Intelligent Boundary Vacuum Load Break Switch 12kV 630A/1250A

ZW20-12(F) Intelligent Boundary Load Switch Pole-mounted Vacuum Sectionalizer with Controller

Product Description:

ZW20-12(F) Boundary Load Switch is one of our new products. Boundary circuit breaker is a multifunctional intelligent device with the function of vacuum breaker,vacuum load switch, recloser, sectionalizer four switches. The main configuration consists of vacuum breaker, CH-40 controller, external voltage transformer (Note: distribution automation line ring network available in bilateral PT) three parts. Products are widely used in 10kV, 13kV city, rural power grid space ring network for disconnecting switch, contact switch, automatic switch device which can implement the ring deployment line load. It can be used as boundary switch (commonly known as watchdog) in the branch line of power supply, used as reclosers and sectionalizers in feed overhead distribution network. Boundary circuit breaker with remotemanagement pattern, protection and control functions and communication functions. Reliable detection in judgment, mA level zero sequence current and shortcircuit current between phases, realize the automatic removal of single-phase grounding fault and phase to phase short circuit fault.The main switch is vacuum arc and insulation adopts SF6, N2 mixed gas. The case introducting of Japan, Germany, French gas sealing, explosion proof, insulation system technology, the overall excellent sealing performance. Inside is filled with SF6, N2 mixed gas which does not leak, not affected by the external environment. The spring operating mechanism with miniaturization and performance optimization design, action reliability is much higher than the traditional spring mechanism.



Controller Introduction:

1.With 485 / 232 communication interface, or through optical fiber, wireless remote monitoring; Acceleration function after reclosing;when the switch is heavy,automatic acceleration tripping in case of permanent fault;

2.Remote / manual closing to accelerate tripping, and closing reclosing: The user sends power after repairing the line, if he forgets to remove the grounding switch,should accelerate tripping.

3.Three reclosing delay time can be adjusted;

4.The jump closing circuit adopts anti-misoperation design and has anti-jump function;

5.Zero-sequence current can distinguish between in-zone and out-of-zone faults;

6.The remote control switch is designed to prevent misoperation.

Feature:

1.Quick Break Protection: The boundary load switch is designed to quickly open the circuit in the event of a fault or abnormal conditions. It provides rapid fault clearing and minimizes the duration of power interruptions.

2.Overcurrent Protection: The load switch incorporates overcurrent protection mechanisms to detect and respond to excessive currents. It helps prevent damage to the distribution system by tripping and isolating faulty sections.

3.Triple Reclosing: The boundary load switch may have the capability to automatically attempt three reclosing operations after a fault-clearing operation. This feature helps in identifying temporary faults and automatically restoring power if the fault is cleared.

4.Incident Records: The load switch can record and store information about fault events, including fault type, location, and timestamps. This data is valuable for analysis, troubleshooting, and maintenance purposes.

5.Inrush Protection: The load switch is equipped with inrush protection to handle high inrush currents that occur during the energization of transformers or other loads. It ensures stable and reliable operation during these transient conditions.

6.Zero Sequence Protection: The boundary load switch may include zero sequence protection to detect and respond to earth faults or unbalanced conditions in the system. This helps in identifying and isolating faults that pose a risk to the system's stability.

7.Real-Time Clock: A real-time clock feature allows the load switch to record the timing of fault events and other operations accurately. It enables precise time synchronization and facilitates event sequence analysis.

8.Acceleration after Reclosing: After successful reclosing attempts, the load switch may provide an acceleration function to increase the speed of tripping in case the fault persists. This helps in minimizing damage to the system and enhancing fault clearance efficiency.

9.Real-Time Status Queries: The load switch can provide real-time status information, such as the position (open or closed), fault indication, and operational data. This allows operators to monitor the switch's condition and make informed decisions.

10.Smart Pocket PC Controls: Some load switches can be controlled and monitored using a smart pocket PC or similar handheld devices. This enhances the convenience and flexibility of managing the switch remotely.

11.Local/Remote Settings: The load switch can be configured and adjusted locally at the installation site or remotely through communication interfaces. This allows for convenient and flexible control and configuration options.

12.Active Fault Reporting: The load switch can actively report fault events or abnormal conditions to a central control or monitoring system. This enables quick identification and response to faults, facilitating efficient fault management.

13.GSM Short Message Function: Some load switches may have the capability to send short message notifications or alerts via GSM (Global System for Mobile Communications) networks. This enables remote monitoring and notification of fault events or operational status.

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 Parameter:

Technical Parameter of Controller: