2005 Code Changes
... 1. If circuit breakers are not maintained, extended clearing times or nuisance operation may compromise coordination. 2. If using zone selective interlocking option, molded case and insulated case circuit breakers still have an instantaneous trip that overrides the zone selective tripping feature. B ...
... 1. If circuit breakers are not maintained, extended clearing times or nuisance operation may compromise coordination. 2. If using zone selective interlocking option, molded case and insulated case circuit breakers still have an instantaneous trip that overrides the zone selective tripping feature. B ...
AND8252/D High Efficiency Eight Output, 60 W Set Top Box Power
... technique enhances the load regulation on both outputs with little degradation of cross regulation effects between the two outputs. The status of the flyback or reset voltage on T1 is monitored by the lower auxiliary winding on the transformer through R8. This prevents the MOSFET from turning on bef ...
... technique enhances the load regulation on both outputs with little degradation of cross regulation effects between the two outputs. The status of the flyback or reset voltage on T1 is monitored by the lower auxiliary winding on the transformer through R8. This prevents the MOSFET from turning on bef ...
Novel 9-Steps Automatic Voltage Regulator based on Two Step
... level of voltage to the load. For example, during one jump of voltage controlling let from 240 V to 230 V, this means the relay contacts will connect firstly 240 V then for a short period which during jumping motion there is no voltage from supply to the load i.e. 0 V then connect 230 V to the AC lo ...
... level of voltage to the load. For example, during one jump of voltage controlling let from 240 V to 230 V, this means the relay contacts will connect firstly 240 V then for a short period which during jumping motion there is no voltage from supply to the load i.e. 0 V then connect 230 V to the AC lo ...
M81713FP HVIC High Voltage Half-Bridge Driver 600V +/
... HO outputs “L” level as long as UV error for VCC is detected. LO is locked at “L” as long as UV error for VCC is detected. (VCC)* HO responds to IN if VCC exceeds VCC UV reset level. After VCC exceeds VCC UV reset level, the lock for LO is removed and responds to IN signal. ...
... HO outputs “L” level as long as UV error for VCC is detected. LO is locked at “L” as long as UV error for VCC is detected. (VCC)* HO responds to IN if VCC exceeds VCC UV reset level. After VCC exceeds VCC UV reset level, the lock for LO is removed and responds to IN signal. ...
EMI4183MU 数据资料DataSheet下载
... limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for ea ...
... limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for ea ...
A Novel Method for Transmission Network Fault Location Using
... In the “waveform matching” approach, a power system model is used to carry out simulation study. A fault needs to be posed to obtain the during-fault simulated waveforms. Then the matching is made between the simulated waveforms and the recorded waveforms to determine the fault location based on the ...
... In the “waveform matching” approach, a power system model is used to carry out simulation study. A fault needs to be posed to obtain the during-fault simulated waveforms. Then the matching is made between the simulated waveforms and the recorded waveforms to determine the fault location based on the ...
MC33897, Single Wire CAN Transceiver
... Max Time to VBUSMOD = 3.7 V, 6.0 V ≤ VBATT ≤ 26.5 V (10) Min Time to VBUSMOD = 1.0 V, 6.0 V ≤ VBATT ≤ 26.5 V (10) Max Time to VBUSMOD = 2.7 V, VBATT = 5.0 V (10) Min Time to VBUSMOD = 1.0 V, VBATT = 5.0 V (10) ...
... Max Time to VBUSMOD = 3.7 V, 6.0 V ≤ VBATT ≤ 26.5 V (10) Min Time to VBUSMOD = 1.0 V, 6.0 V ≤ VBATT ≤ 26.5 V (10) Max Time to VBUSMOD = 2.7 V, VBATT = 5.0 V (10) Min Time to VBUSMOD = 1.0 V, VBATT = 5.0 V (10) ...
S. Lim, J. Ranson, D.M. Otten and D.J. Perreault, Two-Stage Power Conversion Architecture Suitable for Wide Range Input Voltage, IEEE Transactions on Power Electronics , Vol. 30, No. 2, pp. 805-816, Feb. 2015.
... frequency. However, the sizes of passive components do not necessarily decrease monotonically with frequency, owing to magnetic-core loss, voltage breakdown, and heat transfer limits [6], [16]–[20]. Consequently, achieving substantial miniaturization through high frequency operation further relies u ...
... frequency. However, the sizes of passive components do not necessarily decrease monotonically with frequency, owing to magnetic-core loss, voltage breakdown, and heat transfer limits [6], [16]–[20]. Consequently, achieving substantial miniaturization through high frequency operation further relies u ...
2. General Requirements for the Intelligent Motor Protection Relay
... Each individual Intelligent Motor Protection Relay (IMPR) shall be mounted inside a drawer of an MCC switchboard. In option, it can be completed by a local Human Machine Interface (HMI) display and control unit mounted on the front panel of the drawer. The IMPR shall include accurate measurement pro ...
... Each individual Intelligent Motor Protection Relay (IMPR) shall be mounted inside a drawer of an MCC switchboard. In option, it can be completed by a local Human Machine Interface (HMI) display and control unit mounted on the front panel of the drawer. The IMPR shall include accurate measurement pro ...
A Reduced Clock-swing Flip-flop (RCSFF) For 63% Power
... is also beneficial to decrease the capacitance of a clock system by reducing the number of MOSFET’s connected to the clock distribution network. II. REDUCED CLOCK-SWING FLIP-FLOP Reduced clock-swing flip-flop (RCSFF) is proposed to lower the voltage swing of the clock system. Fig. 2 shows schematic ...
... is also beneficial to decrease the capacitance of a clock system by reducing the number of MOSFET’s connected to the clock distribution network. II. REDUCED CLOCK-SWING FLIP-FLOP Reduced clock-swing flip-flop (RCSFF) is proposed to lower the voltage swing of the clock system. Fig. 2 shows schematic ...
Electrical Protection Methods and Devices
... 1. Protection for Safety Purpose In any electrical installation there is an ever present risk of injury and/or damage from the physiological, thermal and magnetic effects of electric current and from mechanical movement associated with electrical devices and machines. This section introduces the met ...
... 1. Protection for Safety Purpose In any electrical installation there is an ever present risk of injury and/or damage from the physiological, thermal and magnetic effects of electric current and from mechanical movement associated with electrical devices and machines. This section introduces the met ...
Mohamed Ashour
... distortion levels at utility and user buses. All supply side buses, in Alexandria now have measurable harmonic content in voltage and current. On end-consumer buses, the harmonic monitoring and measurement are still going on. This change in the end-consumer load profile is a disadvantage for energy ...
... distortion levels at utility and user buses. All supply side buses, in Alexandria now have measurable harmonic content in voltage and current. On end-consumer buses, the harmonic monitoring and measurement are still going on. This change in the end-consumer load profile is a disadvantage for energy ...
University of Pune FACULTY OF ENGINEERING T.E. Electrical
... Construction of single phase induction motor, mmf produced by single phase stator winding carrying an alternating current. Its representation by two revolving fields. Equivalent circuit and torque-slip characteristics on the basis of double revolving field theory. Tests to determine the parameters o ...
... Construction of single phase induction motor, mmf produced by single phase stator winding carrying an alternating current. Its representation by two revolving fields. Equivalent circuit and torque-slip characteristics on the basis of double revolving field theory. Tests to determine the parameters o ...
DC1521 - LT3956EUHE Evaluation Kit Quick
... Demonstration circuit 1521A is a high voltage monolithic LED driver with an integrated 3.3A, 84V power switch. The demonstration circuit is assembled as a boost topology from 6V-80V* input and up to 67V LED output at 370mA (*VIN must not exceed VLED for proper operation). DC1521A features PWM dimmin ...
... Demonstration circuit 1521A is a high voltage monolithic LED driver with an integrated 3.3A, 84V power switch. The demonstration circuit is assembled as a boost topology from 6V-80V* input and up to 67V LED output at 370mA (*VIN must not exceed VLED for proper operation). DC1521A features PWM dimmin ...
THF - APQ Power
... Arteche Third Harmonic Filters solve problems caused by 1-phase power electronics loads such as computers, UPS, slot machines and other equipment having switch mode power supplies. Our 3rd Harmonic Filters are ideal for plug-in type equipment, but to accommodate multiple loads, they can either be su ...
... Arteche Third Harmonic Filters solve problems caused by 1-phase power electronics loads such as computers, UPS, slot machines and other equipment having switch mode power supplies. Our 3rd Harmonic Filters are ideal for plug-in type equipment, but to accommodate multiple loads, they can either be su ...
Inventor - Hobbielektronika
... Snubber circuits have many applications in power electronics circuits such as voltage and/or current rise limiters, level clamps, EMI limiters, and damping networks. Prior art snubber circuits, to be discussed hereinbelow, control the snubbingaction under one set of circuit conditions, i.e. during s ...
... Snubber circuits have many applications in power electronics circuits such as voltage and/or current rise limiters, level clamps, EMI limiters, and damping networks. Prior art snubber circuits, to be discussed hereinbelow, control the snubbingaction under one set of circuit conditions, i.e. during s ...
PPT Digikey Coupled Inductors for SEPIC
... A buck converter regulates a high voltage into a smaller voltage, so input voltage is greater than output voltage. For example, like a car charger for a cell phone, 12V is converted down to 5V. A boost converter regulates a small voltage into a higher voltage, so input is smaller than output voltage ...
... A buck converter regulates a high voltage into a smaller voltage, so input voltage is greater than output voltage. For example, like a car charger for a cell phone, 12V is converted down to 5V. A boost converter regulates a small voltage into a higher voltage, so input is smaller than output voltage ...
Electrical substation
A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Between the generating station and consumer, electric power may flow through several substations at different voltage levels.Substations may be owned and operated by an electrical utility, or may be owned by a large industrial or commercial customer. Generally substations are unattended, relying on SCADA for remote supervision and control.A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages. The word substation comes from the days before the distribution system became a grid. As central generation stations became larger, smaller generating plants were converted to distribution stations, receiving their energy supply from a larger plant instead of using their own generators. The first substations were connected to only one power station, where the generators were housed, and were subsidiaries of that power station.