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

The light ballast delivers the correct commencing voltage, operating voltage and present on the lamp to initiate and sustain the arc. HID lamps have a damaging resistance characteristic, which leads to them to draw an rising amount of present, therefore require a present limiting device. The ballast delivers these functions. There are many unique ballast types used for for HID lighting. Basically, you can find two main distinctions among ballasts: "lag circuit" and "lead circuit" ballasts. The present in lag form ballasts is controlled by an inductive resistance in series with the lamp, whereas in lead style ballasts it current control is presented by each inductive and capacitive resistances in series together with the lamp.

Now these, lag and lead sort circuits may be produced in a number of diverse approaches, each and every with thier personal qualities and benefits and drawbacks.The easiest lag circuit, is actually a single core and coil positioned in series with all the lamp - this is often referred to as the Typical Electrical power Element ballast. Note, there is certainly NO capacitor utilised on this circuit. The problem with this particular variety of circiut is the power element is about 50% lagging, therefore the title normal or reduced power factor. This sort of circuit tends to get sensitive to fluctuations in line voltage, and is not recommended for fluctuations over 5%. The line existing at commencing problems can be around 50% greater than ordinary operating current.

To improve the electrical power factor on the circuit, a capacitor is connected across the input lines. The capacitor's major function right here will be to proper the energy factor, increases it to all-around 90%, and minimizes the beginning existing draw, therefore enabling additional ballasts to be run over the exact same circuit. Note the capacitor won't have an impact on the lamp circuit.

CWA - Frequent Wattage Autotransformer is an additional circiut utilized in ballasts. This is a lead kind circuit and it is applied in most modern mercury lighting programs. This ballast style includes a substantial reactance autotransformer and capacitor in series together with the lamp. In contrast to the 2 circuits outlined above exactly where the capacitor only serves to provide a correction towards the electrical power aspect, the capacitor right here varieties a significant ballasting function, and lets the lamp to operate with better stability beneath fluctuating voltage situations. It really is one of the most efficient circuit, and hence most well-known.

The circuits stated above are employed generally with mercury vapor lamps. The James lamp is intended being a substitute for mercury vapor lamps, and therefore calls for a ballast ideal for mercury vapor lamps. The ANSI designation of mercury vapor ballasts for 250W lamps is H-37 and for 400W is H-33. So in concept, any ballast with all the H-33 designation need to drive a 400W James lamp.MH ballasts, carry out a great deal such as the CWA ballasts for mercury lamps, and have the ANSI designation M-58 for 250W and M-59 for 400W. Generally, you can find that the ballasts used for aquarium lighting have dual rating M-58 & H-37, M59 & H-33. Consequently these ballasts can be employed for each MH and MV lamps. But remember that these are CWA ballasts.

Now the James lamps, in the pamphlet that comes together with the lamps, says "250W Reactor or Autotransformer kind Mercury ballast without peaking capacitor. Do not use on Regulator (CW and CWA)" They recommend a Large Energy Element ballast.

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