generator protection using multifunction digital relays
... units and now into the digital arena. The development of low cost microprocessor technology has made possible the multifunction digital relay where many relaying functions can be combined into a single unit. When applying such products, the major concern of the protection engineer is the redundancy ...
... units and now into the digital arena. The development of low cost microprocessor technology has made possible the multifunction digital relay where many relaying functions can be combined into a single unit. When applying such products, the major concern of the protection engineer is the redundancy ...
The Secret to Understanding Arc Flash Calculations
... Source impedance. Fault current sources like power generators cannot supply faults in a power system indefinitely. The fault current magnitude is, in fact, limited by the generator’s internal reactance, transmission line impedance, transformer impedance, and series reactors (when present). You can m ...
... Source impedance. Fault current sources like power generators cannot supply faults in a power system indefinitely. The fault current magnitude is, in fact, limited by the generator’s internal reactance, transmission line impedance, transformer impedance, and series reactors (when present). You can m ...
Generating Sets_MG
... carry out any kind of process with great accuracy. The company has UNI EN ISO 9001 - 2000 Quality System Certification and implements its standards in all its activities, from design to production, from purchases to sales. Each model is tested until it is fully ready to run when it is delivered. ...
... carry out any kind of process with great accuracy. The company has UNI EN ISO 9001 - 2000 Quality System Certification and implements its standards in all its activities, from design to production, from purchases to sales. Each model is tested until it is fully ready to run when it is delivered. ...
Troubleshoot Manual - Guillen`s Enterprises, Inc.
... may not tell you what work must be done or what part(s) must be replaced, but it will tell you what you must fix after you arrive. 1.5 Fixing the Hot Tub Use the S.T.A. to see how the Technical Support Department would approach the customer’s complaint. Try to fix the problem following the S.T.A. U ...
... may not tell you what work must be done or what part(s) must be replaced, but it will tell you what you must fix after you arrive. 1.5 Fixing the Hot Tub Use the S.T.A. to see how the Technical Support Department would approach the customer’s complaint. Try to fix the problem following the S.T.A. U ...
SPECIFICATION FOR APPROVAL
... This Adapter is capable to withstand ESD test voltage at any point around the enclosure as below. (Refer to IEC61000-4-2) ±12KV air discharge No damage. ±6KV contact discharge No damage. ...
... This Adapter is capable to withstand ESD test voltage at any point around the enclosure as below. (Refer to IEC61000-4-2) ±12KV air discharge No damage. ±6KV contact discharge No damage. ...
Gordon R
... economical induction motors operating on the available constant frequency AC power supply. For many mechanical loads, it has been recognized that a variable speed drive would provide improved performance, productivity, and energy efficiency. However, until recently, the provision of continuously var ...
... economical induction motors operating on the available constant frequency AC power supply. For many mechanical loads, it has been recognized that a variable speed drive would provide improved performance, productivity, and energy efficiency. However, until recently, the provision of continuously var ...
chap02_dc machines_260107
... that produce the main flux in the machines. The magnetic field of the field winding is approximately sinusoidal, thus AC voltage is induced in the armature winding as the rotor turns under the magnetic field of stator. The COMMUTATOR and BRUSH combination converts the AC generated voltages to DC. ...
... that produce the main flux in the machines. The magnetic field of the field winding is approximately sinusoidal, thus AC voltage is induced in the armature winding as the rotor turns under the magnetic field of stator. The COMMUTATOR and BRUSH combination converts the AC generated voltages to DC. ...
VSMD66694
... typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular product with the properties described in ...
... typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular product with the properties described in ...
The Oscilloscope - Crompton Instruments
... The sample points from the ADC are stored in memory as waveform points. More than one sample point may make up one waveform point. Together, the waveform points make up one waveform record. The number of waveform points used to make a waveform record is called the record length. The trigger system d ...
... The sample points from the ADC are stored in memory as waveform points. More than one sample point may make up one waveform point. Together, the waveform points make up one waveform record. The number of waveform points used to make a waveform record is called the record length. The trigger system d ...
Liebert Series 610 UPS DISCONTINUED PRODUCT
... cabinet. Test lift and balance the cabinets before transporting. Maintain minimum tilt from vertical at all times. Slots at the base of the modules and battery cabinets are intended for forklift use. Base slots will support the unit only if the forks are completely beneath the unit. Follow all batte ...
... cabinet. Test lift and balance the cabinets before transporting. Maintain minimum tilt from vertical at all times. Slots at the base of the modules and battery cabinets are intended for forklift use. Base slots will support the unit only if the forks are completely beneath the unit. Follow all batte ...
MAX14821 IO-Link Device Transceiver General Description Features
... Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Expo ...
... Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Expo ...
RM - RMS - Socomec
... Weight of 1 P or N (kg) Weight of 1 P + N (kg) Weight of 3 p + N (kg) (1) For a rated operational voltage Ue = 400 VAC. (2) Connection for RM32 1pole + N (1 module). ...
... Weight of 1 P or N (kg) Weight of 1 P + N (kg) Weight of 3 p + N (kg) (1) For a rated operational voltage Ue = 400 VAC. (2) Connection for RM32 1pole + N (1 module). ...
Serial Communication
... Output High -> Input High: Output sources current -> Input sinks current ...
... Output High -> Input High: Output sources current -> Input sinks current ...
THE 12 VOLT DOCTOR`S PRACTICAL HANDBOOK
... Adding the switch resistance in series with this lamp will more than double the total resistance, so that the current will be reduced to: 12 volt divided by 8.6 total Ohm = 1.4 Ampere which flow through switch and lamp. This lamp will therefore hardly glow at all. And another problem, at the switch ...
... Adding the switch resistance in series with this lamp will more than double the total resistance, so that the current will be reduced to: 12 volt divided by 8.6 total Ohm = 1.4 Ampere which flow through switch and lamp. This lamp will therefore hardly glow at all. And another problem, at the switch ...
Noise Control in Strain Gage Measurements
... Noise Control in Strain Gage Measurements conductive shield does not function as a barrier to magnetic noise. Magnetic shields operate on a different principle, and serve to bend or shunt the magnetic field around the conductor rather than eliminate it. Magnetic shields are made from high-permeabilit ...
... Noise Control in Strain Gage Measurements conductive shield does not function as a barrier to magnetic noise. Magnetic shields operate on a different principle, and serve to bend or shunt the magnetic field around the conductor rather than eliminate it. Magnetic shields are made from high-permeabilit ...
led retrofit options for linear fluorescent luminaires
... indicates that a testing laboratory found a representative group of product samples met UL’s safety requirements, usually based on published standards. The typical listed product is a complete system meant to be “plug and play” or “drop in,” meaning nothing else needs to be done to the product other ...
... indicates that a testing laboratory found a representative group of product samples met UL’s safety requirements, usually based on published standards. The typical listed product is a complete system meant to be “plug and play” or “drop in,” meaning nothing else needs to be done to the product other ...
Electrical Engineering Department
... of impregnating and surface treatment materials are also to be used in this area. Moreover resistance materials are also used for different purposes as potential divider, heating and controlling element. This subject provides the necessary information regarding all above materials so that the studen ...
... of impregnating and surface treatment materials are also to be used in this area. Moreover resistance materials are also used for different purposes as potential divider, heating and controlling element. This subject provides the necessary information regarding all above materials so that the studen ...
M-Flex™ Adjustable Speed Drive Controllers
... • Read and understand this bulletin in its entirety before installing or operating M-Flex™ drive controllers. Installation, adjustment, repair, and maintenance of the drive controllers must be performed by qualified personnel. ...
... • Read and understand this bulletin in its entirety before installing or operating M-Flex™ drive controllers. Installation, adjustment, repair, and maintenance of the drive controllers must be performed by qualified personnel. ...
SYNCRO AS-2M4 Brochure
... control panels. The 19” rack mount is particularly ideal for use in a combined FIP / QE90 EWIS panel or when fitting in IP rated enclosure. It houses and supports the entire FIP on a fully hinged swingout frame constructed of welded steel for strength and powder coated to match the fitted panel. The ...
... control panels. The 19” rack mount is particularly ideal for use in a combined FIP / QE90 EWIS panel or when fitting in IP rated enclosure. It houses and supports the entire FIP on a fully hinged swingout frame constructed of welded steel for strength and powder coated to match the fitted panel. The ...
PPE Hazard Assessment Worksheet
... when the fuse terminals are energized. Fuse handling equipment must be inspected daily to ensure the equipment is in good condition before using such tools. 1910.268(b)(7) Approach distances to exposed energized parts. The employee shall never approach or take any conductive objects closer then 12 i ...
... when the fuse terminals are energized. Fuse handling equipment must be inspected daily to ensure the equipment is in good condition before using such tools. 1910.268(b)(7) Approach distances to exposed energized parts. The employee shall never approach or take any conductive objects closer then 12 i ...
MODELING AND ANALYSIS OF POWER TRANSFORMERS UNDER FERRORESONANCE PHENOMENON.
... I would like to express mi gratitude to my supervisors for leading me throughout this 'transient'. To Francisco for his patience and his gentleness when leading our research. He always found the words to say to keep me motivated and focus in the goal. To José Antonio for always being there whiling t ...
... I would like to express mi gratitude to my supervisors for leading me throughout this 'transient'. To Francisco for his patience and his gentleness when leading our research. He always found the words to say to keep me motivated and focus in the goal. To José Antonio for always being there whiling t ...
Mains electricity
Mains electricity is the general-purpose alternating-current (AC) electric power supply. In the US, electric power is referred to by several names including household power, household electricity, house current, powerline, domestic power, wall power, line power, AC power, city power, street power, and grid power.The two principal properties of the electric power supply, voltage and frequency, differ between regions. A voltage of (nominally) 230 V and a frequency of 50 Hz is used in Europe, most of Asia, most of South America and Australia. In North America, the most common combination is 120 V and a frequency of 60 Hz. Other voltages exist, and some countries may have, for example, 230 V but 60 Hz. This is a concern to travelers, since portable appliances designed for one voltage and frequency combination may not operate or may be destroyed by another.The use of different plugs and sockets in different regions provides some protection from accidental use of appliances with incompatible voltage and frequency requirements.