ZW20(F) 12kV Outdoor Vcb Stainless Steel Made Industrial Breaker Boundary Vacuum Switch Standard IEC62271-100
Product Description:
The ZW20 series boundary vacuum switch is a type of electrical switch that operates in a vacuum environment. It is designed for medium voltage applications and is commonly used in power distribution systems.
The switch is typically constructed with a robust and durable enclosure made of high-quality materials. It incorporates a vacuum interrupter chamber, current-carrying contacts, and control mechanisms.
And the vacuum interrupter is the key component of the switch. It consists of a sealed vacuum chamber that contains two contact electrodes. When the switch is closed, the vacuum environment prevents the formation of an electrical arc during switching operations.
It is equipped with a mechanism for opening and closing the contacts. It can be operated manually or electrically, depending on the model and application requirements. The operating mechanism ensures smooth and reliable switching operations.
The ZW20 series boundary vacuum switch is available in various voltage and current ratings to suit different system requirements. It can handle medium voltage levels typically ranging from several kilovolts to tens of kilovolts.
The switch has a high breaking capacity to interrupt fault currents and protect the electrical system. The breaking capacity is specified in terms of the maximum fault current that the switch can safely interrupt without damage.
Some models of the ZW20 series may offer advanced control and monitoring features. These features can include remote control capabilities, status indication, and fault diagnostics, providing enhanced functionality and ease of operation.
The vacuum technology used in the switch ensures excellent arc extinguishing capabilities, making it a reliable and safe solution for medium voltage applications. The switch is designed to meet stringent safety standards and provide long-term performance with minimal maintenance requirements.
The ZW20 series boundary vacuum switch is suitable for a wide range of applications, including power distribution substations, industrial plants, commercial buildings, and more. It is commonly used for load switching, fault protection, and isolation in medium voltage electrical systems.
Characteristics of the controller:
1.It can be equipped with a 485/232 communication interface, or achieve long-distance monitoring through fiber optics or wireless communication. After reclosing, it has an acceleration function: when the switch recloses due to a permanent fault.
2.When a permanent fault occurs, it automatically accelerates to trip.
3.Remote control/manual reclosing with acceleration to trip, and reclosing interlock: After the user repairs the line and restores power, if they forget to remove the grounding knife switch, it should accelerate to trip.
4.The delay time for reclosing can be adjusted for all three attempts.
5.The trip/reclosing circuit is designed to prevent false operation and has anti-reclosing functionality.
6.Zero-sequence current can differentiate between faults inside and outside the zone.
7.The remote control trip/reclosing adopts a design to prevent false operation.
Application:
1.Power Distribution Substations: The ZW20 switch is commonly employed in power distribution substations, both indoor and outdoor. It is used for load switching, sectionalizing, and fault protection in distribution networks.
2.Industrial Plants: The ZW20 switch finds application in industrial plants where medium voltage power distribution is required. It is used for controlling and protecting electrical equipment, such as motors, transformers, and generators.
3.Commercial Buildings: The switch is utilized in commercial buildings, including shopping malls, office complexes, and hospitals, for reliable and safe power distribution. It ensures efficient load switching and protects critical electrical loads.
4.Renewable Energy Systems: The ZW20 switch is suitable for renewable energy systems, such as solar power plants and wind farms. It facilitates the switching and protection of medium voltage circuits in these systems.
5.Railway Electrification: The switch is employed in railway electrification projects to control and protect the power supply to railway networks. It ensures reliable and safe power distribution for train operations.
Environmental conditions:
1.Altitude:2000 meters
2.Ambient temperature:outdoors -30℃~+55℃
The highest annual average temperature is 20℃
Maximum daily average temperature is 30℃
3.Relative humidity:95%(25℃)
4.Seismic capacity:ground level acceleration 0.3g
Ground vertical acceleration 0.15g
While acting for three sine waves
Safety factor 1.67
5.Seismic intensity:7degrees
6. Maximum daily temperature difference:25℃
7.Installation location:outdoor, 10kv overhead line user responsibility demarcation point
8.Grounding method:Neutral point does not touch, the arc suppression coil grounding and low resistance grounding
Technical Parameters:
| 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, 1250 |
| 5 | Rated short-circuit breaking current | kA | 16, 20, 25 |
| 6 | Rated short-circuit breaking current breaking times | times | 30 |
| 7 | Rated short-time withstanding current | kA | 16, 20, 25 |
| 8 | Rated short-circuit duration | S | 4 |
| 9 | Rated short-circuit closing current (peak) | kA | 40, 50, 63 |
| 10 | Rated peak withstanding current | kA | 40, 50, 63 |
| 11 | Mechanical lifetime | times | over 1000 |
| 12 | Opening rated current | 10000 |
| 13 | Net Weight | kg | 180 |
Technical Parameter of Controller:
| Serial No. | Parameter | Data |
| 1 | Woking input voltage | AC220V |
| 2 | Input working frequency | 50Hz |
| 3 | Allowable voltage fluctuation range for input voltage | ±20% |
| 4 | Total power consumption of the device | ＜10W |
| 5 | Sampling value of phase current input | 60-600A |
| 6 | Low voltage operation threshold | 10-140V |
| 7 | Allowable sampling error for power input value | ±5% |
| 8 | Overcurrent protection delay time value | 0.1-0.3s |
| 9 | Setting value for zero-sequence current | 0.2-6A |
| 10 | Grounding action delay time | 0-1200s |
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ZW20(F) 12kV Outdoor Vcb Stainless Steel Made Industrial Breaker Boundary Vacuum Switch Standard IEC62271-100 Images
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