4.2 out of 5 stars 26. If the spacing is too tight, the weight of the lamps will ride on the face of the base instead of the pins. VIVOSUN 315W Ceramic Metal Halide CMH Grow Light Fixture with Italian Vega Aluminum Hood Designed for Even Coverage, Built-in 120/240V Ballast and Upgraded Cooling, ETL Listed 4.1 out of 5 stars 24 $199.99 $ 199 . Lithonia Lighting OFL 100M 120 LP BZM4 Premium Flood Light with 100-Watt Metal Halide. When one lamp fails in a two-lamp series magnetic circuit, the second lamp may continue to operate, but at a lower brightness. Lamp wattages range from 20W to … All discharge lighting systems offer visual (and sometimes audible) clues when problems or failures exist. After they stabilize, observe the light fixtures. This is one of the most serious maintenance problems in an HPS lighting system. An HID lamp often is higher in wattage rating. A metal-halide lamp is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides (compounds of metals with bromine or iodine).It is a type of high-intensity discharge (HID) gas discharge lamp. Discharge lamps usually operate with a ballast specifically designed to provide the proper starting and operating voltage for the lamp. Of course there's more to lighting maintenance than lamp replacement, particularly with discharge lamp systems. This looseness at the ends allows lampholders to bend away from the center. They have a re-strike time of 10 to 20 minutes. On the other hand, a series sequence ballast operates lamps in series (meaning if one lamp fails the other will fail or glow dimly). Also, make sure to check the voltage at the point of connection to the electrical distribution system. An indication of the high-pressure-sodium (HPS) lamp's normal EOL is on/off cycling, since the aging lamp requires a higher voltage for operation than the ballast can supply. Rapid-start (RS), high output (HO), and 1500mA T12 lamps (along with the preheat type requiring use of a starter device) all have similar characteristics. If the outer bulb breaks or shatters in a safety line of MH lamps, power to the lamp interrupts. Here's what you should look for in a lamp's appearance: After identifying any abnormal fixtures, you have to find out which component (lamp, ballast, fixture, or electrical supply) is the cause. This lamp version is also suitable for parking lot and garage lighting. Operating conditions, such as lamp burning position and normal variations in supply voltage or ballast characteristics, can affect lamp color and light output of MH lamps. NO. If only one cathode gets the heating voltage, the lamp will fail to start or it will be slow starting. An incorrect lamp-and-ballast combination will exhibit the same symptoms as a bad bulb. If properly installed, HO and 1500mA lamps should have the boss or cover of their recessed double-contact ends out of sight. This condition results from any one of the following: Corrosion or foreign material on base pins or holder contacts; Heavy premature end darkening (usually at only one end) is a good indication that one cathode is not properly heated and, therefore, the heater circuit is incomplete. Instead of the usual on-again, off-again cycling, this version of the HPS lamp goes out without any cycling. Generally, your troubleshooting task won't be this simple, since more than one factor usually contributes to component failure. During its burning hours, the wattage increases. If you don't find any major differences between the two, you should energize the lighting system. Unalux lamps operate on lagtype Mercury ballasts only. You can use this latter type in an open fixture, where increased fixture efficiency and lower-maintenance costs are important. These ballasts meet CAN ICES-005 (A/B) / NMB-005 (A/B). Short lamp life can result from ballast problems. The ballast open-circuit voltage of these lamps is about three times the normal lamp operating supply voltage. Check for possibility that lamp is operated on ballast designed for higher... 2. Operating conditions, such as lamp burning position and normal variations in supply voltage or ballast characteristics, can affect lamp color and light output. You can test the ballast capacitor with a suitable analog-type ohmmeter, set at a high resistance scale. 2.3 Quartz Metal Halide (QMH) Metal Halide lamps have an efficacy of 80-115 lumens per watt and have a life between 10,000-20,000 hours. Of course there's more to lighting maintenance than lamp replacement, particularly with discharge lamp systems. The data sheet tab has a list of the proper component sizes for most metal halide and High Pressure Sodium applications. Connect the meter's test leads to each terminal. When you energize a rapid-start lamp circuit, a low-voltage transformer in the ballast provides cathode heating. During operation, an HID ballast produces heat and usually receives some heat from the lamp it serves. Many lamp types currently offered, such as metal halide and high pressure sodium lamps, are physically interchangeable, but not electrically interchangeable. Then, with the electrical power off, interchange the lamps. You also have to properly connect them, operating within specific limits. Ballast troubleshooting. Symptoms of lighting system problems. Note: Mercury lamps will operate satisfactorily on ballasts designed for Metal Halide lamps of the same wattage. M100MLTLC3M500K 100 Watt 4-Tap 120-277V 60hz Magnetic MH Ballast Operates (1) 100W M-90, M-92, Or M-140 Lamp. You should replace a failed lamp immediately, as this situation can also cause starting circuit damage. Now, you can disconnect the capacitor from the circuit. If the "abnormal" appearance shifts to original "normal" system or fixture, the problem is in the lamp; not the ballast, fixture, or system power supply. In some cases, you'll find two wires using one slot and, although there are two spring clips inside the socket, both wires are set under one. At this point the HPS lamp could When installing lamps with exposed bi-pins, make sure the positioning guide (an embossed mark on the metal end cap) is opposite the entrance slot of the lampholder before inserting. 25% Plan to Finance Home Improvement Projects by Borrowing from Contractor, Emerald Cities-Boston Launches Contractor Academy. 1. HID TROUBLESHOOTING GUIDE These suggestions are intended to serve as a ... Mercury and Metal Halide lamps at end of life tend to emit low light output along with ... the end of life. What troubleshooting techniques can you use? To run a test on the low voltage side of the metal halide ballast, you would begin by removing the nuts from the wires that come from the power feed side of the ballast. Specialty varieties of Metal Halide lamps are used in sporting stadiums and industrial applications where light quality is important. 99 A wiring diagram is a streamlined standard photographic representation of an electric circuit. The family of arc discharge lamps includes fluorescent and high-intensity-discharge (HID) light sources. If the lampholders are too far apart, the pins may ride on the edge of the lampholder rather than making contact along the full width of the metal piece. If the MH lamp starts and a new HPS lamp does not start, the ignitor probably needs to be replaced. Thus, you must match a discharge lamp and ballast. Wiring diagrams for Venture® standard metal halide ballast products are provided on this page. The ballast data tables in our catalog indicate the page number and reference letter corresponding to the correct diagram for each ballast product. 500W metal halide luminaires are impossible for traditional probe start metal halide ballasts to achieve so pulse start metal halide ballasts have been deemed the efficient replacement. Capacitor King has a full line of Aerovox lighting capacitors, and HID ignitors always in stock, always for less. Because of this relatively long life (coupled with a slow reduction in lumen output), you should replace these lamps well before they reach their average rated life. Poor contact at the pins can result from improper lampholder spacing in the lengthwise direction, with the lamp end held too tightly or too loosely. It shows the components of the circuit as simplified forms, as well as the power as well as signal connections in between the gadgets. Leaking compound (except for a small amount at the lead holes, which is normal), cracking or brittle insulation, and discoloration on the can are all indications of ballast approaching, or having reached, end of life. Because the size of the arc tube and mixture of materials in the tube differ for each HID lamp type, each has its own operating and end-of-life characteristics. The metal-halide (MH) lamp will drop in lumen output from 7% to 20% during the first 100 hrs of operation, depending upon lamp wattage. If that's the case, tighten it. Turn off the branch circuit power first; then discharge the capacitor by placing a screwdriver or other piece of metal across its terminals. Fig. They are heralded because of the quality of light they produce. Defective Ballast This voltage beginsarc conduction in the lamp. Make sure you disconnect this starter circuit, since its high-voltage starting pulse can damage some multimeters. 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