1 Overview
  ZW32-12 series outdoor exchange high voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker") is a three-phase AC 50Hz outdoor high voltage switchgear, mainly used for rural power network and city network 10kV outdoor power distribution system, as the points, load current, Overload current and short circuit current; can also be used for other similar places. ZW32-12 series of outdoor exchange high voltage vacuum circuit breaker in line with national GB 1984 "AC high voltage circuit breaker" and the International Electrotechnical Commission IEC 60056 "high voltage AC circuit breaker" and other standards.
  2. Model and meaning
  3. Conditions of use
  3.1 normal use conditions
  A) Ambient air temperature: -40 ° C to + 40 ° C;
  B) Altitude: no more than 2000m;
  C) the surrounding air can be dust, smoke, corrosive gases, steam or salt fog pollution;
  D) wind speed does not exceed 34m / s (equivalent to 700Pa on the cylindrical surface);
  E) vibration or ground from the switchgear and control equipment is negligible;
  F) Pollution level: Grade III.
  3.2 special conditions of use
  Circuit breakers can be used in different conditions than the normal use of the above conditions, then the user's request and the manufacturer should be in consultation,
  And get the same opinion.
  3.3 If the above normal conditions of use, by the user consultation with the manufacturer.
  4. Technical parameters
  4.1 circuit breaker main technical parameters
  4.2 circuit breaker assembly adjustment parameters
  4.3 CTB spring operating mechanism of the main technical parameters
  4.4 ZW32 outdoor vacuum circuit breakers with disconnectors, in addition to meet the requirements of Table 1, Table 2, the isolation switch part should also meet the requirements of Table 4
  5. Circuit breaker structure characteristics
  5.1 circuit breaker with three-phase pillar structure, with breaking performance stable and reliable, no combustion and explosion hazard, maintenance-free, small size, light weight and long service life and so on.
  5.2 circuit breaker with a fully enclosed structure, good sealing performance, help to improve the moisture, anti-condensation performance, especially for cold or wet areas.
  5.3 three-phase pillar and current transformer using imported outdoor epoxy resin solid insulation, or the use of indoor epoxy resin silicone rubber insulation insulation; with high and low temperature resistance, UV resistance, aging resistance and so on.
  5.4 operating mechanism using miniature spring operating mechanism, energy storage motor power is small, sub-closing energy consumption is low; mechanism transmission using direct transmission mode, the number of parts less, high reliability. The operating mechanism is placed in the sealed mechanism box, which solves the problem of corrosion of the operating mechanism and improves the reliability of the mechanism.
  5.5 circuit breaker points, closing operation can be used manual or electric operation and remote remote control operation. With the intelligent controller supporting the realization of power distribution automation, can also be combined with the composition of the controller with automatic recloser, segmentation device.
  5.6 circuit breaker can be installed two-phase or three-phase current transformer for over-current or short circuit protection, can also provide intelligent controller to collect current signal; according to user requirements can be installed metering current transformer.
  5.7 circuit breaker can be connected with three-phase disconnector, in the disconnector sub-gate state has obvious visible fracture, and with the circuit breaker between the anti-error interlock device. When the circuit breaker is in the closing position, the disconnector can not be divided and closed. The circuit breaker can only be operated when the isolator is fully closed or fully opened. Can be equipped with arrester pillar insulators, easy maintenance.
  6. Action principle
  6.1 manual mechanism action principle
  Closing operation: first pull the energy storage handle for energy storage, the applied torque from small to large, when the closing spring over the moment, closing the spring release of energy, to promote the energy storage system counterclockwise rotation and drive the arm rotation, driven The drive shaft closes the circuit breaker and the sub-gate is engaged with the subrack, so that the circuit breaker is in the closed state. When the mechanism is closed, the cam and the rotating sleeve are disengaged and the mechanism can not be closed again.
  Sub-gate operation: When the circuit breaker is closed, pull the opening handle or when the line current exceeds the setting value of the anti-surge device, the overcurrent coil is driven to rotate the subrack, In the sub-gate driven by the opening of the circuit breaker.
  6.2 Actuation principle of electric mechanism
  Energy storage operation: pull the energy storage handle, or energy storage motor rotation, driven by the transmission gear to make the cam rotation, the closing spring is gradually elongated, when the spring is over, the cam will not be rotated by the positioning device, circuit breaker In the ready-to-close state; while the cam and the drive shaft from the body can not re-energy storage.
  Closing operation: After the completion of energy storage, pull the manual closing handle or apply voltage to the closing coil, so that closing the axle rotation, closing the arm and closing axle trip, closing the spring to release energy, drive the drive shaft So that the circuit breaker closing, while the sub-gate spring is stored. The body in the closing state, and then carry out energy storage operation, closing the spring again was elongated, the spring was over, closing the axle was interlocked device to seize, to avoid the mechanism of closing. In the closed state of energy storage, the mechanism is in the reclosing state, can achieve "O-0.3S-CO" a reclosing operation.
  Sub-gate operation: After closing the circuit breaker, pull the opening handle or apply voltage to the sub-gate or when the line current exceeds the setting value of the anti-surge device, the overcurrent coil is driven to turn the subrack The arm is broken, the transmission rod in the sub-gate driven by the circuit breaker to open.
  Note: The operating mechanism over-current coil for short-term work system, not a long flow.
  Circuit breaker overcurrent protection and mechanism control electrical schematic diagram shown in Figure 3. (Note: to the circuit breaker with the secondary wiring schematic diagram)
  7. The shape and installation dimensions of the circuit breaker
  8. Installation and maintenance
  8.1 The operator should initially understand the performance and installation of the product, maintain knowledge, keep track of running problems and notify the manufacturer if necessary.
  8.2 The product should be visually inspected before installation. Observe the insulation of the product casing damage, sub-instructions, energy storage instructions whether there is missing phenomenon, whether the deformation of the box and so on. After the inspection, the product should be mounted on a pillar above 4m. The circuit breaker with disconnector should be carefully checked for the accuracy of the mechanical interlock between the disconnector and the circuit breaker.
  8.3 Before the product is put into operation, carefully check the rated voltage of each operating element, the rated current and the actual situation is consistent. And operate with the organization to check whether the various actions are correct.
  8.4 The parameters of the circuit breaker in the factory inspection has been adjusted, the user does not have to boot check; according to the requirements of the pressure test, you can install.
  8.5 circuit breakers can be set up single pole, you can also set up double rod. The circuit breaker should be mounted on a special steel frame smoothly and firmly. The installation diagram is shown in Figure 19.
  8.6 products on a regular basis for small inspection, the main check the circuit breaker is normal. With the disconnector of the circuit breaker, disconnector check twice a year, the contents of the isolation switch and the circuit breaker between the mechanical interlocking action is normal, and in the moving parts into some grease.
  9. Transport, acceptance and storage
  9.1 Transport
  Transport will be packed into a closed box to be fixed. Transport process shall not be reversed, tilt, need to take shock measures. Super-cut circuit breaker body, the hook on the box on the four rings, not directly carry epoxy insulated tube. Super-cut circuit breaker with isolation switch, the center of gravity on the side of the isolation switch, lifting should be slow.
  9.2 Acceptance
  After the user receives the circuit breaker, the following acceptance work should be carried out:
  1) check the packaging is damaged;
  2) check the product packing list check the file, the annex is complete;
  3) check the circuit breaker on the nameplate of the technical parameters, product certification is consistent with the order requirements.
  9.3 Storage
  The circuit breaker should be stored in the dry, ventilated, moisture, shock and anti-harmful gas invasion of the indoor, long-term storage should be regularly checked whether the environment meets the requirements. Packing, unpacking and storage should be carried out in a dry room, the product and the parts to be checked whether the integrity and consistency.
  10. Common faults and troubleshooting methods
  Common faults and troubleshooting methods