Power Electronics / Power Management


Air-insulated HV power supplies

27 October 2021 Power Electronics / Power Management

XP Glassman’s OQ Series of high-voltage AC/DC power supplies are sophisticated 8 kW or 16 kW open-stack units with extremely low ripple and noise. The air-insulated, fast-response supplies exhibit tight regulation across a range of models available with output voltage ranges from 0-200 kV d.c. up to 0-500 kV d.c. One master supply and up to four slave supplies can be run in parallel, providing a maximum of 25 to 40 kW depending on the maximum DC voltage.

OQ Series power supplies consist of a rack-style driver chassis, a high-voltage stack assembly and a remote control unit. The dimensions of the stack vary with the output voltage rating and are given in the specifications in the datasheet. The driver chassis is provided in a cabinet with 275,8 mm height x 501,7 mm width x 636,5 mm depth. The remote control unit measures 132,5 mm height x 482,6 mm width x 186,3 mm depth.

The units use air as the primary dielectric medium – no oil or encapsulation is used which would impede serviceability or increase weight. Internal circuitry constantly senses and integrates arcs that occur over a given time. In the event that a system or load arcing problem develops and exceeds factory-set parameters, the power supply will cycle off in an attempt to clear the fault and then automatically restart after a preset ‘off dwell time’. The OQ Series’ high-voltage output is inhibited for a short period after each load arc to help extinguish the arc.

Typically, ripple is less than 0,1% peak-to-peak of rated voltage at full load. Off-the-line pulse width modulation (PWM) provides high efficiency and a reduced parts count for improved reliability. The OQ Series’ standard operation mode is constant voltage/current. Automatic crossover from constant-voltage to constant-current regulation provides protection against overloads, arcs and short circuits. A current-trip feature may be substituted for constant-current operation by a remote controlled selector switch on the rear panel of the chassis.

Standard accessories for the OQ Series include 7,6 m of detachable interconnect cables, null modem cable and USB cable.


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

USB charger solution with high power density
Altron Arrow Power Electronics / Power Management
Diodes Incorporated has launched a three-chip solution for enhancing the performance of ultra-high-power-density USB Type-C power delivery (PD) systems. These products can be used in a wide variety of ...

Read more...
Totem pole PFC controller
EBV Electrolink Power Electronics / Power Management
A new addition was made to ON Semiconductor’s solution set for ultra-high density offline power supplies in the form of the NCP1680, a dedicated critical conduction mode totem pole PFC controller. It ...

Read more...
Compact offline switcher ICs
EBV Electrolink Power Electronics / Power Management
Power Integrations introduced LinkSwitch-TNZ, a new switching power supply IC that combines offline power conversion, lossless zero-crossing detection and optionally, X-capacitor discharge functions in ...

Read more...
100 W and 300 W eighth-brick converters
Brabek Power Electronics / Power Management
Recom has introduced two new cost-effective DC/DC products with outputs of 100 W and 300 W in a DOSA-compatible, low-profile, through-hole eighth-brick format (58,4 x 23 mm). The RPA100E-W 100 W part ...

Read more...
High-side current sense amplifier with adjustable gain
NuVision Electronics Power Electronics / Power Management
The MPQ8112A is a low-cost, unipolar, high-side current sense amplifier that operates from a 2,7 V to 60 V supply and typically consumes a 300 μA current. The Monolithic Power Systems part is ideal for ...

Read more...
Super-junction 800 V MOSFETs
Altron Arrow Power Electronics / Power Management
The new super-junction STPOWER MDmesh K6 series from STMicroelectronics enhances several key parameters to minimise system-power losses. It is especially suited to lighting applications based on flyback ...

Read more...
Non-silicone thermal interface material
Vepac Electronics Manufacturing / Production Technology, Hardware & Services
HTC Heat Transfer Compound from Electrolube is a non-silicone thermal interface material recommended where the efficient and reliable thermal coupling of electrical and electronic components is required, ...

Read more...
DC/DC converter for forklift trucks
Vepac Electronics Power Electronics / Power Management
The DC/DC converters of the series PCMDS550-FT from MTM Power are tailor-made to meet the requirements in forklift truck technology. Highest quality and safety are of particular importance when using ...

Read more...
Wide-input buck converters in tiny package
Brabek Power Electronics / Power Management
RECOM now offers through-hole, 1/32nd brick footprint, non-isolated DC/DC converters by way of the RPMA-4.5 and RPMA-8.0, with 4,5&nbs;A and 8 A output ratings respectively. Each part has a wide 9-53 V input ...

Read more...
Integrated buck power module with configurable settings
NuVision Electronics Power Electronics / Power Management
The MP5479 is a complete power management solution that integrates four high-efficiency step-down (buck) DC/DC converters, five low-dropout (LDO) regulators and a flexible I2C interface. Constant-on-time ...

Read more...