CERAMIC VACUUM INTERRUPTER FOR CIRCUIT-BREAKER ZMD14-12/1600-31.5
Reference Model：1031TW1
BOTTLES PROFILE
This type of vacuum interrupter is the Cu-Cr50
contact interrupter with cup shaped contacts holder
adopting axial magnetic field intended to install in
the accordant vacuum circuit –breaker or other
vacuum distribution devices. It is recommended for
use in the electric power, mechanical, chemical
and metallurgical department as well as mines
and other industrial department where it is operated
frequently .The small sized interrupter is noted
for compact design, large switching capacity and
high insulating level.
Mechanical Data Required for the Matched Vacuum Switchgear:
Item | Unit | V alue |
Clearance between open contacts | mm | 11±1 |
Average opening speed | m/s | 1.1±0.2 |
Average closing speed | m/s | 0.6±0.2 |
Rated compressive force of contact | N | 2000±200 |
Contact bouncing duration at closing operation | ms | ≤2 |
Out of simultaneity of contact closing and opening | ms | ≤2 |
Bouncing back amplitude of opening contact | mm | 2 |
Specifications of Vacuum Interrupter
Item | Unit | V alue |
Rated voltage★ | kV | 12 |
Rated current★ | A | 1600 |
Rated frequency | Hz | 50/60 |
Short time power frequency voltage (1min)★ | kV | 48 |
Lightning impulse withstand voltage | kV | 75 |
Rated short circuit breaking current★ | kA | 31.5 |
Switching operations of rated short circuit switching current | Operation | 50 |
Rated withstand current (peak) | kA | 50 |
Rated short circuit making current | kA | 50 |
Rated short time withstand current | kA | 20 |
Rated duration of short circuit | s | 4 |
*Rated switching current of single capacitor bank | A | 630 |
*Rated switching current of back to back capacitor bank | A | 400 |
Mechanical endurance | Operation | 20000 |
Clearance between open contacts★ | mm | 11±1 |
Contact closing force due to bellow and atmosphere | N | 140±50 |
Force required to hold contacts open at full stroke | N | 220±50 |
Time-limited circuit resistance at Min. rated compressive force★ | μΩ | ≤15 |
Contact limit erosion | mm | 3 |
Gas pressure inside vacuum interrupter | Pa | ≤1.3×10-3 |
Weight of moving parts | kg | 1.15 |
Weight of vacuum interrupter★ | kg | 4.1 |
Shelf Life | Year | 20 |
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