GuangDong Heng AnShun Electrical Power Equipment Service Co., Ltd.
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Pole Mounted Auto Recloser Circuit Breaker 630A 700Pa 3000m Altitude For Protection Of Electrical Substation
Product Description:
The ZW32-12 pole mounted circuit breaker is a robust distribution equipment designed for outdoor applications. It operates at a rated voltage of 12kV and a three-phase AC frequency of 50Hz. This circuit breaker is primarily utilized to interrupt and close the load current, overload current, and short circuit current within electronic systems.
One of the key advantages of the ZW32-12 circuit breaker is its versatility. It finds extensive use in various settings, including substations, industrial and mining enterprise distribution systems, and rural power grids. This makes it a suitable choice for a wide range of protection and control applications.
Additionally, the ZW32-12 circuit breaker can serve as a sectional switch, allowing for efficient power grid operation. By utilizing it in this manner, specific sections of a distribution network can be isolated for maintenance or fault handling purposes.
To enhance its functionality further, the ZW32-12 circuit breaker can be integrated with a controller. This integration enables the achievement of distribution network automation, facilitating remote control, monitoring, and automation of the circuit breaker's operations. This feature contributes to the overall efficiency and reliability of the distribution network.
Advantage:
1.Mechanical Endurance: The circuit breaker should be designed to withstand a certain number of mechanical operations. This could be specified as a number of operating cycles, such as 10,000 or 20,000 mechanical operations, before requiring maintenance or replacement of key components.
2.Electrical Endurance: The circuit breaker should have a defined electrical endurance, indicating the number of electrical operations it can perform reliably. This includes the ability to interrupt fault currents and load currents without degradation in performance. Electrical endurance values are typically provided in terms of the number of operations or short-circuit breaking current ratings.
3.Short-Circuit Current Rating (SCCR): The circuit breaker should have a specified short-circuit current rating, indicating the maximum prospective fault current it can safely interrupt. This rating ensures that the circuit breaker can handle fault conditions without exceeding its design limits.
4.Insulation Level: The circuit breaker should have appropriate insulation levels to withstand the voltage stresses it is subjected to. This includes insulation coordination in accordance with international standards, such as IEC 62271-100 or equivalent.
5.Enclosure Protection: The circuit breaker's enclosure should provide adequate protection against external influences, such as solid objects, dust, water, and other environmental factors. It should have a defined Ingress Protection (IP) rating, indicating its resistance to the ingress of foreign objects and water.
6.Mechanical Strength: The circuit breaker should be mechanically robust to withstand transportation, installation, and normal operating conditions. It should be designed to resist mechanical stresses, vibrations, and shocks.
7.Corrosion Resistance: Since it is an outdoor circuit breaker, it should be designed to resist corrosion. This can be achieved through the use of appropriate materials, coatings, and treatments that provide protection against environmental corrosion factors.
5.UV Resistance: To withstand exposure to sunlight, the circuit breaker's enclosure and materials should have UV-resistant properties to prevent degradation or discoloration due to prolonged sun exposure.
Feature:
1.High-voltage vacuum circuit breaker: It adopts vacuum arc extinguishing technology and has good breaking performance and strong arc extinguishing capability. It can reliably interrupt load currents, overload currents, and short circuit currents.
2.Outdoor design: It is suitable for outdoor environments and has good weather resistance and protection performance, allowing it to operate normally under various harsh weather conditions.
3.Rated voltage and frequency: It is suitable for distribution systems with a rated voltage of 12kV and a three-phase AC frequency of 50Hz, meeting the corresponding power requirements.
4.Protection and control functionality: It is mainly used for load protection and control in substations and industrial and mining enterprise distribution systems. It can effectively protect the safe operation of power equipment and systems.
5.Rural power grid application: Due to the frequent operations in rural power grids, this circuit breaker is widely used and can be used as a sectional switch and for distribution network automation in rural power grids.
Structure:
The load switch is composed of three parts: pillar, base, and suspension for installation, fixing, and lifting.
1.The pillar-mounted high-voltage load switch with a vacuum arc extinguishing chamber has stable and reliable breaking performance. It features no combustion or explosion hazards, safety, maintenance-free, small size, lightweight, and long service life.
2.The load switch adopts a fully enclosed structure with good sealing performance, moisture and dew prevention capabilities, suitable for use in high-temperature and humid areas.
3.The load switch can be manually or electrically operated for opening and closing, and it can also be remote-controlled.
4.The operating mechanism is innovative, simple, reliable in action, compact in size, and has a mechanical life of up to 10,000 operations. The energy storage motor is a DC permanent magnet motor, and the voltage level can be selected from -220V, 110V, 48V, or 24V.
Application:
1.Substations: It is commonly used in both indoor and outdoor substations for protection and control of medium-voltage power distribution. The vacuum circuit breaker ensures reliable interruption of fault currents, overload currents, and load currents, safeguarding the substation equipment.
2.Industrial and mining enterprises: The ZW32-12 vacuum circuit breaker is employed in the distribution systems of industrial and mining enterprises to protect motors, transformers, and other electrical equipment from overcurrents and short circuits. It helps maintain the stability and safety of the power supply in these facilities.
3.Rural power grids: Due to its ability to withstand frequent operations, the vacuum circuit breaker is suitable for application in rural power grids. It can be used as a sectional switch, allowing for efficient segmentation of the power grid. Additionally, when equipped with a controller, it enables automation of the distribution network, improving the reliability and efficiency of the rural power system.
4.Commercial buildings: The vacuum circuit breaker is also utilized in commercial buildings for power distribution and protection. It ensures safe and reliable operation of electrical systems, preventing damage to
Technical Parameter:
| Serial No. | Parameter | Unit | Data | |||||||||
| 1 | Rated voltage | kV | 12 | |||||||||
| 2 | Insulation level of Fracture | Working Frequency(Dry Test/Wet Test) | 48 | |||||||||
| Voltage of Lightning Shock Test (Peak) | 85 | |||||||||||
| 3 | Level of Insulation to ground/phase to phase | Working Frequency | Dry Test | 42 | ||||||||
| Wet Test | 34 | |||||||||||
| Voltage of Lightning Shock Test (Peak) | 75 | |||||||||||
| 4 | Rated Current | A | 630 | |||||||||
| 5 | Rated thermal stability current (Effective value) | kA | 20 | |||||||||
| 6 | Rated short-circuit breaking current (Effective value) | 25 | ||||||||||
| 7 | Rated thermal stability time | s | 4 | |||||||||
| 8 | Rated short-circuit closing current(Peak) | kA | 63 | |||||||||
| 9 | Rated dynamic stability current (Peak) | |||||||||||
| 10 | Mechanical lifetime | times | 10000 | |||||||||
| 11 | Opening rated current | 1000 | ||||||||||
| 12 | Surrounding air temperature | Highest Temperature | ℃ | -55 | ||||||||
| Lowest Temperature | +60 | |||||||||||
| Difference ofMaximum daily temperature | K | ≤25 | ||||||||||
| 13 | Altitude | m | ≤2500 | |||||||||
| 14 | Humidity | Average of daily relative humidity | % | ≤95 | ||||||||
| Average of monthly relative humidity | ≤90 | |||||||||||
| 15 | Earthquake-resistant capacity | Horizontal acceleration | g | 0.25 | ||||||||
| Ground vertical acceleration | 0.125 | |||||||||||
| Safety Factor | / | 1.67 | ||||||||||
| 16 | Wind Speed | m/s | ≤35 | |||||||||
| 17 | Ice Thickness | mm | ≤20 | |||||||||
