Usage and management of emergency lights
Types of emergency lights: portable emergency lights, fire emergency lights, energy-saving emergency lights, underwater emergency lights, rechargeable emergency lights, solar emergency lights, multifunctional emergency lights Light DC Fan DC-001 Emergency Light HX-628B Rechargeable Emergency Light HX-618C Emergency Light HX-628D Rechargeable Emergency Light
Use of fire emergency light: fire emergency lighting system
Abstract: The fire emergency lighting system mainly includes accident emergency lighting, emergency exit signs and indicator lights. It is set up to guide trapped people to evacuate or launch firefighting and rescue operations after the normal lighting power supply is cut off in the event of a fire. However, in the daily inspection, it is found that there are many problems in the selection, installation and use of fire emergency lamps. Therefore, reasonable selection of the power supply control mode and wiring mode of the emergency lighting system, and daily maintenance work will directly affect the function of the fire emergency lighting system.
Subject: Installation and Maintenance of Emergency Lighting Power Supply Control Mode
One. Reasonable selection of emergency lighting system power supply control mode
Currently in China The emergency lighting system used is mainly of independent control type with its own power supply. The normal power supply is connected to the general lighting power supply circuit, and the emergency light battery is usually charged. When the normal power supply is cut off, the backup power supply (battery) automatically supplies power. This form of emergency light has a large number of electronic components such as voltage transformation, voltage stabilization, charging, inverter, and storage battery inside each lamp. The emergency light needs to be charged and discharged during use, maintenance, and failure.
The other is the centralized control type of centralized power supply. There is no independent power supply in the emergency lamps. When the normal lighting power supply fails, the centralized power supply system supplies power. In this form of emergency lighting system, the complicated electronic circuits inside all lamps are omitted, emergency lighting lamps are no different from ordinary lamps, and the centralized power supply system is set in a dedicated room.
Compared with self-contained power supply independent control emergency lights, centralized power supply centralized control emergency lights have the advantages of convenient centralized management, user self-inspection, fire supervision and inspection, prolonging the life of lamps, and improving emergency evacuation efficiency. The system has good reliability, long service life, convenient maintenance and management, and low system price. However, since there is no backup power supply (battery) in the centralized power supply centralized control type emergency lighting fixture, if the power supply line fails, it will directly affect the normal operation of the emergency lighting system, so special fire protection requirements are laid for its power supply line. . The emergency lighting with its own power supply independent control has a backup power supply (battery) in each emergency lighting, so there is no special requirement for the power supply line, and the failure of the power supply line will not affect the function of the backup power supply. When the emergency lamp fails, it generally only affects the lamp itself, and has little impact on the entire system.
When choosing emergency lighting, the emergency lighting system should be selected reasonably according to the specific situation. Generally speaking, for new projects or projects with fire control rooms, the wiring should be unified as far as possible during the construction process, and centralized power supply centralized control emergency lighting should be used; Power independent control emergency lighting.
2. Problems that should be paid attention to when wiring emergency lights
(1) Several common wiring methods for emergency lights
In daily supervision and inspection, it is found that emergency lighting fixtures cannot be used normally due to wrong wiring methods. There are six common emergency lighting wiring methods:
(2) Precautions
1. Accurately grasp the characteristics of various wiring methods to avoid Blind wiring will not work as it should;
2. If emergency lighting is used as a part of normal lighting, three-wire controllable connection should be used.
3. For multi-storey public buildings, if there is no fire control center, the emergency lighting fixtures in various parts can be controlled by on-site switches (single light, single control or multi-light control) or in the distribution box. Centrally controlled three-wire connection.
4. For a project with a fire control center, in order to meet the requirement that the fire control center can turn on the fire emergency lighting on the fire floor and related floors when a fire occurs, the following diagrams (5) and (6) should be used. Wiring.
III. Installation and maintenance of emergency lights
1. In engineering design, in order to facilitate daily maintenance and management, fire emergency lighting is best arranged by floor Powered by a dedicated feeder circuit.
2. In order to ensure the reliability of the power supply for fire emergency lighting, the power supply should be supplied by the low-voltage emergency bus section of the substation, that is, when the diesel generator set is used as the emergency power supply, as long as the generator is put into use , it has electricity to continue to ensure power supply.
3. In a fire state, there is less smoke and more oxygen near the ground, and the instinctive response of people to evacuate is to bend over or crawl forward, so the local high-intensity lighting is more uniform than the high-level installation. efficient. Therefore, low-level installation should be promoted, that is, emergency lighting for evacuation should be provided close to the ground or at ground level.
4. The emergency lights are all discharged from the factory and must be charged for 20 hours before use.
5. The performance of emergency lamps in use should be checked regularly, and the continuous switch test should be passed every half month or one month to check the circuit conversion and the emergency function of the battery, and discharge to prolong the use of the battery life.
6. Do a good job of fire protection for power distribution lines, lay them in a non-combustible structure when they are installed in the dark, and the thickness of the protective layer is not less than 30mm; wear metal pipes when they are installed in the open, and brush fire-resistant paint on the outside of the steel pipes. Or adopt other fire protection measures; use fire-resistant cables or fire-resistant cables and wires for lines.
What is the difference between emergency lights and ordinary lights?
Emergency lights are generally designed in the shape of a cuboid, with long-distance searchlight functions and short-range large-scale lighting functions. Good quality LED emergency lights are generally white light, and there is absolutely no stroboscopic, so it is good for the eyes. And it is easy to carry, can be moved at home, and can also be carried to the wild for camping.
And ordinary desk lamps or rechargeable desk lamps are more common, not to mention, generally do not have long-distance searchlight function, and it is not convenient to carry.
The power used to charge the emergency lights is required according to the power size. The conventional ones are 6V4AH lead-acid battery, 6V4.5AH battery
