Watchdog on the column of 10KV line switch vacuum circuit breaker-Shaanxi Taikai High Voltage Switch Manufacturing Co., Ltd. The vacuum interrupter is the core component of the vacuum switch. It is supported or sealed by glass or ceramics. There are dynamic and static contacts and The shielding cover has negative pressure in the room, and the vacuum degree is 10-4 ～ 10-6 Pa, which guarantees its arc extinguishing performance and insulation level when breaking. With the increase of the use time of the vacuum arc extinguishing chamber and the increase of the number of interruptions, and the influence of external factors, the vacuum degree gradually decreases, and the interruption performance also decreases. When the vacuum degree is less than 1.3 × 10-2 Pa Time, it will lead to the instability of breaking and closing capacity. Therefore, the following points should be noted:
(1) The vacuum degree of the vacuum arc extinguishing chamber when shipped from the factory should not be less than 1.3 × 10-5 Pa.
(2) Before leaving the factory, the vacuum switch should undergo strict inspection and assembly, and the bolts of the arc extinguishing chamber should be tightened during maintenance to ensure that it is evenly stressed.
(3) Design to ensure the concentricity of the conductive rod. If the concentricity of the movable conductive rod is improperly adjusted, the sealing strength of the ceramic and flange ------ metal will not be stable enough, resulting in a leak in the vacuum arc extinguishing chamber. In the wrong operation process, it is easy to cause distortion of the bellows. In order to prevent this phenomenon, hexagonal design and spline connection design can be adopted in the guide sleeve of the moving conductive rod
(4) Do not collide with the vacuum arc-extinguishing chamber with any external force. Percussion and hand tapping are strictly prohibited, and no force shall be applied during handling and maintenance. It is forbidden to put anything on the vacuum switch to prevent the vacuum arc extinguishing chamber from being damaged when falling.
10KV line switch vacuum circuit breaker on the watchdog
ZW32-12 / 630-20 outdoor pole high voltage vacuum circuit breaker
ZW32-12 overview ZW32-12 series household high-voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker") is a three-phase AC 50Hz outdoor high-voltage switchgear, which is mainly used in the 10kV outdoor distribution system of rural and urban power grids. Load current, overload current and short-circuit current; can also be used in other similar places. The ZW32-12 series of high-voltage vacuum circuit breakers meet the standards of *** GB 1984 "AC High Voltage Circuit Breaker" and the International Electrotechnical Society IEC 60056 "High Voltage AC Circuit Breaker".
ZW32-12 model and meaning
Conditions of use of ZW32-12
3.1 Normal use conditions 10KV line switch vacuum circuit breaker column watchdog
a) Ambient air temperature: -40 ℃ ～ + 40 ℃;
b) Altitude: no more than 2000m;
c) The surrounding air can be polluted by dust, smoke, corrosive gas, steam or salt mist;
d) The wind speed does not exceed 34m / s (equivalent to 700Pa on the surface of the cylinder);
e) Vibration or ground motion from the switchgear and control equipment can be ignored;
f) Pollution level: Grade III.
3.2 Special use conditions Circuit breakers can be used under normal use conditions other than those specified above, at this time the user's requirements should be negotiated with the manufacturer,
And get a consensus.
3.3 If the above normal use conditions are exceeded, the user and the manufacturer shall negotiate.
ZW32-12 technical parameters
4.1 Main technical parameters of circuit breaker 10KV line switch vacuum watchdog on column
4.2 Circuit breaker assembly adjustment parameters
4.3 Main technical parameters of CTB spring operating mechanism
4.4 ZW32 outdoor vacuum circuit breaker with isolating switch, in addition to meeting the requirements of Table 1 and Table 2, the isolating switch part should also meet the requirements of Table 4
Structural characteristics of ZW32-12 circuit breaker
5.1 The circuit breaker adopts a three-phase strut structure, which has the characteristics of stable and reliable breaking performance, no combustion, no maintenance, no maintenance, small size, light weight and long service life.
5.2 The circuit breaker adopts a fully enclosed structure with good sealing performance, which helps to improve the moisture resistance and anti-condensation performance, and is particularly suitable for use in severe cold or humid areas.
5.3 Three-phase pillars and current transformers adopt imported outdoor epoxy resin solid insulation, or adopt internal epoxy resin outsourcing silicone rubber solid insulation; have the characteristics of high and low temperature resistance, ultraviolet resistance, aging resistance and so on.
5.4 The operating mechanism adopts a miniaturized spring operating mechanism, the energy storage motor has low power, and the opening and closing energy consumption is low; the mechanism transmission adopts the direct-motion transmission mode, the number of parts is small, and the reliability is high. The operating mechanism is placed in a sealed mechanism box, which solves the problem of corrosion of the operating mechanism and improves the reliability of the mechanism.
5.5 The opening and closing operation of the circuit breaker can be manual or electric operation and remote control operation. It can be matched with an intelligent controller to realize power distribution automation, and can also be combined with a reclosing controller to form an automatic recloser and a segmenter.
5.6 The circuit breaker can be equipped with two-phase or three-phase current transformers for over-current or short-circuit protection, and can also provide current acquisition signals to the intelligent controller; according to user requirements, it can be installed with current transformers for measurement.
5.7 The circuit breaker can be equipped with a three-phase linkage disconnector. When the disconnector is in the open state, the disconnection is clearly visible, and it has an anti-misoperation interlock device with the circuit breaker body. When the circuit breaker is in the closing position, the isolating switch cannot perform opening and closing operations; the circuit breaker can only be operated when the isolating knife is fully closed or fully opened. Insulators for lightning arresters can be connected together for easy maintenance.
10KV line switch vacuum watchdog on column-Shaanxi Taikai High Voltage Switch Manufacturing Co., Ltd.
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