Saelig offers 1,500-W single-channel programmable DC supplies

Aug. 16, 2017

3 min read

Fairport, NY. Saelig Company Inc. announced it is offering the PSU-HV Series of single-output programmable switching DC power supplies that can provide up to 15 A of current and cover a power range up to 1,560 W. These high-efficiency, high-power-density 1U-height supplies include five models from 100-V to 600-V output. More than one unit can be combined for increased power capacity. Made by GW Instek, the PSU-HV Series has five models (100 V/15 A, 150 V/10 A, 300 V/5 A, 400 V/3.8 A, and 600 V/2.6 A) to satisfy many high-voltage application demands.

The PSU-HV Series of 19″ rackmount (1U) single channel power supplies provide constant voltage/constant current selection—a useful safety feature for protecting a device under test (DUT). The power supplies normally operate in constant voltage (CV) mode when turned on, but, if connected to a capacitive load, this could cause a high inrush current or current-intensive load at the power output stage. Running in constant-current mode limits current spikes, protecting the DUT from inrush current damage. The overvoltage protection (OVP) and overcurrent protection (OCP) levels can be selected from 10% to 110%, with the default level set at 110% of the power supply’s rated voltage/current.

The adjustable slew rate of the PSU-HV Series allows users to set either output voltage or output current with a specific rise time for low to high level transition, and a specific fall time for high to low level transition. This is useful for characterizing a device under test during voltage or current level changes using variable slew rates. The output on/off delay feature enables setting a specific time delay for output on after the power supply output is turned on, and a specific time delay for output off. When multiple PSU-HV units are used, the on/off delay time of each unit can be set respectively at preset time points. This multiple-output control can be done through the analog control terminal at the rear panel or through the PC programming with standard commands. The PSU-HV series also provides users with flexible settings of high/low level or trigger input /trigger output signals with pulse width of 1 to 60 ms. The trigger input controls the PSU to output a preset voltage, current, or memory parameters.

The PSU-HV Series comes with USB host, USB device, LAN, RS-232 with RS-485, and isolated analog control interfaces as standard. A LabVIEW driver is also available for rear-panel external control of power on/off and external monitoring of the power output voltage and current.

Made by the Taiwanese test and measurement specialists GW Instek, the PSU-HV Series power supplies are available now from Saelig Company Inc.