Iec 60038 Standard Voltages Pdf 103
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The APD-D series Automatic Pressurization Dehydrator is designed for reliable pressurization of elliptical waveguide, coaxial cable and rigid transmission line systems. Dry pressurized air in the distribution system ensures that condensation is avoided and optimal system performance is achieved.The dehydrator includes a self-contained completely automated air drying system that utilizes a pressure swing moisture adsorption cycle to provide pressurized dry air while continuously purging the collected moisture to the atmosphere. This eliminates the need for replacement or manual reactivation of the desiccant and makes our APD-D series dehydrators ideal for unattended operation, even at remote sites.The dehydration system is completely automatic, with no need for periodic media replacement or reactivation. These units are capable of years of trouble-free service when properly installed, operated and maintained.An internal check valve guarantees that the customer system stays isolated from the dehydrator's internal system when the dehydrator is not actively operating. A USB port offers the ability to enable options, update configurations and download operating data in the field for easy upgrade, maintenance and troubleshooting.The alarm port consists of electrically isolated 1 Form C relay contacts that can be used for both local and/or remote monitoring/alarming. Additional standard features include a 0-103 kPa (0-15 psig) pressure gauge and indicating LED lights.The units may be shelf mounted or placed in a 19"" EIA relay rack. A Wall/Rack mount is available as an optional accessory.
1) All specifiactions at 23°C (73°F) and 50% relative humidity at mean sea level (MSL) unless otherwise noted.2) For indoor use only. IEC 60721-3-3 Class 3k3 (temperature-controlled locations, humidity not controlled)absolute Humidity AH 25 g/m³ (0.00156 lb/ft³) @ 29.4°C (85°F) => 85 % relative humidity RHabsolute Humidity AH 25 g/m³ (0.00156 lb/ft³) @ 40°C (104°F) => 48.8 % relative humidity RH3) Tubing used must be polyurethane (durometer 95A), polyethylene (durometer 440), or nylon (durometer 500)4) Voltage source per IEC 60038 (1/N/PE)*** Not for use with North American 240VAC service ***5) Electrical supply circuit must retain within operating voltage specifications at all times.6) Lower Operating Pressure set to 3.4 kPa (0.5 psig). Low Pressure alarm set to 1.7 kPa (0.25 psig)
Abstract:This paper deals with voltage unbalances and how they can be quantified according to the standards. Firstly, a comparison between the different unbalance voltage factors is conducted in order to remark on their divergences. Secondly, according to the standard that better represents the phenomenon, i.e., EN 50160, a new methodology is proposed to quantify the voltage unbalance factor (VUF). In order to do so, it is recommended to measure the voltage unbalance in three-phase installations by means of a new smart sensor based on a single voltage sensor, which measures the direct-current (DC) voltage at the output of a three-phase diode bridge rectifier, while current methods make use of three voltage sensors (which can measure either phase-to-neutral voltages or phase-to-phase voltages). Furthermore, both simulation and experimental results have been carried out to validate the proposed methodology. Finally, a new voltage unbalance factor (and the corresponding methodology to obtain it from the measured DC voltage) is proposed.Keywords: smart sensor; voltage sensor; voltage unbalance; voltage measurement; power quality 2b1af7f3a8