VBI-24 Side Mounted Vacuum Circuit Breaker With 3 Current Transformers

VBI-24 Side Mounted Vacuum Circuit Breaker With 3 Current Transformers

• Specification
• Technical parameters

• VBI-24 Side Mounted Vacuum Circuit Breaker With 3 Current Transformers

  VBI-24 indoor medium-voltage sealed vacuum circuit breaker is suitable for air-insulated indoor switches and is used for control and protection in power grids with AC and rated voltage of 24KV and below. Vacuum circuit breakers are used in frequent It has extremely excellent performance in operation and situations where the circuit breaker current needs to be opened, fully meets the requirements of automatic closing, and has high reliable operation and service life.

  The operation mechanism of VBI-24 side mounted type vacuum circuit beaker is used spring to storage energy, which can be operated by two ways, manual or electrical. The characteristics are accordance with GB1984-89 <AC High Voltage Circuit Breaker>, JB3855-96<10kv Indoor High Voltage Vacuum Circuit Breaker General Technical Specifications>, Relevant Provisions of IEC56 standard.

  Advantages of installing current transformers on side-mounted circuit breakers
  1. Integrated design: Installing the current transformer directly on the circuit breaker makes installation and wiring easier, reducing additional installation space and costs.
  2. Instant response: Directly monitoring the current near the circuit breaker can respond to fault conditions more quickly, improving the protection speed and accuracy of the system.
  3. Reduced interference: Reduced interference and attenuation in the signal transmission path, improving the accuracy of the measurement.

• Main Technical Specification

  No.	Name		Unit	Data
  *	Type		/	口Insulating cylinder 口Epoxy resin embedded poles 口Nylon embedded poles		口Upper outlet 口Side outlet
  1	Rated voltage		kv	24
  2	Rated insulation level	Power frequency withstand voltage		65
  		Rated lightning impulse withstand voltage		125
  3	Contact opening distance		mm	12±1
  4	overtravel			3±0.5
  5	Distance between phases			210±1
  6	Contact closing bounce time		ms	≤2
  7	Three-phase points,closing at different times			≤2
  8	Opening time			≤50
  9	Closing time			≤100
  10	Average opening speed(contact is separation after 6mm)		M/s	0.9~1.3
  11	Average opening speed(contact is closed before 6mm)			0.4~0.8
  12	Closing contact contact pressure		N	25KA	31.5KA
  				2200±200	3200±200

   

  External Dimensions

  

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