Features 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 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.” Pulse-Width Modulation. Off-the-line pulse-width modulation provides high efficiency and a reduced parts count for improved reliability. Low Ripple. Ripple is less than 0.1% RMS of rated voltage at full load. Air Insulated. The LQ Series features “air” as the primary dielectric medium. No oil or encapsulation is used to impede serviceability or increase weight. 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 switch allows selection of either current mode. Redundant Thermal Overload Protection. Thermostats and fan RPM sensing shut down the power supply due to over temperature or reduced fan speeds. Tight Regulation. Voltage regulation is better than 0.05% for allowable line variations and 0.05% for allowable load variations. Current regulation is better than 0.5% 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