GB14287.2-2014
Electrical fire monitoring system―Part 2: Residual current electrical fire monitoring detectors
电气火灾监控系统 第2部分：剩余电流式电气火灾监控探测器
GB 14287.2-2014 is a current mandatory Chinese national standard for Electrical fire monitoring system―Part 2: Residual current electrical fire monitoring detectors. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Jun 1, 2015.
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 specifically to residual current electrical fire monitoring detectors used within electrical fire monitoring systems. It covers independent, non-independent, and multi-sensor combined detectors designed to monitor changes in residual current. This standard is mandatory for manufacturers producing electrical fire safety equipment for the Chinese market. It does not apply to the main monitoring equipment itself, which is covered under Part 1 of the standard series.
Technical requirements
The standard specifies stringent requirements for the monitoring and alarm functions of detectors. For instance, when the residual current reaches the alarm set value, the detector must issue an alarm signal within 30 seconds. The alarm value must be set between 20mA and 1000mA, with specific error tolerances for the alarm action and real-time display. Detectors must not possess circuit breaker functions, ensuring they strictly monitor and signal rather than interrupt circuits. Regarding electrical safety and insulation, the standard mandates minimum insulation resistance and dielectric strength for external charged terminals. Detectors must also pass a leakage current test under 1.06 times the rated voltage. Manufacturers must ensure strict adherence to these electrical safety limits to pass compliance. The standard outlines comprehensive electromagnetic compatibility (EMC) requirements. Detectors must withstand various electromagnetic disturbances, including electrostatic discharge, electrical fast transient/burst, and surges. Detectors must maintain normal monitoring status during these EMC disturbances without false alarms or operational failures. Additionally, it sets parameters for environmental and mechanical endurance. Detectors are required to operate reliably under extreme climatic conditions (such as low temperatures and constant damp heat) and mechanical stresses like vibration and collision. The standard also specifies requirements for the residual current transformer (if used), including accuracy classes and temperature limits.
Testing methods
The standard mandates a series of rigorous evaluations, including basic function tests to verify alarm thresholds and response times. It introduces specific tests for repeatability, consistency, and balance to ensure detector reliability across different sensors and operational angles. Manufacturers must conduct large current shock adaptability tests to verify durability under transient overcurrent conditions. Furthermore, it requires comprehensive EMC testing and environmental testing (vibration, collision, low temperature, and damp heat) in accordance with referenced standards like GB/T 17626 and GB 16838.
FAQs
What products are regulated under GB 14287.2-2014?
The standard regulates residual current electrical fire monitoring detectors used in electrical fire monitoring systems. It covers both independent and non-independent detectors, including multi-sensor combined types. It does not apply to the main monitoring equipment itself or temperature-sensing detectors, which are covered by other parts of the GB 14287 series.
Are there any updates from the previous version of GB 14287.2-2014?
The 2014 version is mandatory and introduces several new tests compared to the 2005 version, including repeatability, consistency, balance, large current shock adaptability, and leakage current tests. It also adds comprehensive EMC tests like ESD, surge, and voltage dips, while canceling the previous impact test. Manufacturers previously compliant with the 2005 version must update their testing protocols.
How does GB 14287.2-2014 differ from ISO standards?
While GB 14287.2-2014 references international EMC standards (like the IEC 61000-4 series via GB/T 17626), it is a China-specific mandatory standard with unique national requirements for fire monitoring systems. Products must specifically comply with GB 14287.2-2014 to be legally sold in China, rather than relying solely on ISO or IEC certifications.
The summary above provides a high-level overview of GB 14287.2-2014. 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 14287.2-2014 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