(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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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fails, so that the grounding terminal of the disconnector can be automatically disconnected, and the arrester can be withdrawn from operation to prevent further expansion of the accident.
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GN30-12 rotary indoor high-voltage disconnector is a new type of rotary contact disconnector. Its main structure is to fix two groups of insulators and contacts on the upper and lower planes of the three-phase common chassis, and to achieve switch on by rotating the contact.The GN30-12D switch is an additional form with grounding knife on the basis of the GN30-12 switch, which can meet the needs of different power systems. This product is compact in design, small in point space, strong in insulation capacity, and easy to install and adjust.
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LXQ (LXQ3, LXQ4) type nonlinear resistance harmonic eliminator (harmonic eliminator for short) for neutral point of voltage transformer is installed in primary winding (or secondary winding) Y of 6~35kV voltage transformer (PT for short). A nonlinear resistance harmonic damping device between the neutral point of the junction line and the ground. Compared with the traditional RXQ type harmonic eliminator, the LXQ type harmonic eliminator has been greatly improved in design to improve the thermal capacity of the harmonic eliminator. The harmonic eliminator has superior electrical performance.
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(H) GW5 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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1. After opening, establish a reliable insulation gap to separate the equipment or lines to be repaired from the power supply with an obvious disconnection point to ensure the safety of maintenance personnel and equipment [2].2. Change the circuit according to the operation needs.3. It can be used to open and close the small current in the line, such as the charging current of bushing, bus, connector and short cable, the capacitive current of switch voltage equalizing capacitor, the circulating current during double bus switching and the excitation current of voltage transformer.4.
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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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FGW9-12 high-voltage load disconnector is a high-performance disconnector developed by our company by absorbing foreign advanced technology. It has the advantages of reliable contact, large current carrying capacity, and certain arc protection capability. It is used in the power system with the rated voltage of 10kV to connect and isolate the power supply when there is voltage.
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GW9-10 outdoor high-voltage disconnector is a single-phase AC 50HZ high-voltage switchgear, which is used in the power system with the rated voltage of 10KV to connect or disconnect the power supply with voltage and without load.The disconnector is operated with insulating rod.□ Operating environmenta. Altitude not exceeding 1000mb. Ambient air temperature: upper limit+40 ° C, lower limit - 30 ° C in general areas, and - 40 ° C in alpine areasc. Wind pressure shall not exceed 700Pa (equivalent to wind speed of 34m/s)D. Seismic intensity shall not exceed 8 degreesE.
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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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Product OverviewGW1-12G (D) series outdoor high-voltage disconnectors are unipolar high-voltage switchgear. They are used to open and close the circuit when there is voltage or no load in the outdoor 12KV line network. The switches with grounding knives are equipped with CS mouth type manual mechanisms to prevent the misoperation of live grounding wires and grounding wires, "closing", etc.
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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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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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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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purposeHigh voltage disconnector is a kind of high-voltage equipment used to connect or isolate power supply under the condition of voltage and no load.□ Service conditions1. Altitude not exceeding 1000m2. Ambient air temperature: upper limit+40 ° C in general area, lower limit 30 ° C in general area3. The wind pressure shall not exceed 700Pa. (equivalent to wind 34m/s)4. The seismic intensity shall not exceed 8 degrees;5. No place with frequent violent movements;6.
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GN38-12KV series indoor disconnectors are designed and manufactured to meet the needs of compact and miniaturized development of fixed high-voltage cabinets and ring network cabinets. It has a three position structure, fully insulated bottom plate, and is equipped with coaxial locking and perfect mechanical interlocking mechanism, which is compact in shape.
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Conductive partThe fixed contact is composed of a copper plate bent into a right angle, and the perforated end of the fixed contact can be connected with the bus through a screw; The other end is short, and it contacts the moving blade (moving contact) when closing.Two copper plates form a contact strip, also known as a moving contact, which can rotate around the shaft for a certain angle. When closing, it holds the static contact. There is a clamping spring between the two copper plates to adjust the contact pressure between the dynamic and static contacts.
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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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Very good delivery time. Lowest price in the world. Can work with C308, C330 or C363 stirling cooler. Very good reliability. Can work with C308,Very good delivery time. Lowest price in the world.Very good reliability.
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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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Most advanced stirling cooler in the world. Very powerful cooling ability.
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It can diagnose the fault of the thermal imager through the communication port of the thermal imaging system, locate the fault group components conveniently and quickly according to the built-in fault expert database, and greatly improve the maintenance efficiency of the fault thermal imager;Through the self-developed comprehensive performance test algorithm of thermal imager, it is convenient and accurate to test the performance parameters of thermal imager: minimum resolvable temperature difference (MRTD), minimum detectable temperature difference (mdtd), field of view (FOV), zero travel mom
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