ZW8-12 high voltage vacuum circuit breaker (hereinafter referred to as "ZW8-12 high voltage vacuum circuit breakers"), three-phase AC 50Hz outdoor high voltage switchgear; mainly used for urban and rural power grid and the 10kV system, as a sub, load current, overload current and short circuit current purposes; also be used for other similar places. ZW8-12 series outdoor AC high voltage vacuum ZW8-12 high voltage vacuum circuit breaker in line with the national standard GB1984 "AC high voltage ZW8-12 high voltage vacuum circuit breakers" and IEC 60056 "high voltage AC ZW8-12 high voltage vacuum circuit breakers" and other standards. 2. Model and meaning ZW8 3. Conditions 3.1 normal conditions a) ambient air temperature: -40 ℃ ~ + 40 ℃; b) Altitude: not exceed 2000m; c) the ambient air can be subjected to dust, smoke, corrosive gases Pollution steam or salt spray; d) wind speed does not exceed 34m / s (equivalent to 700Pa on the cylindrical surface); e) vibration or earth from the switch and control equipment at the unit is negligible; f) contamination level : Ⅲ grade. 3.2 Special conditions of use ZW8-12 voltage vacuum circuit breaker under normal conditions of use may differ from the use specified above, then the user's requirements and the manufacturer should consult and obtain consensus. 3.3 As above these normal conditions of use, negotiated by the user and manufacturer. ZW8-12 outdoor vacuum 4. Technical parameters 4.1ZW8-12 high voltage vacuum circuit breaker main technical parameters 4.2ZW8-12 voltage vacuum circuit breaker assembly to adjust the mechanical properties of the parameter 4.3 with unilateral isolation switch (as viewed from the agency on the left) of ZW8-12 high-voltage vacuum circuit breakers. Mechanical life of isolation switch is 2000 times. 4.4ZW8-12 high voltage vacuum circuit breaker can be configured manually operated mechanism (only can be manually open and close operation) or electric operation (either manual operation, but also electric operation); 4.5ZW8-12 configurable anti-voltage vacuum circuit breaker Feeder surge protection devices, to achieve inrush delay and overcurrent fault delay; 4.6ZW8-12 high voltage vacuum circuit breaker can be built-in bushing current transformer 2 to 6, the maximum ratio of 1000/5, a minimum of 50/5 ; (other special requirements, in consultation with the manufacturer). 4.7ZW8-12 high voltage vacuum circuit breaker can configure an external voltage transformer (see Figure 7), the number of 1 to 2, respectively; configurable built-in voltage transformer (see Figure 8), the other can install the fuse, the number 1 months; voltage transformer can be used as line voltage provided by the power supply or detection; 4.8ZW8-12 high voltage vacuum circuit breaker manual and electric diagram shown in Figure 1 and Figure 2. (Note: The high-voltage vacuum circuit breaker with ZW8-12 secondary wiring diagram-based) 5.ZW8-12 high voltage vacuum circuit breaker structural features and operation principle 5.1ZW8-12 high voltage vacuum circuit breaker structure shown in Figure 3. ZW8-12 by high-voltage vacuum circuit breaker actuator, conductive circuits, insulation systems, seals and housing components. The overall structure of the three-pole total box-type conductive loop is formed by the inlet and outlet conductive rod, static and dynamic end of the conductive plate, a conductive connection to the vacuum interrupter clip from outer insulation is mainly achieved by high-voltage bushing, with the ability to engage in filthy, insulating composite insulation. ZW8-12 high voltage vacuum circuit breaker with isolation knife, and the other by three-pole isolating switch (driven by another axis) connected in series, a reliable anti-error mechanical interlock between ZW8-12 high voltage vacuum circuit breakers and disconnectors . When ZW8-12 voltage vacuum circuit breaker is in the closed position, isolating switch can not be opening and closing operation; when ZW8-12 high voltage vacuum circuit breaker is in the OFF position, isolating switch to be opening and closing operation. 5.2 Action principle breaker is operated by actuator, see Figure 3. Agencies or opening spring 17 to drive three-pole circuit breaker main shaft 6 is rotated while pulling insulated operating rod 16 and crank arm 15, the vacuum interrupter moving contacts 8 opened or closed, leaving the circuit-breaker or Closing state. Isolation knife isolated from Figure 5 isolate knife knife shaft drive division. Isolation is provided between the knife and the circuit breaker mechanical interlock to ensure that the knife prior to the isolation breaker is closed, and then separated from the circuit breaker, the circuit breaker in the closed state, the operation can not be isolated from the knife, the knife in Fig. 5 isolated by another shaft 7 an actuating handle 5. Another division and isolation knife sign display. 6.ZW8-12 high voltage vacuum circuit breaker shape and installation size 7. Installation, Maintenance 7.1 preliminary understanding of the operator should adjust product performance and installation, and maintenance of knowledge, a running issue should be recorded, notified the manufacturer if necessary. 7.2 product before installation to conduct a visual inspection. Look insulating sleeve product for damage, division instructions, storage instructions if tainted installed phenomenon, box if there is deformation. After the inspection is completed, the product to be installed for use on more than 4m high columns. ZW8-12 high voltage vacuum circuit breaker with isolation switch installation should carefully check the accuracy of the mechanical interlock operation with ZW8-12 isolation switch between high-voltage vacuum circuit breakers. 7.3 product before being put into operation, they carefully check the rated voltage of each operating element, the rated current is consistent with the actual situation. With mechanism operates to check the correct operation of the various. The parameters of 7.4 ZW8-12 voltage vacuum circuit breaker at the factory inspection has been adjusted, the user does not have to start checking; after pressure test as required, to install. 7.5 ZW8-12 high voltage vacuum circuit breaker can set up a single pole, double pole can be erected. ZW8-12 high voltage vacuum circuit breaker should be smooth and securely installed on a dedicated steel frame. Installation is shown in Figure 9. 7.6 Product regular small seizure, the main check ZW8-12 voltage vacuum circuit breaker action is normal. ZW8-12 high voltage vacuum circuit breaker with isolation switch, isolating switch checks twice a year to check the contents of a mechanical interlock action and ZW8-12 isolation switch between high-voltage vacuum circuit breaker is normal, and inject some grease to moving parts . Desiccant 7.7 ZW8-12 high voltage vacuum circuit breaker at the bottom of the pores of silica gel, to be replaced when its color turns pale yellow. May be replaced on a regular basis according to local climatic conditions. 8. Transport, acceptance and storage 8.1 Transportation Transportation entire load must be secured in a closed box. During transport shall not flip, tilt, shock measures need to be taken. When the super-high-voltage vacuum circuit breaker body hanging ZW8-12 hook four rings in the box may not be directly handling epoxy insulation barrel. Ultra-high-voltage vacuum circuit breaker when hanging ZW8-12 with isolation switch, the center of gravity somewhat isolating switch side, slowly lifting should be. 8.2 Acceptance should be carried out after the user receives the following acceptance ZW8-12 voltage vacuum circuit breaker: 1) Check the packaging is damaged; 2) a control product packing list to check the file, the attachment is complete; 3) Check ZW8-12 high voltage vacuum circuit breaker technical parameters on the nameplate, product certification meets the order requirements. 8.3 Storage The ZW8-12 high voltage vacuum circuit breaker should be stored in dry, ventilated, moisture-proof, shock-proof and anti-invasion of harmful gases indoor, long-term storage environment should be regularly checked for compliance. Packing, unpacking and storage should be in a dry room, and all parts of the product should be checked for completeness and conformity. 9. Common Faults and troubleshooting solutions for common problems and troubleshooting 10. The random file and spare parts 10.1 product certification; 10.2ZW8-12 high voltage vacuum circuit breaker manual; 10.3 factory inspection report; 10.4 packing list; 10.5 secondary wiring Figure; 10.6 Actuator manual; 10.7 random spare parts.