Showing posts with label protection. Show all posts
Showing posts with label protection. Show all posts

Tuesday, October 4, 2011

Parallel operation of UPS and power protection systems

Parallel operation of UPS and power protection systems

Security System

The parallel operation of uninterruptible power supplies (UPS), whether in parallel or parallel redundant capacity, focuses on criteria such as mode (present or lack of power supply), battery operation, handling the restoration of power, conditions Error and overload. It also depends if it is connected to a single or dual power supply input.

The rectifier and static bypass switch to provide the inputs are drawn from a common point of AC power (construction of a newcomer) and eachUPS with insulators or allow adaptation to individual switches off. Each module also has its own set of drums.

The output of each UPS module is connected to a common ac busbar, which then spread to critical loads. This configuration of the UPS is equipped with an emergency bypass switch (button). A crossroads for the future expansion of substitution is integrated in the cabinet.

Mode of operation

In normalOperation, if mains power supply or back-up power supply (diesel generator, for example) is present, each of the UPS modules share the load evenly.

In battery mode, if power and / or back-ups are no longer available, each share of uninterruptible power supply modules in parallel redundant configuration will continue to load. Each has its own battery with the same duration and the duration of the threshold DC voltage is turned off. However, each set of batteriesDischarge at different rates. In the event of prolonged power outage, the battery is up to the threshold of their DC disconnect.

Uninterruptible power supply modules are restarted automatically when utility power is restored. To avoid tripping of the upstream signal, boot sequence includes a soft-start action to reduce the impact of the high inrush current.

If one of the UPS modules detect an internal error, it will automatically disconnect from the commonOutput, in which case the remaining modules in the configuration you pick up the load (without interruption) and share them as well.

If a second engine fails in the parallel configuration, the remaining modules in a power overload and bypass the load with power via an electronic switch. This method of parallel operation of UPS ensures the load receives an adequate power source automatically and without interruption.

Faced with an overload of allDepending on the size and duration of overload - UPS reacts in two ways. First, the UPS inverter overload behavior, as in the case of an overload of small (less than 100 to 150% of rated power), the UPS continues to power the load from its inverter.

Secondly, for larger overloads that exceed the capabilities of UPS, automatically, all the modules in an attempt to correct the error handle.Will remain so until the fault is corrected or, if this continues, the arrest.

It 'important to emphasize that there is a risk of bypass, system resilience, and that is why modern UPSs have been designed and programmed to generate alarm messages that can be monitored locally or remotely over a network.

Emergency bypasses are normally installed in parallel UPS configurations, so electrically isolated modules on and offif necessary.

With a dual input supply, the UPS system from separate rectifier and static switch sources, which helps to increase the resilience and negates the single point of failure associated with a single supply delivered.

The operation of a parallel capacity of continuity of power is the same as a parallel redundant system - except as regards the failure of the UPS module. In this case, if a module fails, the entire balance, plus the route, are forced into overloadState and transfer the load to bypass. This ensures that the load is maintained at a sufficient power supply automatically and without interruption.

There are some useful accessories that can be installed in parallel operation of UPS, a UPS Group synchronizer (UGS) and Parallel Systems Joiner. A UPS Group synchronizer synchronizes the outputs of two separate sets of parallel UPS, which can be powered from separate sources of CA. It allows the outputs to the groupsFounded in dual-bus format. A Parallel Systems Joiner works similarly, but allows the connection of two separate groups in a dynamic format dual bus, the extension of the system, fault tolerance and ease of maintenance easier.

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Tuesday, September 20, 2011

The Taser X26c Citizen Defense System Protection personal future

The Taser X26c Citizen Defense System Protection personal future

Security System

Tasers have been used for a long time and are mainly
used by law enforcement and security personnel. But
Since 1994, Taser International has made available more than 100,000
Individuals with some of the more modern forms of
personal protective equipment. Series Air Taser
published in 1994, Advanced Taser M18 series published on
in 1999, Taser International has led the industry
non-lethal personal protection devices.

Now comesThe new and improved taser X26c Citizen Defense
System, published in 2004, the personal protective equipment is
taken the lead in non-lethal personal protection devices. This
System is really the future of personal protection,
small and powerful device that the new "uses Shaped
Technology Pulse ", the pulsed power is transferred to the
central nervous system of an immediate goal
Deprivation of rights. The X26c uses a cycle of 10 seconds that can
berose to a cycle of 30 seconds (3 times x 10 seconds = 30
Seconds) by releasing the three times that of the 30 X26c
to begin the second cycle, so that the field X26c
Earth and flee to a safe place.

X26c The Taser is a safe and responsible self-defense
An instrument that uses a cutting-edge Anti-Felon Identification
System (aphids), grows 20-30 confetti pieces
that have been serialized to identify the owner of the Taser
X26c device.This is in addition to a comprehensive social
Security number to verify background checks and that the crimes
Checklists terrorist, and verifies the identity and age of
Webshop citizens buyer. Also included with a Taser
X26c Citizen Defense Systems is to buy a free 1 hour
Training session with a local police Taser
Trainers.

The U.S. Department of Defense has classified Tasers
Energy devices as "non-lethal weapons" (NLW). It can be NLWs
defined as "weapons that are designed and used primarily for
disable the threat, minimizing the dead,
permanent damage to persons or property and
Environment ".

Powerful, effective and safe Taser Defense X26c Citizen
System is the answer to your needs for personal protection.

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Wednesday, August 10, 2011

Home alarm security system and burglar protection - Why you need quality anti-theft alarm system

Home alarm security system and burglar protection - Why you need quality anti-theft alarm system

Security System

First, avoid HOUSE ALARM HOME SECURITY MONITORING SYSTEM or stop burglary?

A recent study of a major review of New York organization on-line for security at home trying to find the role and status of the alarm system monitored the safety of the modern home. And in this context, given the very TOP priorities that Americans home safely to their homes, especially in today's desperate economy, the central question that experts tried FIRSTout, was simply this: it is a valid and reliable intrusion detection system (only on condition that consumers can find one) is an effective tool, which deter and prevent burglary and theft?

It has been found, however, the results of the researchers, is that the answer to this question is YES, that is, and in grand style ...

In fact, many many surveys, studies and statistics that will be reviewed by the researchers now show empirically that a high degree ofEffectiveness in the use of an electronic security system monitored as a deterrent to home burglary and a prevention tool to combat theft. These data and studies are as follows:

- The Rutgers University study in 2009 was through its School of Criminal Justice, with five years of data, the most comprehensive of its kind ever conducted, scientifically proven that thieves tend to benefit as much as 30-40 percent Avoid contact of homes with burglar alarm systems, the study continuesfound that "an alarm system installed in an apartment less attractive to would-be intruders, and activates and protects the house without moving intruder to neighboring houses. do"

- That in fact, in an earlier 1994 study, which was based on interviews with thieves, "Thieves on the Job," which was published by Northeastern University Press, researchers have made a similar statement, and had found that "Most of the authors, but wanted to avoid all the alarms and when it hitsthese devices leave all thoughts of attack on the apartment. "

- This according to a study conducted by Temple University Professor Simon Hakim, director of the University Centre for Competitive led government makes a monitored alarm system, a house three times less likely to be robbed of a home without an alarm. Businesses without alarm systems are 4.5 times more likely to be robbed than those with electronic security system. And, finally, $ 400 average losses due to theftless than in homes without security systems alarm.

- This is, after the confession made by the thieves, 9 of 10 convicted burglars admitted to prevent an attempted theft in a house in total, which is protected by an alarm system. (U.S. Department of Justice study, 1999).

- What an effective home security system (but from a reputable home security) is a house be broken into three times less, according to a robbery and the National FireAssociation study (2004). Reduce Beyond that, however, the 2009 study at Rutgers University, cited above indicate that despite the current residential security system at home, in fact, crime by more than 30-40 percent, it does so not only for the fact alone, that the alarm system, but the whole environment.

- That the installation of electronic security products by the Americans, and the use of professional services (and spending) on ​​it, has grownestimated at 4.3 percent per year (STAT Resources, Inc., a Newton, Mass., full-service market research
An organization specializing in such things).

- The fact that 94 percent of alarm owners are satisfied with their home alarm systems (Prof. Simon Hakim, Temple University study).

- The fact that 90 percent of police believe alarms deter burglary attempts. (STAT Resources Study).

- After passing a resolution by the board of the International Chiefs of Police1994, provides alarm systems, but they are professionally installed and monitored, are useful tools to prevent crime and ensure peace for home and business. (International Association of Chiefs of Police, Alexandria, Va.).

It 's probably the only effective solution for home burglary ....

In fact, with a good monitored alarm system is not only important as a tool and effective theft deterrent. But afterSecurity experts, pound-for-pound, must be a monitored security alarm system, which emphasize a strong, good and reliable brand, is perhaps the best and most effective in a house that you could put them to flight potential thieves Institute and keeps them away from your home and your family safe.

And why?

Because of its enormous power of "deterrent", or factor. Says Chris E. McGoey, an internationally recognized expertprobably one of the leading authorities on safety management at home in America, working often with the media on domestic violence, crime and anti-intrusion and is a frequent expert witness in court on these issues in the Americas, which has been consulted by the study auditors, other sources ", alarm systems deter burglaries, because [the thieves in their potential to cause] the potential and fear of being discovered and arrested by police. The deterrent effect comes fromAlarm Company lawn signs that are found in protected areas, and warning stickers on the windows. Thieves home and apartment usually bypass a property with visible alarm signs and will be in another property that does not go through that sign. "

CONCLUSION: The vast majority, the overwhelming amount of data generated by researchers expert in this detective agency in New York has accumulated the most decisive result of the researchers that the mere fact of having only one good,professionally installed and monitored ELECTRONIC SECURITY SYSTEM HOME ALONE drastically reduce the possibility of entering a home and deter intruders greatly hitting a house. (As it is, and in relation to other important risk factors and
Emergencies).

KEY: The monitoring of electronic security system must have the right quality

OTHER CRITICAL One result of these researchers, however, is this: that what is probably the crucialeverything, but it is an electronic system, the right brand is to be chosen from a quality company. As in any other industry, there are good brands and companies, and there are bad brands and companies.

In fact, after this realization, as a homeowner or a consumer, if you were wrong or incorrect home security system, or, even worse than choosing the wrong company or unreliable, or offering, installed the system for you, you a real possibility a continuing serious violationsIns, and risking the lives alone in the first place only to the specific factor! And even more, that you were in the place which may be in even worse shape than before he went for the first time at the home security system.

So, in that the house always GOOD electronic home security at home, have involved, as you know, or find it? This is really the crucial task of test and that the house overlooks. The choice of a title at homeAnti-theft devices, especially a high quality, is that the type most suitable and appropriate for you, are infallible and reliable, one of the hardest and most difficult things for each homeowner is always possible.

Why?

This is mainly due to the fact that such a large number and variety of home security and alarm systems and security companies on the market. Accurately reading the local phone book or search the Internet, will soon provide an importantNumber of home security company in one of the big cities, which are often the most confusing to almost everyone, but the eye more security expert.

In fact, there is, the same study, some medium and large size 2500-3400 clothes themselves as security companies or operators of these objects across America. And from this point, a consumer or home owner should a single person, at home or property to guarantee. Also, equally important, in an attemptFor the comparison of the various security systems to get the best and right for you, you also have the possibility of a good idea and figure out exactly what types of important security features offered by each option.

A 1997 study on the market, for example, STAT Resources, Inc., a Newton, Mass, full-service market research firm, found that it was an average of 13,100 companies nationwide that have been classified as an "alarm unit installed ". (Alarm trustedThe installation of the equipment).

Therefore, the hardest part of all aspects of the consumer looking for a home security system is preserved, that the consumer is able to choose one company from such a variety of different security systems, and companies that sell them , each of which is hot to see in competition with others, from the fabulous other-do to make advertising claims about their individual products - in a deluge of Internet advertising,Radio and TV, newspapers and posters, etc. and each of them, of course, is of high quality and excellence for the brand that claim to offer customers, and tell everyone that, of course, that their own product brands (and the related services), is the largest and best quality! So how the hell can the average person to tell right from wrong?

Best of the best home security system monitored, evaluated, selected and displayed

In short, theThe central question for the average home is: How do you know enough to know by now that there are thousands of brands in home security system is good and what is reliable and choose the right quality? Consequently, the work of independent researchers in the recent study, which led to the development of a systematic, they are tested together by all the important alarms from all over America, and evaluated, selected and arranged them with the arrivalbest of the best home security system to consumers in the United States today.

It describes, through an objective, data-based, mathematical formula and a set of criteria, the best of the best home security systems in the box with full electronic monitoring global and methodically assessed, scores and produce prices, is one of the Twelve Top Home Security Systems call Dad, and then the number # 1 Best home security system in the industry.

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