Y. F series porcelain clad arrestersummaryThe arrester is the basis for insulation coordination of various electrical equipment (transformer, reactor, capacitor, engine, motor, PT, CT, circuit breaker, contactor, etc.) in the power system.
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1) It is used to protect electrical equipment from high transient over-voltage and limit the freewheeling time and the freewheeling amplitude.
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Features of arrester with series gap □ Product model description1. Under normal conditions, the series gap of the arrester isolates the arrester from the system, and the arrester does not participate in the operation, thus prolonging its service life;2. For the system with frequent voltage fluctuation, the gap can be broken down to make the arrester work only when the voltage exceeds the specified value, avoiding the frequent action of the gapless arrester;3.
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Advanced stirling cooler for cooled infrared detectors.Made in China. Made in China. Details please see the picture. Made in China. Details please see the picture. Advanced stirling cooler for cooled infrared detectors.Details please see the picture. Made in China. Advanced stirling cooler for cooled infrared detectors.
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Vehicles and ships are only essential equipment in urban anti-terrorism, public security crime collection and border and coastal defense patrols. Equipped with on-board infrared thermal imager is to equip vehicles with special eyes to break the dark cover and uncover various camouflages.The on-board infrared thermal imager adopts modular and standardized design, which can be quickly and easily installed on various vehicles equipped at present.
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Reference standardsGB11032-2000 AC gapless metal oxide arresterJB/T8952-2005 Metal Oxide Surge Arrester with Composite Jacket for AC SystemJB/T10497-2005 Metal Oxide Surge Arresters with Series Gap and Composite Jacket for AC Transmission LinesGB311.11-1997 Insulation Coordination of High Voltage Transmission and Transformation EquipmentJB/T8459-2006 Preparation Method of Arrester Product Model□ Structural characteristics1.
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Stirling cooler for cooled infrared detectors. Model: C308. Made in China. Model: C308. Made in China. Stirling cooler for cooled infrared detectors. Model: C308. Made in China. Stirling cooler for cooled infrared detectors.
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□ Technical standards The standard for product production is GB11032-2000 (eqvIE60099-4.1991) "AC gapless metal oxide arrester", JB/8952-20045 "composite metallization arrester for AC system with no gap in the jacket"□ Product model description □ Conditions of useYH |---- Composite jacket metal oxide arrester (HY is the old model) | Y is metal oxide surge arrester with porcelain jacket5 |---- Nominal discharge current KaW |---- Structural features W: No gap C: Series gap R: Parallel gapS |---- place of use S: Power distribution Z: Power
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Very popular MW cooled detector in the world market. Can work with C308, C330 or C363 stirling cooler.
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The sight is mainly used for aiming and shooting with corresponding weapons by personnel of armed police, public security and other units. It can also be used for hand-held observation mirror search and monitoring.
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Night vision instrument is mainly used to identify targets at close range (250mm ~ 10m) at night, operate equipment, read documents and observe. For target search. The low illumination CCD and infrared lighting mode can also be replaced by ICCD mode.
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Very good delivery time. Lowest price in the world. Can work with C308, C330 or C363 stirling cooler. Very good reliability. Very good reliability. Very good delivery time. Lowest price in the world. Can work with C308, C330 or C363 stirling cooler.Can work with C308, C330 or C363 stirling cooler.Very good delivery time. Lowest price in the world. Very good reliability.
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Very popular MW cooled detector in the world market. Can work with C308, C330 or C363 stirling cooler.
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Metal Oxide ResistorsThe metal oxide resistor is the core part of the lightning arrester. It uses zinc oxide as the main component, adding a small amount of bismuth oxide, cobalt oxide, chromium oxide, manganese carbonate, antimony oxide and other trace additives, and is sintered at high temperature. The microstructure of metal oxide resistors is mainly composed of zinc oxide grains, grain boundary layer and spinel phase.
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wire galloping has brought immeasurable economic losses and social impacts to our country. The composite interphase spacer is a kind of line that can effectively prevent the galloping of line conductors to keep the line safe, and effectively reduce the space of the transmission corridor. It is listed as a compact high-voltage transmission line 2220kV and below in the guidelines for galloping prevention and control of the State Grid Corporation of China.
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SpecificationsRated voltage kVCustomized mechanical tensile load KNconnection markStructure height H (mm)Minimum arc distance h (mm)Minimum nominal creepage distance h (mm)Lightning full-wave impulse withstand voltage (peak kV not less thanThe operating impulse withstand voltage (peak value) kV is not less thanPower frequency wet withstand voltage 1minkv (effective value) kV is not less thanFXBW4-10/40104011W340±1519040095-60FXBW4-10/70107016W360±1519049095-60FXBW4-10/1001010016W400±1519049095-60FXBW4-20/40204016W450±15280600170-75FXBW4-20/70207016W470±15280750170-75FXBW4-20/1002010016W500±152
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installation and use 1. The fuse allows horizontal or vertical installation 2. When the data of the melt tube does not match the voltage and rated current of the line, it must not be connected to the line for use. 3.
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Most advanced stirling cooler in the world. Very powerful cooling ability.
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This unit has been specifically designed to meet the needs of contractors where the necessiiy or the ability to have a Cable Drum Trailer is simply not practical.Available with either a fixed spindle (shown), i.e. drum loaded by external means, or supplied self sufficient in lifting and lowering as used on standard Cable Drum Trailers in our range.The unit comes with a range of options to suit most applications for both the Utility and Rail industries.Diesel, Petrol, Electric or PTO Drum Drive system for ease of cable payout, unit can be pendant controlled.
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Due to electromagnetic induction, the metal shielding layer (or metal sheath) of long line high-voltage single core power cables generates induced voltage, which leads to aging of insulation and reduction of insulation grade, resulting in reduced cable life. Once the induced voltage exceeds the sheath breakdown voltage, the outer sheath is broken down, forming a multi-point grounding fault of single core cables.
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Designed and supplied specifically for "Off Road Use", these Site trailers are all fitted with some form of brake system, hand parking facility and basic vehicle lights. Although not built to conform with EEC braking/lighting directives certain Non EEC countries have operated these units on the highway under the proviso that Towing speeds indicated must not be exceeded at full rated payload.
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The SEB range of Adjustable Width Cable Drum Trailers are designed to cope with the ever increasing size of Cable Drums, High Voltage cables are being laid underground instead of over headlines.
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