Introducing the TD-12/1250-31.5 Vacuum Arc Extinguishing Chamber - the ideal solution for protecting your equipment and ensuring efficient circuit interruption. With a maximum short-circuit current breaking capacity of 40kA, this vacuum chamber guarantees the safety of your line's devices, preventing any potential damage. Not only does it effectively interrupt and extinguish arcs, but it also prioritizes safety and environmental friendliness. The TD-12/1250-31.5 requires zero maintenance, providing you with a hassle-free experience. Invest in this professional-grade vacuum arc extinguishing chamber and safeguard your equipment while promoting a secure and eco-conscious working environment.
Size: Φ80 mm*207 mm
Rated Frequency: 50 Hz
Rated Voltage: 12 kV
Rated Current: 1250 A
Rated Short-circuit Breaking Current: 31.5 kA
Lighting Impulse Withstand Voltage (Peak): 85 kV
MAIN TECHNICAL DATA | TYPE | |||||
| TD-12/1250-31.5W | ||||||
| VOLTAGE RATINGS AT RATED CONTACT STROKE | ||||||
Rated Frequency | HZ | 50 | ||||
Rated Voltage | kV | 12 | ||||
Short-time(1min)Power-frequency Withstand Voltage | kV | 30/48* | ||||
Lighting Impulse Withstand Voltage(Peak) | kV | 85* | ||||
| CURRENT RATINGS | ||||||
Rated Current | A | 1250 | ||||
Rated Short-circuit Breaking Current | kA | 31.5 | ||||
Rated Short-time Withstand Current | kA | 31.5 | ||||
Rated Peak Withstand Current | kA | 80 | ||||
Rated Short-circuit Making Current | kA | 80 | ||||
Rated Single Capacitor Bank Breaking Current | A | 630★ | ||||
Rated Back-to-back Capacitor Bank Breaking Current | A | 400★ | ||||
Rated Duration of Short-circuit | s | 4 | ||||
Circuit Resistance at Min. Rated Contact Force | μΩ | ≤ 15 | ||||
| MECHANICAL DATA | ||||||
Contact Close Force Due to Bellows and Atmosphere | N | 90 ± 40 | ||||
Counter Force of Contact at Full Stroke | N | 180 ± 40 | ||||
Mass OF Moving Parts | kg | 1.0 | ||||
| LIFE | ||||||
Mechanical Endurance | Times | 10000 | ||||
Contact Limit Erosion | mm | 3 | ||||
Switching Operations of Rated Short-circuit Breaking Current | Times | 30 | ||||
Shelf Life | Years | 20 | ||||
Internal Gas Pressure | Pa | ＜1.33 × 10-3 | ||||
RATED OPERATING SEQUENCE | O-0.3s-CO-180s-CO | |||||
MECHANICAL DATA OF VACUUM SWITCH EQUIPPED WITH THE INTERRUPTERS | ||||||
Average Opening Speed(first 6mm） | m/s | 1.1 ± 0.2 | ||||
Average Closing Speed(last 6mm) | m/s | 0.6 ± 0.2 | ||||
Contact Bounce Duration at Closing Operation | ms | ≤ 2 | ||||
Clearance Between Open Contacts | mm | 9 ± 1 | ||||
Out of Simultaneity of Contact Closing and Opening | ms | ≤ 1 | ||||
Rated Contact Pressure | N | 3000+3000 | ||||
Added External Contact Force at Contact Touch Point | N | 2100+2000 | ||||
Maximum Rebound During Opening | mm | ≤ 2 | ||||
Note 1:Meets or exceeds the electrical endurance requirements of calss E2 per IEC 62271-100 and GB 1984-2014. Note 2:"*"Rated insulation values require external insulation, such as SF6,transformer oil or solid dielectric material etc. Note 3:"★"Rated characteristics to be given on request. Note 4:The movable stem of the VI could only suffering no more than 45Nm twisting force and in order not to damage the metal bellows, the movable stem should be prevented from rotation when assembling. For more requirements please check the instructions of Usage. | ||||||
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