This standard specifies the test methods and performance specifications for various anti-theft alarm system power supply devices. Specific requirements for various system components are separately specified by other relevant standards, which should be used in conjunction with this standard. The purpose of this standard is to specify the requirements, test methods and performance specifications for power supply devices used in alarm systems. GB/T 15408-1994 Alarm System Power Supply Devices, Test Methods and Performance Specifications GB/T15408-1994 Standard Download Decompression Password: www.bzxz.net

National Standard of the People's Republic of China
Alarm system power units,test methods and performance criteria
GB/T 15408—94
IEC 839-1-2-1987
This standard is equivalent to IEC839-1-2 (1987) "Alarm system power units, test methods and performance criteria". Subject content and scope of application
This standard specifies the test methods and performance specifications for various anti-theft alarm system power units. The specific requirements for various system components are separately specified by other relevant standards, and their standards should be used in conjunction with this standard. The composition of the power supply shall be determined by the available power supply form and the requirements of the system. It shall consist of one or more of the following power supplies: a. primary battery
b. secondary battery (with or without plug-in external safe low voltage charger). c. Power supply device powered by AC power grid through safety isolating transformer: (1) without other components;
(2) with rectifier, output DC current: (3) with secondary battery and charger as backup power supply; (4) with primary battery as backup power supply; (5) with inverter or "switching type" power supply. d. The combined power supply of ab and e above. High voltage power supply used in some control centers is not considered in this standard. 2 Purpose
The purpose of this standard is to specify the requirements, test methods and performance specifications of power supply devices used in alarm systems. 3 Reference standards
Other IEC publications cited in this standard: 65 (1985): Safety requirements for household and general purpose electronic and related equipment powered by mains power 86: Primary batteries
285 (1983): Sealed cylindrical nickel-cadmium rechargeable single-cell battery 271: Basic terms, definitions and related numbers for reliability 300 (1984): Durability and maintainability management 509 (1976): Sealed button nickel pick rechargeable single-cell battery 622 (1987): Sealed square cylindrical cadmium rechargeable single-cell battery 623 (1983): Open square cylindrical nickel-radiated rechargeable single-cell battery 742 (1983): Requirements for isolation transformers and safety isolation transformers Approved by the State Administration of Technical Supervision on December 28, 1994 and implemented on August 1, 1995
GB/T 15408—94www.bzxz.net
839-1-1 Alarm systems, Part 1: Requirements, Chapter 1 General Other publications:
ISO 532—1575: Sound - Methods for calculating sound levels 4 Definitions
This standard adopts the following definitions:
4.1 Final voltage
The voltage to which a battery drops after discharge under specified conditions. 4.2 Power supply unit
A device that transforms and stores isolated power in an alarm system. It can be a separate device or an integral part of a control device or display device. It provides power for the normal state, alarm state and fault state of the alarm and system. 5 Requirements
5.1—Secondary battery
The primary battery shall comply with the requirements of ISO Publication 86. Unless its technical performance exceeds the specified requirements (e.g. lithium battery), the primary battery shall not cause the alarm system to be dangerous or its performance to be seriously impaired. 5.2 Secondary batteries
5.2.1 Any type of secondary battery can be used. For example, nickel batteries should comply with the relevant standards: -1IEC Publication 285
--IEC Publication 509
--IEC: Publication 622
...---IEC Publication 623
Other types of batteries should comply with the relevant IEC standards (when the standard is formulated). 5.2.2 When the power supply includes a primary battery and a charger, the minimum capacity of the battery can be calculated using the following formula: Cui: 1. 25(AX T1 -+ 1 XT)(A h3 Where:
T, and T are the warning and alarm time, respectively, and are the specified values ​​of the specific alarm system and component standards, in h. A1 is the total current consumption of the alarm system when the power grid is off and there is no alarm signal and fault signal (different from the "power fault" signal), in A. 12 is the total power consumed by the alarm system when it is in the alarm state, in A. 5.3 Power supply device powered by the power grid
The various types of power supply devices included in this standard are as follows: a. Power supply device that provides AC current through a transformer. h. Power supply device that provides DC current through a transformer and a rectifier. . Power supply device including secondary batteries and chargers The power supply arrangement including the inverter.
The above power supply arrangement can be used to form a power supply, and its requirements should be specified by the applicable implementation rules or standards. 5.3.1 Grid power transformer
The grid power transformer should use a safety isolation transformer and comply with the requirements of [EC Publication 742. If it is a capacitive load, the transformer should be appropriately derated.
5.4 Case temperature
When the ambient temperature is 0, the power supply device works at full load and reaches a stable state, the temperature of any part of its outer surface shall not exceed 80°C.
5.5 Environmental requirements
GB/T 15408--94
Environmental requirements are given in the standards for specific alarm systems and components. 5.6 Instructions and markings
The manufacturer or supplier of the power supply device shall provide detailed instructions to enable the user to use the device correctly. The instructions vary from device to device, but shall at least include the following:
Reasoning. For all network-powered devices
the voltage rating shall be the value measured at the mid-frequency value, unless the total frequency range exceeds the minimum frequency specified by 20%, in which case it shall be the value measured at the maximum frequency and minimum frequency respectively. (1) Input voltage range.
(2) Maximum output voltage.
(3) Output voltage at minimum input voltage under no-load and full-load conditions. (4) Output voltage at maximum input voltage under no-load and full-load conditions. (5) Designed operating frequency range.
h. For power supply devices that provide DC from transformers and rectifiers, in addition to =, the following should be specified: the output ripple voltage on the power line under severe conditions within the full range of input voltage and output current. C. For DC-AC inverters, in addition to a, the following should be specified:
(1) The waveform factor or other parameters of the output waveform under the worst conditions within the full range of input voltage and output current. (2) Load power factor limit or other restrictions on inductive loads. (3) Output frequency range at maximum and minimum loads (4) The highest peak output voltage within the full range of input voltage and output load. d. For DC-DC converters, in addition to a, the output ripple voltage under the worst conditions within the full range of input voltage and output current should be specified. e. When part or all of the power supply device is installed in the control device and the display device, the following instructions should be added in addition to a: (1) The output voltage at the interface between the power supply and the rest of the alarm system at the maximum or minimum output voltage, (2) The maximum continuous current flowing into the rest of the alarm system. f. The power supply device using primary batteries as a backup power supply is under consideration.
For composite power supply equipment composed of the above-mentioned various power supplies, in addition to A, the time required to switch to another power supply if one power supply fails should be specified.
5.7 Structure
5.7.1 Appropriate precautions should be taken to protect electronic components and electrical circuits from damage caused by battery charging or accidental leakage of electrolyte, mist and explosive gas.
5.7.2 If the battery is installed in a battery box, the output terminals of this battery box should be protected by appropriate measures to prevent inadvertent contact with metal parts.
5.7.3 The MTBF design value of the power supply device (including battery) under normal operating conditions is at least 60,000 hours, which can be calculated according to IEC publications 271 and 300.
5.7.4 Any replaceable fuse or similar device should be clearly marked with the rated value or component number near its connector. 5.7.5 Fault monitoring should be provided in accordance with the requirements of the standards of each equipment alarm system. There should be measures to connect the fault alarm signal to the control device and the display device. 5.8 Noise
The noise should not exceed the limit of Article 6.2.
5.9 Electrical components
GB/T15408-94
5.9.1 If possible, the components should comply with the requirements of the relevant IFE standards. When working within the specified ambient temperature range, the use value of the components should not exceed the rated value specified by the manufacturer. 5.9.2 The design of the terminals shall be such that they can tighten the conductors between the metal surfaces with sufficient contact corrosion pressure without damaging the conductors. 5.10 Electrical safety
The design of the power supply unit shall comply with the relevant requirements of IEC Publication 65. The safety isolating transformer shall comply with the relevant requirements of IEC Publication 742. 6 Test methods
6.1 Temperature test
When the ambient temperature is 40℃, the temperature of any part of the external surface of the power supply unit shall not exceed 80℃. The temperature of the casing shall be measured when it reaches a stable state. This test shall be carried out at full load and the secondary battery (if used) shall be fully charged. 6.2 Noise limit
The maximum sound level produced by the equipment measured at a distance of 0.5m from the surface of the equipment shall not exceed the octave sound pressure value specified in the following table. For the octave band with a center frequency exceeding 16 kHz, the maximum permissible sound pressure is 2 dB. During the measurement, the equipment shall be in normal working condition, such as being placed in a suitable guide frame and then fixed. The sound pressure in the frequency band should comply with the provisions of the standard 1S532, and the same principle also applies to those frequency bands with center frequencies exceeding 16kHz. Octave band center frequency, Hz
Additional remarks:
This standard was proposed by the Ministry of Public Security of the People's Republic of China. This standard is under the jurisdiction of the National Security Prevention and Reporting System Standardization Technical Committee. The main drafter of this standard is Li Chuande.
Octave band sound pressure·dB
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