Vacuum Circuit Breaker (VCB)Ecotank Type Vacuum Circuit Breaker (Dry Air Insulation)
This is an environmentally-friendly vacuum circuit breaker (VCB). Considering the climate change, we made VCB with totally SF6 gas-free and resource and energy saving features.
Dead Tank Type VCB optimized for green procurement. It uses dry air for insulation in place of the SF6 which is specified as a greenhouse gas. Our basic design concept is to realize the environmental factors in design (The 3Rs (Reduce, Reuse, and Recycle) + LS (Longuse & Separable)) and life-cycle cost (LCC) reduction as basic concepts.
- [Reduce] No use of SF6 gas (a greenhouse gas), reduction of eddy current loss by adopting an aluminum tank, reduction of mass by using aluminum materials, and compact design.
- [Reuse / Recycle] Reuse of non-rusting and non-corrosive components (reuse of the aluminum and copper materials)
- [Long Use] Longer operational life by adopting the VCB
Long operational life without requiring the repair paint work as it uses the aluminum materials
- [Separable] Ease of decomposition and collection (no need to collect SF6 gas by collection equipment , no need for SF6 gas reprocessing)
Applications and Solutions
- 36/72/84 kV VCB (for Japan Market ) - compliant with the JEC-2300 Standard (for AC circuit breakers).
- 36/72.5 kV (for overseas markets ) - compliant with IEC 62271-100-2008 and ANSI C37.06-2009.
|Rated voltage (kV)||72||84|
|Rated lightning impulse withstand voltage (kV)||350||400|
|Rated current (A)||1200||2000||1200||2000|
|Rated frequency (Hz)||50/60|
|Rated short circuit breaker current (kA)||31.5※|
|Rated transient recovery voltage (kV/µs)||0.75|
|Rated contact opening time (s)||0.03|
|Rated interrupting time (starting time to ending time)||3|
|Standard operatino duty||A (O - 1 min - CO - 3 min - CO), B (CO - 15 sec - CO), R (O - 0.35 sec - CO - 1 min - CO)|
|Contact closing time (s)||0.13|
|Rated closing operation voltage (V)||DC 100/110|
|Rated control voltage (V)||DC 100/110|
|Rated air pressure (MPa-g)||0.5 (dry air) (20°C)|
|Operation system||Electric energy storing for energizing spring, spring injection, and spring interruption|
- * We can provide 40 kA model.
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