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GB 20517-2006 PDF EnglishSearch result: GB 20517-2006
GB20517-2006: PDF in EnglishGB 20517-2006 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 13.220.20 C 81 Fire detection and alarm systems – Smoke alarms ISSUED ON. JULY 17, 2006 IMPLEMENTED ON. APRIL 1, 2007 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 ... 4 2 Normative References ... 4 3 Product classification ... 4 4 General requirements ... 5 5 Requirements and test methods ... 6 6 Inspection rules ... 29 7 Marking and packaging ... 30 8 Product instruction manual ... 31 Fire detection and alarm systems – Smoke alarms 1 Scope This Standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging and manufacturer’s instructions for fire detection and alarm systems (hereinafter referred to as smoke alarms). This Standard applies to smoke alarms that are installed in civil architectures and operate using scattered light, transmitted light (photoelectric smoke sensing) and ionization (ion smoke sensing). 2 Normative References The provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrigenda) or revisions do not apply to this Standard. However, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB 4715-1993, Technical requirements and test methods for point type smoke fire detectors GB 9969.1-1998, General principles for preparation of instructions for use of industrial products GB 12978-2003, Rules for test of fire electronic products GB 16838-1997, Environmental test methods and severities for fire electronic products 3 Product classification 3.1 in accordance with operating principle. a) photoelectric smoke alarms (using scattered light and transmitted light); b) ionization smoke alarms. 3.2 in accordance with power supply mode. a) internal battery smoke alarms; b) external battery smoke alarms; c) smoke alarms which have external power supply and are equipped with the internal standby battery. 3.3 in accordance with operating mode. a) self-contained smoke alarms; b) interconnectable smoke alarms. 4 General requirements 4.1 When a fire occurs in the monitored area and its smoke parameters achieve the preset values, the smoke alarm shall give acoustical and optical fire alarm signals at the same time. 4.2 For the multiple station smoke alarm, when one alarm gives fire alarm signals, the other smoke alarms connected with it shall also give fire alarm signals. 4.3 3 m from the smoke alarm, the sound pressure level of fire alarm signals shall be greater than 80 dB (A weighting). 4.4 The smoke alarm shall have the self-checking function and give acoustical and optical fire alarm signals during self-checking. 4.5 For the smoke alarm having the alarm-silencing function, the alarm-silence period shall not be less than 100 s; for the interconnectable smoke alarm, the alarm- silence of the smoke alarm shall not prevent the smoke alarms connected with it from giving alarm signals. 4.6 Except battery and fuse, the smoke alarm shall not have components or parts which can be replaced or repaired by user; when the battery is removed, visual warning shall be provided. 4.7 The smoke alarm is capable of communicating with auxiliary equipment such as remote display, but it shall not influence the fire detection performance of the smoke alarm in case of any disconnection or short-circuit fault during the communication between the smoke alarm and the equipment. 4.8 For the smoke alarm having multiple indicator lights, indicator lights shall be marked by color. For the smoke alarm powered by an AC power supply, it shall have AC power supply working indicator lights. the AC power supply working indicator light shall be green; the fire indicator light shall be red; the fault indicator light shall be yellow. 4.9 The smoke alarm shall be provided with a fabric of maximum mesh size not greater than 1 mm or other measures to prevent the ingress of insects. First supply power at nominal voltage; then decrease the power voltage at the rate of not greater than 0.1 V per min; observe whether the smoke alarm gives fault signals; record the voltage value (fault voltage) when fault signals are given. 5.4.3 Requirement The smoke alarm shall be capable of giving fault signals. 5.5 Polarity reversal test 5.5.1 Object Test whether polarity reversal causes damages to the smoke alarm. 5.5.2 Method 5.5.2.1 For smoke alarms which is not connected to the internal battery for power supply, reverse the polarities of the power lines of their external power supply, and maintain this condition for 2 h, unless smoke alarms give fault or fire alarm signals. If smoke alarms are interconnectable in use, then, also reverse the connecting lines between them. 5.5.2.2 For smoke alarms connected to the internal battery (including the standby battery) for power supply, if it is allowed by their structure, reverse the connecting terminals of the battery and the battery of smoke alarms and maintain the condition for 2 h unless smoke alarms give fault or fire alarm signals. 5.5.2.3 For smoke alarms powered by the battery (including the standby battery), use the fault voltage to supply power and observe whether smoke alarms give fault signals. 5.5.2.4 After the above-mentioned operation, re-connect the power supply of smoke alarms as specified in 5.1.4 and measure the response threshold value as specified in 5.2. Of the two response threshold values measured for the specimen in this test and in the initial sensitivity test, designate the greater as ymax or mmax and the lesser as ymin or mmin. 5.5.3 Requirement The ratio of the response threshold values ymax . ymin or mmax . mmin shall not be greater than 1.6. The smoke alarm powered by the battery shall give fault signals under the fault voltage. 5.5.4 Test apparatus Smoke tunnel. 5.6 Sound pressure test Designate the maximum response threshold value as ymax or mmax and the minimum value as ymin or mmin. 5.11.3 Requirement The ratio of the response threshold values ymax . ymin or mmax . mmin shall not be greater than 1.6. 5.11.4 Test apparatus Smoke tunnel. 5.12 Conformity test 5.12.1 Object To test the conformity of the response threshold value of the smoke alarm. 5.12.2 Method Number 18 smoke alarms in the order of 1 ~ 18 and measure the response threshold value in the “worst” orientation of the smoke alarm. For the smoke alarm having a variable response threshold value, carry out test by setting the response threshold value of the smoke alarm at the maximum-minimum limit values. Of the 18 smoke alarms, designate the maximum response threshold value as ymax or mmax and the minimum value as ymin or mmin. For the smoke alarm having a variable response threshold value, when setting at the minimum limit value, designate the maximum response threshold value as ymax(1) or mmax(1) and the minimum value as ymin(1) or mmin(1). When setting at the minimum limit value, designate the maximum response threshold value as ymax(2) or mmax(2) and the minimum value as ymin(2) or mmin(2). 5.12.3 Requirement 5.12.3.1 For smoke alarms having a fixed response threshold value. a) the ratio of the response threshold values ymax . ymin or mmax . mmin shall not be greater than 1.6. b) the minimum response threshold value ymin shall not be less than 0.2, and mmin shall not be less than 0.05 dB/m; the maximum response threshold value ymax shall not be greater than 3.0, and mmin shall not be greater than 2.0 dB/m. 5.12.3.2 For smoke alarms having a variable response threshold value a) the ratio of the response threshold values ymax(1) . ymin(1) or mmax(1) . mmin(1) and ymax(2) . ymin(2) or mmax(2) . mmin(2) shall not be greater than 1.6. After taking the other smoke alarm out of the damp heat test chamber, store it in the environment for 72 h at the temperature 15°C ~ 25°C and the relative humidity less than 70%; measure the response threshold value in the “worst” orientation as specified in 5.2. Compare the response threshold value measured using the two smoke alarms with the response threshold value measured in the conformity test of the two smoke alarms; designate the maximum response threshold value as ymax or mmax and the minimum response threshold value as ymin or mmin. In the damp heat test chamber, the surface of the smoke alarm shall be free from condensation when one environment transits to another. 5.18.3 Requirement a) during test, the smoke alarm shall not give fault or fire alarm signals; b) after test, the smoke alarm shall be free from coating damage and corrosion; c) the ratio of the response threshold values ymax . ymin or mmax . mmin shall not be greater than 1.6. 5.18.4 Test apparatus Test apparatus (damp heat test chamber) shall be as specified in 4.5.4 of GB 16838- 1997. 5.19 Vibration test (endurance) 5.19.1 Object To test the adaptability of the smoke alarm and its structural integrity when it is subjected to mechanical vibration other than multiple, repeated vibration. 5.19.2 Method Mount the smoke alarm and base in its normal mounting position, at the center of the beam bottom surface of the vibration test apparatus; connect to the power supply as specified in 5.1.4; make it remain in the normal monitoring condition. Adjust the test apparatus to make a cylindrical steel block, 1 kg in mass, drop from 700 mm high to the central part of the beam top surface, along the guiding device; the vibration area is 18 cm2 ± 10%; it will drop continuously 5 t.......Source: https://www.ChineseStandard.net/PDF.aspx/GB20517-2006 |