| 1 | General explosion-protection design | GB 3836.1-2021, Explosive atmospheres — Part 1: Equipment — General requirements | Check that the product’s Ex marking, certificate and technical documentation match the actual light model and configuration. | This is a core reference for explosion-protected equipment used in explosive atmospheres. |
| 2 | Flameproof protection | GB 3836.2-2021, Equipment protection by flameproof enclosures “d” | Where the product uses Ex d protection, verify the certified enclosure, cable entries, fasteners and permitted installation details. | The protection method and installation must be suitable for the hazardous-area application. |
| 3 | Hazardous-area suitability | Applicable parts of the GB/T 3836 series and the project’s hazardous-area classification | Match the equipment protection level, gas or dust group, temperature class and area classification to the site design. | A product’s Ex rating is not universally suitable for every hazardous location. |
| 4 | Electrical installation instructions | GB/T 3836.15-2017, Explosive atmospheres — Part 15: Electrical installations design, selection and erection | Review wiring diagrams, cable-entry requirements, earthing instructions and installation restrictions for the intended site. | Correct equipment selection and installation are both essential to maintaining explosion protection. |
| 5 | Fire emergency lighting system design | GB 51309-2018, Technical standard for fire emergency lighting and evacuation indication system | Check that the proposed emergency-lighting layout, control approach and installation design are coordinated with the project requirements. | Explosion protection does not replace the project’s fire emergency lighting design requirements. |
| 6 | Emergency-lighting product requirements | GB 17945-2024, Fire emergency lighting and evacuation indicating system | Request evidence that the product complies with the applicable edition and requirements for its declared product category. | This standard addresses fire emergency lighting and evacuation indication products; confirm applicability to the specific model. |
| 7 | Certification and regulatory scope | Applicable Chinese explosion-proof product certification and CCC requirements, where required | Check the current regulatory scope, certificate validity, certificate holder, model coverage and issuing body. | Certification obligations depend on the product and current regulations; verify them for the exact product before purchase. |
| 8 | Emergency operation and battery | Applicable product requirements, project specification and approved product documentation | Confirm rated emergency duration, battery type, charging method, replacement procedure and test records against the project specification. | Emergency performance should be verified for the selected model and operating conditions, not assumed from appearance or wattage. |
| 9 | Product traceability and documentation | Certification records, nameplate information, user manual and quality-control documents | Compare the nameplate and model number with certificates, drawings, test reports and the delivered product. | Consistent documentation helps confirm that the delivered configuration is the one evaluated and approved. |
| 10 | Inspection, maintenance and after-sales support | Applicable GB/T 3836 requirements, product instructions and site maintenance procedures | Assess access to inspection guidance, spare parts, battery replacement support and service records for the installed model. | Ongoing inspection and maintenance help preserve product condition and emergency readiness. |