California Instruments CSW5550 Programmable AC/DC Power Source, 5550VA

MIL-STD-704 defines the requirements outlined by the Department of Defense for the characteristics of aircraft electric power generated at the input terminals of electric utilization equipment. MIL-STD-704 is intended to detail electric power quality requirements for DoD aircraft, but may also be used with commercial planes or other vehicle types. Standards like ISO 1540 and SAE-AS1212 also dictate aircraft electric power requirements, but are not generally relevant for military aircraft, as they do not address the areas of concern for military aircraft electric power quality and need wider limits compared to MIL-STD-704. MIL-STD-704 also takes into account legacy DoD equipment and aircraft electrical systems.   General Requirements 4.1 Aircraft Electric Power System Requirements   Aircraft electrical power systems should offer electric power with the characteristics specified in this standard at the utilization equipment terminals during all powerations of the power system. Airframe manufacturers or modifiers are responsible for offering the distribution and protection network to the terminals of the utilization equipment while maintaining power characteristics specified in MIL-STD-704; characteristics of the power measured at the output terminal of an unregulated power source or the POR of a regulated power source should be within the limits specified in the detail specification applicable to the power source. Protective devices should operate independently of control/regulation equipment. 4.2 Aircraft Utilization Equipment Requirements   Utilization equipment should be compatible with the power characteristics specified in MIL-STD-704. Aircraft should operate at the performance level specified in its detail specification in all of the following modes of operation: Normal Abnormal Transfer Emergency Starting Loss of power or the loss of one or more phases of AC should not result in

IEC 61000-4-13 defines the immunity test methods and range of recommended basic test levels for electrical and electronic equipment with rated current up to 16 A per phase at disturbance frequencies up to and including 2 kHz (for 50 Hz mains) and 2,4 kHz (for 60 Hz mains) for harmonics and interharmonics on low voltage power networks. Establishes a common reference for evaluating the functional immunity of electrical and electronic equipment when subjected to harmonics and inter-harmonics and mains signaling frequencies. The test method documented in IEC 61000-4-13 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon.   The basic immunity test for harmonic and interharmonic distortion of 50Hz or 60Hz mains supplies is IEC 61000-4-13, which has been adopted unchanged as the harmonized European standard EN 61000-4-13. The ideal mains voltage is a pure sine wave at the fundamental frequency (usually either 16.67, 50, 60 or 400 Hz), but non-linear leads and injection of signaling voltages cause the waveform to be distorted. The techniques of Fourier analysis are used to describe the distortion in terms of one or more frequencies superimposed on the pure sine wave fundamental. These added frequencies are classified as harmonic -when they are an integer multiple of the fundamental, and as interharmonic - when they are any other frequency. What are harmonics and interharmonics? Harmonics are split into two main types: odd-numbered (3, 5, 7, 9, ...39, etc) and even-numbered (2, 4, 6, 8, ...40, etc), because they can cause different problems and as a result may need to be treated differently. Odd-numbered harmonics are often called odd-order harmonics, and the same for even-numbered harmonics. They are further divided into those that are a multiple of 3 times the fundamental because, in three-phase power systems, triplens can be canceled out whereas other odd-order harmonics cannot be. When

IEC 61000-4-17 applies to low-voltage d.c. power ports of equipment supplied by external rectifier systems, or batteries that are being charged. The object of this standard is to establish a common and reproducible basis for testing, in a laboratory, electrical and electronic equipment when subjected to ripple voltages such as those generated by rectifier systems and/or auxiliary service battery chargers overlaying on d.c. power supply sources.    IEC 61000-4-17 defines  test voltage waveform range of test levels test generator  test set-up  test procedure.   The test described by IEC 61000-4-17 hereafter applies to electrical or electronic equipment and systems. It also applies to modules or subsystems whenever the equipment under test (EUT) rated power is greater than the test generator capacity specified in clause 6. This test does not apply to equipment connected to battery charger systems incorporating switch-mode converters.   The preferred range of test levels, applicable to the d.c. power supply port of the equipment, are given in table 1.   Level Percentage of the nominal d.c. voltage 1 2 2 5 3 10 4 15 X (open level) x   The test levels are a peak-to-peak voltage expressed as a percentage of the nominal d.c. voltage Ud.c.    The amplitude of the ripple voltage is represented in figure 1 by the difference Umax – Umin.   The frequency of the ripple is the power frequency or its multiple 2, 3 or 6, as specified by a product committee or according to the EUT manufacturer’s specifications or according to the characteristics of the rectifier system (see also clause

IEC 61000-4-34 defines the immunity test methods and range of preferred test levels for electrical and electronic equipment connected to low-voltage power supply networks for voltage dips, short interruptions, and voltage variations. This standard applies to electrical and electronic equipment having a rated input current exceeding 16 A per phase, for connection to 50 Hz or 60 Hz A.C. networks. It does not apply to electrical and electronic equipment for connection to 400 Hz A.C. networks. Tests for these networks will be covered by future IEC standards. The object of this standard is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to voltage dips, short interruptions and voltage variations. This second edition cancels and replaces the first edition published in 1994 and its amendment 1 (2000). This second edition constitutes a technical revision in which: Preferred test values and durations have been added for the different environment classes. Tests for the three-phase systems have been specified. It has the status of a Basic EMC Publication in accordance with IEC Guide 107.   Dips and Interrupts Background Dips and interrupts can occur on AC power mains as a result of a fault in the distribution system such as an open circuit breaker or a sudden large load being turned on in the immediate vicinity. A power distribution system fault can cause a switch in the distribution grid to open and close a number of times, resulting in multiple interrupts to electrical and electronic equipment. Electronic products are tested for immunity to dips and interrupts to insure their continued reliable operation if subjected to dips and/or interrupts on the AC power mains. The European Union’s EMC Directive mandates dips and interrupts testing for virtually all electrical and electronic products as a condition for obtaining the CE Mark before shipping products to member states of