Tavrida Electric Withdrawable Vacuum Circuit Breakers
Withdrawable VCB Series - Technical Details
|Rated voltage (Ur), up to||≤ 17.5 kV|
|Rated continuous current (Ir)||≤ 1250 A||
≤ 2000 A1
≤ 3150 A2
|≤ 1250 A|
|Rated power frequency withstand voltage (Ud)||38 (42)3 kV|
|Rated lightning impulse withstand voltage (peak) (Up)||95kV|
|Rated short-circuit breaking current (Isc)||≤ 31.54 kA|
|Rated peak withstand current (Ip, close and latch)||≤ 82 kA|
|Rated short-time withstand current, 4s (Ik)||≤ 31.5 kA|
|Mechanical life (CO cycles)||30 000|
|Number of operated-isolated operations||500 cycles|
|Maximum number of CO-cycles per hour||60|
|Operating cycles, rated-short circuit breaking current||50|
|Closing time||≤ 60 ms5|
|Opening time||≤ 35 ms5|
|Break time||≤ 45 ms5|
|Rated operating sequence at rated normal current||O-0.3s-CO-10s-CO-10s-CO8|
|Rated operating sequence at rated short-circuit breaking current||O-0.3s-CO-15s-CO|
|Design class of switching module with regard to severity of service conditions in accordance with IEC 60932||Class 0|
|International testing standards||IEC 62271-100, GB 1984- 2003|
|Resistance of main circuit||≤ 30 μOhm||
≤ 25 μOhm6
≤ 20 μOhm
|≤ 30 μOhm|
|Type of driving mechanism||Monostable magnetic actuator|
143kg 9 . 159kg10
|Number of available auxiliary contacts||6 NO + 6 NC|
2 For PCD 275 mm.
3 The information in brackets refers to the national Chinese standards GB1984-2003 at an installation altitude of 1000 m maximum.
4 FAt 40% d.c. component.
5 Smaller timing on reques.
6 For 2000 A.
7 For 3150 A.
8 The number of sequential Close-Trip operations with a 10 second interval should not exceed 10. The number of Close-Trip operations should not exceed 60 per hour. Sequence of 10s Close-Trip operations can be repeated only after 260 s pause.
9 For PCD 150 mm.
10 For PCD 210 mm.
Tavrida Withdrawable VCB series – Weight and Dimensions
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Tavrida VCB series - Documentation