Meidensha SF6 Gas Insulation Tank Type Vacuum Circuit Breaker

Manufacturer: Meidensha Corporation
Model: SF6 Gas Insulation

Features

Superior Breaking Performance: Uses a vacuum interrupter (VI) to eliminate gas decomposition during interruption.
Compact Footprint: Integrates a built-in bushing current transformer (BCT) directly into the tank to save space.
Zero Internal Inspections: Eliminates the need to open the breaking part for maintenance, heavily cutting labor costs.
40% LCC Reduction: Delivers an approximate 40% lifecycle cost (LCC) reduction compared to conventional Gas Circuit Breakers (GCBs).
Eco-Friendly Design: Slashes required $\text{SF}_6$ gas volume by roughly 1/3 compared to a standard GCB.
Seismic Resilience: Engineered with a low center of gravity for excellent anti-seismic performance.

Applications and Solutions

120/168/204 kV JEC-2300 Standard-compliant

Specifications

TypeVBO-100532BVBO-100732BVBO-140532BVBO-140740BVBO-170532BVBO-170740B
Rated voltage (kV)120168204
Rated current (A)120020001200200012002000
Rated breaking current (kA)31.531.54031.540
Rated opening time (s)0.06 (5 cycles)0.037
Rated interrupting time (cycles)5/33
Operating dutyA (O – 1 min – CO – 3 min – CO),
B (CO – 15 sec – CO),
R (O – 0.35 sec – CO – 1 min – CO)
Closing time (s)0.13
Rated closure operating voltage (V)DC100
Rated motor voltage (V)DC100
Insulation mediumSF6 gas
Rated gas pressure (MPa-g)0.15 (20°C)
Operation systemMotor-charged spring
Applicable standardsJEC-2300 (1998)

BCT application

Secondary current (A)5
100402515
2010201020102010
Primary current (A)1P3P1P3P1P3P1P3P1P3P1P3P1P3P1P3P
2000
1600
1200
1000
800
600
400
300XXSpecialSpecial
200XXXX
150XXXXXXXXXXXXXXXX
* Please make an Internet inquiry for the 204/168 kV model specifications.

 

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