China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

[2013-12-04]

Fluorescent electronic ballast works: 220 volts rectified into DC , and then the next wave filter , then OTL transistor oscillator circuit composed by two high-frequency AC and DC becomes a boost , get a 300 + V AC 1000 + V peak around ,30-80KHZ frequency high voltage applied across the lamp , the light goes on . (That is, after the formation of a high-frequency AC voltage is rectified by the oscillation circuit , through step-up transformer to make the fluorescent light. ) Inductive ballast works:limiting lamp on and produce an instant high-pressure equipment should be called magnetic ballast, he was wrapped in wire made ​​of silicon steel core system to do so with the core of the coil in the instant power failure , it will produce high-pressure self-inductance , plus at both ends of the fluorescent tube electrode ( filament )...

[2013-10-28]

China standards for single- capped fluorescent life test conditions : 15 ~ 50 ℃ calm environment , head up ; 50Hz ± 0.5%, 220V ± 2%. National standards for average life expectancy : 5000h. Recent standards of the more important news is IESTM-21 document publishing . This is America, Illuminating Engineering Society Technical Committee after years of efforts to develop a test method . TM-21 can be inferred lumen maintenance of LED products , which is lit at different times after the LED light output. TM-21 is very important , and its importance is reflected in : LED life may be more than 50,000 hours , much longer than conventional lighting , has been tested in the end is impractical because lasted too long, and probably will , in its lifetime have been eliminated, and , LED will not be like other light sources as directly off , LED light decay is very slow , LED's "dead point" where it is still a topic of discussion . To better understand the importance of TM-21 , we first look at LM-79 and LM-80. LM-79 is the integrated control circuit and heat sink of the LED products for the electrical and photometric methods found , covering a total flux, electrical power , efficiency , chrominance and luminance distribution measurements . By LM-79 can calculate the initial performance of the entire lamp . However, LM-79 does not involve product reliability and lifetime measurements. LM-80 test is the different temperature LED package , array and lumen maintenance module , tested at least 6000 hours to 1000 hours each for advanced , recommended to test 10,000 hours . But even if the test 10,000 hours , but also far less than most LED products on the market that claim to life. TM-21 can be tested in a relatively small period of time to estimate the lighting is not the same after a long lumen maintenance dose to make up for an important performance testing vacancies , which is very important. However , TM-21 only covers the LED package , array and module testing, other components will affect lamp life , such as driving , thermal management and packaging , if these have been taken into account will be more meaningful....

[2013-10-28]

Lighting design should be chosen not only meet the requirements of functionality and quality of lighting, and easy installation and maintenance, low-cost long-running lamps, specifically should consider the following aspects: 1) optical properties, such as light distribution, glare control; 2) economy, such as lighting efficiency, initial investment and long-term operating costs and so on; 3) special environmental conditions, if any, risk of fire, explosion hazard, dust, moisture, vibration and chemical corrosion environment; 4) Lamp shape should coordinate with the building; 5) Lighting efficiency (η) High: η = ΦL / ΦO, depending on reflector shapes and materials, the optical port size, diffuse cover or grating shapes and materials; 6) compliance with environmental conditions IP rating. The high pressure sodium ballasts and lamps are a good match....

[2013-10-27]

The actual power metal halide lamp 35w should probably at 42 watts, because magnetic ballast and other accessories also consume some energy, it also depends on power compensation capacitor. But ordinary metal halide color is not good as fluorescent lamps, ceramic metal halide is better,but the cost is high. But metal halide lamp life is definitely not lost on energy-saving lamps. Significantly higher luminous efficiency and energy-saving lamps, energy-saving lamps can be said to be more energy efficient than the few. However, energy-saving lamps also has its advantages, energy-saving lamps and fluorescent light softer, more suitable for indoor use....

[2013-10-27]

The high-pressure sodium lamps, metal halide lamps, mercury lamps are gas discharge lamps. high-pressure sodium lamps, metal halide lamps, mercury lamps are gas discharge lamps, mercury lamps and metal halide lamps inside are filled with mercury vapor, xenon and argon, but mercury metal halide more than one thing - metal halide material, commonly known as metal halide pills. Mercury and metal halide same principle, are used as quartz glass discharge tube. Because it is two kinds of mercury vapor lamps have sent nearly white light, luminous efficiency generally 75lm / W. HPS inside filled with sodium amalgam, mercury vapor and xenon, sodium amalgam issue because it is golden brown. Conventional street with a maximum luminous efficiency generally have 120lm / W, because the high temperature sodium vapor can corrode glass, it is generally used as a sintered alumina ceramic discharge tube and prolong life. The above three lights are needed magnetic ballast and ignitor the cascade to work properly, but mercury can not trigger light, so very early filament instead of ballast for ease of use and improve light efficiency self-ballasted mercury...

[2013-10-26]

Toroidal magnetic ballast is a new energy-saving ballast system with silicon sodium tablets corresponding winding turns of enameled wire system made ​​of a magnetic ballast . As we all know , ordinary type E-shaped magnetic ballasts commonly used silicon steel core made ​​of stacked and subsequently on the sets made ​​by winding enameled package made ​​. Because E -shaped silicon steel sheet iron work in the plane of the magnetic field lines are arranged unevenly sparse outer ring , inner ring density , 90 ° inside corner of the highest density , while the four outer corners surrounding magnetic flux density is small. E-shaped silicon by itself limits the mechanical properties of the magnetic flux density can not be done appoint high, so in order to reduce eddy current loss of the E-shaped silicon steel sheets , tend to be very thin film thickness of each silicon steel sheet to an insulating interlayer , this makes up the core of the duty factor , the design of the cross-sectional area to be increased to compensate for the core , a corresponding increase in the circumference of each turn enameled undoubtedly addition to increasing the silicon steel sheet and enameled sodium loss of material , the ballast volume and weight were increased , in addition, increasing the ballast itself copper loss and iron loss , which increases its power loss. Therefore, the common type of E-shaped core ballasts bulky, heavy weight , high efficiency coil resistance is low, the current high pressure sodium street lighting in the most common is this common type of inefficient ballasts. In today's urban and rural road lighting , most luminous efficiency is higher adoption and high-pressure sodium lamps, ballasts and their corresponding sets of high and low working efficiency , energy saving or not, it's running reliability, longevity and integrated technology economic indicators , has an extremely important role in the use of new ballast is a priority. How to shorten the magnetic circuit , reducing the core size, reducing power loss ballast itself , increase efficiency , improve its cooling capacity , is ballast to explore the development work in recent years . Toroidal winding geometry of the loop with the magnetic field lines and curves to adapt, magnetic distribution is reasonable, optimal flux , iron loss is small . Application of existing technologies annular core flux density is perfectly placed to do 1.8T less....

[2013-10-26]

Magnetic ballast in use will be under the impact of high-voltage pulse . Starter fluorescent lamp ballasts are exposed repeatedly beating the impact of its own self-induced emf , high intensity discharge lamp ballasts, internally triggered exposed to the impact of self-induced emf . Foreign -triggered flip-flops are exposed to high voltage pulses. Each lamp startup process , the ballast winding layers and inter-turn have to withstand much higher than the supply voltage of the voltage pulse . Small power inductive fluorescent lamp ballasts used wire diameter smaller and more turns . Enameled film thickness is proportional to the diameter , fluorescent lamp ballasts used in type Ⅱ enameled Even so, the film thickness of only 1-1.5 Simi . And the prevalence of enameled copper wire drawing industry bigger glitch , copper partial core , low voltage resistance per unit thickness paint thinner and other factors make the enameled surface insulation weak point ( commonly known as the pinhole ) a lot . The ballast windings wound in and will inevitably lead to the phenomenon of stretching and scratching the paint . These factors all contributed to the ballast layers and inter-turn under high pressure in the instantaneous short circuit risks. If the winding shorted turns is large ( commonly known as acute short ) tend to blow the lamp filament without the risk of security failures. Short laps when there are fewer ( commonly known as chronic short ) , lamp starter and ballast can work, but due to other internal short-circuit current is larger circle will soon heat, the polymer film insulation fell so short extent constantly expand , creating a vicious cycle. This case, since the formation of an arc discharge within the lamp , the lamp current is significantly increased even though it is not open. This phenomenon is the result of overheating ballasts ranging since softened plastic fasteners in heavy ballast caused by falling under the action of the phenomenon , wounding hurt things , will cause the ballast weight and the surrounding combustible smoke fire, the formation of fire and fire, seriously compromising security . In the production of ballast products, as long as there is one thousandth of this phenomenon will seriously affect the incidence of corporate reputation and sales, if the incidence of one percent , then, given the quality of their products is notorious . Therefore, despite the inductive ballast failure rate was significantly less than electronic ballasts, but a problem occurs it is often fatal . To solve this problem , we recommend using the following two methods. First, using the string into the thermal fuse approach. According to the transformer principle known , although partial short circuit current of up to ten times the circle to the current value of the work several times , but the line at the current value increase was not much , because ballast preheat current is generally operating current of 1.3-1.5 times , such as use current fuse can not be smaller operating current . So into the line of the string into the current fuse approach can not be achieved after a short fuse and reliable protection purposes . After the temperature of the windings due to short working hours than normal temperatures rise significantly , into the line can be used in series with the thermal fuse approach. After using the windings shorted to the heat generated by the thermal fuse circuit, so as to achieve the shorted ballast failure does not produce security purposes . This method is known that the fail-safe in a foreign country . In a variety of small appliances imported almost all power transformers using this method . Using this method should pay attention to the following aspects: ① optional thermal fuse current should be allowed to pass reliably than the actual current through it in order to avoid too much current through thermal effects caused by the additional affect its operating temperature . Thermal fuse operation temperature should be selected to be significantly higher than the ballast lamp does not start abnormal operating conditions , the thermal equilibrium temperature , it can avoid the ballast windings not shorted , but when the lamp is in an abnormal malfunction . Suggested the use of the range of motion of 180-195 ℃ thermal fuse . Thermal fuse is installed in addition to the necessary electrically insulating dielectric outer ( Average Thickness 0.03-0.05mm), should be close to the heat source ( winding ) , do not , or by a thick medium to transfer heat through the air , or easily cause thermal fuse when the action or action discrete great problems with their achieve its proper role as insurance . Another way to solve the magnetic ballast circuit for ballast before dipping semi- insulating paint used more than five times the power supply voltage frequency, and five times the impact test or with continuous pulse generation high-voltage pulse test , which excluded the interlayer between turns poor insulation of semi-finished products , and preferably be able to test the product after vacuum impregnation way . Through the above measures can guarantee the basic product does not produce short circuit ballast . NOTE: The above is not a traditional ballast impact test conductor between the shell and iron high pressure tests. It is about the 1100V high voltage across the winding directly to the ballast and the action time. If you directly to the nominal frequency high voltage is applied across the ballast will definitely make too much current flowing through it do not meet the purpose of simulation , so only through the high- voltage frequency increased to at least five times the power frequency to achieve simulation test , the inverter can be used in actual use the method or methods used to obtain air generators used in this test suitable test power . Fluorescent ballast abnormal state , due to the starter circuit across the lamp redness caused by the phenomenon , but does not start and end of lamp life when used to transmit a cathode half-wave rectification effect caused by insufficient ballast phenomenon the safe use of some effect . The former state, the ballast is always in the preheating current through the state, the latter is because the operation of the starter repeated intermittently in the ballast through the preheating current state and the way through a half -wave pulse current state. In both cases, the ballast fever is much higher than the normal working hours . Therefore, energy-saving electric dare ballast design and lighting ballast weight injection molded components to withstand heat issues should be considered , should ensure that the ballast is in an abnormal state and to achieve long-term thermal equilibrium so that the heat generated may not bearing injection molded parts produced detrimental to the safety of thermal variations . Enterprises in the design of injection molding material selection should be carried out simulation test in order to ensure safety under abnormal conditions ....

[2013-10-26]

Magnetic ballast integrated quality index mainly depends on good design and reasonable process . To make energy-saving ballasts with good performance and get the best price-performance , you should pay attention to the following aspects: Magnetic Ballast shape and size selection , in the case of the same material consumption is directly related to the inductive ballast of the indicators . Extreme value according to the mathematical theory, the ballast section is rectangular , square, with minimal perimeter , and circular cross -section in the same condition week minimum length , which means that to minimize resistive losses of copper . In addition, if the ballast magnetic shorter the working time of the iron loss is smaller accordingly . But the shape and size of the ballast and lamps installed by the process feasibility size restrictions , so the case should be possible to move closer to these goals . The energy-saving ballast decreases due to their own power to make its own heat greatly reduced, but still need to pay attention to the problem ballast voltage characteristics . Ballast voltage characteristics make a good lamp current crest ratio decreased significantly, thus ensuring lamp life. Right choke ballast , good line current voltage characteristics make Yi wave decreased significantly, but also the lamp current zero-crossing time of the strobe reduced , so that the lights on the restart after the zero crossing voltage requirements also reduced ; when the supply voltage rises, the increase in the lamp power will not make too much. Rational design of ballast core cross-sectional area , maintain adequate magnetic gap ( magnetic gap length L ≥ IN/1.10Bm) and winding turns , will be able to good volt-ampere characteristics....

[2013-10-21]

Electronic ballast biggest disadvantage is its harmonic components contained in the larger, and the grid will cause the formation of harmonic pollution , thus breaking the three phase power . Furthermore, if a large number of electronic ballasts to work together, such as likely to cause tripping , electronic ignition or interference phenomena may also cause a lot of damage to electronic ballasts , or even cause a fire , resulting in significant economic losses. Therefore, we must take effective measures to suppress the harmonics ....

[2013-10-21]

The life time should be based on the whole lamp life. HPS include lighting, electrical accessories ( mainly hps ballasts ,ignitor ) and lamps, sodium lamps Average life expectancy for 3 to 5 years , energy-saving ballasts not less than 20 years, the lighting as well....