GB26851-2011
Audible and/or visual fire alarm signaling appliances
火灾声和/或光警报器
GB 26851-2011 is a current mandatory Chinese national standard for Audible and/or visual fire alarm signaling appliances. It appears in the Construction compliance cluster with a product safety focus and has an implementation date of Jan 1, 2012.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to fire audible and/or visual alarms installed in general industrial and civil buildings. It also covers alarms with special performance used in other environments, unless specific requirements are dictated by other relevant standards. Manufacturers of fire warning devices must ensure compliance with this standard for the Chinese market. The standard categorizes products into indoor and outdoor types, as well as audible, visual, and combined audible-visual alarms.
Technical requirements
The standard specifies the basic performance requirements for different types of alarms. For audible alarms, it defines sound pressure levels at specific distances, including a ramp-up mechanism for residential use. For visual alarms, it sets flash frequency and visibility parameters under specific ambient light conditions. Gas release alarms must feature specific red text on a white background with defined luminance ratios. All alarm types must maintain continuous operation for at least 4 hours to prove reliability. Additionally, the standard mandates voltage fluctuation tolerance, requiring devices to operate normally between 85% and 110% of the rated voltage. It also sets strict insulation resistance and electrical strength limits to ensure electrical safety. Devices must withstand various electromagnetic compatibility (EMC) tests, including electrostatic discharge and surges, referencing standards like GB/T 17626.2 and GB/T 17626.5. Furthermore, the alarms must endure climatic and mechanical environmental tests, such as high/low temperatures, constant damp heat, SO2 corrosion, shock, and vibration. Outdoor-type alarms must achieve an IP33 ingress protection rating as per GB 4208.
Testing methods
The testing procedures evaluate the alarm's performance under normal and extreme conditions. Key tests include the basic function test (measuring sound pressure, flash frequency, and visibility), reliability test, and voltage fluctuation test. Electrical safety is verified through insulation resistance and electrical strength tests. Environmental resilience is assessed via high/low temperature operation tests, constant damp heat, and SO2 corrosion endurance tests. Mechanical stability is confirmed through shock and sine vibration tests. Compliance with EMC standards is verified through a series of immunity tests outlined in the GB/T 17626 series.
FAQs
What products are regulated under GB 26851-2011?
GB 26851-2011 regulates fire audible and/or visual alarm signaling appliances used in industrial and civil buildings, including sound, light, sound-light combination, and gas release alarms.
Is GB 26851-2011 a mandatory standard?
Yes, Chapters 4, 6, and 7 of GB 26851-2011 are mandatory, covering technical requirements, inspection rules, and marking. The remaining chapters are recommended.
What is the required IP rating for outdoor fire alarms under this standard?
According to the standard, outdoor-type fire alarms must meet an IP33 ingress protection rating as specified in GB 4208.
The summary above provides a high-level overview of GB 26851-2011. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 26851-2011 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- C81
- ICS
- 13.220.20
- Competent department
- National Fire and Rescue Administration
- Technical committee
- National Technical Committee on Fire Protection of Standardization Administration of China
Relationships
Replaced by:GB 26851-2026 (Upcoming)