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Load break switches
ELECTRICAL DATA
ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS | |
1.Rated Voltage | 12KV |
2.Rated Current | 630/1250A |
3.Rated Frequency | 50Hz |
4.Rated Short-time Power Frequency Withstand Voltage(1min) | 42KV |
5.Rated lightring Impulse Withstand Voltage | 75KV |
6. Rated short-circuit breaking current | 25KA |
7. Rated short-circuit making current(peak) | 63KA |
8.Rated operations of short-circuit breaking current interruption | 30times |
9.Rated single capacitor bank breaking current interruption | 630A |
10.Rated Short-time Withstand current | 25KA |
11.Rated peak withstand current | 63KA |
12. Rated Duration of Short-circuit | 4s |
13. Mechanical Life | 20000times |
14.Contact closing force due to bellows and atmosphere | 120+50N |
15.Counterforce at rated contact stroke | 190+60N |
16. Circuit Resistance at Rated Contact Force Atmosphere Force | 20Micro ohms |
17. Shelf Life | 20Years |
18. Contact Erosion Limit | 3mm |
19.Weight of moving parts | 1.5kg |
MECHANICAL REQUIREMENTS(REF. VCB) | |
1. Rated Contact Stroke | 10+1mm |
2.Opening Speed(average) | 1.0+0.25m/Sec |
3.Closing Speed(average) | 0.65+0.15m/Sec |
4.Added contact force | 2000+100N |
5. Maximum Contact Bounse Duration at closing operation | 2ms |
6. Contact Bouncing Bank Amplitude of Opeing Operation | 2mm |
7.Three-pole simultaneity | 1ms |