OQ Open Stack Series 8 kW Regulated High Voltage DC Power Supplies

200 kV to 500 kV CE Compliant

Parallelable up to 40 kW

Fully RoHS Compliant

The OQ open stack family are sophisticated 8 kW power supplies with extremely low ripple and noise. They are air insulated fast response units with tight regulation Please refer to Technology > Applications page on our web site for typical applications.

The OQ Series are fully compliant with the following European Directives:

  • EN61010/ IEC61010, Safety
  • EN61000-6-4, Conducted and Radiated Emissions
  • EN61000-6-2:2005, Conducted and Radiated Immunity
  • 2011/65/EU, Restriction of the use of Hazardous Substances (RoHS)

OQ open stack series models consist of a rack style driver chassis, a high voltage stack assembly, and a remote control unit. The driver chassis is provided in a cabinet which is 10.86” H X 19.75” W X 25.06” D. The remote control unit is 5.218” H X 19.00” W X 6.625” D.



Arc Quench. The HV output is inhibited for a short period after each load arc to help extinguish the arc.

Arc Count. Internal circuitry constantly senses and integrates arcs that occur over a given time. In the event that a load arcing problem develops, the power supply will cycle off, then automatically restart.

Embedded Microcontroller Control. Integral RS-232, USB and optional Ethernet communications provide remote control program and monitor.

Air Insulated. The OQ Series features “air” as the primary dielectric medium. No oil or encapsulation is used to impede serviceability, or increase weight.

Input Voltage. 208 VAC standard. 380, 415 & 480 VAC optional

Low Ripple. Typically, ripple is less than 0.1% peak to peak of rated voltage at full load.

Parallelable. One master supply and up to 4 slave supplies provide a maximum of 25 – 40 kW depending on kV.

Pulse-Width Modulation. Off-the-line pulse-width modulation provides high efficiency and a reduced parts count for improved reliability.

Constant Voltage/Constant Current Operation. Automatic crossover from constant-voltage to constant-current regulation provides protection against overloads, arcs, and short circuits.

Constant Current/Current Trip. A rear panel selector switch on the remote chassis allows selection of either current mode.

Tight Regulation. Voltage regulation is better than 0.005% for allowable line and load variations. Current regulation is better than 0.1% from short circuit to rated voltage.

Warranty. Standard power supplies are warranted for three years; OEM and modified power supplies are warranted for one year. A formal warranty statement is available.



124 West Main Street, PO Box 317, High Bridge, NJ 08829-0317

(908) 638-3800 • Fax (908) 638-3700 • www.glassmanhv.com

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