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TD411B VITD 24/630-12.5B


TD411B VITD 24/630-12.5B

We bring forth the best quality Vacuum Interrupter For Reclosers to the valued clients. Being sourced from the credible vendors of the markets, Vacuum Interrupter For Reclosers are assured of their fabrication using the superior quality materials. High electrical endurance, high shelf life and high mechanical life are some of the commendable attributes of Vacuum Interrupter For Reclosers, which we offer.

Electrical Ratings (3Phase) Symmetrical Basis
Rated Frequency 50/60Hz
Rated Maximum Line to Line Voltage 24kV,r.m.s
Rated Power Frequency Withstand Voltage : Air 79kV,r.m.s
Rated Impulse Withstand Voltage : Air 125kV,Peak
Rated Normal Current 560A
Rated Short- Circuit Current ( 3 Phase Symmetrical Basis) 12.5kA,r.m.s
Percentage D.C. Component of Rated S.C. Breaking Current 50.00%
Rated Short-Circuit Making Current 31.25kA,Peak
Rated Duration of Short Time Current 4s
Rated Short-Time Withstand Current 12.5kA,r.m.s
Rated Peak Withstand Current 31.25kA,r.m.s
*Maximum Contact Resistance at Minimum Closing Force 18Micro ohms
*Rated Breaking Current of Single Capacitor Bank 630A,r.m.s
*Rated Breaking Current of Back-to-Back Capacitor Bank 400A,r.m.s
Rated operating sequence o-0.3s-co-180s-co
Mechanical Data
Interrupter Weight (Approx.) 2.96kg
Moving Part Weight (Approx.) 1.1kg
Closing Force due to Bellow and Atmospheric 120±50N
Force Required to Hold Contacts open at Full Stroke
Mechanical Requirements (Ref. Vcb)
Contact Stroke 13±1 mm
Opening Speed (average of 75 contact gap) 1.5±0.2m/Sec
Maximum Overtravel During Opening 2mm
Maximun Rebound During Opening
Closing Speed (average of last 30% contact gap) 0.9±0.2m/Sec
Maximum Contact Bounse Duration (with maximum 2 bounces) â¤2ms
Rated Contact Compressive Force 2000±200N
Closing and Opening non-simultaneity of three-phase Contacts â¤2ms
Life (Estimated)
Electrical Life at Rated Normal Current 50,00 0Operations
Electrical Life at Rated Short Circuit Current 100 Operations
Mechanical Life 50,000 Operations
Contact Erosion Limit 3mm
Shelf Life 20Years

Note
  • Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-200 and JB 8738-2008.
  • * Rated Characteristics to be given on request"

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