Snapguide

How to work a hi-pot klystron

KLYSTRON HIGH POTTING PROCEDURE -This procedure is an aid for high potting to clean ceramics of VA862 klystrons that are having problems with excessive arcing.

STEPS
TOOLS
PHOTO SHOWING GROUND CONNECTION BETWEEN MOD TANK AND HI-POTTER

PHOTO SHOWING GROUND CONNECTION BETWEEN MOD TANK AND HI-POTTER

Plug in the High voltage cable into the junction box

Plug in the High voltage cable into the junction box

Connect modulator tank to Hi-Potter

Connect modulator tank to Hi-Potter

Plug in the 208 burndy at the the tank (J1/P1)

Plug in the 208 burndy at the the tank (J1/P1)

Make sure the course and fine controls are both set to zero.

Make sure the course and fine controls are both set to zero.

Turn on the breakers for the high potter

Turn on the breakers for the high potter

Turn HV on. If it won't turn on, try pressing HV off, then HV on

Turn HV on. If it won't turn on, try pressing HV off, then HV on

COARSE CONTROL increase the high voltage to a max of 110 kV while noting the vac ion current and leakage current.

COARSE CONTROL increase the high voltage to a max of 110 kV while noting the vac ion current and leakage current.

CONTROL FRONT PANEL Increase the  high voltage to a max of 110 kV while noting the vac ion current and vac ion current below 1 mA as a guideline. Do not exceed 300 watts of power.

CONTROL FRONT PANEL Increase the high voltage to a max of 110 kV while noting the vac ion current and vac ion current below 1 mA as a guideline. Do not exceed 300 watts of power.

Increase the high voltage to a max of 110kV

Increase the high voltage to a max of 110kV

If the vac ion current is increasing rapidly, turn down the HV

If the vac ion current is increasing rapidly, turn down the HV

Increase the high voltage to a max of 110kV

Increase the high voltage to a max of 110kV

Do not exceed 300 watts of power. (Voltage X leakage current)

Once the 100kV is reached and the arcing stops and the leakage current decreases, then turn down both the course and the fine adjustment. Turn off all three breaks (main, primary, ctrl) on high potter

unplug AC cable for the high potter. remove high voltage cable for the modulator tank at the junction box. remover the 208 Burndy at the tank (J1/P1). It may be necessary to repeat both procedures.

  • Wrenches - 3/4
  • Ground cables
  • Universal Voltronics System