Current Market Solutions:

• Vacuum circuit breakers are the most common breakers in the medium range voltage.

Disadvantages of the Current Solution:

• The number of disconnections in short circuit conditions is about 60 – short life span for an aggressive interments conditions

• Large size vacuum chamber and contacts are to be used to hold the arc made by the short circuits

• when currents rates has to be upgraded the whole enclosure must be replaced

 

BZMT Electronics Solution:

 

Synchronic vacuum circuit breakers the

• The number of disconnections in short circuit conditions increase to about 10 times more (from about 60 to 500)

• The nominal current of the device can be increased by 1.5 to 2. (validation)

Synchronic vacuum circuit breakers the technology

• Time to open the switch in the vacuum chamber less than 2.5 [MS]

•  Max time for arc to exist - 2.5 [MS] in short circuit

• The control starts  opening of the switch- when receiving an order – only when current cycle is 2.5 MS from the zero point, so the arcing that is created is minimized

• The force- pressure to pull the contacts in the vacuum chamber is increased from a standard force of about 1200 N to about 2500 N

vacuum circuit breakers solution architecture

• The design of the control unit and the driving mechanism will fit every medium voltage circuit breaker. The size of it is the same or smaller than the existing control unit and driving mechanism

• The price of manufacturing the control unit and driving mechanism is smaller or equal to the existing standard control and mechanism.

 

Development Status:

• Bazmatech Ltd. is developing a universal demonstration  unit . The controls have been tested and proved to work. The “engine” operating device is being built.

 

 

Development objective:

• Bazmatech Ltd. wants' to cooperate with circuit breaker manufacturer to adopt the technology to the manufacturer devices and to sell the technology.