short-circuit withstand current rating for low voltage
... proper protection against the consequences of a short-circuit is one of the most fundamental safety measures for electrical equipment. It is important to minimize the effects in order to protect persons and the material. For operational reasons it is often desirable that devices survive short-circui ...
... proper protection against the consequences of a short-circuit is one of the most fundamental safety measures for electrical equipment. It is important to minimize the effects in order to protect persons and the material. For operational reasons it is often desirable that devices survive short-circui ...
Paper - WSU Conference Management
... overcurrent relaying. This is because we use DELTA/WYE connected transformers so the phase current on the 115 kV is reduced by the 3 as opposed to a three-phase fault. For example a typical 13.8 kV SLG fault through a 7.5 MVA transformer is 4,000 amps at 13.8 kV and 4000/(8.3*3) = 277 amps at 115 ...
... overcurrent relaying. This is because we use DELTA/WYE connected transformers so the phase current on the 115 kV is reduced by the 3 as opposed to a three-phase fault. For example a typical 13.8 kV SLG fault through a 7.5 MVA transformer is 4,000 amps at 13.8 kV and 4000/(8.3*3) = 277 amps at 115 ...
DIGITAL CONTROL OF VOLTAGE REGULATORS FOR FAST
... technique is first introduced to maximize the transient response of the VR and to balance the phase current for multiphase VR under high frequency dynamic load conditions. The VR and its control method is modeled and analyzed in depth for its targeting applications. Secondly, a predictive non-linear ...
... technique is first introduced to maximize the transient response of the VR and to balance the phase current for multiphase VR under high frequency dynamic load conditions. The VR and its control method is modeled and analyzed in depth for its targeting applications. Secondly, a predictive non-linear ...
Axis controller CPX-CMAX-C1-1 Terminal CPX
... Damage to the product from incorrect handling. Switch off the supply voltage before mounting and installation work. Switch on sup ply voltage only when mounting and installation work are completely finished. Never unplug or plug in the product and components attached to the axis connec ...
... Damage to the product from incorrect handling. Switch off the supply voltage before mounting and installation work. Switch on sup ply voltage only when mounting and installation work are completely finished. Never unplug or plug in the product and components attached to the axis connec ...
AN84 - Linear Technology Magazine Circuit Collection, Volume IV
... and to track it up to a maximum of fMAX = 2 • fMIN. A logic signal may also be coupled to PLL LPF to effect a 2:1 frequency shift, provided that the initial frequency has been set to less than 200kHz. ...
... and to track it up to a maximum of fMAX = 2 • fMIN. A logic signal may also be coupled to PLL LPF to effect a 2:1 frequency shift, provided that the initial frequency has been set to less than 200kHz. ...
LTM4600HV - 28VIN High Efficiency DC/DC uModule
... Pulling the RUN/SS pin low forces the controller into its shutdown state, turning off both Q1 and Q2. Releasing the pin allows an internal 1.2μA current source to charge up the softstart capacitor. When this voltage reaches 1.5V, the controller turns on and begins switching. At low load current the ...
... Pulling the RUN/SS pin low forces the controller into its shutdown state, turning off both Q1 and Q2. Releasing the pin allows an internal 1.2μA current source to charge up the softstart capacitor. When this voltage reaches 1.5V, the controller turns on and begins switching. At low load current the ...
Steady State Operation and Control of Power
... In a radial distribution feeder, voltage decreases towards the end of the feeder, as loads cause a voltage drop. However, it will be altered with the presence of DG. DG will increase the voltage at its connection point, which in turn will increase the voltage profile along the feeder. This increase ...
... In a radial distribution feeder, voltage decreases towards the end of the feeder, as loads cause a voltage drop. However, it will be altered with the presence of DG. DG will increase the voltage at its connection point, which in turn will increase the voltage profile along the feeder. This increase ...
UPC ENERGY PROCESSING BY MEANS OF POWER GYRATORS
... Simulated response of the circuit of Fig. 3.15 to load variations of step type Experimental response of the circuit of Fig. 3.15 to load variations of step type Matching a PV generator to a dc load using a voltage-to-voltage dc-to-dc switching converter PV Array operating points ( n(D) >1, D2 > D1) ...
... Simulated response of the circuit of Fig. 3.15 to load variations of step type Experimental response of the circuit of Fig. 3.15 to load variations of step type Matching a PV generator to a dc load using a voltage-to-voltage dc-to-dc switching converter PV Array operating points ( n(D) >1, D2 > D1) ...
MN202001EN/ Old S210-12-1
... inspected before being connected to the power distribution system to identify damage which may have occurred during storage. 1. The transformer exterior should be inspected for nicks, dents, and scratches. Repair damage to weatherresistant finishes promptly. 2. The tank cover and manhole/handhole ...
... inspected before being connected to the power distribution system to identify damage which may have occurred during storage. 1. The transformer exterior should be inspected for nicks, dents, and scratches. Repair damage to weatherresistant finishes promptly. 2. The tank cover and manhole/handhole ...
Arc welding - WordPress.com
... the base material and a consumable electrode rod or 'stick'. The electrode rod is made of a material that is compatible with the base material being welded and is covered with a flux that protects the weld area from oxidation and contamination by producing CO2 gas during the welding process. The ele ...
... the base material and a consumable electrode rod or 'stick'. The electrode rod is made of a material that is compatible with the base material being welded and is covered with a flux that protects the weld area from oxidation and contamination by producing CO2 gas during the welding process. The ele ...
About Fusetek FUSETEK is a 100% family owned
... Print an application by selecting ‘Print’ from your browser’s toolbar. To save your application, click on the ‘Save to PDF’ button and specify the folder to save the file in. Your application can also be printed from this PDF file once downloaded. Before starting a new application, click the ‘Reset ...
... Print an application by selecting ‘Print’ from your browser’s toolbar. To save your application, click on the ‘Save to PDF’ button and specify the folder to save the file in. Your application can also be printed from this PDF file once downloaded. Before starting a new application, click the ‘Reset ...
Partial Discharge Theory and Applications to Electrical
... equipment for peak performance have been recommended and implemented at various plants [1]. Detailed motor failure analysis has been completed; resulting in the identification of approximately 30% of failure causes being related to electrical failures [2]. A summary of the IEEE transaction entitled: ...
... equipment for peak performance have been recommended and implemented at various plants [1]. Detailed motor failure analysis has been completed; resulting in the identification of approximately 30% of failure causes being related to electrical failures [2]. A summary of the IEEE transaction entitled: ...
IEEE Draft Guide for the Specification of Fixed
... Transmission and Distribution Committee of the IEEE Power Engineering Society. At the time this standard was approved, the Capacitor Subcommittee consisted of the following membership: ...
... Transmission and Distribution Committee of the IEEE Power Engineering Society. At the time this standard was approved, the Capacitor Subcommittee consisted of the following membership: ...
Impact of low voltage - connected low carbon technologies on power
... include examples of diode rectifiers but these are for low power consumer electronics (radio, personal computers and game consoles). There are examples of phase-angle control of lighting, also at low power. Household loads of above 1kW have generally been restricted to heating loads (kettles, washin ...
... include examples of diode rectifiers but these are for low power consumer electronics (radio, personal computers and game consoles). There are examples of phase-angle control of lighting, also at low power. Household loads of above 1kW have generally been restricted to heating loads (kettles, washin ...
MAX6814 5-Pin Watchdog Timer Circuit
... a buffer and series resistor from the watchdog counter (Figure 1). When WDI is left unconnected, the watchdog timer is serviced within the watchdog timeout period by a low-high-low pulse from the counter chain. For minimum watchdog input current (minimum overall power consumption), leave WDI low for ...
... a buffer and series resistor from the watchdog counter (Figure 1). When WDI is left unconnected, the watchdog timer is serviced within the watchdog timeout period by a low-high-low pulse from the counter chain. For minimum watchdog input current (minimum overall power consumption), leave WDI low for ...
Development of Modulation Strategies for NPC Inverter Addressing
... As well known the two-level topology generates CMV in the motor windings furthermore causing motor failures due to bearing currents. As there are parasitic capacitive couplings between the stator windings and the motor frame a common mode leakage current will flow, hence there will be common mode el ...
... As well known the two-level topology generates CMV in the motor windings furthermore causing motor failures due to bearing currents. As there are parasitic capacitive couplings between the stator windings and the motor frame a common mode leakage current will flow, hence there will be common mode el ...
LTM4602 - 6A High Efficiency DC/DC uModule
... Pulling the RUN/SS pin low forces the controller into its shutdown state, turning off both Q1 and Q2. Releasing the pin allows an internal 1.2μA current source to charge up the soft-start capacitor. When this voltage reaches 1.5V, the controller turns on and begins switching. At low load current the ...
... Pulling the RUN/SS pin low forces the controller into its shutdown state, turning off both Q1 and Q2. Releasing the pin allows an internal 1.2μA current source to charge up the soft-start capacitor. When this voltage reaches 1.5V, the controller turns on and begins switching. At low load current the ...
Top-down Dendritic Input Increases the Gain of
... caused strongly attenuated back-propagating APs (Fig. 2C, expanded time scale, black traces), dendritic current injection caused long-lasting depolarizing dendritic events which were often associated with a burst of somatic APs (Fig. 2D; arrows and expanded time scale). This burst-firing behavior du ...
... caused strongly attenuated back-propagating APs (Fig. 2C, expanded time scale, black traces), dendritic current injection caused long-lasting depolarizing dendritic events which were often associated with a burst of somatic APs (Fig. 2D; arrows and expanded time scale). This burst-firing behavior du ...
North American UL Type 1, 2 and 3, and
... Damaging effects of transients and surges UL SPD Types and NEC® locations ...
... Damaging effects of transients and surges UL SPD Types and NEC® locations ...
Mercury-arc valve
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.