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Models for Liaoning, Jilin, and Shandong: zw20af-12 Outdoor High-voltage Demarcation Vacuum Circuit Breaker
1.Overview of ZW20-12 Vacuum Circuit Breaker
ZW20 vacuum circuit breaker is a circuit breaker with SF6 gas insulation and vacuum arc extinguishing.,It is one of the main product lines of Zhejiang Chuanlong Electric Co., Ltd.The ZW20 vacuum circuit breaker with watchdog demarcation switch, when combined with an intelligent controller, has functions such as manual energy storage, manual opening and closing, electric opening and closing, remote opening and closing, overcurrent protection, instantaneous trip protection, ground protection, reclosing, self-diagnosis, event recording, historical fault query, and status uploading. It can realize the automation and all-weather monitoring and management of distribution lines, and is very suitable for use in large and medium-sized users and urban and rural distribution networks. It is a must-have supporting product in the future smart grid system.
For purchasingZW20-12,zw20-12f series vacuum circuit breakers,and obtaining more instruction manuals, technical data, and purchasing information of the ZW20 demarcation vacuum circuit breaker, please contact us directly.
Common purchasing configurations of the ZW20 vacuum circuit breaker are as follows:
Carbon steel plastic-sprayed shell+Electric operating mechanism+With zero-sequence ground protection+Voltage transformer+Watchdog intelligent controller;
Carbon steel plastic-sprayed shell+Electric operating mechanism+With zero-sequence ground protection+Voltage transformer+Watchdog intelligent controller+Isolating knife switch;
Stainless steel shell+Electric operating mechanism+With zero-sequence grounding protection+Voltage transformer+Watchdog intelligent controller;
Stainless steel shell+Electric operating mechanism+With zero-sequence grounding protection+Voltage transformer+Watchdog intelligent controller+Isolating knife switch;
Of course, there are also individual customers with low requirements. They use a manual operating mechanism instead of the operating mechanism. In this case, the configuration is
Carbon steel powder-coated shell or stainless steel shell+Manual operating mechanism+Instantaneous overcurrent protection+Optional isolating knife switch.
Therefore, we hereby suggest that customers inform us of the above information when purchasing.
2. Composition of ZW20 series vacuum circuit breakers
ZW20F-12 outdoor high-voltage sectionalizing switch is mainly composed of a ZW20F-12 vacuum circuit breaker body, an FDR controller, and an external voltage transformer. The three parts are electrically connected through an aviation socket and an outdoor sealed control cable. According to the user's management needs, an on-site remote control device and operating software ("GPRS" remote or "GSM SMS)
3. zw20 Main functions of the sectionalized vacuum circuit breaker
Produced by Zhejiang ChuanlongZW20 Vacuum circuit breakerIt has functions such as manual energy storage, manual opening and closing, electric opening and closing, remote control opening and closing, over - current protection, quick - break protection, grounding protection, reclosing, self - diagnosis, event recording, historical fault query, and state uploading. It can realize the automation and all - weather monitoring and management of distribution lines, and is very suitable for use in large and medium - sized users and urban and rural distribution networks. It is a must - select supporting product in the future smart grid system.
4. zw20 - 12 Structure of the vacuum circuit breaker
Manufactured by Zhejiang Chuanlong Electric Co., Ltd.ZW20 VacuumThe main body structure of the circuit breaker consists of an insulation system, an operating system, a conductive system, a sealing system, and a measurement system.
? The conductive system is composed of incoming and outgoing conductive rods, conductive clamps, copper flexible connections, and a vacuum interrupter. It has a strong current - carrying capacity, and its arc - extinguishing and breaking performance are better than similar products.
? This product uses a relatively mature sealing structure. The contact points between rotating parts and the housing are sealed by adding sealing rings to slots and stamping forming grooves to ensure good air - tight performance. The main circuit, secondary components, and operating mechanism are all sealed in SF6 gas (zero gauge pressure), which improves the electrical operating performance of the switch components.
? This product uses SF6 gas insulation inside the housing, which greatly improves the electrical safety performance of the internal structure of the switch. The incoming and outgoing line bushings are integrally cast with epoxy resin and silicone rubber. The A and C phases adopt outward - flaring corner - type bushings, which increases the phase spacing, ensures good external insulation, and has excellent performance. It is a maintenance - free product.
?PrecisequeThe precise measurement system consists of *** current transformers and zero-sequence transformers. For this product, a current transformer with an accuracy class of 1 and a transformation ratio of 200 - 600/5 is configured at each of the phase A and phase C incoming line ends to detect the line operating current in real-time, so as to ensure the quality of line operation. A zero-sequence transformer with an accuracy class of 1 and a transformation ratio of 20/1 is configured on the three-phase outgoing line side. It can detect the ground current in the range of 0.2A - 6A and has a good linear relationship, ensuring the accuracy of monitoring data.
?The circuit breaker body can be installed by pole-mounted hoisting or pedestal mounting. The installation is convenient and flexible, greatly increasing the options for installation methods. The sectionalizing controller is installed in a place under the circuit breaker for easy viewing. The secondary wiring is connected to the sectionalizing circuit breaker through a cable. The power transformer (voltage PT) can be placed side by side with the circuit breaker or above the switch body.
?This device has the functions of electric automatic energy storage, manual energy storage, manual opening and closing, and electric opening and closing. At the same time, it has the function of remote opening and closing, which can meet the operation mode requirements of different users.
?An explosion-proof device is installed on the top of the box. Even if an accident, discharge, or short-circuit fault occurs inside the device body, there will be no leakage of high-temperature gas or flying objects.
Five、ZW20 Introduction to the illustration of the vacuum circuit breaker.The following is an illustration of ZW20 with an isolator and a voltage transformer.
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