FURMAN AR-2330D 30 Amp AC Line Voltage Regulator
The 30 amp AR-2330D AC Line Voltage Regulator is primarily intended to protect projection, video, and computer equipment from problems caused by AC line voltage irregularities-sags, brownouts, or overvoltages that can cause sensitive equipment to malfunction, or, in extreme cases, to sustain damage.
The AR-2330D is designed for use in areas with AC mains of 208-240V. It converts input voltages of 190V to 287V to 240 VAC ±10V. Output voltage can be changed from 240V to either 220V or 230V via an internal jumper. The AR-2330D can handle loads totaling up to 30 amps as long as the input voltage is above the selected output voltage. For voltages below that level, its capacity must be derated at approximately .15 amperes per volt.
The AR-2330D has been designed specifically with the unique needs of video and audio in mind, and projection systems in particular. Its technology differs from that of computer-oriented voltage regulators in many important ways. For example: The AR-2330D does not use a ferro-resonant transformer, which would be heavy and bulky, radiate a large magnetic field, and be too frequency-sensitive to be usable with generators. Instead, it uses a use a design based on an eight-tap toroidal autoformer. The toroidal design assures minimal stray magnetic fields.
The AR-2330D circuitry monitors the incoming line voltage with each cycle, comparing it to an extremely precise voltage reference. If a voltage fluctuation requires that a different tap be selected, the new tap is electronically switched exactly at the zero-crossing, to avoid distorting the AC voltage waveform. (Some commercial voltage regulators using multiple-tapped transformers switch taps at uncontrolled times, thereby creating voltage spikes, and often creating disturbances in attached equipment.) The design is not sensitive to small errors in line frequency, making the AR-2330D ideal for use with generators.
The AR-2330D also features a precise, high-inrush magnetic circuit breaker, and comprehensive power conditioning which includes MOV's and high voltage inductors and capacitors. This unique combination safely diverts large spikes as well as filters EMI/RFI noise.
An additional feature, Extreme Voltage Shutdown, senses dangerously high or low voltages and shuts down the output before any damage is done. The output remains off until the overvoltage or undervoltage is removed, with an LED indicating the shutdown condition. This invaluable feature provides positive protection to your equipment from accidental connection to incorrect line voltages-a not uncommon hazard in the entertainment industries.
The AR-2330D has one 30A NEMA L14-30P twistlock inlet, and one 30A NEMA L14-30R twistlock outlet on the rear panel. There are no controls except the circuit breaker/on-off switch. A bargraph meter comprised of 10 LED's indicates input voltage, while another LED indicates "In Regulation" status (i.e., that the output voltage is within ±10V of the selected value.) Also provided is a 10-LED bar graph meter to indicate true RMS output current. The unit is housed in a compact, two-space rackmount chassis, 3.5" high and 17" deep (8.9 x 43.2 cm) and weighs only 49 lbs. (22 kg).
Delivers a stable 240 ±10 VAC whenever the input AC line voltage is between 190V and 287V
Output voltage can be changed to 220V or 230V with internal jumper
Output capacity 30 amps
One twist lock inlet and one regulated, conditioned twistlock outlet on rear
Eight-tap toroidal autoformer
10-LED bargraph Input Voltage meter
10-LED bargraph true RMS reading Output Current meter
Extreme overvoltage/undervoltage causes instant shutdown, protecting equipment
Extreme Voltage Shutdown indicator LED
Output In Regulation indicator
Low stray magnetic field
Quiet, variable speed rear panel fan provides cooling for heavy-duty, continuous operation