SONDERKOLLOQUIUM der TF am 14.02.2014 Herr Prof. Costas D. Vournas
... Load tap changers (LTC) are used traditionally to control the distribution side voltage, while capacitor banks are switched on and off to correct power factor during load variations. The problem with this practice is that LTC tap adjustment is contributing to load recovery after a contingency and th ...
... Load tap changers (LTC) are used traditionally to control the distribution side voltage, while capacitor banks are switched on and off to correct power factor during load variations. The problem with this practice is that LTC tap adjustment is contributing to load recovery after a contingency and th ...
Section #26 24 05 - Service Entrance TVSS Protection
... Submittal for approval: Provide the following transient protection submittals: ...
... Submittal for approval: Provide the following transient protection submittals: ...
Lec_18-Thyristors
... Mainly used where high currents and voltages are involved, and are often used to control alternating currents, where the change of polarity of the current causes the device to switch off automatically; referred to as Zero Cross operation. Thyristors can be used as the control elements for phase angl ...
... Mainly used where high currents and voltages are involved, and are often used to control alternating currents, where the change of polarity of the current causes the device to switch off automatically; referred to as Zero Cross operation. Thyristors can be used as the control elements for phase angl ...
Thyristors Introduction & Characteristics
... Mainly used where high currents and voltages are involved, and are often used to control alternating currents, where the change of polarity of the current causes the device to switch off automatically; referred to as Zero Cross operation. Thyristors can be used as the control elements for phase angl ...
... Mainly used where high currents and voltages are involved, and are often used to control alternating currents, where the change of polarity of the current causes the device to switch off automatically; referred to as Zero Cross operation. Thyristors can be used as the control elements for phase angl ...
Workshop
... creates a magnetic field and thus stores energy. • Impedance ZL= jωL , where ω = 2πf. ...
... creates a magnetic field and thus stores energy. • Impedance ZL= jωL , where ω = 2πf. ...
6S06pp_L27 - University of Iowa Physics
... Why AC is better than DC • DC power is provided at one voltage only • AC power can be stepped up or down to provide any voltage required • DC is very expensive to transmit over large distances compared to AC, so many plants are required • DC power plants must be close to users • AC plants can be fa ...
... Why AC is better than DC • DC power is provided at one voltage only • AC power can be stepped up or down to provide any voltage required • DC is very expensive to transmit over large distances compared to AC, so many plants are required • DC power plants must be close to users • AC plants can be fa ...
L27
... Why AC is better than DC • DC power is provided at one voltage only • AC power can be stepped up or down to provide any voltage required • DC is very expensive to transmit over large distances compared to AC, so many plants are required • DC power plants must be close to users • AC plants can be fa ...
... Why AC is better than DC • DC power is provided at one voltage only • AC power can be stepped up or down to provide any voltage required • DC is very expensive to transmit over large distances compared to AC, so many plants are required • DC power plants must be close to users • AC plants can be fa ...
Direct Current DC Alternating Current (AC) AC current
... Why AC is better than DC • DC power is provided at one voltage only • AC power can be stepped up or down to provide any voltage required • DC is very expensive to transmit over large distances compared to AC, so many plants are required • DC power plants must be close to users • AC plants can be fa ...
... Why AC is better than DC • DC power is provided at one voltage only • AC power can be stepped up or down to provide any voltage required • DC is very expensive to transmit over large distances compared to AC, so many plants are required • DC power plants must be close to users • AC plants can be fa ...
Hall Effect Devices as Current Sensors
... Monitoring current in a test fixture is typically accomplished by monitoring the voltage dropped across a resistor in series with the load. In Figure 1 we see a typical circuit. When the voltage across R5 reaches about 600 mV the transistor Q2 starts to conduct. As Q2 conducts the voltage across R7 ...
... Monitoring current in a test fixture is typically accomplished by monitoring the voltage dropped across a resistor in series with the load. In Figure 1 we see a typical circuit. When the voltage across R5 reaches about 600 mV the transistor Q2 starts to conduct. As Q2 conducts the voltage across R7 ...
Rates of Charge Flow and Energy Transfer
... terminal to the next device. 3. Follow the current path until you reach the negative terminal. 4. Check your work ! ...
... terminal to the next device. 3. Follow the current path until you reach the negative terminal. 4. Check your work ! ...
BAT85 Schottky Diodes FEATURES ♦
... BAT85 ELECTRICAL CHARACTERISTICS Ratings at 25 °C ambient temperature unless otherwise specified ...
... BAT85 ELECTRICAL CHARACTERISTICS Ratings at 25 °C ambient temperature unless otherwise specified ...
4.3 Notes - Seymour ISD
... What happens to the energy when resistance is present in electrical systems? ...
... What happens to the energy when resistance is present in electrical systems? ...
4.3 Notes - Seymour ISD
... Resistance- measure of the ability of an electrical device to oppose flow of charge through a device Measured in OHMS (Ω) ...
... Resistance- measure of the ability of an electrical device to oppose flow of charge through a device Measured in OHMS (Ω) ...
GFC SERIES Low ProFileTM 400 Hz AND 28 VDC
... Since its beginning in 1960, Unitron has specialized in the design and development of reliable solid-state power systems. Through an innovative design, advanced self-diagnostic systems (BITE) and modular construction, Unitron products assure maximum power availability and minimal repair time. The Lo ...
... Since its beginning in 1960, Unitron has specialized in the design and development of reliable solid-state power systems. Through an innovative design, advanced self-diagnostic systems (BITE) and modular construction, Unitron products assure maximum power availability and minimal repair time. The Lo ...
16.3 Notes
... When devices are connected in __________________, the voltage across each device is the ______________. The __________________ in each device does not have to be the same. Instead the sum of all the devices equals the ____________ current. A _________________ in any one path in a parallel circuit do ...
... When devices are connected in __________________, the voltage across each device is the ______________. The __________________ in each device does not have to be the same. Instead the sum of all the devices equals the ____________ current. A _________________ in any one path in a parallel circuit do ...
Designing to Protect MAX2140`s Internal ESD
... design in Figure 2 above, a short cable will significantly reduce resistance and voltage drop, while using a reasonable capacitor value will reduce the maximum current surge to an acceptable level. ...
... design in Figure 2 above, a short cable will significantly reduce resistance and voltage drop, while using a reasonable capacitor value will reduce the maximum current surge to an acceptable level. ...
Electric Power and Electrical Energy Use Quiz
... 3. Which equation can be used to calculate the power of an electric device? a) Power = Current x Voltage b) Power = Current/Voltage c) Power = Voltage/Current d) none of the above ...
... 3. Which equation can be used to calculate the power of an electric device? a) Power = Current x Voltage b) Power = Current/Voltage c) Power = Voltage/Current d) none of the above ...
Surge protector
A surge protector (or surge suppressor) is an appliance/device designed to protect electrical devices from voltage spikes. A surge protector attempts to limit the voltage supplied to an electric device by either blocking or by shorting to ground any unwanted voltages above a safe threshold. This article primarily discusses specifications and components relevant to the type of protector that diverts (shorts) a voltage spike to ground; however, there is some coverage of other methods.The terms surge protection device (SPD), or transient voltage surge suppressor (TVSS), are used to describe electrical devices typically installed in power distribution panels, process control systems, communications systems, and other heavy-duty industrial systems, for the purpose of protecting against electrical surges and spikes, including those caused by lightning. Scaled-down versions of these devices are sometimes installed in residential service entrance electrical panels, to protect equipment in a household from similar hazards.Many power strips have basic surge protection built in; these are typically clearly labeled as such. However, power strips that do not provide surge protection are sometimes erroneously referred to as ""surge protectors"".