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  Sun Vina

 Niềm tin tỏa sáng

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Tổng lượt truy cập: 42865
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English

OPEN LETTER

LIGHTING SOLUTIONS OF FACTORIES AND WAREHOUSES

 

To: Our valued customers

Firstly, we would like to send our most respectful greetings and best health wishes to you, our valued customers.

Our company includes members with a great experience in distribution and installation of electrical devices. Responding to the movement of power saving launched by the Ministry of Industry and Trade, and realizing the benefits of smart electrical devices to our customers, we would like to share our knowledge and experience. We hope that the knowledge and experience would help our customers to have better choices in line with your own work requirements and financial saving.

I. GENERAL INSTRUCTION ABOUT LIGHTING SYSTEM OF FACTORIES, WORKSHOPS, WAREHOUSES:

1. Lighting is one of the factors that affect the value of an enterprise

-) During visiting an enterprise, one of the first factors that you, our valued customers, visually assess is a lighting system. Therefore, you will be easily impressed by a good lighting system.

-) A high-quality lighting system creates a visual environment, almost like natural light. It comforts eyes of workers and reduces fatigue when they are working at a high-intensity during a continuous and prolonged period.

-)  A high-quality lighting system also improves the efficiency of an enterprise

The improvement of a lighting system will enhance the working efficiency of employees, and minimize errors, labor accidents, etc. Thus, the enterprise will operate more efficiently.

-) A high-quality lighting system reduces electricity cost (save 40-60% of power)

 

 

2. Brief description of lighting system of factories, workshops, warehouses:

GENERAL REQUIREMENTS FOR LIGHTING ENVIRONEMNT

  • Ensure illumination required for each working position
  • Distribute brightness in a lighting space, avoid glare to workers
  • Create the appropriate direction of light, without a shade
  • Color temperature of light must suit to jobs and colors of surfaces in the working area
  • Color regeneration of light must suit to each job
  • Reduce light flashing of lamps
  • Reduce maintenance, repair which affect the production process
  • Maintain the parameters of light during the term of use.

 

Now, we would like to introduce to you about the best lighting technology today that meets almost all of requirements of a good lighting system. It is Light Emitting Diode technology.

 

II. INTRODUCTION ABOUT LED LIGHTING

LED (Light Emitting Diode) technology published by a group of Japanese scientists has been granted the Nobel Prize in Physics; this invention marks the advent of lighting technology that can change the world. In Vietnam, in the opinion of many people, LED lamps with expense cost are only appeared in luxury places. However, in fact, owing to the great advances of technology, LED lamps have been popular today and appeared in everywhere. The completely new lighting formulas bring a lot of benefits to people:

1. Higher efficiency and quality of lighting than those of Incandescent lights, fluorescent lamps and halogen lamps:

Fluorescent tubes have the luminous efficiency of 50 – 70 lumen/watt. Meanwhile, LED tubes have the luminous efficiency of 90- 110 lumen/watt. Thus, one 25W LED tube will have the same luminous efficiency as that of a 36W fluorescent tube.

2. Longer working life of LED lamps, up to 40000 – 60000 hrs.

3. Saving 40 - 60% of power

4. Operating even in case of weak power, voltage of 90 – 265V

5. Quicker, nearly immediate, time of lamp turning on/off

6. Low heat emission

7. No noise during use

8. Low flashing during turning on/ off and using

9. Low hazardous waste affecting the environment

 

 

III. CALCULATION ABOUT COST TO REPLACE THE LED LIGHTING

 

Old technology lights

Led lights

Capacity 1 Piece (W)

270 W = 250W + 20 W

120W

250 W is lights capacity

 

20W is Ballast capacity

 

Using timer (hour)

720 hours = 24 hours/day x 30 day/month

720 hours

Quantity of using lights (piece-pc)

100 pcs

100 pcs

Capacity of                                  100 pcs/month (KW)

270W x 720 hours x 100 pcs

= 19,440,000W

120W x 720 hours x 100 pcs

= 18,720,000W

= 19,440 KW

= 8,640 KW

The average unit price of electricity

2000 VND / 1 KW

2000 VND / 1 KW

Total electricity cost in 1 month

38,880,000 VND

17,280,000 VND

Total electricity cost in 1 year

466,560,000 VND

207,360,000 VND

Cost replace of 100 pcs LED lamps

0

285,000,000 VND

Total cost in 1 year

466,560,000 VND

492,360,000 VND

Difference

- 25,800,000 VND

Cost after 1 year

Losses 25,800,000 VND

COST OF ELECTRICITY IN THE SECOND YEAR

Total electricity cost in 1 month

38,880,000 VND

17,280,000 VND

Total electricity cost in 1 year

466,560,000 VND

207,360,000 VND

Cost replace of 100 pcs LED lamps

0

0

Total cost in 1 year

466,560,000 VND

207,360,000 VND

Difference

+ 259,200,000 VND

Cost after 2 year

 SAVING 233,400,000 VND

More, Longer working life of LED lamps, up to 40000 – 60000 hrs and warranty to 24 months.

So, We can see that:

  1. Saving cost of electricity will payback after 13 months replace.
  2. From the second year onwards, we will save 233,400,000 VND per year.

IV. CALCULATION ABOUT COST TO REPLACE THE LED TUBE

 

Old technology lights

Led lights

Capacity 1 Piece (W)

46 W = 36W + 10 W

25W

36 W is lights capacity

 

10W is Ballast capacity

 

Using timer (hour)

720 hours = 24 hours/day x 30 day/month

720 hours

Quantity of using lights (piece-pc)

1000 pcs

1000 pcs

Capacity of                          

  1000 pcs/month (KW)

36W x 720 hours x 1000 pcs

= 25,920,000W

25W x 720 hours x 1000 pcs

= 18,000,000W

= 25,920 KW

= 18,000 KW

The average unit price of electricity

2000 VND / 1KW

2000 VND / 1KW

Total electricity cost in 1 month

51,840,000 VND

36,000,000 VND

Total electricity cost in 1 year

622,080,000 VND

432,000,000 VND

Cost replace of 1000 pcs LED tube

0

150,000,000 VND

Total cost in 1 year

622,080,000 VND

582,000,000 VND

Difference

+ 40,080,000 VND

Cost after 1 year

SAVING 40,080,000 VND

COST OF ELECTRICITY IN THE SECOND YEAR

Total electricity cost in 1 month

51,840,000 VND

36,000,000 VND

Total electricity cost in 1 year

622,080,000 VND

432,000,000 VND

Cost replace of 1000 pcs LED tube

0

0

Total cost in 1 year

622,080,000 VND

432,000,000 VND

Difference

+ 190,080,000 VND

Cost after 2 year

SAVING 230,160,000 VND

More, Longer working life of LED tube, up to 40000 – 60000 hrs and warranty to 24 months.

So, We can see that:

  1. Saving cost of electricity will payback after 11 months replace.
  2. From the second year onwards, we will save 230,160,000 VND per year.

Notes:

  1. LED lamps with the selected power for comparison as mentioned above have the same luminous efficiency as that of compared lamps
  2. Cost of electricity prices are approximate
  3. Loss power is calculated based on the statistics of the UNEP Environmental program 2016
  4. Expenses of LED lamps are approximate.

Assessment:

  1. LED lamps have many outstanding advantages compared to common lamps such as light efficiency, light quality, working life, and safe.
  2. During continuous use of a large number, LED lamps will save 40 - 60% of expenses (including expenses of new purchase and replacement).

 

As far as we know, your valued company demands to use many lamps to provide light to your factories. Thus, we would like to introduce our products and services to you and hope that we can partially contribute to your success.

LED lamps will be appropriately used based on the installation location, purposes, and lighting frequency.

Therefore, we would like to kindly ask you to make an appointment in your valued company so that we would introduce our products and provide more detailed advice.

We are looking forward to receiving your support and cooperation.

Special thanks.

Business manager

Vu Dinh Thien

Tel: 01259 828 828 

 

 

Frequently Asked Questions about LED Technology and Fixtures

 

If you don't find what you are looking for, just contact us with any questions you have no matter how simple or complex they may seem. We are here to help!

1. What are LED Lights and do they save energy?

All our LED lights and bulbs are energy saving that are designed to replace incandescent, fluorescent, CFL, metal halide, high pressure sodium and halogen lights in your office, facility or business. They will reduce your energy consumption by at least 40%, and as much as 80%, depending on the light you choose and the light we are replacing. With LEDs lasting up to 200,000 hours, we can also reduce your maintenance on your lighting.

2. How do LEDs Work?
LEDs are comprised of 3 main components: the LED's (the chip set that produces light), the driver (converts AC to DC) and the heat sink (to keep everything cool). LEDs take DC power from the driver and create light. The heat sink captures heat from the LEDs and the drivers. Although LEDs produce significantly less heat than the light bulbs we have been used to over the past century, the heat they produce must be managed. The better this is done, the longer the life of the product. LEDs also performs the job of converting electricity to light more efficiently than other light sources, that is why we can replace a 65W incandescent light bulb with a 12W LED bulb.

3. What are the benefits of replacing your ordinary bulbs with the LED?
There are many benefits. Here is a list of a few:
    a. An immediate reduction in your electricity bill. 
    b. Less heat. LED fixtures are extremely efficient converting electricity into light. 
    c. LED Bulbs last a very long time, from 30,000 to 200,000 hours. 
    d. They are virtually indestructible.
    e. They do not contain mercury or other hazardous materials
    f. Highly recyclable - with no hazardous parts, you can easily reclaim most of the parts in an environmentally safe way.

4. How much money can you save when converting to LED?
It all depends what you are converting. Incandescent to LED, fluorescent to LED, Metal Halide to LED. Fortunately, we built a very simple and information Energy savings calculator. Enter in a few fields or select one of our existing energy savings scenario, and let it calculate your energy savings. We tried to make it simple and easy to use.

5. Can LED bulbs be used with dimmer controls?
Yes and No. First, not all LEDs are dimmable. The driver must be designed to allow dimming. Secondly, you must purchase the right type of dimmer. Most retail stores now carry dimmers specifically designed for LED bulbs. Please note, if you purchase a non-dimmable LED bulb and try to dim it, it will cause the bulb to fail and also void the warranty.

Some of our industrial and commercial LED fixtures (high bays, floods, area lighting, retrofits) work with a 0-10V dimming system. 0-10V dimming requires special wiring and a special type of dimmer.

6. Do they contain any hazardous or heavy metals like Mercury?
No, LED bulbs do not contain mercury or any other hazardous metals or chemicals. CFL's and fluorescents do contain a very small amount of mercury that needs to be disposed of correctly. So when your LED bulb eventually stops to work, you don't have to worry about costly or special disposal procedures. 

7. What color temperatures are available with LED bulbs? 
Color temperature for light bulbs is measured on the Kelvin scale. LED Bulbs come in a variety of colors, but the most common are in a range from 2700K to 7500K. The unfortunate thing is that the only consistent measurement is the Kelvin scale, Many manufacturers like to use terms like Day White, Natural White, Warm White and Cool White, but there is not a standard that defines a Kelvin temperature to associate with those terms. The general rule is WARM (2700K) to COOL(6500K+). The warmer the light, the more yellow tones, the cooler the light, there are more blue tones.

Here are the typical range of color temperatures on MyLEDLightingGuide:

    2700-3200 - WW - Warm White
    4000-4500 - NW - Natural White
    5000-5500 - DW - Day White
    6500-7500 - CW - Cool White

8. What type of bases are available?
LED Bulbs are the perfect retrofit for your existing light fixtures. We have standard bases, candelabra, standard or Edison (E26) , mogul (E39), MR16 and other typical bases that are common with incandescent and halogen installations. For fluorescent tubes, we have bi-pin, single pin and HO Ends. We carry PL based bulbs in G23, GX23, G24 and GX24 bases. 

9. What are the sizes of the bulbs? How do they operate in comparison to the original light bulbs?
In most cases, are bulbs are the same size if not slightly smaller than the bulbs they replace. That is because LED technology packs a lot of light in a small package.

10. What's the difference between LED and CFL?
Both lights are energy efficient light sources that are much more efficient than the bulbs they replace. Here is a small list of the differences between CFLs and LEDs:
    a. CFLs are the spiral tube like bulbs. They are really mini fluorescent bulbs with self contained ballasts. They contain a small amount of mercury. LED bulbs are the new style looking bulbs with heat sinks and round mini globes. They do not contain mercury.
        b. You can replace a 22W CFL bulb with a 11W LED bulb.
        c. LED bulbs are instant on, instant off. CFLs take 30 seconds to 1 minute to warm up after they are turned on
        d. LED bulbs are not affected by turning them off and on. CFL bulbs are, as this will reduce their life.

11. Can LEDs be used in outside lights?
Yes. Some bulbs are designed with water-proof fittings. Others need to be kept in a water-tight fixture. Read all instructions and manuals before using a LED bulb outdoors.

12. Will the light levels decrease over the life of the bulb?
Yes. They will fade as the bulb gets near the end of its normal operating life. But it is very gradual and hardly noticeable. This is called Lumen Degradation and is denoted on the website as L70. L70 is the amount of time the light takes to get to 70% of the initial lumen output.

13. How long do the bulbs last and what sort of warranty is associated with your LED bulbs?
Most of our bulbs come with either a 3 or 5 year manufacturer warranty. Warranties only apply for normal use of bulbs and do not include misuse or usage for which the bulb was not intended to perform. All our warranties are parts-only warranty. We do not cover the cost of labor or shipping. 

14. How many lumens do I need to replace 400W Metal Halide fixture?
There is a lot that goes into answering this question. DesignLights Consortium has indicated in their specifications that you need at least 10,000 lumens to replace a 400W Metal Halide. Some other factors come into play, like surface reflectivity, obstructions and other source of light, such as natural light sources coming into the building. MyLEDLightingGuide designs light solutions. We are product agnostic, we will select the best product that meets your needs. So we have the ability to replace 400W Metal Halide with 10,000 lumens up to 30,000 lumens. We do find that you need more lumens indoors to do a proper replacement than you do outdoors.

15. How many lumens do I need to replace 400W Metal Halide High Bay?
We find that the typical range is as low as 17,000 lumens and as high as 23,000 lumens. Photo-metrics plays a major part in determining how much you need, spacing, and reflectivity of the environment. As we said above, we have found that you need more lumens indoors than you need outdoors to replace 400W Metal Halide.

16. What are the steps required to replace a fluorescent tube in an existing fixture?
There are several steps, but essentially this is no more difficult than a bulb and ballast replacement.
    1. Remove the fluorescent tubes, and then remove the ballast.
    2. Replace the existing tombstones (only if necessary). This step may be required with single ended powered tubes if you have shunted tombstones.
    3. Rewire the fixture to accommodate the LED tubes.

Note: there are also ballast compatible tubes that allow you to convert to LED by simply removing the old fluorescent tube and replacing it with the LED tube. Click Here to see our ballast compatible tube.

Our internal driver LED Tubes use AC current, and then converts the power to DC within the internal LED driver to light the LED's. There are some tubes that can be driven from the fluorescent ballast, but we do not supply those tubes as we see fluorescent ballasts as a maintenance item. Ballasts consume about 4+ watts per fluorescent tube installed, so leaving the ballast in place reduces the energy savings as well.

We also can supply externally driven LED tubes. With these tubes, the driver is externally housed outside the tube, and is usually installed where the fluorescent ballast was located. External drivers act the same way as internal drivers; they accept AC power, convert it to DC which is supplied to the LEDs in the tube.

In the case where you have a native DC system (such as solar systems) you are best to look for externally driven LED tubes and forgo the installation of the driver. You will have to make sure the DC power that is supplied to the fixture is compatible with the DC power requirement of the tubes.

17. What is single ended power and double ended power mean in terms of fluorescent tubes?
In single ended powered tubes, you power only one end. This type of installation is referred to as un-shunted. Since the tube has two pins on that end, you would send line to one pin and neutral to the other. (think of line and neutral as the black and white wires of electrical wire)

In double ended powered tubes, you power both ends, one with line source, the other with neutral. This type of installation is referred to as shunted.

In most cases, our tubes our single ended powered tubes. It conforms with the latest UL standards for safety. Proper installation of our tubes in existing UL fixtures maintains the UL certification of the existing fixture.

We can also provide new fluorescent ends (tombstones) so that you can convert over to single ended powered tubes.

18. What are ballast compatible LED Tubes?
ballast compatible tube is one where you can pull out the existing tube, leave the ballast installed, and install the LED tube. 

19. Do Ballast Compatible Tubes work with all ballasts?
No, but they work with most electronic ballasts.

20. What is L70?
L70 is the amount of time it takes for a light to degrade to 70% of initial lumen output

21. When I buy LED, should I buy based on watts or lumens?
Always buy based on lumens, watts is a number that is used to determine how much energy it takes to produce those lumens. It is important to pay attention to lumens per watt, or lm/w. The higher the number, the less energy you will need to produce the light. You will notice that some lights take less energy to produce the same amount of light, and this is something you should watch for. Typically, the higher the ratio, the better.

22. What component of the LED system is typically the first to fail?
Almost always, it is the driver. That is why it is important to know who makes the driver in the LED fixture or retrofit you purchase. Brand names like Meanwell and Philips are good. A LED product with a 1 or 2 year warranty is an indication of how good the driver is in that product. Typically a good driver should last more than 50,000 hours.

23. What is the most common reason LEDs fail?
Heat. Heat is the enemy of electronics, the hotter it is, the shorter the light. However, with good design, you can create a light or fixture that can withstand some high heat environments. Typically a fixture or bulb with an external driver will last longer than an integrated fixture that has the LEDs and driver as one unit.

24. What is CRI?
CRI is Color Rendering Index. It is a measurement of the quality of light. Where as lumens is a measurement of the quantity of light, CRI is the measurement of quality. It is a scale between 0 and 100. 0 is bad, 100 is great. LED's typically are in the 70-95 range. The higher the CRI, the more expensive the LED chip, and therefore the more expensive the product itself.

25. What is DesignLights Consortium (DLC)?
DLC is DesignLights Consortium, the governing body that certifies the quality and efficiency of LED Lights. It is a standard similar to Energy Star. Where as Energy Star is for home owner type products, DLC is for commercial grade LED products. A DLC Qualified product may be eligible for rebates. Your local utility designates whether you are eligible for rebates or not, and it varies between utility companies. Currently there are two standard, DLC Standard and DLC Premium. DLC Premium is more efficient and will save you more money in terms of operating costs.

26. What's better, new fixtures or retrofitting?
That's not a simple answer. For example, if your fixtures are relatively new and in good shape, retrofitting is a very good option. If your fixtures are old and deteriorating, then you might want to consider a new fixture. Both new and retrofit should last a long time. Both should perform well. Retrofitting is not prone to failure if you purchase the right LED retrofit kit to replace your existing bulbs. So the simple is there are no simple answers, but you can click here to learn more.

Have Any More Unanswered Questions?
If you still have questions left unanswered after reading this page, please contact us. We will answer literally any question you have related to saving energy and LED technology / products. No question is too stupid to ask, so ask away!