Construction Transformers
|
|
Koolatron Multi-Purpose Adapter 110AC to 12 Volts DC ( Model AC-15) $29.99 Power your Koolatron(r) Cooler/Warmer at home or office with this AC Adapter. For use with all Koolatron(r) 12V Coolers and warmers and other 12V items. Over-load and over-charge protected…. |
|
|
GE 45604 Z-Wave Technology Outdoor Module for Lighting Control, Black $18.00 WIRELESS LIGHTING MODULE WITH Z-WAVE TECHNOLOGYADDS REMOTE ON/OFF CONTROL TO OUTDOOR LIGHTSIDEAL FOR CONTROLLING LIGHTED HOLIDAY DECORATIONS FROM THE COMFORT OF HOMEWEATHER-RESISTANT ENCLOSURE FOR YEAR-ROUND USE1 Z-WAVE CONTROLLED OUTLETMAXIMUM LOAD OF Z-WAVE OUTLET: 600W INCANDESCENT 1/2 HP 120V MOTORMAXIMUM COMBINED LOAD OF BOTH OUTLETS: 15A 120V AC 1800W RESISTIVEUPC : 043180456045Shipping Dime… |
|
|
Tripp Lite PS3612 Multiple Outlet Strip 15-Amp 12 outlets 15ft Cord $35.85 12 outlet 15 ampsMultiple outlets wherever neededDesigned for vertical or horizontal power distributionTransparent on/off switch cover prevents accidental shutoffLifetime product warranty… |
|
|
Tripp Lite ISOBAR4ULTRA Isobar Ultra 4-Outlet Surge Protector (3330 Joules, 6ft Cord) $32.99 High-quality ponents near indestructible all-metal case and unique noise filtration systemRobust surge suppression circuits with sine-wave tracking offer extreme levels of protection against the heaviest surge conditions exceeding IEEE 587 category A & B specifications Reducing 6000V test surges to harmless levels under 35 voltsCombines large torroidal chokes ferrite rod-core inductors and HF/VHF … |
|
|
Transport To Oblivion $0.99 … |
|
|
Tripp Lite APS2012 2000W 12V DC to AC Inverter with Automatic Line-to-Battery 100/25-Amp Charger $1,089.00 Tripp Lite APS2012 PWRINV APS 2012 2000W 12VDC HWIRE… |
|
|
Alico Industries WLE-104BC Recessed New Construction LED Indoor Faceplate Options:Bronze Trim/Champagne Louvre, Light Bulb:(1)1.2w LEDs New construction, commercial grade, cast aluminum, wall recessed step light. Utilizing Luxeon LED technology, this product operates as a Master and Slave system. The Master houses the LED 4VA Class II driver. Torsion clips secure the faceplate to the back box for up to 0.25′ thick drywall. The WLE Series offers four facep… |
|
|
Alico Industries WLE-104WW Recessed New Construction LED Indoor Faceplate Options:White Trim/White Louvre, Light Bulb:(1)1.2w LEDs New construction, commercial grade, cast aluminum, wall recessed step light. Utilizing Luxeon LED technology, this product operates as a Master and Slave system. The Master houses the LED 4VA Class II driver. Torsion clips secure the faceplate to the back box for up to 0.25′ thick drywall. The WLE Series offers four faceplate … |
|
|
Cobra CPI1000 1000W 12V DC to 120V AC Power Inverter with USB Port $179.95 2000W PEAK POWER 1000W CONTINUOUS POWERUSB OUTPUTLED FUNCTION/STATUS METERMONITORS POWER CONSUMPTION 2 AC GROUNDED OUTLETSREMOTE ON/OFF CAPABILITYIDEAL FOR POWERING LAPTOPS PRINTERS 26″ TVS MINI-FRIDGES & COFFEE POTSUPC : 028377312687Shipping Dimensions : 12.76in X 8.66in X 5.20inEstimated Shipping Weight : 5.0… |
|
|
Tripp Lite PV150 PV 150W 12V DC to AC Portable Inverter with DC Auto Power Outlet $22.91 300 watts peak150 watts continuous power Low-battery alarm with auto-shut-off prevents deep battery dischargeLightweight design with all-metal housingClean quiet operation1 AC outlets 3 3/4″W x 1 3/4″H x 5 3/4″DPV-375: 4 1/4″W x 2″H x 7″DPV-600 6 1/4W x 4″H x 10 1/4″DIncludes DC cigarette lighter plug… |
A rule of thumb for transformers
As fuel costs rise and power outages become more prevalent around the country, the power generation and distribution system in the US has come into sharp focus. So too has the need to conserve energy and the need to invest in energy-efficient products of all types. Of particular interest are products like power transformers that remain energized and consume energy 24 hours a day.
The transformer is a critical component of the energy grid. If even a single transformer shuts down for a short period of time, a large number of households and commercial establishments are plunged into darkness resulting in a substantial economic loss.
Unfortunately, a significant amount of equipment in the public utility grid is over 40 years old and needs to be replaced in the near future. According to the Department of Energy (DOE), distribution transformers which are 30 years old or more can waste between 60 and 80 billion kWh annually. A better designed transformer could yield an annual energy savings of up to $1 billion. Thus, maintenance, retrofitting and purchasing of new transformers are fast becoming imperatives.
The Importance of Transformers
The transformer – particularly the distribution transformer – is the most important single piece of electrical equipment installed in an electrical distribution network. It also has a large impact on a network’s overall cost, efficiency and reliability. Selecting and acquiring energy-efficient distribution transformers which are optimized for -
* A particular distribution network
* The utility’s investment strategy
* The network’s maintenance policies
* Local service and loading conditions
- will provide definite benefits (improved financial and technical performance) for both utilities and their customers.
As climate change looms on the horizon, there is also an increased interest in the protection of the environment from greenhouse gas emissions. The regulatory requirement now is to install high-efficiency distribution transformers that have less energy losses, which eventually results in fewer pollutants being released into the environment.
Transformers and Losses
Transformers aren’t perfect devices; they don’t convert 100% of the energy input to usable energy output. The difference between the energy input and that which is available on their output is quantified as energy loss. There are two types of transformer losses: no-load losses and load losses.
* No-load losses
No-load losses are also referred to as core losses. This loss is calculated based on the amount of power required to magnetize the core of the transformer. Since most distribution transformers are energized 24/7, no-load losses are present at all times, whether a load is connected to the transformer or not. When lightly loaded, no-load losses represent the greatest portion of the total losses.
* Load losses
Load losses on the other hand, are those losses incident to carrying a load. These include winding losses, stray losses due to stray flux in the windings and core clamps, and circulating currents in parallel windings. Because load losses are a function of the square of the load current, they increase quickly as the transformer is loaded. Load losses represent the greatest portion of the total losses when a transformer is heavily loaded. Transformer loss data is readily available from most manufacturers.
Deciding which Transformer to Purchase
Many electrical distribution utilities claim that they purchase distribution transformers using some type of loss evaluation procedure. However, transformer cost continues to be a major factor in determining which transformer to buy. The components in a transformer, design, construction and installation all affect its cost. For example amorphous metal core transformers have 75% less no-load loss than a silicon steel core transformer but cost 25% more than a silicon steel transformer.
Transformer losses affect the cost of design, construction and installation. The transformer manufacturer typically incorporates the cost of losses in the cost of the transformer in optimizing transformer design.
Most companies buying transformers look at the quotation rather than the total cost of ownership (TCO). The TCO over the life of the transformer tends to be high in less energy-efficient transformers, while the initial cost is higher and the TCO low for energy-efficient transformers.
The payback period for investing in high-efficiency transformers however is relatively short – often less than 2 years. The Internal Rate of Return in energy efficient transformers is consistently above 10% and sometimes as high as 70%.
Making buying decisions for a large power transformer is more complex than simply comparing manufacturer prices. It requires a company to know its requirement and compare not just the cost of transformers but also the TCO over a two- to three-decade period. If this is accurately done, the cost-efficient solution invariably turns out to be the energy-efficient transformer, even though it has a slightly higher initial cost.
Pacific Crest Transformers and Energy Efficient Transformer Options
Pacific Crest Transformers (PCT) has a long history in the designing of custom, energy-efficient transformers for a large number of industries including Petrochemicals, mining and the renewable energy sector.
The company has over 90 years of continuous experience building Padmount, Station and Secondary Unit Substation Transformers. PCT was engaged in producing energy-efficient transformers even before the concept became fashionable and regulations made it mandatory for companies to re look at the way they consumed energy.
When purchasing transformers, there is no question of a ’short-term’; these infrastructure investments are typically made with 30 to 50 years of service in mind. Energy-efficient transformers are thus definitely the only way ahead, given the strong economic case they make over the long run.
Transformers and Losses
Transformers aren’t perfect devices; they don’t convert 100% of the energy input to usable energy output. The difference between the energy input and that which is available on their output is quantified as energy loss. There are two types of transformer losses: no-load losses and load losses.
* No-load losses
No-load losses are also referred to as core losses. This loss is calculated based on the amount of power required to magnetize the core of the transformer. Since most distribution transformers are energized 24/7, no-load losses are present at all times, whether a load is connected to the transformer or not. When lightly loaded, no-load losses represent the greatest portion of the total losses.
* Load losses
Load losses on the other hand, are those losses incident to carrying a load. These include winding losses, stray losses due to stray flux in the windings and core clamps, and circulating currents in parallel windings. Because load losses are a function of the square of the load current, they increase quickly as the transformer is loaded. Load losses represent the greatest portion of the total losses when a transformer is heavily loaded. Transformer loss data is readily available from most manufacturers.
Deciding which Transformer to Purchase
Many electrical distribution utilities claim that they purchase distribution transformers using some type of loss evaluation procedure. However, transformer cost continues to be a major factor in determining which transformer to buy. The components in a transformer, design, construction and installation all affect its cost. For example amorphous metal core transformers have 75% less no-load loss than a silicon steel core transformer but cost 25% more than a silicon steel transformer.
Transformer losses affect the cost of design, construction and installation. The transformer manufacturer typically incorporates the cost of losses in the cost of the transformer in optimizing transformer design.
Most companies buying transformers look at the quotation rather than the total cost of ownership (TCO). The TCO over the life of the transformer tends to be high in less energy-efficient transformers, while the initial cost is higher and the TCO low for energy-efficient transformers.
The payback period for investing in high-efficiency transformers however is relatively short – often less than 2 years. The Internal Rate of Return in energy efficient transformers is consistently above 10% and sometimes as high as 70%.
Making buying decisions for a large power transformer is more complex than simply comparing manufacturer prices. It requires a company to know its requirement and compare not just the cost of transformers but also the TCO over a two- to three-decade period. If this is accurately done, the cost-efficient solution invariably turns out to be the energy-efficient transformer, even though it has a slightly higher initial cost.
Pacific Crest Transformers and Energy Efficient Transformer Options
Pacific Crest Transformers (PCT) has a long history in the designing of custom, energy-efficient transformers for a large number of industries including Petrochemicals, mining and the renewable energy sector.
The company has over 90 years of continuous experience building Padmount, Station and Secondary Unit Substation Transformers. PCT was engaged in producing energy-efficient transformers even before the concept became fashionable and regulations made it mandatory for companies to re look at the way they consumed energy.
When purchasing transformers, there is no question of a ’short-term’; these infrastructure investments are typically made with 30 to 50 years of service in mind. Energy-efficient transformers are thus definitely the only way ahead, given the strong economic case they make over the long run.
To know more about <a href=”http://www.pacificcresttrans.com/home.html”>Liquid filled distribution transformers</a> check out Pacific crest transformers website.
http://www.pacificcresttrans.com/home.html
About the Author
mike dikinson-contributing writer for Pacific crest transformers.
Transformers the game 2007?
In this game how on earth do you defeat the Dump truck decepticon at the construction area with Iron Hide. I have tried everything and have been going at it with this Decepto Jerk now for 30 minutes. Any hints would be helpful
http://uk.videogames.games.yahoo.com/pc/alsoconsider/transformers–the-game-70859b.html
http://www.wonderdogsoftware.com/GUIDES_6/TRANS.htm
Genetic Bros – Construction (Transformers Soundtrack)
In by gone days all a contractor had to do was give the customer good quality and good service and he/she would be set. Then set back and let your customers do your selling for you. They would tell a friend and then that friend would tell a friend. Your phone would be ringing off the hook. I remember as an Architectural designer some days I would have up to four people wanting to schedule appointments for designs. Those days are long gone! But Fear Not! Click Here For Help
