1. Reasonable design, novel structure, reliable technical performance, compact shape, light weight, flexible installation, high tensile strength, collision resistance, and no damage during transportation;2. The advantages of silicon rubber sheathed metal oxide arrester are cited.
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Suspension tempered glass insulator products are used for insulating and suspending wires in high-voltage and ultra-high-voltage AC and DC transmission lines.Type of insulator acc. RussianstandardUltimateMechanical Strength of insulators, KN, not lessDiameter of glass shed (D), mmSpacing, mmCreepagedistance, mmWeight, kgVoltage withstand, kV, not lessImpulseFrequency50 Hz, wetRadio interference levelU40BSU40BL401751001101851,7703025
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The direct coupled low light level enhanced digital camera (idc1616) adopts the advanced image tube direct coupling technology to integrate the digital camera and image intensifier, forming a new generation of low illumination digital night vision equipment with compact structure, high sensitivity and clear imaging.
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(H) GW13 type neutral point disconnector is used for three-phase AC 50Hz outdoor high-voltage electrical equipment, which is used for opening and closing the neutral point connection of transformer without load. When the knife switch is in the normal opening position, an insulation distance meeting the safety requirements can be provided.□ Structure1. Single pole V-shaped double post rotary structure, with small floor area, mainly consists of base, post insulator, conductive circuit, operating mechanism, etc.2.
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The circuit breaker has the characteristics of small size, light weight, anti-condensation, maintenance-free, etc., and can adapt to harsh weather conditions and dirty environments.
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X4 UAV miniaturized thermal imager is a small thermal imager specially designed for UAV. It has the characteristics of light weight, small volume, low power consumption, strong environmental adaptability and simple operation. The lens of the product is designed by optical passive heat difference elimination technology. It works in an ultra wide temperature range of - 40 ℃ ~ 55 ℃ without focusing, and can adapt to different areas and indoor and outdoor environments.
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Type a double tube binocular low light level observation mirror has the characteristics of clear imaging, good concealment, light structure and low power consumption. The product is suitable for driving aircraft for takeoff, landing, low altitude and ultra-low altitude missions at night or in low illumination environment; It can also be used for vehicle driving, patrol, medical rescue, observation, monitoring and reading.
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Type B double tube binocular low light level observation mirror can assist pilots to directly observe the environment and search targets in the night, complete night takeoff and landing, formation flight, visual recognition of landmark landform, heaven and earth line, aerial reconnaissance and recognition, search and recognition of ground targets at low altitude, and cooperate with forward-looking infrared to search.
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A range of Trailer mounted Cable Pulling Winches required for the installation of Power Cables where high
pulling tensions are required.
All of the units are designed with the operator in mind. Simple in operation and robustly engineered, these units
are fitted with heavy duty diesel engines powering hydraulic transmission for smooth controlled pulling, and are
fitted with a console mounted line tension indicator so that at all times the operator has a visual display of the
pulling force applied.
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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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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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summaryAs a special accessory of the arrester, the disconnector is used in series with the arrester. The purpose is to use power frequency short circuit current to make the disconnector act when the arrester is abnormal and fails, so that the grounding terminal of the disconnector can be automatically disconnected, and the arrester can be withdrawn from operation to prevent further expansion of the accident.
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Composite sheathed metal zinc oxide arresterThe core working element of the product is made of multi-element metal oxide powder mainly composed of zinc oxide, which has excellent nonlinear volt ampere characteristics, fast steep wave response and large flow capacity. Products with gap adopt self blowing gap and pressure equalizing radiation structure, which reduces the dispersion of discharge and has small impact coefficient.The adoption of composite insulating jacket conforms to the development trend of miniaturization, security and maintenance free of international electric power products.
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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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Our 110kV and 220kV composite jacket line arresters have passed the type test of the National Insulator Arrester Testing Center and have performed well.Our company has adopted a unique design of core rod through ring resistor, directly crimping end fittings and reliable sealing process to make it have the tensile strength of suspension composite insulator. (Patent No.: 2007200155561.4).
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HT series reflective infrared collimator is used for the assembly, correction and detection of infrared optical products and optical parts. It has long focal length, large aperture and high precision. It is a necessary general equipment for the production and testing of infrared optical instruments.
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Three phase combined zinc oxide arrester with composite sheath is a new type of protective appliance used to protect the insulation of power equipment from over-voltage hazards. It effectively limits the over-voltage between phases while limiting the over-voltage between phases and ground. It is widely used to protect vacuum switches, rotating motors, parallel compensation capacitors, power plants, substations, etc. This kind of combined arrester has been used for more than ten years, and the practice has proved that it is a practical and effective measure to limit the interphase overvoltage.
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Composite insulators are composed of three parts: insulating core rod, silicone rod rubber sheath and connecting fittings at both ends. Insulating mandrel is the abbreviation of epoxy resin fiberglass lead rod, it is the skeleton of composite insulator, it plays multiple functions such as supporting umbrella cover, inner insulation, connecting hardware at both ends, and bearing mechanical load, etc.
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The lightning arrester is connected between the cable and the earth, usually in parallel with the protected equipment. The lightning arrester can effectively protect communication equipment. Once abnormal voltage occurs, the lightning arrester will act to protect. When the communication cable or equipment is operating under normal working voltage, the arrester will not work and will be regarded as open circuit to the ground.
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Distribution ArresterProduct use conditions:a) Suitable for indoor and outdoor use;b) Ambient temperature -40°C~+40°C;c) The altitude does not exceed 3000m (the porcelain sleeve type does not exceed 1000m);d) The power frequency is not less than 48Hz and not more than 62 Hz;e) The long-term power frequency voltage applied between the arrester terminals does not exceed the continuous operating voltage of the arrester;f) Areas with an earthquake intensity of 8 degrees or below;g) The maximum wind speed shall not exceed 35m/s. Product Model Description:According to JB/T 8459-1996 "Surge
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The discharge counter for lightning arrester is a high-voltage electrical apparatus used to monitor the discharge action of lightning arrester. Its structure consists of nonlinear resistance, electromagnetic counter and some electronic components. Under normal operating voltage, the leakage current flowing through the counter is very small, and the counter does not act.
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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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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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(H) GW4 type outdoor high-voltage disconnector is used for three-phase AC 50Hz outdoor high-voltage electrical equipment, which is used for opening and closing of lines under the condition of voltage and no load, and for electrical isolation of electrical equipment such as overhauled high-voltage buses and circuit breakers from live high-voltage lines. It can also be used for opening and closing small capacitive or inductive currents. When the knife switch is in the normal opening position, an insulation distance meeting the safety requirements can be provided.
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