The Pyramidal Electric Transducer
... random and of short duration (nanosecond range) as well as of wide frequency of occurrence. Antennas capable of handling similar short-pulse waveforms can be found in radar systems, where they are called the pyramidal horn antennas. Intriguingly, popular scientific literature describes inexplicable ...
... random and of short duration (nanosecond range) as well as of wide frequency of occurrence. Antennas capable of handling similar short-pulse waveforms can be found in radar systems, where they are called the pyramidal horn antennas. Intriguingly, popular scientific literature describes inexplicable ...
Practical Guide to Arc Flash Hazards
... – From exposure to arc flash – Can cause more surface burns if the initial arc ignites other material, such as clothing – 1st degree to third degree burns – Has caused death ...
... – From exposure to arc flash – Can cause more surface burns if the initial arc ignites other material, such as clothing – 1st degree to third degree burns – Has caused death ...
Power Electronics 4th year elective
... Electric shocks have been arbitrarily divided into low and high voltage with the boundary between the two set at 1000 V although care must be taken as some authors have located the boundary as low as 380 Vac when differentiating between the two “types” of shock. It has already been seen that the bod ...
... Electric shocks have been arbitrarily divided into low and high voltage with the boundary between the two set at 1000 V although care must be taken as some authors have located the boundary as low as 380 Vac when differentiating between the two “types” of shock. It has already been seen that the bod ...
ee2353 high voltage engineering
... Dissolved water, gas or the presence of any other form of contamination and sludge also affect the breakdown strength considerably., It is, therefore, not possible to describe the breakdown mechanism by a single theoretical analysis which may take into account all known observed factors affecting th ...
... Dissolved water, gas or the presence of any other form of contamination and sludge also affect the breakdown strength considerably., It is, therefore, not possible to describe the breakdown mechanism by a single theoretical analysis which may take into account all known observed factors affecting th ...
I DDQ
... easily placed between the CUT and the bypass Capacitor of the power pin Capable of measuring small currents Non intrusive, no drop of VDD ...
... easily placed between the CUT and the bypass Capacitor of the power pin Capable of measuring small currents Non intrusive, no drop of VDD ...
Article 555 Marinas and Boatyards
... Water level isn’t constant. Ocean tides rise and fall, while lakes and rivers vary in depth in response to rain. To provide power to a marina or boatyard, you must allow for these variations in water level between the point of use and the power source. Article 555 addresses this issue. This article ...
... Water level isn’t constant. Ocean tides rise and fall, while lakes and rivers vary in depth in response to rain. To provide power to a marina or boatyard, you must allow for these variations in water level between the point of use and the power source. Article 555 addresses this issue. This article ...
tree lightning protection Systems (part one)
... the object or tree that initiated the streamer. A typical lightning strike has three or more upward and downward strokes. Each stroke lasts about 0.0001 to 0.0002 seconds, and each strike (or flash) 0.1 to 0.2 seconds. The current in a stroke averages between 30,000 and 50,000 amps, with voltages ra ...
... the object or tree that initiated the streamer. A typical lightning strike has three or more upward and downward strokes. Each stroke lasts about 0.0001 to 0.0002 seconds, and each strike (or flash) 0.1 to 0.2 seconds. The current in a stroke averages between 30,000 and 50,000 amps, with voltages ra ...
TR41.7-09-11-005-MR1-2564
... AC power fault testing is conducted with voltages to simulate contact to a mains supply operating at 120/240 V, 120/208 V 3 phase-Y or 277/480 V 3 phase-Y. Testing is also conducted at levels up to 600 Vac for contact or induction faults from higher voltage AC lines, limited by a primary protector. ...
... AC power fault testing is conducted with voltages to simulate contact to a mains supply operating at 120/240 V, 120/208 V 3 phase-Y or 277/480 V 3 phase-Y. Testing is also conducted at levels up to 600 Vac for contact or induction faults from higher voltage AC lines, limited by a primary protector. ...
PQ_Unit II
... A one-line diagram illustrating the power electronics that are used to achieve the compensation is shown in Fig. 2.4. When a disturbance to the input voltage is detected, a fast switch opens and the power is supplied through the series-connected electronics. This circuit adds or subtracts a voltage ...
... A one-line diagram illustrating the power electronics that are used to achieve the compensation is shown in Fig. 2.4. When a disturbance to the input voltage is detected, a fast switch opens and the power is supplied through the series-connected electronics. This circuit adds or subtracts a voltage ...
The capacitive divider in medium-voltage switchgear
... of their capacitances. The voltage is measured across one of the capacitors. If the capacitances of the capacitors in the divider are known, it is possible to calculate the applied voltage from the measured voltage. Application areas for capacitive voltage dividers in medium-voltage switchgear syste ...
... of their capacitances. The voltage is measured across one of the capacitors. If the capacitances of the capacitors in the divider are known, it is possible to calculate the applied voltage from the measured voltage. Application areas for capacitive voltage dividers in medium-voltage switchgear syste ...
Technical Article 650V TRENCHSTOP 5
... efficiency levels for high speed switching topologies such are boost PFC (AC/DC) stages and high voltage DC/DC topologies commonly found in applications such as Photovoltaic Inverters, Uninterruptible Power Supplies (UPS) and Inverterized Welding Machines. By Mark Thomas, Discrete IGBT Product Marke ...
... efficiency levels for high speed switching topologies such are boost PFC (AC/DC) stages and high voltage DC/DC topologies commonly found in applications such as Photovoltaic Inverters, Uninterruptible Power Supplies (UPS) and Inverterized Welding Machines. By Mark Thomas, Discrete IGBT Product Marke ...
chapter v - Florida Building Commission
... CHAPTER V RESIDENTIAL WIRING 5.1. THE SERVICE ENTRANCE Buildings and other structures receive the electrical energy through the service entrance. In residential wiring, the electric company supply this energy through three conductors: two phase conductors (hot), and one ground (neutral). Between any ...
... CHAPTER V RESIDENTIAL WIRING 5.1. THE SERVICE ENTRANCE Buildings and other structures receive the electrical energy through the service entrance. In residential wiring, the electric company supply this energy through three conductors: two phase conductors (hot), and one ground (neutral). Between any ...
WFM Water Meter Instructions
... a magnet that rotates on the face of the meter under the lens. The sensor turns on and off once each time the magnet passes under it. Sensors are designed for electronic control loads, and should not be used to switch power loads or line voltages. See maximum current and voltage ratings, under Speci ...
... a magnet that rotates on the face of the meter under the lens. The sensor turns on and off once each time the magnet passes under it. Sensors are designed for electronic control loads, and should not be used to switch power loads or line voltages. See maximum current and voltage ratings, under Speci ...
2 Tap Changer Types
... the switching operation of load tap changers (LTC). Existing methods and techniques for dynamic measurements on load tap-changers are based on measuring current and/or voltage on the primary side of the transformer and short-circuiting the secondary side to minimize the inductance in the circuit. St ...
... the switching operation of load tap changers (LTC). Existing methods and techniques for dynamic measurements on load tap-changers are based on measuring current and/or voltage on the primary side of the transformer and short-circuiting the secondary side to minimize the inductance in the circuit. St ...
New ways of measuring pull-in voltage and transient
... Several methods to detect the pull-in event are existing. The probably simplest way is to look at the membrane while increasing the stimulus voltage step by step. When the pull-in voltage is reached, the closing of the air-gap between the two electrodes will lead to interference fringes which are vi ...
... Several methods to detect the pull-in event are existing. The probably simplest way is to look at the membrane while increasing the stimulus voltage step by step. When the pull-in voltage is reached, the closing of the air-gap between the two electrodes will lead to interference fringes which are vi ...
Material and Energy Efficient Busbar Systems in
... millennium. In the meantime this relation changed dramatically: Copper today is sold per mass unit between factor 3 and 4 higher than aluminium. Taking the price difference into consideration aluminium has a today cost advantage of factor 6 to 8 on the pure metal price. The development of copper and ...
... millennium. In the meantime this relation changed dramatically: Copper today is sold per mass unit between factor 3 and 4 higher than aluminium. Taking the price difference into consideration aluminium has a today cost advantage of factor 6 to 8 on the pure metal price. The development of copper and ...
coupling and decoupling secondary dq currents based brushless
... can link to the opposite winding. The torque production occurs as a result of electromechanical energy conversion response in the machine. In order to avoid coupling in frequency, BDFRM is designed with deferent stator pole numbers of primary and secondary windings. Furthermore, the number of rotor ...
... can link to the opposite winding. The torque production occurs as a result of electromechanical energy conversion response in the machine. In order to avoid coupling in frequency, BDFRM is designed with deferent stator pole numbers of primary and secondary windings. Furthermore, the number of rotor ...
Press release: - American Burn Association
... sleep, electricity is keeping our food cold and our security systems operating. Throughout the day, throughout the year, we tend to take electricity for granted. However, as fire and emergency service workers and burn care professionals, we see the results, often devastating, when electricity escape ...
... sleep, electricity is keeping our food cold and our security systems operating. Throughout the day, throughout the year, we tend to take electricity for granted. However, as fire and emergency service workers and burn care professionals, we see the results, often devastating, when electricity escape ...
Electromagnetic compatibility
Electromagnetic compatibility (EMC) is the branch of electrical sciences which studies the unintentional generation, propagation and reception of electromagnetic energy with reference to the unwanted effects (electromagnetic interference, or EMI) that such energy may induce. The goal of EMC is the correct operation, in the same electromagnetic environment, of different equipment which use electromagnetic phenomena, and the avoidance of any interference effects.In order to achieve this, EMC pursues two different kinds of issues. Emission issues are related to the unwanted generation of electromagnetic energy by some source, and to the countermeasures which should be taken in order to reduce such generation and to avoid the escape of any remaining energies into the external environment. Susceptibility or immunity issues, in contrast, refer to the correct operation of electrical equipment, referred to as the victim, in the presence of unplanned electromagnetic disturbances.Interference mitigation and hence electromagnetic compatibility is achieved by addressing both emission and susceptibility issues, i.e., quieting the sources of interference and hardening the potential victims. The coupling path between source and victim may also be separately addressed to increase its attenuation.