After several days and nights of hard work by our skilled technicians, the VTZ-12 truck has finally been shipped today.
1. Meaning of VTZ-12 Model Number
This product model number typically signifies the following:
V: Represents Vacuum, indicating its arc-quenching medium is a vacuum environment, providing exceptional arc-extinguishing capability.
T: The spring stores energy in advance, releasing it instantaneously during tripping or closing to ensure rapid and reliable operation.
Z: Stands for Circuit Breaker
2. What is a "withdrawable "?
The "withdrawable mechanism" is a key design concept in medium-voltage switchgear. It is not a transport device but rather a mounting method.
Working Principle: The circuit breaker and its components are mounted on a wheeled chassis trolley. This trolley can be "pushed in (operating position)" and "pulled out (test/isolation position)" along the switchgear rails like a drawer.
The significant advantages of the "withdrawable" system:
1)Enhanced Reliability: Primary and secondary plugs automatically connect upon insertion, minimizing human wiring errors.
2) Simplified Maintenance and Replacement: Should a circuit breaker require servicing or replacement, the faulty drawer can be directly withdrawn and a spare drawer inserted, significantly reducing outage duration.
3. Core Functions and Operating Principles
The VTZ-12 drawer's core functions are control and protection.
4.. Primary Application Scenarios
The VTZ-12 drawout switch is widely used in 12kV power systems requiring high reliability and frequent operation, such as:
Power Plants: Plant auxiliary power systems.
Substations: As distribution feeders.
