Discussion on lightning impulse test procedure
... test voltage and so to obtain the internal stresses in transformers as they would have been caused by a standard wave-shape. But whereas deviations of a wave-shape have a different impact on different harmonics of transformer windings, a simple increase of the test voltage would overstress certain p ...
... test voltage and so to obtain the internal stresses in transformers as they would have been caused by a standard wave-shape. But whereas deviations of a wave-shape have a different impact on different harmonics of transformer windings, a simple increase of the test voltage would overstress certain p ...
A Review of ESD Stress Models
... automated handling environment. The schematic of the first CDM-test setup was developed by P.R. Bossard [7]. The configuration describes the contact mode method (because of the used relays). The device was lying in "Dead Bug" position on a ground plane to achieve a well-defined, large capacitance an ...
... automated handling environment. The schematic of the first CDM-test setup was developed by P.R. Bossard [7]. The configuration describes the contact mode method (because of the used relays). The device was lying in "Dead Bug" position on a ground plane to achieve a well-defined, large capacitance an ...
PCB/Soldering Notes
... Schematic was carried out. It was discovered that many of the components were not properly grounded due to accidental “islands” created on the PCB. The entire front and back layers of the PCB were designed to be a ground plane. However, these “islands” that were created made certain components to be ...
... Schematic was carried out. It was discovered that many of the components were not properly grounded due to accidental “islands” created on the PCB. The entire front and back layers of the PCB were designed to be a ground plane. However, these “islands” that were created made certain components to be ...
Stave Program
... few more components, in particular an air-core transformer. Our collaborators at Yale have been engaged in market surveys for the viability of commercial options for buck regulators. A main concern of commercial options are their radiation hardness. At BNL we are assisting by providing radiation exp ...
... few more components, in particular an air-core transformer. Our collaborators at Yale have been engaged in market surveys for the viability of commercial options for buck regulators. A main concern of commercial options are their radiation hardness. At BNL we are assisting by providing radiation exp ...
Torsional Vibration Testing of a Non
... aluminum shaft were extracted. The results obtained by the proposed transducer agreed favorably with theoretical results. ...
... aluminum shaft were extracted. The results obtained by the proposed transducer agreed favorably with theoretical results. ...
Reasons for selecting the intrinsically safe concept
... 1.2 The advantages of intrinsic safety The major advantage of intrinsic safety is that it provides a solution to all the problems of hazardous areas (for equipment requiring limited power) and is the only technique, which meets this criterion. The significant factors are as follows: a) The IS techni ...
... 1.2 The advantages of intrinsic safety The major advantage of intrinsic safety is that it provides a solution to all the problems of hazardous areas (for equipment requiring limited power) and is the only technique, which meets this criterion. The significant factors are as follows: a) The IS techni ...
Configurable Kelvin Technology for Test Optimization
... Through finite element analysis (FEA), the gap between the force and sense contact was optimized to prevent shorting and to maximize the sense contact life. The use of two different technologies allowed us to use an existing rigid contact as the force contact to provide the best current carrying cap ...
... Through finite element analysis (FEA), the gap between the force and sense contact was optimized to prevent shorting and to maximize the sense contact life. The use of two different technologies allowed us to use an existing rigid contact as the force contact to provide the best current carrying cap ...
Inverter Performance Test Protocal
... cases, certified factory test results may suffice in lieu of further testing for certification. Some tests like the array utilization due to MPPT abnormalities can be extremely difficult since the efficiency also changes with MPP operating points. These tests must be examined in great detail to make ...
... cases, certified factory test results may suffice in lieu of further testing for certification. Some tests like the array utilization due to MPPT abnormalities can be extremely difficult since the efficiency also changes with MPP operating points. These tests must be examined in great detail to make ...
EXTRACT FANS IN DWELLINGS
... isolation is that it is often remote from the extract fan and there is a very real risk of someone inadvertently switching the supply back on. The electrician is therefore required to take adequate precautions against this happening by means such as securing the main switch with a padlock or locking ...
... isolation is that it is often remote from the extract fan and there is a very real risk of someone inadvertently switching the supply back on. The electrician is therefore required to take adequate precautions against this happening by means such as securing the main switch with a padlock or locking ...
Partial Discharge Theory and Technologies Related to
... cycle we are creating a positive charge and the resultant partial discharges. During the third quarter cycle, this positive charge is effectively reversed, resulting in a charge in the reverse direction, and the resultant partial discharges. This is referred to as the “signature” of partial discharg ...
... cycle we are creating a positive charge and the resultant partial discharges. During the third quarter cycle, this positive charge is effectively reversed, resulting in a charge in the reverse direction, and the resultant partial discharges. This is referred to as the “signature” of partial discharg ...
Indiana University – Purdue University Fort Wayne Department of Engineering Project Title:
... bills. One way of reducing these costs is to monitor how much power is being consumed in realtime and from that data make informed decisions about how to manage the electrical devices being powered. A system which can give users an idea of how much power is being, has been, and might be, consumed wi ...
... bills. One way of reducing these costs is to monitor how much power is being consumed in realtime and from that data make informed decisions about how to manage the electrical devices being powered. A system which can give users an idea of how much power is being, has been, and might be, consumed wi ...
1 Scope (regarding no. 1)
... selectable. The control has an inertia that must be adapted to the respective local conditions. Independent protection areas must be controlled universally. Error messages are generated if the actual potential or the anode current permanently fall outside the prescribed framework. In the case of pro ...
... selectable. The control has an inertia that must be adapted to the respective local conditions. Independent protection areas must be controlled universally. Error messages are generated if the actual potential or the anode current permanently fall outside the prescribed framework. In the case of pro ...
SYLLABUS CLASS-VIII - e-CTLT
... 3. Switch off electrical items that are not in regular use at the plug and ensure that when we are away from the house for any length of time that you unplug and switch off electrical items as items left plugged in can be a fire risk and waste energy if left on standby. 4. Do not use any electrical ...
... 3. Switch off electrical items that are not in regular use at the plug and ensure that when we are away from the house for any length of time that you unplug and switch off electrical items as items left plugged in can be a fire risk and waste energy if left on standby. 4. Do not use any electrical ...
Residential Load Models for Network Planning Purposes
... refrigerator is not shown in fig. 2, but its impact on the energy consumption of a household is significant and the peak power is between 80 W to 150 W. C. Classification of Residential Customers Variations in the consumption are not only due to the preferences of the customer but also to the infras ...
... refrigerator is not shown in fig. 2, but its impact on the energy consumption of a household is significant and the peak power is between 80 W to 150 W. C. Classification of Residential Customers Variations in the consumption are not only due to the preferences of the customer but also to the infras ...
escc3012004iss4
... specification and ESCC Generic Specification No. 3012. Deviations from the Generic Specification, applicable to this specification only, are detailed in Para. 4.2. Deviations from the Generic Specification and this Detail Specification, formally agreed with specific Manufacturers on the basis that t ...
... specification and ESCC Generic Specification No. 3012. Deviations from the Generic Specification, applicable to this specification only, are detailed in Para. 4.2. Deviations from the Generic Specification and this Detail Specification, formally agreed with specific Manufacturers on the basis that t ...
iNDustrial PoWer resistors
... resistance value to ensure that the braking capacity of the drive is not exceeded. As standard Cressall manufacture DBRs with a –0/+10% tolerance to ensure optimum performance (other values can be achieved if required). When sizing brake resistors, key parameters for consideration are resistance val ...
... resistance value to ensure that the braking capacity of the drive is not exceeded. As standard Cressall manufacture DBRs with a –0/+10% tolerance to ensure optimum performance (other values can be achieved if required). When sizing brake resistors, key parameters for consideration are resistance val ...
USBtest 2000 User`s Manual
... The USBtest 2000 is a self-contained unit containing two independent USB devices. Test software resides on both the host PC and USBtest unit. Simple command line invocation allows tests to be embedded into batch test files. Software included with the USBtest unit supports a wide variety of host cont ...
... The USBtest 2000 is a self-contained unit containing two independent USB devices. Test software resides on both the host PC and USBtest unit. Simple command line invocation allows tests to be embedded into batch test files. Software included with the USBtest unit supports a wide variety of host cont ...
Portable appliance testing
Portable appliance testing (commonly known as ""PAT"", ""PAT Inspection"" or ""PAT Testing"") is the name of a process in the United Kingdom, the Republic of Ireland, New Zealand and Australia by which electrical appliances are routinely checked for safety. The correct term for the whole process is ""in-service inspection & testing of electrical equipment"".Similar procedures exist in other countries, for example, testing of equipment according to DGUV Vorschrift 3 in Germany.Health and safety regulations require that electrical appliances are safe and maintained to prevent harm to workers. Many equipment manufacturers recommend testing at regular intervals to ensure continual safety; the interval between tests depending on both the type of appliance and the environment in which it is to be used. The European Low Voltage Directive governs the manufacture or importation of electrical appliances. Compliance to this has to be declared and indicated by the display of the CE mark on the product. The responsibility for this lies with the manufacturer or the importer and is policed by Trading Standards.Testing equipment has been specifically developed for PAT inspections, based on the testing equipment used by manufacturers to ensure compliance with the British Standard Code of Practice and European product standards relevant to that type of appliance. This in turn allows testing and the interpretation of results to be de-skilled to a large extent. The inspection of the appliances can largely be carried out in-house in many organisations. This can result in cost savings and more flexibility as to exactly when a PAT is carried out.