follow IEC standards applicable to power electronics equipment. SLSI may reference IEC 61000 series EMC standards for interference limits.IEC 61000 series: Electromagnetic compatibility (EMC) standards
IEC 62109-1/-2: Inverter EMC and safety requirements
CEB grid-code frequency and voltage parameters for 50 Hz system		 While both China and Sri Lanka use 50 Hz grids, CEB and SLSI require inverter parameter settings and EMC evidence aligned with IEC standards, not GB standards. Exporters must confirm that inverter firmware frequency windows, voltage ride-through limits, and protective relay settings match CEB specification, and that EMC test evidence references IEC 61000 series limits rather than GB-only limits.[INFORMATIONAL] Chinese GB EMC test reports and utility-specific settings do not automatically satisfy SLSI / CEB IEC-based EMC and grid-parameter requirements. Obtain IEC 61000-based EMC evidence and confirm inverter parameter settings meet CEB 50 Hz grid-code specifications. Public Utilities Commission of Sri Lanka (PUCSL)2026-06-14 · unverified
PUCSL / CEB Grid-Connection and Net-Metering / Net-Accounting Requirements China uses GB/T 19939-2005 and NB/T 32004-2018 for PV inverter grid-connection testing, and State Grid / Southern Grid enterprise standards for interconnection parameters including anti-islanding and power quality. These documents target the 50 Hz Chinese grid but with different utility-specific settings and protection relay requirements that differ from CEB specifications.GB/T 19939-2005
NB/T 32004-2018
State Grid / China Southern Power Grid project interconnection rules		 The Public Utilities Commission of Sri Lanka (PUCSL) and Ceylon Electricity Board (CEB) regulate grid connection for distributed solar PV systems including inverter-connected installations. CEB's net-metering and net-accounting schemes require the inverter to meet grid-code parameters including voltage and frequency ride-through, anti-islanding protection, power factor, harmonic limits, and fault-level compatibility for the 50 Hz Sri Lanka grid. CEB approval of inverter technical specifications is required before connection. PUCSL sets the overarching regulatory framework under the Sri Lanka Electricity Act.Sri Lanka Electricity Act No. 36 of 2024 (as amended by Act No. 14 of 2025)
CEB Net-Metering and Net-Accounting scheme technical requirements
PUCSL distributed-generation and grid-connection regulations
IEC 62116: Test procedure of islanding prevention measures for utility-interconnected photovoltaic inverters		 CEB requires inverter technical specifications to meet Sri Lanka grid-code parameters for the 50 Hz grid, including specific voltage and frequency window settings, anti-islanding response time, reactive power capability, and harmonic limits. Chinese inverter grid-connection certificates use China-specific utility settings and do not directly satisfy CEB technical review. Exporters must prepare CEB-compatible parameter sheets, anti-islanding test evidence (IEC 62116 or equivalent), and single-line diagrams for CEB review before connection approval.[INFORMATIONAL] Chinese inverter grid-connection certificates do not satisfy CEB technical review. Prepare CEB-specific parameter sheets, IEC 62116 anti-islanding evidence, and single-line diagrams for CEB approval before connecting any PV inverter to the Sri Lanka grid. Ceylon Electricity Board (CEB)2026-06-14 · unverified
Labelling, Marking, and Import Documentation Chinese PV inverters carry CCC marks (where applicable), Chinese-language nameplate data, GB-rated electrical parameters, and Chinese customs export documentation. Chinese-only labelling is not accepted for Sri Lanka; export versions must carry English-language parameter labels meeting the Sri Lanka Customs and SLSI documentation requirements.China Compulsory Certification (CCC) — not applicable in Sri Lanka
GB/T 37408-2019 nameplate requirements		 Electrical equipment imported into Sri Lanka must comply with SLSI labelling requirements and Sri Lanka Customs import procedures. Product labels must be in English (the primary commercial language for technical equipment) and may require Sri Lanka-specific model identification, country of origin, rated electrical parameters (voltage, frequency, power), and importer details. SLSI may require a conformity certificate or type-approval marking before sale. Sri Lanka Customs requires accurate tariff classification and import documentation.SLSI requirements for electrical equipment labelling and type-approval marking
Sri Lanka Customs import procedures and tariff classification (HS code for PV inverters)
Sri Lanka Consumer Affairs Authority Act (applicable labelling obligations)		 Chinese domestic labelling and CCC marks have no standing in Sri Lanka. Exporters must produce English-language labels with Sri Lanka-compliant rated parameter data (230/400 V, 50 Hz), country of origin, and importer contact details. SLSI type-approval or registration evidence should accompany the shipment. Sri Lanka Customs HS classification for PV inverters should be confirmed before shipping.[INFORMATIONAL] Chinese domestic labelling and CCC marks are not valid in Sri Lanka. Prepare English-language labels with Sri Lanka-rated parameters, confirm SLSI type-approval or registration status, and verify Customs HS classification before shipment. Sri Lanka Standards Institution (SLSI)2026-06-14 · unverified
CEB Net-Metering and Net-Accounting Scheme Requirements China's distributed PV net-metering and grid-connection framework is managed by the National Energy Administration (NEA) and State Grid / Southern Grid, using different application procedures, metering standards, and tariff mechanisms. Chinese distributed PV documentation and utility approvals are not transferable to CEB's Sri Lanka net-metering scheme.NEA distributed PV grid-connection rules
State Grid / China Southern Power Grid net-metering procedures		 The Ceylon Electricity Board (CEB) operates net-metering and net-accounting schemes for rooftop and small-scale solar PV systems. Under these schemes, inverters must be approved by CEB before connection. Technical requirements include: inverter capacity matching system size within CEB limits, approved anti-islanding protection, compatible communication and metering interfaces, and compliance with CEB application and inspection procedures. The schemes are governed by PUCSL-approved tariffs and CEB procedural guidelines. System size thresholds and eligibility rules apply.CEB Net-Metering and Net-Accounting Scheme procedural guidelines
PUCSL-approved tariff orders for small-scale renewable energy
Sri Lanka Electricity Act No. 36 of 2024 (as amended by Act No. 14 of 2025)		 Chinese net-metering or grid-connection approvals have no standing under CEB's scheme. Exporters and installers must follow the CEB application process: submit system design including inverter model and specifications, obtain CEB technical review and approval, install a CEB-compatible bidirectional meter, and pass CEB inspection before energisation. Inverter models not on CEB's approved or reviewed list may face delays.[INFORMATIONAL] CEB net-metering scheme approval requires inverter pre-approval and system inspection by CEB. Chinese grid-connection documentation does not transfer. Follow CEB's application process and confirm inverter technical specifications meet CEB scheme requirements before system commissioning. Ceylon Electricity Board (CEB)2026-06-14 · unverified
IEC 62109 Safety for Solar PV Inverters — SLSI Baseline China commonly uses GB/T 37408-2019 (photovoltaic inverter technical requirements) and NB/T 32004-2018 for photovoltaic inverter testing. These Chinese standards have partial technical alignment with IEC 62109 but are not equivalent certifications and are not accepted as substitutes for IEC 62109 test evidence in Sri Lanka.GB/T 37408-2019
NB/T 32004-2018		 Sri Lanka Standards Institution (SLSI) adopts IEC standards as the technical baseline for electrical and power-electronics equipment. For solar PV inverters, IEC 62109-1 (general safety requirements) and IEC 62109-2 (particular requirements for inverters) represent the expected safety standard. SLSI may require product registration or conformity evidence from recognised testing bodies before importation and sale; importers should confirm the current SLSI type-approval or registration requirement for PV inverters with SLSI before shipment.IEC 62109-1: Safety of power converters for use in photovoltaic power systems — Part 1: General requirements
IEC 62109-2: Safety of power converters for use in photovoltaic power systems — Part 2: Particular requirements for inverters
SLSI type-approval or registration requirements for electrical equipment		 Chinese GB/T inverter test reports do not substitute for IEC 62109 test evidence recognised by SLSI. Exporters should obtain IEC 62109-1 and IEC 62109-2 test reports from an internationally accredited laboratory, confirm SLSI registration or type-approval status for PV inverters before shipment, and prepare bilingual (English/Sinhala or English/Tamil) product documentation as required.[INFORMATIONAL] A Chinese GB/T inverter test report does not satisfy SLSI or IEC 62109 requirements. Confirm SLSI registration requirements and obtain IEC 62109-1/62109-2 test evidence from an accredited laboratory before shipment to Sri Lanka. Sri Lanka Standards Institution (SLSI)2026-06-14 · unverified

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