High Current and Voltage Disconnectors SWHA

• 3000 VAC 50/60 Hz - 6 000A on each
• Aluminium Terminal
• Low and constant voltage drop
• Supported by busbars (no frame required)
• Large customization possible with:Actuators (motor, pneumatic, manual)
• Auxiliaries (limit switches, locks, control boxes)
• Adaptation to the connectiong busbars.
• According to IEC 60947-3 / IEC 60077-1

High Current and Voltage Disconnectors SWHA Electrical Data

• Temperature rise at nominal current (with 40°c max. Ambient temperature) less than ⇒ 50°c
• Voltage drop at nominal current less than ⇒ 50 mV
• Peak short-circuit current withstand (upon circuit configuration) ⇒ 8 x (nominal current)
• Dielectric withstand strength
  • Between live parts in open position ⇒ 10 kV - 50 Hz - 1 mn
  • Between live parts and earth ⇒ 10 kV - 50 Hz - 1 mn
  • Between auxiliary contacts and earth ⇒ 2.5 kV - 50 Hz - 1 mn
  • Between motor (AC) and earth ⇒ 2 kV - 50 Hz - 1 mn

 

High Current and Voltage Disconnectors SWHA Mechanical Data

 

• Mechanical endurance (with respect to maintenance instructions) higher endurance upon ⇒ 100 000 cycles
• Typical duration of opening or dosing operation ⇒ Less than 20 seconds
  • with motor operation ⇒ Less than 1 second
  • with pneumatic operation ⇒ 300°c
• Ponctual contact temperature on live parts withstand without equipment damages

High Current and Voltage Disconnectors SWHA Technology

• Copper terminals or mixt optionnal
• All contacts are fitted with solid silver, high temperature brazed (special process)
• Mechanically independant mobile contact arms with with high-pressure springs
• Electrical contact with solid pure silver, point to point, contact tips.
• Operation mechanism by a toggle closed system
• Upon request, two poles or change-over design by side association of two disconnectors