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Frequently Asked Questions about HVP Power Supplies
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Question: What are power ratings of the HVP series?

 Answer: The HVP series power supplies are 250W supplies. They are available as either a positive or negative output as follows:

  • 50kV 5mA
  • 80kV 3mA
  • 125kV 2mA


Question: What kind of protection systems does the HVP have?
Answer: There are three main protection systems -
  • Over-voltage
  • Over-current
  • Arc/short-circuit
Over-voltage System: This circuit limits the voltage output of the high voltage transformer to approximately 110% of the rated output.

Over-current System: This circuit limits the output current of the high voltage transformer using a current sense transformer output compared to a preset reference.

Arc/short-circuit System: This protection encompasses a variety of circuits and components working together to protect the internal components from transient effects of an arc as well as to clamp the output current to the current regulation set value in the event of a short circuit condition.

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Question: What are the cable & connector ratings of the cable provided with the HVP?

Answer: The high voltage cable is an option that is purchased separately. The optional cable is rated to 150kV maximum voltage. The connector is a standard Amphenol series 97 circular connector without the pin plug. The connector is used as a shield ground path to the supply frame for the high voltage cable.

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Question: Can high voltage transients interfere with data or signal lines through the voltage or current monitor signals?

Answer: The signal lines include interface filtering and suppression components designed to protect the signal integrity and internal components. If an arc occurs during operation, transients can be coupled into the signal lines. Using good grounding techniques as well as shielding the interface cable will normally be sufficient to reduce coupled transients to non-disruptive levels.

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Last Revision: 21 May 2014