EP426E EP 24/1250-31.5E

Leveraging on the expertise of a dedicated team of employees, we bring forth the finest quality Indoor Embedded Poles to the clients at the market leading prices. The Indoor Embedded Poles, which we supply and export, are appreciated for their unmatched electrical endurance. Moreover, the Indoor Embedded Poles are preferred due to their excellent mechanical and electrical life.

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	1250A
Rated Short- Circuit Current ( 3 Phase Symmetrical Basis)	31.5kA,r.m.s
Percentage D.C. Component of Rated S.C. Breaking Current	50.00%
Rated Short-Circuit Making Current	80kA,Peak
Rated Duration of Short Time Current	4s
Rated Short-Time Withstand Current	31.5kA,r.m.s
Rated Peak Withstand Current	80kA,r.m.s
*Maximum Contact Resistance at Minimum Closing Force	25Micro 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
Closing Force due to Bellow and Atmospheric	120±50N
Force Required to Hold Contacts open at Full Stroke	160±90N
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	2mm
Closing Speed(average of last 30% contact gap)	0.9±0.2m/Sec
Maximum Contact Bounse Duration(with maximum 2 bounces)	â‰Â¤2ms
Rated Contact Compressive Force	3150±200N
Closing and Opening non-simultaneity of three-phase Contacts	â‰Â¤2ms
Life (Estimated)
Electrical Life at Rated Normal Current	50,000 Operations
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