A power inverter is an electronic device that converts direct current (DC) into alternating current (AC). This conversion is essential for using DC power sources, such as batteries and solar panels, with AC-powered…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweA parallel inverter is a type of power inverter that allows multiple inverter units to operate simultaneously, providing increased power output and redundancy. This configuration is often used in renewable energy systems, such…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweA photovoltaic inverter is a device specifically designed to convert direct current (DC) generated by a solar photovoltaic module into alternating current (AC).
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweShenzhen Baoweite Power Supply Co., Ltd. ibhizimusi repamusoro-soro rakatsaurirwa kutsvagurudzo nekugadzirwa kwesimba uye zvigadzirwa zvekutaurirana. Kupfuura makore ekuunganidza uye kukura, Baoweite ave mutungamiri mu…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweShenzhen Baoweite Power Supply Co., Ltd. ibhizimusi repamusoro-soro rakatsaurirwa kutsvagurudzo nekugadzirwa kwesimba uye zvigadzirwa zvekutaurirana. Kupfuura makore ekuunganidza uye kukura, Baoweite ave mutungamiri mu…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweShenzhen Baoweite Power Supply Co., Ltd. ibhizimusi repamusoro-soro rakatsaurirwa kutsvagurudzo nekugadzirwa kwesimba uye zvigadzirwa zvekutaurirana. Kupfuura makore ekuunganidza uye kukura, Baoweite ave mutungamiri mu…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweShenzhen Baoweite Power Supply Co., Ltd. ibhizimusi repamusoro-soro rakatsaurirwa kutsvagurudzo nekugadzirwa kwesimba uye zvigadzirwa zvekutaurirana. Kupfuura makore ekuunganidza uye kukura, Baoweite ave mutungamiri mu…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweShenzhen Baoweite Power Supply Co., Ltd. ibhizimusi repamusoro-soro rakatsaurirwa kutsvagurudzo nekugadzirwa kwesimba uye zvigadzirwa zvekutaurirana. Kupfuura makore ekuunganidza uye kukura, Baoweite ave mutungamiri mu…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweShenzhen Baoweite Power Supply Co., Ltd. ibhizimusi repamusoro-soro rakatsaurirwa kutsvagurudzo nekugadzirwa kwesimba uye zvigadzirwa zvekutaurirana. Kupfuura makore ekuunganidza uye kukura, Baoweite ave mutungamiri mu…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweGood morning everyone. Welcome to Bwitt news ,I am Cathy ,let us look through the great news AS we all know that rectifier system is with battery charger function ,and also support to…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweVanodiwa zuva rega rega rakanaka kune vese Uyu ndiCathy anobva kuBwitt ,zvakanaka kusangana nemi mose pano Iye zvino tichagovera mhedzisiro yeVietnam kuratidzwa(SECC) yeBWITT newe , isu…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweA photovoltaic inverter cabinet, kusanganisira cabinet, inosanganisira matatu mapaneru makabati, kudzora makabati kumativi ose maviri, AC makabati, uye photovoltaic grid yakabatana magetsi ekugadzira system kabati mu…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweRack power supply refers to the power supply device installed inside the rack or on the circuit pole of communication equipment. Mainly…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimwe[gallery ids="4643"] Detailed explanation of the schematic diagram of a switching power supply, also known as a switching power supply or a switching converter, is a high-frequency electrical energy conversion device and a…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweA device used to control the electricity generated by solar panels entering the battery. If you plan to install an off grid solar system using a battery pack, you will need…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweSwitch Mode Power Supply (SMPS), also known as switch mode power supply or switch converter, is a high-frequency electrical energy conversion device and a type of power supply. Its function is to convert a…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweA static toggle switch is a device used to control an electrical circuit by turning on or Closing a circuit allows the flow or cessation of current. The principle is based on the…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweSafety issues to consider in inverter design 1. Products with metal casing must be selected: Vehicle-mounted inverters generate large amounts of heat due to their large power. If the internal heat cannot be…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimwe1. According to the spectrum division table formulated by the Institute of Electrical and Electronics Engineers (IEEE), the low-frequency frequency is 30~300kHz, the medium-frequency frequency is 300~3000kHz, the high-frequency frequency is 3~30MHz, and…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweHigh-frequency inverter electrical appliances are a kind of switching equipment used in the industrial field. What is the working principle of high-frequency inverters? This equipment is controlled by program logic. High frequency inverter…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweWhat are the advantages of communication cabinets? Enhanced security: Cabinets provide physical protection for network equipment, preventing unauthorized access, tampering, and theft. This is especially important in environments where security is a concern.…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweUnderstanding these basic concepts will help guide you in making an informed decision about how many 12V batteries your 2000-watt inverter setup requires for optimal performance. Now that we've covered the basics, let's…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe power inverter (vehicle power supply) is a convenient power converter that can convert DC12V direct current into AC220V alternating current, which is the same as the mains power. It can be used…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweLooking for an inverter? Communication power supply? Quality power products? Ehe saizvozvo, choose BWITT Power Supply Company Professional choice
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThere are two main ways of heat dissipation for pure sine wave inverters: one is to rely on its own assembly structure (heat sink) and use natural heat dissipation; the other is to…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimwe1. What is the difference between the continuous output power and the peak output power of a power inverter? Continuous power and peak power differ in what they mean. Continuous load = current…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweToday's market economy and social activities are so dependent on information networks (the Internet, telecommunications networks, industrial automation control networks, government e-government websites, etc.)
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe parallel inverter consists of two thyristors (T1 and T2), a capacitor, center-tapped transformer and an inductor.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweTechnical characteristics of rack-mounted UPS power supply. Rack-mounted UPS power supply provides more flexible and reliable power protection for equipment with harsh power environment requirements.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweDriven by national policies and huge demand, my country's data center computer room business has maintained rapid development, and manufacturing plans have gradually expanded.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe Bwitt power supply STS series is designed to ensure that users can perform uninterrupted switching between two AC power supplies under the condition of dual UPS (or two mains power supply, etc.)
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimwe1. Definition of switching power supply and power switch A switching power supply is a type of power supply that converts alternating current into direct current to power electronic devices. The power switch…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweHow to choose a suitable industrial UPS uninterruptible power supply? Many construction projects begin with dignitaries shoveling the first piece of dirt and end with these same men cutting a giant ribbon. But…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe quickest and easiest way to test an inverter is to run the device you want to power.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweWhen the rectifier enters a steady-state working state, the output DC voltage is constant, and the three-phase bridge arms of the rectifier bridge are driven according to a sinusoidal pulse width modulation rule.…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe following introduces some switching power supply selection tips, so that everyone can avoid detours in the process of selecting switching power supply, and then try to choose regular switching power supply products…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweSwitch Mode Power Supply (SMPS), also known as switching power supply and switching converter, is a high-frequency power conversion device and a type of power supply.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe inverter product is mainly composed of an inverter bridge, control logic, and various circuits. The inverter has a wide range of uses.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe input of the inverter is usually DC power, or DC power obtained by rectification and filtering of the mains power.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimwe1) For inverters with AC pass-through structure, it is forbidden to connect the mains power to the inverter and use it directly with load without DC connection.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe area where the machine is placed must be well ventilated and away from water, flammable gases and corrosive agents; the ambient temperature should be maintained between 0°-40°C
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweWith the development of network technology, higher requirements have been put forward for the network functions of inverter power supplies. High-performance inverter power supplies must meet: high input power factor,
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweLightning protection system: Damage to electrical equipment caused by lightning strikes is common, causing countless losses to production. In order to reduce the losses caused by lightning strikes,
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimwePure sine wave inverter power supply is a high-quality power supply system designed specifically for power plants, substations, communications industries, automation control equipment, solar energy, oil fields
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweSince the inverter power supply is responsible for the conversion between DC and AC in the circuit, its safety is particularly important. If a short circuit occurs in the inverter power supply, it…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe power inverter power supply is a convenient power converter that can convert DC12V direct current into AC220V alternating current, which is the same as the mains power. It can be used by…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweWith the continuous advancement of science and technology, inverter technology has developed more extensively. Research on inverter power supplies has also developed further.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweWith the development of information technology, inverter power supplies are more and more widely used in banking, securities, military, medical, aerospace and other fields.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweParizvino, high-power AC equipment in domestic telecommunications systems generally uses UPS as a reliable power supply solution.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweIn the data center electrical system, UPS power supply (AC or DC) is the key equipment to ensure the high quality,
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweHigh-frequency switching power supply is a power supply device widely used in various electronic equipment. Its high efficiency and stability make it an indispensable part in many fields.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweCan a transformer be used as an inverter? The answer is no. An inverter is a device composed of an inverter device.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe BWITT power supply tops our list of the best power inverters on the market.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweIs it better to choose a high frequency inverter or a power frequency inverter for the inverter? High frequency inverter and power frequency inverter are two common types of inverters.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweHigh-frequency switching power supply is a device that converts, regulates and controls electric energy, and is widely used in various electronic devices and power systems.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweSelect the appropriate energy efficient wye rated AC. What are the disadvantages of inverter AC? Disadvantages of Inverter AC
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweFirst of all, pay attention to the working voltage of the inverter, whether it is 12v, 24v or 48v, and select the corresponding battery voltage;
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimwe1. The fuse or fuse is blown Mainly check the diodes of the rectifier bridge, large filter capacitors, and switch tubes. Problems with the anti-interference circuit will also cause fuses or fuses to…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweIyo AC magetsi ekupa sisitimu yekutaurirana magetsi inverter inoumbwa neakakwira-voltage magetsi ekugovera michina, kutsika-pasi transformer
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweKukurukurirana inverter simba sarudzo? Nhasi, with the vigorous development of the communication industry, the competition in the communication power supply manufacturing industry has intensified. In addition to some key enterprises, there are also…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweLike most electronics, inverters typically have two states: working normally and suddenly not working at all. Some internal components fail for some reason, and when you plug it in, nothing happens.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweGenerally speaking, a variable frequency speed control device (also called frequency converter and VFD) can be used for up to 10 years under normal conditions.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweThe performance of the inverter usually means that these indicators can be measured by various measuring instruments in a short time.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweAs the electrical conversion equipment of the photovoltaic power station, the inverter plays an important role in the whole power station.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweFirst of all, we must know that the inverter power supply is used to change the frequency. The inverter includes a rectifier circuit and an inverter circuit. T
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweIn daily work, the interference problem of inverter power supply has always been very troublesome, and when the interference is serious,
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweChii chinangwa chikuru chekushandura magetsi? Nekuzivikanwa kwemidziyo yemagetsi, kushandura magetsi emagetsi zvigadzirwa zvinoshandiswa zvakanyanya
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweWhy do I need a pure sine wave inverter? When choosing an inverter, there are usually two main types to choose from, a square wave or modified sine wave inverter and a pure…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweSo how to choose a DC to AC inverter manufacturer? Generally speaking, choosing a DC to AC inverter manufacturer should be considered in terms of the scale of the manufacturer
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweA power inverter is a device that converts DC into alternating current, while a frequency converter is a component used to change the frequency of the alternating current.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimwe1. Power supply method The power supply system has a centralized power supply mode and a decentralized power supply mode. Sometimes the two methods are mixed, mainly determined by the load usage. Centralized…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweReliability is the primary indicator of the communication inverter power supply equipment, and the uninterrupted communication must be guaranteed by the communication power supply first.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweRecently, because of the middle of the year, many customers have to rush to ship. According to the previous production plan, the delivery can be successfully completed,
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimwehe power grid is a part of the power system. It is a unified network composed of various substations (substations) and output and distribution lines of various voltage levels.
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweIn order to reduce and eliminate the interference of the harmonic current generated at the input end of the high-frequency switching rectifier to the public grid and other electrical equipment, reduce the rated…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweRackinverter.com is a well-known web-based stage that offers the best Pure Sine Inverter 48v and 5000w ideas. The following news release provides some background on a well-known company that manufactures a wide range…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweRack inverters give advanced capacity to match today's needs. Because of the size of our inverters, the power is cut off and the device mumbles. When it comes to converting DC to AC,…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimweA full-wave rectifier, which uses all sides of the AC waveform, is a more capable change option. For information on the operation of half-wave and full-wave rectifiers. The rectifier is a device that…
Tags:2000inverter48v inverterbwitt-telecom-inverteConventional inverterDC converterelectronic devicesimba invertersingle-phase STS static transfer switch Verenga zvimwe