PDTech DELTAMAXX TM Digital Loss Factor/Capacitance Analyzer and
... is calculated from the partial discharge pattern, by weighting the amplitudes as a function of their repetition frequency (IEC60270:2001, Table 1). The other measurement is Qm, peak magnitude. Qm, according to IEC 60034-27, is the charge level of a repetition frequency of 10 pulses per second (pps), ...
... is calculated from the partial discharge pattern, by weighting the amplitudes as a function of their repetition frequency (IEC60270:2001, Table 1). The other measurement is Qm, peak magnitude. Qm, according to IEC 60034-27, is the charge level of a repetition frequency of 10 pulses per second (pps), ...
Electromagnetic compatibility of power converters
... saturate easily and usually do not display log-log results (dB vs. log of frequency). With its preselector and numerous simultaneous detectors, an EMI receiver may be preferred. In both case, the following features are required: ...
... saturate easily and usually do not display log-log results (dB vs. log of frequency). With its preselector and numerous simultaneous detectors, an EMI receiver may be preferred. In both case, the following features are required: ...
Fault Diagnosis on Medium Voltage (MV) Electric Power Distribution
... A fault occurs when there is a discrepancy between the reference value and the measured value for any given network parameter [5]. In this regard, the electric power network is subjected to four main types of faults: short-circuits, over voltages, overloads and line ruptures (loss of phase). A Short ...
... A fault occurs when there is a discrepancy between the reference value and the measured value for any given network parameter [5]. In this regard, the electric power network is subjected to four main types of faults: short-circuits, over voltages, overloads and line ruptures (loss of phase). A Short ...
brochure
... The “Electricity Utilities industry Law” stipulates that for 220V level, the standard voltage supplied by a power supplier shall range within ±26V from 354V to 406V. The supply voltage level will differ depending on its regional areas. In general, when there is a drop in voltage is within an accepte ...
... The “Electricity Utilities industry Law” stipulates that for 220V level, the standard voltage supplied by a power supplier shall range within ±26V from 354V to 406V. The supply voltage level will differ depending on its regional areas. In general, when there is a drop in voltage is within an accepte ...
Electromagnetic compatibility of power converters
... saturate easily and usually do not display log-log results (dB vs. log of frequency). With its preselector and numerous simultaneous detectors, an EMI receiver may be preferred. In both case, the following features are required: ...
... saturate easily and usually do not display log-log results (dB vs. log of frequency). With its preselector and numerous simultaneous detectors, an EMI receiver may be preferred. In both case, the following features are required: ...
Sorensen XPF Series 350–840 W 35–60 V 10–20 A
... The XPF Series are dual output DC power supplies with two completely independent and isolated outputs. If required, the outputs can be wired in series or parallel to achieve up to double the maximum voltage or double the maximum current. ...
... The XPF Series are dual output DC power supplies with two completely independent and isolated outputs. If required, the outputs can be wired in series or parallel to achieve up to double the maximum voltage or double the maximum current. ...
Slide 1
... • Under normal conditions, Vg = zero, Id = zero. • Channel between gate junctions is entirely open. • When Vd is applied – n-type semiconductor bar acts as resistor – current Id increases linearly with Vg • For p-channel JFET, polarities of Vg & Vd are interchanged. • As Vd is further increased – ma ...
... • Under normal conditions, Vg = zero, Id = zero. • Channel between gate junctions is entirely open. • When Vd is applied – n-type semiconductor bar acts as resistor – current Id increases linearly with Vg • For p-channel JFET, polarities of Vg & Vd are interchanged. • As Vd is further increased – ma ...
ATS48_AO Analog output assigment calculation
... ATS48 AO Analog output assigment calculation & scale ...
... ATS48 AO Analog output assigment calculation & scale ...
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... controlled rectifiers. Explain the principle of operation of this scheme and mention its advantages and disadvantages. Q2b. The converter of Figure Q2b can operate in two modes: as DC Chopper to drive a dc load, or as Single Phase Inverter to drive ac single-phase load. Explain sequence of operation ...
... controlled rectifiers. Explain the principle of operation of this scheme and mention its advantages and disadvantages. Q2b. The converter of Figure Q2b can operate in two modes: as DC Chopper to drive a dc load, or as Single Phase Inverter to drive ac single-phase load. Explain sequence of operation ...
Fast 8KV MOSFET switch stack (1991, Berkley).pdf
... Figure 2 shows a trace of the high-voltage (HV) pulse recorded with a Tektronix P6015 probe and a Tektronix 2467B 400 MHz oscilloscope.To reduce the instantaneous current and decreasethe fall time of the isolated tube, care was taken to minimize the capacitance of the tube, with a measuredcapacitanc ...
... Figure 2 shows a trace of the high-voltage (HV) pulse recorded with a Tektronix P6015 probe and a Tektronix 2467B 400 MHz oscilloscope.To reduce the instantaneous current and decreasethe fall time of the isolated tube, care was taken to minimize the capacitance of the tube, with a measuredcapacitanc ...
MOV Arresters Limit Overvoltage on 138 kV Underground
... withstand this two-per-unit 60 Hertz voltage without sparkover. This resulted in what became an unacceptably high overvoltage on the solid dielectric cable (2.1 p.u.). At least one cable fault was directly attributed to this overvoltage, and several others were aggravated by it. An obvious but not o ...
... withstand this two-per-unit 60 Hertz voltage without sparkover. This resulted in what became an unacceptably high overvoltage on the solid dielectric cable (2.1 p.u.). At least one cable fault was directly attributed to this overvoltage, and several others were aggravated by it. An obvious but not o ...
SP 300-BLUE - Lascar Electronics
... 3. COM Ground for analogue section of A/D converter. It is actively held at 3.05V (nom) below V+ and must not be allowed to sink excessive current (>100mA) by, for instance, connecting to a higher voltage. 4. IH Positive measuring input. 5. IL Negative measuring input. ...
... 3. COM Ground for analogue section of A/D converter. It is actively held at 3.05V (nom) below V+ and must not be allowed to sink excessive current (>100mA) by, for instance, connecting to a higher voltage. 4. IH Positive measuring input. 5. IL Negative measuring input. ...
OSI
... High-accuracy, split-core, current transformers are supplied with the transducers in current ranges up to 500 Amps. These transformers provide a voltage-limited secondary that eliminates the shock hazard normally associated with open-secondary leads. All transducers are self-powered from the circuit ...
... High-accuracy, split-core, current transformers are supplied with the transducers in current ranges up to 500 Amps. These transformers provide a voltage-limited secondary that eliminates the shock hazard normally associated with open-secondary leads. All transducers are self-powered from the circuit ...
(For NEMA 1 Rated Configured Drives) GENERAL
... converted to a sine-coded, variable frequency output, which provides optimum speed control of any conventional squirrel cage induction motor and permanent magnet motor. The use of IGBTs (Insulated Gate Bipolar Transistors), with a carrier frequency range of 1 kHz to 12.5 kHz, permits quiet motor ope ...
... converted to a sine-coded, variable frequency output, which provides optimum speed control of any conventional squirrel cage induction motor and permanent magnet motor. The use of IGBTs (Insulated Gate Bipolar Transistors), with a carrier frequency range of 1 kHz to 12.5 kHz, permits quiet motor ope ...
Line to Ground Voltage Monitoring on Ungrounded
... Where N is the transformer ratio and La is the saturated or air core inductance of the voltage transformer primary windings in millihenrys. La can be easily calculated from the geometry of the windings. Equation (2) may derive a lower value for “Rmax” compared to equation (1). The laymen, having to ...
... Where N is the transformer ratio and La is the saturated or air core inductance of the voltage transformer primary windings in millihenrys. La can be easily calculated from the geometry of the windings. Equation (2) may derive a lower value for “Rmax” compared to equation (1). The laymen, having to ...
Linear DC Power Supply
... The GPC-Series are triple output, 195 to 375W, linear DC power supplies. Channel 1 and 2 are fully adjustable (model dependant) and channel 3 is fixed at 5V/3A with ripple and noise at less than 2mVrms. Overload and reverse polarity protection keep GPC-Series and its loads safe from unexpected condi ...
... The GPC-Series are triple output, 195 to 375W, linear DC power supplies. Channel 1 and 2 are fully adjustable (model dependant) and channel 3 is fixed at 5V/3A with ripple and noise at less than 2mVrms. Overload and reverse polarity protection keep GPC-Series and its loads safe from unexpected condi ...
JRW 70A single output series
... The JRW-series dc-dc converters are a new generation of DC/DC power modules designed for optimum efficiency and power density. The JRW provides up to 70A output current in an industry standard half brick, which makes it an ideal choice for small space, high current and low voltage applications. The ...
... The JRW-series dc-dc converters are a new generation of DC/DC power modules designed for optimum efficiency and power density. The JRW provides up to 70A output current in an industry standard half brick, which makes it an ideal choice for small space, high current and low voltage applications. The ...
Document
... PV panels is too low to be useful in grid-tied applications. A common solution to this problem involves connecting the panels in a series string configuration. This approach, however, has shortcomings. ...
... PV panels is too low to be useful in grid-tied applications. A common solution to this problem involves connecting the panels in a series string configuration. This approach, however, has shortcomings. ...
monitoring of 24 V DC load circuits
... plant failures and to minimize partial failures to a very short period of time. Remote reset, manual activation and deactivation as well as sequential switching on of individual 24 V DC branches are additional benefits. ...
... plant failures and to minimize partial failures to a very short period of time. Remote reset, manual activation and deactivation as well as sequential switching on of individual 24 V DC branches are additional benefits. ...
Three-phase electric power
Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase or two-phase system at the same line to ground voltage because it uses less conductor material to transmit electrical power.The three-phase system was independently invented by Galileo Ferraris, Mikhail Dolivo-Dobrovolsky, Jonas Wenström and Nikola Tesla in the late 1880s.