OEM Manufacturer 11kv 630a Vacuum Circuit Breaker - VBI-12 single spring operating mechanism – Ghorit

The VBI-12 single spring operating mechanism is an integrated product specially designed for three-phase AC 50Hz, rated voltage 12KV indoor high-voltage vacuum circuit breaker operation. It is a modular functional unit design with a compact and simple structure. Reliable and easy to operate. The optimized closing function unit design reduces the closing power, which not only fundamentally solves the occurrence of failures such as failure to maintain and refuse to open after closing, but also reduces the trip power required for opening; motor energy storage unit It adopts gear transmission and compact structure, which reduces mechanical failures due to quality problems such as chains. Thereby, it is greatly improved that the disconnected motor energy storage unit adopts gear transmission, has a compact structure, and reduces mechanical failures caused by quality problems such as chains. Thereby greatly improving the mechanical life of the circuit breaker spring mechanism (30,000 times). The surface of 80% of the parts in the mechanism is treated with a special process, which greatly improves the anti-corrosion ability of the parts and ensures the consistent and stable quality of the machinery.

Environmental Conditions

1.Ambient temperature: -15℃~+40 ℃  (at -30 ℃ to allow storage and transportation).
2. Altitude: ≤1000m.
3. Relative humidity: daily average ≤95%, monthly average ≤90%. saturated vapor pressure daily average≤2.2kPa, monthly average ≤1.8 kPa.
4. Earthquake intensity: ≤8 degree.
5. No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration.

1. Operating mechanism of circuit breaker with permanent magnet single phase DC motor storage energy, storage energy with follow technical data sheet:

* Operating voltage adopt AC/DC power. ( ) with 40kA parameter.

2. Technical data for operating mechanism coil and release