Energy efficiency technology CIRCUTORThe most versatile solution for power quality problems. Introduction. Domestic and industrial loads contain increasing numbers of electronic circuits that are supplied with currents that are not purely sinusoidal. For example, engines increasingly use frequency regulation, which requires converting alternating current AC to direct current DC and then DC back to AC. Given that the supply is normally in AC, this requires increasing use of electronic power converters rectifiers, inverters, etc. DC AC and AC DC transformations. The same thing happens with common loads like computers, LED and discharge lighting, lifts, etc. This means that the electrical network must supply a large number of charges that rectify the current, distorting the wave shape of the current being consumed so that it is not a purely sinusoidal wave but rather a superposition of sinusoidal waves with frequencies that are multiples of the network frequency harmonics. MbA.Ifwxj2ME6I3AcXq.rjYG5g5mEMMG.jpg' alt='Dc Uninstall Devices Key' title='Dc Uninstall Devices Key' />Configuring new computers by hand is a timeconsuming way to set up new systems. Larger organizations can use System Center Configuration Manager or the. This includes platform requirements and other important constraints. There is no special role or feature installation for virtualized domain controllers all domain. Manage all your devices in real time from the cloud The new update of the MYeBOX Cloud platform is now available, from which any registered user can control and. Dc Uninstall Devices Key' title='Dc Uninstall Devices Key' />Figures 1 and 2 show the typical consumptions of one network with single phase rectifiers and one with three phase rectifiers. This type of current is most abundant in installations like offices, shopping centres, hospitals, etc., and it is formed by a 5. Hz component network fundamental frequency and a set of different percentages of components with multiple frequencies. These percentages may be measured using a harmonics analyzer, which can also measure the total distortion rate, or THD, which gives the ratio between the effective value of the ripple and the effective value of the fundamental component. The result of non sinusoidal consumption is that the voltage also suffers some distortion due to the voltage drops in the impedances of lines and transformers. In the logs we can note a slight voltage distortion in the single phase network low THD and a stronger distortion in the three phase example. In both cases the current shape differs greatly from the sinusoidal current, and the THD values are higher. To regulate this issue and limit the voltage distortion levels at connection points to public networks, there are international standards that establish harmonic emission limits for units and systems connected to the network Table 1. The most significant are those associated with compatibility levels. Some key concepts regarding harmonics. We can better understand harmonics problems by looking at some basic concepts which have been published in several articles and books, and which are summarised below The origin of harmonics problems are receivers that consume distorted currents called non linear receivers. One of our remote Windows 7 Professional users just reported that he received an Upgrade Reservation Offer for Windows 10. It appears the Get Windows 10 App running. Security guidelines for disabling services in Windows Server 2016 with Desktop Experience. ABSquad CFS2 Modern Aircraft. StopPlay Music. Play CFS1 and CFS2 Online again at the World Gaming Center. FREE Virtual DJ Studio allows a DJKJ to provide Entertainment for parties, barsclubs, and other events. The problem spreading to other users connected to the same network depends on the impedance of the network, which depends on the distribution company. This impedance is not usually direct, but can be calculated from the short circuit power available the more short circuit power, the less impedance. Users have a section of the distribution lines before they reach the final load. Thus, the problems that may arise at the mains connection of their installation may be attributed to a lack of short circuit power, but in many cases, the problems that may arise at points farther down the line from the mains connection are often due to impedances in the installation itself. The Used Discography Torrent here. Furthermore, in terms of distortions farther down the line from the mains connection, we must remember that line impedance has a very significant inductive component. Therefore, many times it is not a question of using distribution cables with larger cross sections, but of limiting inductance per metre of cables. This is achieved by braiding and twisting the distribution cables often rejected by installations due to aesthetics. The problem of voltage distortion at the PCC point can be aggravated due to of resonances between the power factor compensation capacitors and the inductance of the distribution lines transformers and lines. Corrective measures filters must be installed as close as possible to the loads that are generating harmonics. In short, the solution to the harmonics problem is two pronged On the one hand, users must limit the number of harmonic currents generated by their receivers and must try to distribute electricity in their plants with low impedance per metre of cable. Dc Uninstall Devices Key' title='Dc Uninstall Devices Key' />On the other hand, the distribution company must ensure minimal short circuit power and must ensure that users do not exceed certain distortion limits, so as not to cause harm to their neighbours sharing the network. When the harmonic levels generated by receivers are not permitted for the distribution system supplying them, corrective filters must be installed. In this article we are going to focus on explaining the concept of filtering. Compatibility limits due to harmonics. The presence of harmonics in a network has several consequences. The most significant are described below. Deterioration of the voltage wave quality, affecting sensitive receivers. Overloading and possible parallel resonance between the line inductance and the power factor PF compensation capacitors. Worsening of the power factor. The network power supply capacity is therefore diminished, due to being oversized. Overloading of cables and especially transformers very sharp increases in iron losses. Problems of unwanted tripping of protection devices. To avoid these issues, there are standards that establish a minimum power quality which limits the maximum distortion levels for the voltage wave supplied at the connection point to the public network PCC. These limits are called compatibility limits. Table 2 presents a summary of these limits for harmonics in industrial LV networks. The different classes mentioned in this table correspond to Class 1 Industrial environment intended for power supply to sensitive electronic units. Class 2 Normal industrial environment. Usual limits for public networks. Class 3 Deteriorated industrial environment generally due to the presence of transducers. Not suitable for power supply to sensitive units. Voltage harmonics are due to the voltage drop produced by current harmonics on distribution line impedances. This is illustrated in Fig. So, reaching these limits depends on two factors Emission level of the receivers The more emissions, the more distortion caused by the voltage drop produced by harmonic currents in the network. Network impedance The more impedance, the larger voltage drop for the same emission value of the receivers. Table 3 gives the emission limits for low voltage networks established by the EN IEC 6. Scc, where Scc is the short circuit power corresponding to the mains connection Proportional share of the total short circuit power of the contracted power. Which installations need active filters Some of the disturbances mentioned above can be mitigated and corrected through filters. Active filters are the perfect solution for installations with a large number of single phase and three phase loads that generate harmonics and that have different consumption regimens. Active filters are units based on transducers that modulate the PWM pulse width. There are two kinds Serial filters and parallel filters. Parallel filters are often used to comply with the IEC 6. IEEE 5. 19 standards, as they are based on using an inverter to inject the harmonics consumed by the load into the network in anti phase. Fig. 3 illustrates this operating principle, showing the load, filter and network currents. Security guidelines for system services in Windows Server 2. Applies to Windows Server 2. The Windows operating system includes many system services that provide important functionality. Different services have different default startup policies some are started by default automatic, some when needed manual, and some are disabled by default and must be explicitly enabled before they can run. These defaults were chosen carefully for each service to balance performance, functionality, and security for typical customers. However, some enterprise customers may prefer a more security focused balance for their Windows PCs and servers, one that reduces their attack surface to the absolute minimum, and may therefore wish to fully disable all services that are not needed in their specific environments. For those customers, Microsoft is providing the accompanying guidance regarding which services can safely be disabled for this purpose. The guidance is for Windows Server 2. Desktop Experience unless used as a desktop replacement for end users. Each service on the system is categorized as follows Should Disable A security focused enterprise will most likely prefer to disable this service and forego its functionality see additional details below. OK to Disable This service provides functionality that is useful to some but not all enterprises, and security focused enterprises that dont use it can safely disable it. Do Not Disable Disabling this service will impact essential functionality or prevent specific roles or features from functioning correctly. Therefore it should not be disabled. No guidance The impact of disabling these services has not been fully evaluated. Therefore, the default configuration of these services should not be changed. Customers can configure their Windows PCs and servers to disable selected services using the Security Templates in their Group Policies or using Power. Shell automation. In some cases, the guidance includes specific Group Policy settings that disable the services functionality directly, as an alternative to disabling the service itself. Microsoft recommends that customers disable the following services and their respective scheduled tasks on Windows Server 2. Desktop Experience Services Xbox Live Auth Manager. Xbox Live Game Save. Scheduled tasks MicrosoftXbl. Game. SaveXbl. Game. Save. TaskMicrosoftXbl. Game. SaveXbl. Game. Save. Task. LogonYou can also access the information on all services detailed in this article by viewing the attached Microsoft Excel spreadsheet Guidance on Disabling System Services on Windows Server 2. Desktop ExperienceDisabling services not installed by default. Microsoft recommends against applying policies to disable services that are not installed by default. The service is usually needed if the feature is installed. Installing the service or the feature requires administrative rights. Disallow the feature installation, not the service startup. Blocking the Microsoft Windows service doesnt stop an admin or non admin in some cases from installing a similar third party equivalent, perhaps one with a higher security risk. A baseline or benchmark that disables a non default Windows service for example, W3. SVC will give some auditors the mistaken impression that the technology for example, IIS is inherently insecure and should never be used. If the feature and service is never installed, this just adds unnecessary bulk to the baseline and to verification work. For all system services listed in this document, the two tables that follow offer an explanation of columns and Microsoft recommendations for enabling and disabling system services in Windows Server 2. Desktop Experience Explanation of columns. Service description. The services description, from sc. Name. Key internal name of the service. Installation. Always installed Service is on Server Core and Server with Desktop Experience Only on Datacenter Edition Service is on Server 2. Desktop Experience, but is not on Server Core. Start. Type. Service start type on Windows Server 2. Recommendation. Microsoft recommendationadvice about disabling this service on Windows Server 2. Comments. Additional explanation. Explanation of Microsoft recommendations. Do not disable. This service should not be disabled. OK to disable. This service can be disabled if the feature it supports is not being used. Already disabled. This service is disabled by default no need to enforce with policy. Should be disabled. This service should never be enabled on a well managed enterprise system. The following tables offer Microsoft guidance on disabling system services on Windows Server 2. Desktop Experience Active. X Installer Ax. Inst. SVService description. Provides User Account Control validation for the installation of Active. X controls from the Internet and enables management of Active. X control installation based on Group Policy settings. This service is started on demand and if disabled the installation of Active. X controls will behave according to default browser settings. Service name. Ax. Inst. SVInstallation. Only on Datacenter Edition. Start. Type. Manual. Recommendation. OK to disable. Comments. OK to disable if feature not needed. All. Joyn Router Service. Service description. Routes All. Joyn messages for the local All. Joyn clients. If this service is stopped the All. Joyn clients that do not have their own bundled routers will be unable to run. Service name. AJRouter. Installation. Only on Datacenter Edition. Start. Type. Manual. Recommendation. No guidance. Comments. App Readiness. Service description. Gets apps ready for use the first time a user signs in to this PC and when adding new apps. Service name. App. Readiness. Installation. Only on Datacenter Edition. Start. Type. Manual. Recommendation. Do not disable. Comments. Application Identity. Service description. Determines and verifies the identity of an application. Disabling this service will prevent App. Locker from being enforced. Service name. App. IDSvc. Installation. Always installed. Start. Type. Manual. Recommendation. No guidance. Comments. Application Information. Service description. Facilitates the running of interactive applications with additional administrative privileges. If this service is stopped, users will be unable to launch applications with the additional administrative privileges they may require to perform desired user tasks. Service name. Appinfo. Installation. Only on Datacenter Edition. Start. Type. Manual. Recommendation. No guidance. Comments. Supports UAC same desktop elevation. Application Layer Gateway Service. Service description. Provides support for third party protocol plug ins for Internet Connection Sharing. Service name. ALGInstallation. Only on Datacenter Edition. Start. Type. Manual. Recommendation. No guidance. Comments. Application Management. Service description. Processes installation, removal, and enumeration requests for software deployed through Group Policy. If the service is disabled, users will be unable to install, remove, or enumerate software deployed through Group Policy. If this service is disabled, any services that explicitly depend on it will fail to start. Service name. App. Mgmt. Installation. Always installed. Start. Type. Manual. Recommendation. No guidance. Comments. App. X Deployment Service App. XSVCService description. Provides infrastructure support for deploying Store applications.