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High Voltage ISO Feedthroughs

These high voltage ISO feedthroughs are mounted on KF/LF Flanges that incorporate the industry standard "ISO NW" clamped elastomer sealing principle, making it easy to mount to your existing KF/LF Flange ports.

High Power Feedthroughs

Accu-Glass Products’ High Power hermetic feedthroughs are available in three power ratings up to 20,000 volts and 30 amps.

The maximum standard ratings are:

5kVDC / 30A
10kVDC / 30A
20kVDC / 30A

For custom feedthroughs or for ratings other than the standards, contact the factory. All three versions are offered on Conflat® compatible CF metal seal and  ISO-KF elastomer seal flanges. High purity Alumina ceramic ­insulators provide electrical isolation and copper conductors provide maximum current capacity. The high purity ­Alumina ceramic is bonded and sealed to low ­expansion metals in a vacuum furnace environment using precious and semi-precious high temperature vacuum tube grade braze alloys.

ISO NW Flange Interfaces

Features

  • High Voltage to 20kVDC
  • High Current to 30 Amps
  • High temperature rated to 250°C
  • UHV compatible construction
  • Conflat® and ISO compatible mounts
  • Kapton® insulated vacuum cables
  • PEEK connector with locking screws
  • Air service cables / Boot Connectors
  • Custom solutions on request

Specifications

Electrical 
Voltage 1, Maximum5, 10, 20 kVDC
Current 2, Maximum30 A
Material 
Shell, Stainless Steel304
Pin, ConductorCu, OFE
Ceramic InsulatorAlumina
Connector, AirSilicone
Connector, UHV (Au Plated)BeCu
Vacuum Range 
UHV, Ultrahigh vacuum1x10E-10 Torr
HV, High vacuum1x10E-8 Torr
Temperature Range 2 
Feedthrough250°C
Flange, Conflat®450°C
Flange, ISO150°C
Connector / Cable, Air125°C
Connector / Cable, UHV PEEK250°C
Thermal Gradient, Maximum25°C/minute
Notes 
  1. Electrical ratings are maximum test values, with vacuum side at ≤ 1x10-4 Torr. Feedthroughs are designed for high power applications.
  2. Overall assembly ratings must be adjusted to that of its lowest rated component. For cryogenic service, the lowest recommended temperature is -200°C
  3. Unless designated a 'kit,' connectors and cable assemblies are not included with feedthrough and must be purchased separately.