What does switch do?
Switch is a company based in Las Vegas, Nevada, that develops and operates the SUPERNAP data center facilities and provides colocation, telecommunications, cloud services, and content ecosystems. [1] [2] Switch was founded in 2000 by Rob Roy, CEO and the organization's principal inventor and chief engineer. [3]
What is switchgrass used for?
Switchgrass (Panicum virgatum) is a tall prairie grass that, alongside being grown as food for cattle, is commonly used ornamentally in garden spaces. A warm-season grass, you won't see growth until the late spring, but it provides interest through most of the year.
What is a switchyard?
Power Plant Switching Station (Switchyard) A station in the power transmission system at which electric power is transformed to a conveniently used form. The station may consist of transformers, switches, circuit breakers and other auxilliary equipment.
Where does switchgrass grow in the US?
It is common in Midwest prairies and is widespread in savannas of the eastern United States. There are several switchgrass varieties to choose from and its high tolerance for different planting sites makes ornamental switchgrass a great choice for any landscape.
What is switchgrass used for?
With its spreading rhizomatous roots and clump-forming habit, switchgrass is ideal for use on sloped areas prone to erosion. It's also used for adding height and contrasting interest in perennial borders, as a seasonal screen, for growing en masse in wild meadow gardens, or around the edges of ponds. The flower stalks are also popular for use in dried flower arrangements.
How tall does a switchgrass plant grow?
Some of the most popular or unique include: ‘Blue Tower’ – a very tall cultivar, with distinct bluey-green foliage, that can grow to reach 8 feet in height. ‘Dallas Blues’ – with wider leaves than most switchgrass varieties it forms in very dense clumps.
How to propagate switchgrass?
Switchgrass can easily be propagated through the division of clumps. It's best to do this in the spring as they need warm soil to establish. Division is recommended every few years anyway, as the center of the clumps can begin to die out, and this will help to boost their vigor.
What is a flower stalk used for?
Its also used for adding height and contrasting interest in perennial borders, as a seasonal screen, or for growing en-masse in wild meadow gardens or around the edges of ponds. The flower stalks are also popular for use in dried flower arrangements.
Can switchgrass be fertilized?
Once established, rhizomatous switchgrass rarely needs additional feeding with a fertilizer. Too many nutrients can cause the grass stalks to droop.
Is switchgrass low maintenance?
Although switch grass benefits from plenty of sun, it can adapt to a wide range of temperatures and soil conditions and is very low-maintenance. It's also resistant to disease and not bothered by pests.
Does switchgrass grow in shade?
Switchgrass prefers a full sun position. This will ensure vigorous growth, tall and upright stalks, and the most interesting color. It can handle part shade, but be prepared for the stalks to droop and the clumps to be less tightly formed.
What is switch grass?
Switchgrass ( Panicum virgatum) is an upright prairie grass that produces feathery delicate flowers from July to September. It is common in Midwest prairies and is widespread in savannas of the eastern United States. There are several switchgrass varieties to choose from and its high tolerance for different planting sites makes ornamental switchgra ss a great choice for any landscape. Providing height, flow, and drama, planting switchgrass brings it all to the decorative garden.
What is Ornamental Switchgrass?
The flower plume will persist well into fall and bears glossy red seeds. The foliage is bluish green most of the time and produces a haze of soft color in the landscape. Switchgrass is a perennial plant that has incredible versatility and hardiness, growing well in USDA zones 5 to 9.
What type of soil does switchgrass grow in?
Switchgrass thrives in sand, clay, or loam soil. The soil does need to be well drained and have minimum nutrient levels. That being said, it is always a good idea to incorporate organic matter to the planting hole, such as compost. Switchgrass is set into the ground at the same level it was grown in the nursery pot.
When should switchgrass be sheared back?
For the best appearance, the plant should be sheared back to within a few inches (8 cm.) of the soil line in late winter to early spring. This will allow the air to circulate better and sunlight to penetrate to the new growth.
Why do ornamental plants undergo breeding and development?
Successful ornamental plants undergo breeding and development to increase desirable characteristics and minimize problems. There are several cultivars available:
Is switchgrass a good choice for a landscape?
There are several switchgrass varieties to choose from and its high tolerance for different planting sites makes ornamental switchgrass a great choice for any landscape. Providing height, flow, and drama, planting switchgrass brings it all to the decorative garden.
Is switchgrass a perennial?
The foliage is bluish green most of the time and produces a haze of soft color in the landscape. Switchgrass is a perennial plant that has incredible versatility and hardiness, growing well in USDA zones 5 to 9.
What is an earth switch?
EARTHING SWITCH – also known as ground disconnect, which used to connects the equipment to a grid of electrical conductors buried in the earth on the station property. It is intended to protect people working on the grounded equipment.
What is a substation?
SUBSTATION. A station in the power transmission system at which electric power is transformed to a conveniently used form. The station may consist of transformers, switches, circuit breakers, and other auxiliary equipment. Its main function is to receive energy transmitted at high voltage from the generating station, ...
What is disconnect in electrical?
DISCONNECT – is an easily removed piece of the actual conductor of a circuit. The purpose of disconnects is to isolate equipment. Disconnects are not used to interrupt circuits; they are no-load devices. A typical use of disconnects is to isolate a circuit breaker by installing one disconnect on either side of the circuit breaker (in series with the breaker). Operation of disconnects is one of the most important and responsible jobs of a power plant operator. One error in isolation of equipment, or the accidental grounding of line equipment, can be a fatal mistake.
What is a current transformer?
CURRENT TRANSFORMER – Current transformer are used with ammeters, watt meters, power-factor meters, watt-hour meters,compensators, protective and regulating relays and the trip coil of circuit breakers. One current transformer can be used to operate several instruments, provided that the combined burden does not exceed that for which the transformer is designed and compensated. The current transformer is connected directly in series with the line.
Is a ground wire a preventive device?
OVERHEAD GROUND WIRE – by a ground wire is meant a wire, generally of steel, supported from the top of transmission-line towers and solidly grounded at each tower. It is considered a preventive device, but it does not entirely prevent the formation of travelling waves on a line.
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What is switchgrass used for?
Easy to grow and fast to establish, switchgrass can be used to either hide wildlife within the grass itself, or to effectively screen daytime browse sources and early successional growth within pockets of hidden habitat diversity.
Why Use Switchgrass For Wildlife Cover?
A client parcel visit last Winter in SE MN really hammered home the point again, that if your field of wildlife grass is laying flat in January, it is providing absolutely for the local wildlife population. Great cover in the Summer that is gone in the late Fall and Winter, is not great cover. Can you imagine a wildlife population that could somehow be built during the Summer months because of that cover, only to be left without any of that cover during the time of the year when they need it the most? That's why on many CRP fields and pheasant plantings, pheasant are re-introduced nearly every season because the cover that has been planted is not sufficient to create a sustainable pheasant population. The same concept applies to rabbits, deer and any other critter that needs that cover during the Fall and Winter months, to survive. However, switchgrass, is not like any other grass!
How long does it take for switchgrass to grow?
Switchgrass is one of the easiest forms of wildlife cover to plant and if planted correctly, switchgrass can be fully established after only 2 Summers of growth! Learning how to plant switchgrass by either frost seeding or using a no till drill, will offer you 2 sure-fire ways to establish a deer and small game habitat magnet.
When is switchgrass best for wildlife?
When heavy snows and high winds begin pounding the landscape during the late Fall, switchgrass will always be the last grass standing. Pure switchgrass is one of the greatest assets to a wildlife and whitetail habitat enthusiasts. Easy to grow and fast to establish, switchgrass can be used to either hide wildlife within the grass itself, or to effectively screen daytime browse sources and early successional growth within pockets of hidden habitat diversity. And the best part about switchgrass? When all other grasses has been crushed by the weight of a harsh Northern Winter, switchgrass can still be standing strong and supporting sustainable wildlife populations all year long.
When does switchgrass germinate?
You need to be patient, because your switchgrass will not germinate until the soil temperature is in the mid to upper 50s, which is right at the same time as corn, or slightly after. There have been times that my switch was only 2" high during the last 10 days of June, but then approached 4' by late September.
When to spray switchgrass?
If you still have a few weeds showing prior to your switchgrass emerging, a 2nd spraying of glyphosate can be appropriate during the 2nd or 3rd week of May. Of course if your switchgrass has emerged and you spray glyphosate on it, it will kill it - so use some caution if you spray in mid to late May!
Can you use a no till drill to cut through dead thatch?
The beauty of a no till drill is that you can use the drill to cut through dead thatch (and even live growth), to drop the tiny switchgrass seeds into exposed soil cuts, at the desired depth of just under the surface. No plowing, discing or tilling needs to take place and in fact, it is actually preferred when using our Genesis 3 model, that the dead thatch and debris is still in place. Firm, dry soil is also acceptable.
Where is Switch located?
Switch is a company based in Las Vegas, Nevada, that develops and operates the SUPERNAP data center facilities and provides colocation, telecommunications, cloud services, and content ecosystems.
What is switch telecom?
Switch is a CLEC ( Competitive Local Exchange Carrier) that sells all telecommunications services. As of July 2015, half of the company's 14 top executives are women. Seventy-percent of the current workforce is veterans.
How much did Switch purchase?
Switch developed an over $5 trillion purchasing cooperative to allow customers to collectively purchase telecommunications and other services across all of its campuses.
How many megawatts does a switch station produce?
The Switch Stations will produce 179-megawatts of power and were originally part of a joint construction project through First Solar in partnership with NV Energy. In June 2017, EDF Renewable Energy acquired the two solar projects from First Solar.
Where is Supernap located?
The SUPERNAP data center campus in Siziano, Italy will be 452,084 square-feet (42,000 m2) and have 40-megawatt power distributed via two 132kV transmission paths.
Where is the Switch SuperLOOP?
The Switch SUPERLOOP will extend directly to include Los Angeles and San Francisco. Switch's Pyramid Campus (former Steelcase Pyramid) in Grand Rapids, Michigan was opened in May 2017. At completion, it will reach up to 1.8 million square-feet making it the largest data center campus in the eastern U.S.
Where is the switch data center?
In January, 2015 Switch announced a $4 billion expansion plan to build a new data center campus east of Reno in Storey County. The Citadel Campus at Tahoe Reno Industrial Center (TRIC) is over 1,000 acres and is expected to have more than 7.2 million square feet of data center space at completion. In February 2017, Switch opened its first data center on the campus, TAHOE RENO 1, which will be more than 1.3 million square feet (110,000 m2), have 130 MVA power capacity, and more than 83,000 tons of cooling capability, making it the largest data center campus in the world. This is the first of eight planned data centers to be built at TRIC.
What is a transfer switch?
Transfer switches are devices that allow the safe connection or disconnection of different sources of electricity to an electric load. Many homes and businesses are equipped with a standby generator that is used in the event of a power outage. Many university campuses and factories also have their own on-site power plants, but occasionally switch to the local grid for power. Some industrial users have sophisticated electrical systems with multiple on-site generators and grid access points that can connected to different electrical loads. In all cases, it is important to properly isolate the electricity generation sources when they are not in use and ensure that transitions from one supply to another are conducted in a safe and controlled manner.
How do manual switches work?
Manual switches, as their name indicates, need to be operated manually—usually by throwing a lever on the side of the transition switch. The lever moves a connector inside the switch enclosure from one position connecting to one power source, to another position connecting to the other power source. Think of a railroad worker pulling levers to move tracks at railroad junctions. Manual switches are relatively simple, with no or few electronic parts liable to fail, and are cheaper than automated switches. Manual switches, however, are prohibited in certain safety-critical applications where it is necessary to quickly switch power sources whether a human is present or not.
What is a non-automatic switch?
The next level up in terms of complexity is a non-automatic electrical push-button switch, which does the same job as a lever, but uses an electronically operated mechanical device to trigger the switch. The button can either be situated on the transfer switch itself or it can be located somewhere else, for example in a control room. Non-automatic switches are convenient when the transfer switch is difficult to access, or when there are multiple transfer switches to operate. The decision of when and whether the press the button, however, remains in human hands.
What is a generator to generator switch?
Typically, a generator-to-generator transfer switch is required when a home is equipped with solar panels and a generator . If the solar panels and the generator are not electrically isolated, the AC inverter associated with the solar panels may attempt to feed power back to the generator, creating a hazardous and potentially damaging situation for both the generator and the inverter. The transfer switch allows the homeowner to switch power between the solar panels and the generator, keeping the two systems electrically separated. Generator-to-generator transfer switches are also required at large industrial facilities with multiple on-site gensets. Depending on the facility’s electrical needs at any given time, different generators may be activated or deactivated. A mine, for example, may have variable power needs depending on which shafts are active and require ventilation at any given time, and may run a different set of generators accordingly.
What is an open transition switch?
Open transitions are often described as ‘break before make’ transitions because the load is disconnected from the old power source before it is connected to the new source . Open transitions can be either ‘open delayed’ or ‘open in-phase’. In a delayed transition, there is a set delay between the instant that the load is disconnected and the instant it is reconnected to the new source. Switches with delayed transitions are often used with inductive loads, such as transformers and large electric motors, which can otherwise generate electrical disturbances when rapidly reconnected to a non-synchronized source. In a way, delayed transition switches work like a manual transmission in a motor vehicle. You press the clutch pedal to disengage the transmission while shifting gears and, if the vehicle is in motion, you would shift to neutral until stopping before shifting to reverse.
What is utility to utility switch?
A utility-to-utility transfer switch is used when electric consumers within the facility require the option to switch from one service to the other. A simple use case would be one where a commercial or industrial building has two electrical meters but a single electrical system. Depending on which tenant is using the building at any given time, the building can be switched from one meter to the other, ensuring that each tenant is only responsible for their own electrical consumption.
What is bypass isolation switch?
Bypass isolation transfer switches are specialized switches that can be inspected and tested without interruption to the power supply. This feature is made possible by the presence of a second switch circuit within the transfer switch. When one switch circuit is being inspected, power is diverted through the other circuit. The presence of a second circuit also provides a level of redundancy which ensures that the switch continues to function should the main circuit fail. Bypass isolation transfer switches are more complex and more expensive than single circuit switches, but, because they are more reliable and ensure the absence of disruption to the power supply, they are required by code in many healthcare settings and other mission-critical applications.
What is a HOA switch?
One of the most basic, yet often misunderstood, components of a control system is the simple HOA (Hand-Off-Auto) switch. Undoubtedly there are many installations in which multiple control switches are needed in different areas of the plant in order to control a single field device. This is a recipe for confusion: if one switch is in the “Hand” position and the other is in the “Auto” position, how is the device going to be controlled?
What is the second switch on a motor?
The second switch, out at the control station itself, could then be labeled as “Hand-Off-Auto” which would designate the Mode of Control. In “Hand” the motor would run continuously and in “Auto” the motor would start and stop by a PLC or other controller.
What is a local off remote?
It could be labeled as “Local-Off-Remote,” with Local referring to operating the motor right there in the MCC via Start/Stop pushbuttons and Remote referring to operating the motor elsewhere (i.e. out at the motor control station).
What is the label for a control switch?
Rather than labeling the switch “Hand-Off-Auto,” the switch should be labeled either “Hand-Off-Remote” or “Local-Off-Remote.” The Remote designation would indicate to plant staff that the valve is being controlled by a remote device – in this case, a PLC. Then, in SCADA, the Mode of Control for the valve would either be “Manual” (fixed valve percentage set by plant personnel) or “Auto” (real-time modulation by the PLC based on process conditions).
Where are the two control switches located on a motor?
A motor has two control switches that control its operation: the first is located in the Motor Control Center (MCC) and the second is located on a control station directly near the motor .
Can you have multiple HOR switches?
Regardless of what is decided, the most important thing to avoid is having multiple switches with redundant labeling (i.e. multiple “HOR” switches) or mixing Location and Mode terminology on the same switch (i.e. a “Manual-Off-Remote” or “Local-Off-Auto” switch). Unless a very specific application demands redundant switches or mixed-terminology switches, it is better to avoid them altogether.
