Optical Communications Manufacturers - CPbay.com Optical Communications Manufacturers - CPbay.com
 
Five Things You Didn’t Know About LED Light Bulbs
If you’ve heard about residential led light bulbs, you probably know that they’re energy-efficient, last a long time, and are pricier than other lightbulb technologies. I’ve been using LED lights in my home for several months now, and overall the transition has been good. As you consider your lighting options, here a few things that you might not know about LEDs. LEDs are cooler. When you’re running fans or an air conditioner this summer, having burning-hot incandescent bulbs just makes it harder to manage the heat. LEDs run much cooler than incandescent bulbs and significantly cooler than CFLs. Online retailer EnergyCircle actually measured the difference and found that a halogen bulb, a type of incandescent bulb, ran at 327 degrees! A Cree LED downlight was measured at 107 degrees and a Philips Par38 CFL worked at 167 degrees. That’s not to say that heat isn’t at all an issue. LED bulbs led tube manufacturer do get hot but the heat is dissipated by metal heat sinks that wick away the heat from the light source itself. Keeping them cool with heat sinks or even liquid cooling, as Switch Lighting is doing, is important to ensuring they last as long as advertised. You get instant full light. You get the full brightness of an LED bulb when you turn it on, which is an advantage over CFLs in a couple of ways. For starters, you don’t need to wait for full light if you’re running in and out of a room. But frequent cycling also degrades the life of CFLs, one of the reasons that CFLs in some cases don’t last as long as expected. I’ve become more conscious of this and put LEDs in places where lights are cycled on and off quickly. CFLs, meanwhile, are in light fixtures and lamps which typically stay on for extended periods. Consumer Reports found turning CFLs on and off in less than 15 minutes degraded their life. LEDs don’t attract bugs. Pixi Lighting, which makes LEDs, lists “no bugs!” (that is, insects) as one of the reasons to use LEDs. But if you look at discussions online, it’s not so clear-cut. The stated reason that bugs don’t fly toward LEDs is because bugs are attracted to ultraviolet light and at least some LEDs don’t give off this type of light. But that’s not universally true for all types of LEDs, according to people who have commented online. In one discussion, an employee from EnergyCircle said that most residential LED bulbs give off almost no UV light. In an unscientific test last night at my house, I saw moths and mosquitoes fly right past my outdoor LED bulb; they were not attracted to the light. Consumer LED bulb maker Pharox advertises its bulbs as having no UV, so it’s something worth checking when you’re shopping around. LEDs come in funny shapes. Lighting manufacturers have tried to make LED bulbs as familiar-looking as possible, most importantly by having a screw-in connector. But there are limits to mimicking the Edison-style bulb. “Snow cone” LEDs, where the top half is a bulb shape, best resemble incandescent bulbs but light is given off in only one direction. So you’ll get more light from the top of a desk lamp, for example, than the bottom. CFLs or incandescents give off light in all directions. The most recent bulbs to come to market address this light dispersal problem very well. I’ve been testing a Lighting Sciences Group 60-watt equivalent for the last week or so and it does indeed give off far more even light than the company’s own snow cone-type bulbs. The price for the more even light dispersal is odd-looking bulbs. The LSG bulb has a squat disk for a light source and the rest of the bulb is a heat sink made of metal fins that make up most of the actual bulb. Philips’ LED bulbs have a crown-like light source and a similar aluminum heat sink. But their recently released 75-watt equivalent bulb has a noticeably longer heat sink than the 60-watt equivalent Philips LED, which is something to consider. When I tried it at home, the 75-watt equivalent, called the 17-watt A21 LED, was too long to fit into a small overhead fixture. You will need to learn some lighting lingo. We still talk about 60-watt and 75-watt equivalent bulbs because that’s what we’re accustomed to. But some manufacturers are using new labels that give people far more information than brightness, which is worth understanding as lighting gets more diverse. Lumens, of course, measure the amount of light, with a 60-watt equivalent giving off at least 800 lumens. But LEDs are also sold by color temperature, either warmer yellow light or cooler white light. And then there’s color rendering index, with the highest being the best for light quality. Warmer color lights will be more familiar since they’re closer to the yellow glow of a CFL or incandescent. But I found I like the cooler, white light of the Lighting Sciences Group bulbs, rated at a cooler 3000 Kelvin, which I find a little cleaner. As for color quality, I can’t put my finger on why, but I’ve been very happy with the light from a Pixi bulb which has a 96 color rendering index–higher than the others I have. Bonus: 40-watt equivalents bulbs are underrated. Some of the first general-purpose LED bulbs I tested were rated with the light output of a 40-watt equivalent. I found that they were not quite enough to light up a whole room, but they do the trick in more places than I thought. For example, I have a small LED for an outdoor light and one in the basement. These aren’t spots where I’ll spend time reading a book so these energy-sippers have fit in nicely. More imformation about in Cpbay
Published Date:
06/12/2012
Modified Date:
06/12/2012







Blurred fantasy LED wine glass lamp
image Lady wit love wine, alcohol allows blood acceleration, but also stimulating hormone instant upgrade to achieve visual hallucinations, when you see LED lighting House volley flew glasses, eye-catching light, doubting whether drunk In fact, this is just designers use LED lights LED Display , slightly modified to achieve different blurred lighting effects. The Netherlands design team OOOMS the creative LED bulbs designed chic glasses, warm light through the dim glass lamp cup, creating the wonders suspended in mid-air, and light intertwined, generate Cup Gong staggered romantic illusion.   image image image More imformation about led distributor and china led manufacturer in cpbay
Published Date:
09/11/2012
Modified Date:
09/11/2012







Butterfly wall lamp
Although this butterfly lights can not move, but it gives an almost certain dynamic manufacturer in the next an improved version to allow it to move up, as more vivid. Different from the ordinary butterfly decorative lights, this section butterfly lamp coated with organic phosphor, thinner and lighter than the decorative lights. Both sides of the wings like the irregular current, it dance like a butterfly cocoon in the middle of the night is dark. It also can make it through a power adapter or four AAA batteries in a relatively bright environment becomes more bright. But I still like it in the dark look, but also save energy. More led lighting and GU10 LED in cpbay
Published Date:
12/07/2012
Modified Date:
12/07/2012







Selecting from Different kinds of Driven Light Bul
As it definitely become practical if perhaps Encouraged bulbs ended up primarily of just one type, facts are these cutting-edge lighting fixtures remedies may be found in lots of varieties. Must be certainty, selecting from different kinds of Driven lamps isn't a very simple process, seeing as there are many different ways during which this sort of high efficiency light sources are classified. Most of the time even though, it'll be possible to attention solely relating to some tremendous multiple led lighting manufacturer although nevertheless being sure that your obtain might truly come to be definitely worth revenue. Persons attracted to understand more about all of these different types should truly stay with me. Brought light bulbs are often classified as per building. All this time, there are nearly four years from Xmas trees bulbs, which may be famous from 1 one more with regard to sunshine together with life expectency. With respect to people however, it's a sufficient amount of to figure out which often concerning three several years for Brought bulbs, the 1st building maintain a pool of best perfection standing and he has that quickest forecasted life. In spite of this, many of these primary iteration Driven bulbs are also the most cost effective. As expected, irrespective of getting typically the most able minded and many durable of all versions, the last age group for led manufacturer may also be the most costly. Dependent on styles requirements, element . most innovative LED-based lighting style treatment may not remain the most appropriate. Similarly, merely hitting Encouraged bulbs out of the box with little imagined on the subject of expected use might end up being the remorseful approach, irrespective of how economical many bulbs may seem. Certainly, Brought light bulbs are likewise classified as per employ. Guided light bulbs with respect to standard objectives, for example smoking cigarettes areas, are usually generally known as A-Lines. Additionally, the familiar with enhance a broad place will be labelled as Flood-type Brought about light. Spot-type Directed light sources however, obtain another. What exactly may appear that should be negligible functional difficulties basically impact the actual suitability about Encouraged lamps if used for several software. Apart from start using, the task of deciding on coming from different varieties of Xmas trees lighting could perhaps necessitate to think of an additional cycle on which these types of lighting fixtures remedies can be divided: dimmability. The majority of Headed lights don't seem to be best with dimmers, playful perhaps with the merest improvements on the electric latest. Happily, you'll also find Brought about light bulbs which might be dimmable, in turn permitting superior surroundings handle and even bigger stamina benefits. Such dimmable light bulbs still, can be compared to common version. In conclusion, whenever assigned from which to choose several types of Brought lights, no doubt it is extremely important to understandthat such lighting alternatives are in fact grouped in lots of procedures. Being mindful of this, it would possible to have the most suitable personal preference within the fairly handy way by just asking ones self important questions in order to make the transaction. Specifically, it's necessary to look into concerning that light iteration are the best, for which function would most likely any light bulb supply, not to mention when dimmability is a must. When giving answers to these kinds of basic questions, feel comfortable knowing that one could be capable to buy the greatest Xmas trees lamps. Further information regarding Toxic gas sensor plus electronic sensors throughout cpbay.
Published Date:
15/06/2012
Modified Date:
15/06/2012







Don't judge a supplier by its name
For those of us who live and breathe the rarified vapors of technology based automation, it&rsquos pretty hard to fathom how life existed without electronic automation. Yet, it has been a short 30 years since the venerable PLC became anything more than a novelty outside of the Big 3 in Detroit. Sometime in the late 1970s, microprocessors changed our lives forever. Since those early days, the power of these tiny chips forever changed the way we think about manufacturing.
From no-touch sensors to motor temperature monitors and back again to arch-flash safety devices, microprocessors have infiltrated every part of the automation manufacturer world. In recent years, communication capability and stand-alone electronic intelligence has pushed its way into all reaches of &ldquothings automatic.&rdquo Microprocessor-enabled valves control liquid flow based on the input of electronic float switches. The possibilities seem limitless and the market reflects that fact.
Today, the size of the automation market has grown so vast, it is difficult to measure. The very definition of the market is openly argued. And, each individual segment of that automation market becomes exponentially harder to measure and define. To illustrate this point, let&rsquos talk about the two main disciplines of the automation market: discrete automation and process automation.
Discrete automation is characterized by production of individual parts. Automobile, light bulb and electronic manufacture can be thought of as discrete automation. Process automation is characterized by the production of a fluid or gas. Oil refineries use process automation. But what kind of manufacturing is tire making &ndash where process and discrete assembly steps are combined? The definitions get cloudy very fast.
Let&rsquos just say the world of automation&mdashboth discrete and process&mdashis huge. A two-year-old news release from the ARC Advisory Group projected the process automation side of the market alone to be $79 billion by 2010 (and that is just half of the equation). Cheap electronics, new manufacturing techniques and the competitive pressures of the world market keep the automation train rolling along &ndash even in poor economic conditions.
And at the same time...
At the same time these techno-electronic breakthroughs were manifesting themselves in the automation products business, the world of business was in flux. The last quarter of the twentieth century brought a fundamental shift in the way business is conducted. During the early stages of the shift, automation breakthroughs allowed for a reduction in manufacturing labor. Later improvements in white collar productivity allowed for a similar reduction in office administrative employees. But, there was more ahead.
Changes in world economic conditions brought right-sizing, outsourcing and professional service contracts. To illustrate this point, we need only look at the typical plant engineering department of the 1970&rsquos. The department was a self-contained group with resident electrical, mechanical and civil engineers on staff. It was not uncommon for these departments to number in the hundreds. During the 1980&rsquos, this changed dramatically. Entire departments were re-engineered to a handful of generalists - more project managers than engineers.
Consolidation hit the world of manufacturing in 1980&rsquos. Government figures indicate 1989 was the top merger year. In the automotive industry alone, the number of companies dealing as suppliers to the Big 3 automakers dropped from 30,000+ in 1988 to less than 8,000 in 1999. These same consolidations affected the companies&rsquo distributors which did business across North America. These numbers from Thomas Financial Securities Data (Mulligan 1999) illustrate the changes, which surely would have affected wholesale distribution during these times.
Mergers in Billions of Dollars in Business
Business Services
63 Billion
Communications Equipment
31 Billion
Machinery
26 Billion
Chemicals
25 Billion
Drugs
24 Billion
Instrumentation
23 Billion
Electronics
18 Billion
Distributors from all lines of trade were affected by this consolidation. Nowhere was this consolidation felt more than in those supplying products into the industrial manufacturing sphere.
Finger pointing&hellip
During the early days of automation, plant engineering departments served the role of integrator. Engineering departments provided detailed specifications to suppliers of mechanical, electrical, hydraulic and other components. The distributor answered specification questions, helped anticipate spare part needs and provided timely delivery. The engineering group did the rest.

As the 1980&rsquos unfolded, the newly downsized engineering departments found they could no longer handle the same workload. Opportunistic distributors added technical expertise to support their &ldquomain line&rdquo products. But, new developments in business practices continued to affect the flow of products and expertise.
Economic pressures, driven by downturns in the economy, forced many major customers to look at the advantages of single sourcing products. No longer were there three suppliers from each of the main lines of trade. Instead, customers began to consolidate their purchases. With a single distributor serving each of the supply disciplines, vendor lists were dramatically trimmed. But, problems persisted.
The advancement of microprocessor controlled communications created issues when products which were supposed to work together didn&rsquot. Many end customers felt as though they were left holding the bag. The term &ldquofinger-pointing&rdquo was coined to describe the issue. When a programmable logic controller didn&rsquot communicate with an intelligent valve or an electric motor burned up when &ldquoproperly&rdquo applied with a variable frequency drive, the customer felt disenfranchised and lost.
Distributors began to morph&hellip
Distributors live and die based on their ability to add value to their end customers. Many distributors saw the &ldquofinger-pointing&rdquo phenomenon as an opportunity. And, a few began to refocus their product offerings. The addition of complimentary products provided value (single source supply & no finger-pointing). The newly refocused products drove competitive differentiation for the distributor in the market.
As distributors looked for ways to expand their business, selling additional products to a core group of loyal customers made great sense. Selling products which complimented their existing product mix provided value for the customer. Often, the new products slowly moved the distributor away from their historical past.
The changing world of motion control&hellip
Nowhere is this more evident than what many now call &ldquomotion control.&rdquo Long before the world of electronic automation, precise motion control has been around since the early days of the industrial age. For instance, the tolerances required in gun manufacture developed in the late 1800&rsquos were roughly equivalent to those being used today. The precise motion control used for automobiles, jet engines and even the space orbiters was possible long before modern motion control techniques were developed.
Motion control as we know it today combines the technologies of mechanical, pneumatic, hydraulic and electronic components. Because there is no scholarly definition for motion control today, allow me to provide one.
&ldquoMotion control: The hardware, software and human interface devices required to precisely control speed, acceleration-deceleration, position or orientation. The system must be programmable and capable of changing aspects of the control to match operating parameters.&rdquo
Is it any wonder that so many of today&rsquos leading distributors provide value in the motion control arena? Power transmission distributors, electrical distributors, fluid power distributors and automation solution providers all compete for a role in this market. Many times, the distributor with the greatest expertise has a historical background in a completely different technology. Nowhere is this more evident than those members of the Power Transmission Distributors Association (PTDA).

While the name conjures up mental pictures of gears, belts and bearings, the members of PTDA exemplify this migration of technologies. Case in point, a recent informal survey conducted by River Heights Consulting of Davenport, Iowa discovered that members of PTDA are responsible for over $800 million of the new motion control business.
One such member of PTDA is Eastern Bearings, Inc. of Waltham, MA. Eastern Bearings employs value-add specialists in motion control and a number of other specialized technologies. During a project at a waste handing facility in Maine, Eastern Bearings&rsquo motion specialist proposed a new motion control system which combined technologies from multiple manufactures to provide a crane system control which simplified maintenance and reduced operating cost. The integrated system was engineered and manufactured &ldquoin house&rdquo. It included detailed configured HMI screens and automated troubleshooting aids. Did all this come from a &ldquobearing&rdquo supplier? No, it came from a 45-year old company with a proud history that happened to start off in the bearing business.
Everybody came from somewhere...
Today and in the future, there will be no electrical supplier, no hydraulic supplier, no mechanical suppler instead, there will be automation solution providers. Names continue, often carrying the proud mantra of the past. In the 1930&rsquos, bluesman Willie Dixon penned the song, &ldquoYou Can&rsquot Judge a Book by Its Cover.&rdquo A modern version might be, &ldquoYou Can&rsquot Judge a Distributor by the Product in Its Name.&rdquo
Remember our first point all of this automation market (we are so fond of) didn&rsquot exist just 40 years ago. Everybody came from someplace. Don&rsquot let supplier names fool you.
Published Date:
12/04/2012
Modified Date:
12/04/2012







Three-phase induction motor common failure analysi
Three-phaseinduction motor manufacturer applications is extensive, but by the long-running, various problems in a timely manner to determine the cause of the malfunction, and dealt with accordingly, is to prevent the failure to expand an important task to ensure the normal operation of equipment. One, the motor power can not move, but no abnormal sound, no smell and smoke A cause of the malfunction(1) Power did not pass (at least two-phase did not pass);(2) blown fuse (at least two-phase fuse);(3) The overcurrent relay tune too small;(4) control equipment wiring error. Troubleshooting(1) Check the power circuit breaker, fuses, junction boxes at a breakpoint, repair; (2) check the fuse model, fuse reason, a new fuse; to(3) adjust the relay settings and the motor with the;(4) The correct connections . Two, the motor power does not turn, and then fuse 1 Fault(1) one phase power supply, or the set of Route circle backward phase Connection;(2) The stator winding short circuit between phases; (3) stator winding ground;(4) stator winding connection errors; the(5) fuse cross section is too small;(5) power cord short circuit or ground. 2 Troubleshooting(1) check knife one phase is not Hao can be a phase wire power supply circuit; to eliminate the reverse fault; to(2) detect short-circuit point, be repaired;(3) eliminate the ground;(4) mistakenly identified then be corrected;(5) replace fuses; (3) eliminate ground location. Power motor does not turn a hum l.(4) Theelectrical induction motor of the cause of the malfunction 1, the rotor winding circuit (one phase wire) or a power loss of power; the(2) winding Lead the whole story termination right or wrong Winding reversed; (3) power circuit contacts loose contact resistance; load or stuck rotor; the(5) supply voltage is too low;(6) The small motor assembly is too tight or the bearing grease excellent; the(7) bearing stuck. Troubleshooting(1) to pinpoint a break to be repaired; (2) Check the winding polarity; determine whether the winding end of correct; (3) tighten the loose terminal screws, use a multimeter to determine the connector is false then, be repaired;(4) The load shedding or to detect and elimination of mechanical failure, the the(5) check is also prescribed surface connection misconnection Y; because the power wires too small so that the pressure drop is too large to be corrected, (6) re-assembly to make it flexible; replacement of qualified oils and fats;(7) repair bearings. 4, the motor is difficult to start, when the rated load, the motor speed below the rated speed more Fault(1) supply voltage is too low;(2) surface connected motor is mistakenly connected to Y; the(3) cage type rotor welding or broken;(4) given rotor partial coils connected wrong, reversed;(3) repair the motor windings to increase the number of turns too much; The(5) motor overload. Troubleshooting(1) measurements of supply voltages, trying to improve;(2) correct connection;(3) Check the open welding and breakpoints and repair;(4) The mistakenly identified then the Department, to be corrected;(5) The return to the correct number of turns;(6) load shedding. 5, the motor no-load current imbalance, phase difference between the large (1) the cause of the malfunction(1) rewind, three-phase stator winding turns are not equal;(2) The winding head and tail termination is wrong; (3) power supply voltage unbalance; the(4) windings inter-turn short circuit, the coil reverse fault. Troubleshooting(1) around to re-develop the sub-windings;(2) check and correct; (3) measurements of supply voltage, try to eliminate the imbalance;(4) The steep In addition to winding fault. Motor no-load, over load, the ammeter pointer instability, swing A cause of the malfunction(1) cage rotor BAR on solderability or broken bars;(2) The winding rotor failure (open circuit) or brush collector ring short circuit device, poor contact. Troubleshooting(1) detect broken bars to be repaired or replaced rotor;(2) Check the rotation sub-loop and fix them. 7, theac induction motor load current balance, but the value (1) repair of the cause of the malfunction 1, the stator winding turns to reduce excessive;(2) The supply voltage is too high; to(3) Y connected motor misconnection ?;(4) motor assembly, rotor mounted to the contrary, the stator core is not aligned, the effective length of less short;(5) The air gap is too large or uneven;(6) The overhaul of the removal of the old winding, improper use of hot-split method, the core burning. Troubleshooting(1) rewind the stator windings, to restore the correct number of turns; (2) to try to restore the rated voltage; (3) divert to Y;(4) The re-assembly;(3) Replace with new rotor or adjust the air gap; the(5) overhaul core or recalculate the winding, the appropriate increase the number of turns.
Published Date:
12/04/2012
Modified Date:
12/04/2012







Ocean Optics introduction of oxygen sensors and pH

Advances in high-performance sensor supplier materials and optoelectronics, new optical sensor can be used in the field of life sciences, pharmaceuticals, biotechnology, food and beverage processing. Compared with traditional electrochemical sensor technology, marine optics, optical sensors, the appearance of compact and customizable parameters, non-invasive measurements, and does not consume the sample. Ocean Optics Optical oxygen sensor distributor and pH sensors can provide accurate, real-time field measurements in a variety of media. This patented sensor coating material consumption of the sample, can be applied to the probe, self-adhesive acrylic patches and trace test hole. Optional add cover coating for general laboratory, food processing lines and rich hydrocarbon environment. Depending on its practical application, the pH value through the appearance of the color change to distinguish, while the oxygen content by fluorescence meter for precise measurement. The operating principle is: to add functionality to the tip of the fiber, adhesive films, such as patches, such as glass containers, and other flat substrate coating, the coating sol-gel-based in vivo loading aerobic sensitive fluorophores or pH indicator dye is characterized. Indicator material in the immediate environment can change the optical properties of the specific analyte determination of the response, and then by electronic devices. For oxygen, NeoFox, phase fluorescence meter can measure the partial pressure of dissolved oxygen or gaseous oxygen; pH, the response from the miniature fiber optic spectrometers measure the pH dye chroma (absorption). Ocean Optics optical oxygen sensor dealer and pH patch can break through the limitations of electrochemical oxygen sensing and pH sensing technology. The patch can be easily integrated in small biological systems for use in the fermentation field Bioflask ", and provide continuous, non-invasive type of key system parameters monitoring. The technology does not destroy the sealed environment under the premise of real-time monitoring of dissolved oxygen and pH, thereby freeing staff to better understand the workflow of the bioreactor, to promote the development of new biological products and fermentation processes.

Published Date:
12/04/2012
Modified Date:
12/04/2012







Three-phase induction motor common failure analysi
Three-phaseinduction motor manufacturer applications is extensive, but by the long-running, various problems in a timely manner to determine the cause of the malfunction, and dealt with accordingly, is to prevent the failure to expand an important task to ensure the normal operation of equipment. One, the motor power can not move, but no abnormal sound, no smell and smoke A cause of the malfunction(1) Power did not pass (at least two-phase did not pass);(2) blown fuse (at least two-phase fuse);(3) The overcurrent relay tune too small;(4) control equipment wiring error. Troubleshooting(1) Check the power circuit breaker, fuses, junction boxes at a breakpoint, repair; (2) check the fuse model, fuse reason, a new fuse; to(3) adjust the relay settings and the motor with the;(4) The correct connections . Two, the motor power does not turn, and then fuse 1 Fault(1) one phase power supply, or the set of Route circle backward phase Connection;(2) The stator winding short circuit between phases; (3) stator winding ground;(4) stator winding connection errors; the(5) fuse cross section is too small;(5) power cord short circuit or ground. 2 Troubleshooting(1) check knife one phase is not Hao can be a phase wire power supply circuit; to eliminate the reverse fault; to(2) detect short-circuit point, be repaired;(3) eliminate the ground;(4) mistakenly identified then be corrected;(5) replace fuses; (3) eliminate ground location. Power motor does not turn a hum l.(4) Theelectrical induction motor of the cause of the malfunction 1, the rotor winding circuit (one phase wire) or a power loss of power; the(2) winding Lead the whole story termination right or wrong Winding reversed; (3) power circuit contacts loose contact resistance; load or stuck rotor; the(5) supply voltage is too low;(6) The small motor assembly is too tight or the bearing grease excellent; the(7) bearing stuck. Troubleshooting(1) to pinpoint a break to be repaired; (2) Check the winding polarity; determine whether the winding end of correct; (3) tighten the loose terminal screws, use a multimeter to determine the connector is false then, be repaired;(4) The load shedding or to detect and elimination of mechanical failure, the the(5) check is also prescribed surface connection misconnection Y; because the power wires too small so that the pressure drop is too large to be corrected, (6) re-assembly to make it flexible; replacement of qualified oils and fats;(7) repair bearings. 4, the motor is difficult to start, when the rated load, the motor speed below the rated speed more Fault(1) supply voltage is too low;(2) surface connected motor is mistakenly connected to Y; the(3) cage type rotor welding or broken;(4) given rotor partial coils connected wrong, reversed;(3) repair the motor windings to increase the number of turns too much; The(5) motor overload. Troubleshooting(1) measurements of supply voltages, trying to improve;(2) correct connection;(3) Check the open welding and breakpoints and repair;(4) The mistakenly identified then the Department, to be corrected;(5) The return to the correct number of turns;(6) load shedding. 5, the motor no-load current imbalance, phase difference between the large (1) the cause of the malfunction(1) rewind, three-phase stator winding turns are not equal;(2) The winding head and tail termination is wrong; (3) power supply voltage unbalance; the(4) windings inter-turn short circuit, the coil reverse fault. Troubleshooting(1) around to re-develop the sub-windings;(2) check and correct; (3) measurements of supply voltage, try to eliminate the imbalance;(4) The steep In addition to winding fault. Motor no-load, over load, the ammeter pointer instability, swing A cause of the malfunction(1) cage rotor BAR on solderability or broken bars;(2) The winding rotor failure (open circuit) or brush collector ring short circuit device, poor contact. Troubleshooting(1) detect broken bars to be repaired or replaced rotor;(2) Check the rotation sub-loop and fix them. 7, theac induction motor load current balance, but the value (1) repair of the cause of the malfunction 1, the stator winding turns to reduce excessive;(2) The supply voltage is too high; to(3) Y connected motor misconnection ?;(4) motor assembly, rotor mounted to the contrary, the stator core is not aligned, the effective length of less short;(5) The air gap is too large or uneven;(6) The overhaul of the removal of the old winding, improper use of hot-split method, the core burning. Troubleshooting(1) rewind the stator windings, to restore the correct number of turns; (2) to try to restore the rated voltage; (3) divert to Y;(4) The re-assembly;(3) Replace with new rotor or adjust the air gap; the(5) overhaul core or recalculate the winding, the appropriate increase the number of turns.
Published Date:
12/04/2012
Modified Date:
12/04/2012



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