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GB 14287.3-2014 English PDF (GB14287.3-2014)

GB 14287.3-2014 English PDF (GB14287.3-2014)

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GB 14287.3-2014: Alarm and control system for electric fire protection -- Part 3: Heat detectors for electric fire prevention

This Part of GB 14287 specifies terms and definitions, classification, requirements, tests, inspection rules and marking of temperature sensing electrical fire monitoring detectors. This Part applies to temperature sensing electrical fire monitoring detectors in electrical fire monitoring systems.
GB 14287.3-2014
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 13.220.20
C 81
Replacing GB 14287.3-2005
Electrical fire monitoring system
- Part 3. Temperature sensing electrical fire
monitoring detector
ISSUED ON. JULY 24, 2014
IMPLEMENTED ON. JUNE 1, 2015
Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Classification ... 7
5 Requirements... 7
6 Tests ... 13
7 Inspection rules ... 22
8 Markings ... 23
Foreword
Clauses 5, 7 and 8 of this Part of GB 14287 are mandatory and the rest is recommended.
GB 14287 ?€?Electric fire monitoring system?€? consists of the following parts. - Part 1. Electrical fire monitoring equipment;
- Part 2. Residual current electrical fire monitoring detectors;
- Part 3. Temperature sensing electrical fire monitoring detectors;
...
This Part is Part 3 of GB 14287.
This Part is drafted in accordance with the rules given in GB/T 1.1-2009. This Part replaces GB 14287.3-2005 ?€?Electrical fire monitoring system - Part 3. Temperature sensing electrical fire monitoring detector?€?; compared with GB 14287.3- 2005, main technical modifications are as follows.
- ADD leakage current test (see 6.7);
- ADD radiated, radio-frequency, electromagnetic field immunity test (see 6.9); - ADD Immunity to conducted disturbances, induced by radio-frequency fields (see 6.10);
- ADD electrostatic discharge immunity test (see 6.11);
- ADD electrical fast transient/burst immunity test (see 6.12);
- ADD surge (impact) immunity test (see 6.13);
- ADD voltage dips, short interruptions and voltage variations immunity test (see 6.14);
- ADD voltage fluctuation test (see 6.15);
- ADD vibration (sine) (running) test (see 6.16);
- ADD collision test (see 6.17);
- CANCEL pressure resistance test, high temperature test and corrosion test (see 5.6, 5.8 and 5.10 of 2005 edition).
Electrical fire monitoring system - Part 3. Temperature
sensing electrical fire monitoring detector
1 Scope
This Part of GB 14287 specifies terms and definitions, classification, requirements, tests, inspection rules and marking of temperature sensing electrical fire monitoring detectors.
This Part applies to temperature sensing electrical fire monitoring detectors in electrical fire monitoring systems.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the dated edition cited applies. For undated references, the latest edition of the referenced document (including all amendments) applies.
GB 4706.1 Household and similar electrical appliances - Safety - Part 1. General requirements
GB/T 9969 General principles for preparation of instructions for use of industrial products
GB12978 Rules for test of fire electronic products
GB 14287.2 Electrical fire monitoring system - Part 2. Residual current electrical fire monitoring detectors
GB 16838 Environmental test methods and severities for fire electronic products GB/T 17626.2 Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test
GB/T 17626.3 Electromagnetic compatibility - Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
GB/T 17626.4 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burst immunity test
the detector shall send an alarm signal within 40 s and light up the alarm indicator light. The alarm indication of non-independent detectors shall be maintained until the electrical fire monitoring equipment connected to it is reset, and the alarm indication of independent detectors shall be maintained until it is manually reset.
5.2.4 The alarm temperature of detectors shall be set in the range of 45 ??C ~ 140 ??C; the absolute value of the difference between the alarm value and the set value shall not be greater than 5 % of the set value.
5.2.5 The display error of detectors with real-time temperature display function shall not be greater than 5 %.
5.2.6 If there is a break or a short in the connection line between the signal processing unit and the external temperature sensor of non-independent detectors, the detector shall send a fault signal to the electrical fire monitoring equipment connected to it. 5.2.7 The alarm value of detectors can be set in the detector or the electrical fire monitoring equipment connected to it, and on-site settings can be made only through special tools, passwords and other means.
5.2.8 Combined multi-sensing detectors with function of measuring residual current shall also meet the requirements of GB 14287.2.
5.3 Monitoring alarm function
5.3.1 Detectors in the alarm state shall send sound and light alarm signals and indicate the alarm value and location. The sound alarm signal can be manually eliminated; there shall be sound elimination instructions when the sound alarm signal is manually eliminated. When there are other alarm signals input, the sound alarm signal shall be able to be restarted.
5.3.2 Under alarm conditions, the sound pressure level (A weighting) at 1 m in front of its audio device shall be greater than 70 dB and less than 115 dB.
5.3.3 When there is a break or short in the connection line between the signal processing unit and the external temperature sensor, the detector shall be able to send sound and light fault signals. The sound fault signal shall be clearly different from the sound alarm signal. The sound fault signal shall be able to be manually eliminated. The light fault signal shall be maintained until the fault condition is restored. 5.3.4 The sound alarm signal of detectors shall be prior to the sound fault signal. 5.3.5 Independent detectors can be connected to 4 sensors at most.
5.3.6 The alarm information shall be displayed prior to the fault information. In the alarm state, the existing fault information shall be able to be manually queried, and the 5.15 Use instructions
5.15.1 The detector shall have corresponding Chinese use instructions.
5.15.2 The use instruction shall meet the requirements of GB/T 9969 and comply with the performance of the detector.
6 Tests
6.1 Test outline
6.1.1 The test procedure is shown in Table 4.
6.1.2 Unless otherwise stated in the relevant provisions, all tests shall be carried out under the following atmospheric conditions.
- temperature. 15 ??C ~ 35 ??C;
- relative humidity. 25 % ~ 75 %;
- atmospheric pressure. 86 kPa ~ 106 kPa.
6.1.3 Unless otherwise stated in the relevant provisions, the tolerance of the test data shall be ??5 %; the deviation of the environmental condition parameters shall meet the requirements of GB 16838.
6.1.4 Before the test, the manufacturer shall provide 5 detectors as test samples (hereinafter referred to as samples). If required, it shall also provide the matching electrical fire monitoring equipment.
6.1.5 The detector shall be checked before the test as follows.
a) visual inspection, which shall meet the following requirements.
1) the surface shall be free of corrosion, falling off and blistering of coating, obvious scratches, cracks, burrs and other mechanical damages;
2) the fastening parts shall be free of loosening
b) according to the requirements of 5.5, check the samples, which shall meet the requirements before the test.
Table 4 -- Test procedures
No. Clause No. Test items
No.
1 6.1.5 Check before test ???b ??? ??? ??? ???
the fault signal transmission of the sample.
6.2.1.4 CHECK the setting of the alarm set value of the sample.
6.2.1.5 For detectors with a real-time temperature display function, check the display error of the temperature of the sample.
6.2.2 Non-contacting detectors
6.2.2.1 FIX the sample on the bracket; MAKE the sample in the normal monitoring state; according to the requirements specified by the manufacturer, ALIGN the sample with the standard blackbody radiation source; ADJUST the distance to make the sample in the radiation range of the blackbody radiation source; MAKE the temperature of the standard blackbody radiation source rise at a rate of not greater than 1 ??C/min until the sample alarms; OBSERVE the state of the sample; RECORD the alarm temperature.
6.2.2.2 COVER the standard blackbody radiation source with a baffle; RESET the sample; MAKE the sample in the normal monitoring state; ADJUST the temperature of the standard blackbody radiation source to 20 % higher than the sample?€?s alarm set value; REMOVE the baffle; START the timer. When the sample sends an alarm signal, observe the state of the sample and record the response time.
6.2.2.3 MAKE the sample in the normal monitoring state...

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