Vertiv electrical components Germany Vertiv model Vertiv price

Vertiv electrical component is a resistive device with nonlinear voltage-current characteristics, mainly used for voltage clamping when the circuit is subjected to overvoltage, absorbing excess current to protect sensitive devices. The resistor body material of the varistor is semiconductor, so it is a type of semiconductor resistor. The currently widely used "zinc oxide" varistor has a main body composed of divalent element zinc and hexavalent element oxygen. Therefore, from a material perspective, the zinc oxide varistor is a "II-VI group oxide semiconductor". In Taiwan, China, varistors are called "surge absorbers", sometimes also referred to as "electric shock (surge) suppressors (absorbers)". A varistor is a voltage-limiting protection device. Utilizing the nonlinear characteristics of the varistor, when overvoltage appears between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed value, thereby achieving protection for the downstream circuit. The main parameters of a varistor include: varistor voltage, current handling capacity, junction capacitance, response time, etc. The response time of a varistor is in the ns range, faster than gas discharge tubes, but slightly slower than TVS tubes. Generally, its response speed can meet the requirements for overvoltage protection in electronic circuits. The junction capacitance of a varistor is generally in the order of hundreds to thousands of Pf, making it unsuitable for direct application in the protection of high-frequency signal lines in many cases. When applied in AC circuit protection, its larger junction capacitance will increase leakage current, which needs to be fully considered in the design of protection circuits. The current handling capacity of a varistor is relatively large, but smaller than that of gas discharge tubes. Varistors, abbreviated as VDR, are nonlinear overvoltage protection semiconductor components sensitive to voltage.

Vertiv electrical component structure

For rubber and plastic power cables, copper cores are preferred for power, lighting, and internal installation of electrical equipment; compacted stranded cores are recommended for large cross-section conductors. Conductors for fixed installations generally adopt Class 1 or Class 2 conductor structures. Insulation materials generally include natural styrene-butadiene rubber, polyvinyl chloride (PVC), polyethylene, and nitrile-PVC compounds. Heat-resistant power cables use PVC with a temperature resistance of 90 °C. Sheath materials generally include PVC, cold-resistant PVC, ant-termite PVC, black polyethylene, and neoprene rubber. Black polyethylene and neoprene sheathed power cables are suitable for extreme cold resistance and outdoor overhead laying. Rubber or plastic sheathed power cables can be used in environments with external forces, corrosion, and humidity. Rubber and plastic flexible power cables use copper cores with a flexible structure, consisting of multiple single wires twisted together; flexible conductors generally adopt Class 5 or Class 6 conductor structures. Insulation materials generally include natural styrene-butadiene rubber, PVC, or soft polyethylene plastic. The cabling lay ratio multiplier is small. The outer protective layer uses cotton yarn braiding to prevent overheating and damage to the insulation layer. To facilitate use and simplify production processes, a three-core balanced structure is adopted, saving production man-hours and improving efficiency. For shielded insulated power cables, tinning of the conductor cores is permitted in certain occasions; the surface coverage density of the shielding layer shall comply with standards or meet user requirements; the shielding layer shall be braided or wrapped with tinned copper wire; if an extruded sheath is added outside the shield, the shield may use soft round copper wire braiding or wrapping. To prevent internal interference between cores or pairs, individual phase shielding structures for each core (or pair) can be produced. General-purpose rubber-sheathed rubber power cables use copper flexible wire bundles with a flexible structure; paper wrapping is allowed on the surface of large cross-sections to improve bending performance. Insulation uses natural styrene-butadiene rubber, which has good aging performance. Outdoor product rubber uses neoprene or a neoprene-based mixed rubber formula. Mining rubber power cables use copper cores with a flexible structure, consisting of multiple single wires twisted together: flexible conductors generally adopt Class 5 or Class 9 conductor structures. Insulation materials generally use rubber. The cabling lay ratio multiplier is small. Many products use metal braiding to equalize the electric field and improve the sensitivity display of insulation status. There is a thicker outer sheath, and color coding is performed underground in mines to allow construction personnel to understand the different voltage levels of the rubber power cables.

Vertiv electrical component features

1. High sensitivity; 2. Geometric shape has multi-faceted adaptability, allowing fiber optic sensors to be made in any shape; 3. Can manufacture devices that sense various physical information (sound, magnetism, temperature, rotation, etc.); 4. Can be used in high voltage, electrical noise, high temperature, corrosion, or other harsh environments; 12. And has inherent compatibility with fiber optic telemetry technology. The advantage of fiber optic sensors compared to traditional sensors is that they use light as the carrier of sensitive information and optical fiber as the medium for transmitting sensitive information, possessing the characteristics of fiber optics and optical measurement, with a series of unique advantages. Good electrical insulation, strong anti-electromagnetic interference capability, non-intrusive, high sensitivity, easy to realize long-distance monitoring of measured signals, corrosion resistance, explosion-proof, flexible optical path, and easy connection to computers. Sensors are developing towards sensitivity, precision, strong adaptability, compactness, and intelligence. They can act as human eyes and ears in places inaccessible to humans (such as high-temperature areas or areas harmful to humans, such as nuclear radiation zones), and can even transcend human physiological limits, receiving external information that human senses cannot perceive.

Vertiv electrical component principle

A photodiode is a semiconductor device that converts light signals into electrical signals. Its core part is also a PN junction. Compared with ordinary diodes, the structural difference is that to facilitate the reception of incident light, the PN junction area is made as large as possible, the electrode area is made as small as possible, and the junction depth of the PN junction is very shallow, generally less than 11 microns. Photodiodes operate under reverse voltage. Without illumination, the reverse current is very small, known as dark current. When illuminated, photons carrying energy enter the PN junction, transferring energy to bound electrons on covalent bonds, causing some electrons to break free from covalent bonds, thereby generating electron-hole pairs, known as photo-generated carriers. Under the action of reverse voltage, they participate in drift motion, significantly increasing the reverse current; the greater the light intensity, the greater the reverse current. This characteristic is called "photoconductivity". The current generated by a photodiode under general illumination is called photocurrent. If a load is connected in the external circuit, the load receives an electrical signal, and this electrical signal changes correspondingly with the light. Photodiodes are widely used photosensitive devices in electronic circuits. Like ordinary diodes, photodiodes have a PN junction. The difference is that there is a transparent window on the housing of the photodiode to receive light irradiation, realizing photoelectric conversion. The text symbol in circuit diagrams is generally VD.

Weidou Intelligent Technology professionally sells German Vertiv connectors, Vertiv switches, Vertiv relays, Vertiv controllers, Vertiv plugs, Vertiv sensors, Vertiv resistors, Vertiv capacitors, Vertiv buses, Vertiv modules, Vertiv cables, Vertiv power supplies, Vertiv interfaces, Vertiv gateways, Vertiv circuit breakers, Vertiv original imports from Germany. Welcome customers to inquire and order.