MX Series data sheet - AMETEK Programmable Power
... the phase relationship between the AC input voltage and current in order to feed power back onto the utility grid. This mode of operation is particularly useful when testing grid-tied products that feed energy back onto the grid. Static Power Converters such as grid-tied and off-grid photovoltaic in ...
... the phase relationship between the AC input voltage and current in order to feed power back onto the utility grid. This mode of operation is particularly useful when testing grid-tied products that feed energy back onto the grid. Static Power Converters such as grid-tied and off-grid photovoltaic in ...
A Review Paper on Icing and Methods to De
... In some conditions, many 220kV or 110kV transmission lines only require less than 25Mvar power source while deicing. Under the worst hazardous condition, it is even harder to get the de-icing power from the ac substation. Therefore, the mobile dc power supply deicer is needed. This deicer obtains th ...
... In some conditions, many 220kV or 110kV transmission lines only require less than 25Mvar power source while deicing. Under the worst hazardous condition, it is even harder to get the de-icing power from the ac substation. Therefore, the mobile dc power supply deicer is needed. This deicer obtains th ...
AN ALTERNATIVE CONFIGURATION FOR DIGITALLY CONTROLLED PARALLEL CONNECTED DC–DC POWER CONVERTERS
... to the research or development of digitally controlled parallel connected DC–DC power converters. In fact, the authors have found only few works [3], [4], reporting in their attempts to run digitally controlled DC–DC power converters in parallel. Even so, the controller used is a centralized digital ...
... to the research or development of digitally controlled parallel connected DC–DC power converters. In fact, the authors have found only few works [3], [4], reporting in their attempts to run digitally controlled DC–DC power converters in parallel. Even so, the controller used is a centralized digital ...
electrical engineering practice lab manual
... 4. Weat rubber-soled shoes. (To insulate you from earth so that even if you accidentally contact a live point, current will not flow through your body to earth and hence you will be protected from electrical shock) 5. Wear laboratory-coat and avoid loose clothing. (Loose clothing may get caught on a ...
... 4. Weat rubber-soled shoes. (To insulate you from earth so that even if you accidentally contact a live point, current will not flow through your body to earth and hence you will be protected from electrical shock) 5. Wear laboratory-coat and avoid loose clothing. (Loose clothing may get caught on a ...
40 V to 400 V Uni-directional Current/Voltage/Power Monitoring
... load shorts to ground vs. sensing on the low-side. Often sensing load currents at bus voltages greater than 40 volts is needed. The INA226 from Texas Instruments cannot exceed a bus supply voltage of 36V. To that end, this design explores one possible solution for achieving current sensing at bus vo ...
... load shorts to ground vs. sensing on the low-side. Often sensing load currents at bus voltages greater than 40 volts is needed. The INA226 from Texas Instruments cannot exceed a bus supply voltage of 36V. To that end, this design explores one possible solution for achieving current sensing at bus vo ...
AN-42036 PCB Grounding System and FAN2001/FAN2011 High Performance DC-DC Converters Introduction
... If a ground connection carries substantial current, a voltage drop will develop in the ground because of the basic resistance of the ground material. This voltage drop makes local ground different than zero volts, depending on circuit topology and element location. If the current is high and if ther ...
... If a ground connection carries substantial current, a voltage drop will develop in the ground because of the basic resistance of the ground material. This voltage drop makes local ground different than zero volts, depending on circuit topology and element location. If the current is high and if ther ...
PowerMonitor 5000 - The Next Generation
... resetting of the energy counters, there is a configuration lock switch on the device. When this switch is activated, all configuration and metering data is available from the monitor, but none of the configuration data that affects metering or none of the energy counters can be altered. In addition ...
... resetting of the energy counters, there is a configuration lock switch on the device. When this switch is activated, all configuration and metering data is available from the monitor, but none of the configuration data that affects metering or none of the energy counters can be altered. In addition ...
Resistors High Voltage - TT Electronics/Welwyn | DigiKey
... This can just be achieved with a bleed value of 2M7, but to allow for a 5% tolerance, 2M2 is a better choice. With this the maximum time to discharge is 8.3s and the power dissipation at full voltage is 0.45W. A suitable solution is VRW37-2M2J, rated at 0.5W and 3.5kV. ...
... This can just be achieved with a bleed value of 2M7, but to allow for a 5% tolerance, 2M2 is a better choice. With this the maximum time to discharge is 8.3s and the power dissipation at full voltage is 0.45W. A suitable solution is VRW37-2M2J, rated at 0.5W and 3.5kV. ...
Eyeball Indicator
... operating state of a device and indication of the fault position in addition to the ON and OFF positions. Eyeball indicators are particularly suitable for monitoring bus bars and line disconnectors in complex transformer substations which are represented in the form of a mimic diagram of relatively ...
... operating state of a device and indication of the fault position in addition to the ON and OFF positions. Eyeball indicators are particularly suitable for monitoring bus bars and line disconnectors in complex transformer substations which are represented in the form of a mimic diagram of relatively ...
Troubleshooting LED Downlights
... A common problem with LED dimming is the inadvertent overloading of the LED driver. LED drivers are rated for a maximum load (measured in volts, amps and/or watts) that must not be exceeded. The number of lamps that can be installed on a single-phase control dimmer may seem to be an easy calculation ...
... A common problem with LED dimming is the inadvertent overloading of the LED driver. LED drivers are rated for a maximum load (measured in volts, amps and/or watts) that must not be exceeded. The number of lamps that can be installed on a single-phase control dimmer may seem to be an easy calculation ...
Designing a low cost power supply using a - All
... charge of the output capacitor, before the Vdd cap falls below 9 V. This can be seen on Figure 8 and Figure 9. The value of the capacitor is therefore chosen to accommodate the start up time. During a short circuit, the Vdd cap discharges below the minim value enabling the internal high voltage curr ...
... charge of the output capacitor, before the Vdd cap falls below 9 V. This can be seen on Figure 8 and Figure 9. The value of the capacitor is therefore chosen to accommodate the start up time. During a short circuit, the Vdd cap discharges below the minim value enabling the internal high voltage curr ...
A Novel Out-of-Step Protection Algorithm Based on Wide Area
... studies. Two alternatives are available for choosing the duration of a short circuit fault. The first alternative is load switching which is a minor disturbance in the system. The next alternative is three-phase faults in which the faulted line is disconnected after 400~800ms. ...
... studies. Two alternatives are available for choosing the duration of a short circuit fault. The first alternative is load switching which is a minor disturbance in the system. The next alternative is three-phase faults in which the faulted line is disconnected after 400~800ms. ...
Transformers, Harmonic Currents and Phase Shifting
... The power supply of four computer rooms at Algonquin College is divided between two distribution panels. Power measurements were taken while a 75kVA low Z transformer was installed to supply the two panels. These readings are shown in Table 1 (next page). This transformer was replaced with another o ...
... The power supply of four computer rooms at Algonquin College is divided between two distribution panels. Power measurements were taken while a 75kVA low Z transformer was installed to supply the two panels. These readings are shown in Table 1 (next page). This transformer was replaced with another o ...
section 26 05 34 - low voltage raceways
... buildings, the National Electric Code shall be followed with the following exceptions: 1. Existing Raceways: The first choice for installation of low voltage circuits for other than fire alarms and emergency lighting shall be to meet the requirements for new buildings. Existing raceways, except as i ...
... buildings, the National Electric Code shall be followed with the following exceptions: 1. Existing Raceways: The first choice for installation of low voltage circuits for other than fire alarms and emergency lighting shall be to meet the requirements for new buildings. Existing raceways, except as i ...
VARIABLE FREQUENCY DRIVE
... requirement. Power factor correction capacitors can be added to reduce the reactive current measured upstream of the capacitors and increase the measured power factor. To prevent damage to the motor, power factor correction capacitors should not exceed the motor manufacturer’s recommendations. In mo ...
... requirement. Power factor correction capacitors can be added to reduce the reactive current measured upstream of the capacitors and increase the measured power factor. To prevent damage to the motor, power factor correction capacitors should not exceed the motor manufacturer’s recommendations. In mo ...
RF3285 DUAL-BAND GSM850/PCS1900 TRANSMIT MODULE Features
... The RF3285 is a high-power, high-efficiency, transmit module (TXM) with fully-integrated power control functionality, harmonic filtering, band selectivity, and TX/RX switching. The TXM is self-contained, with 50 I/O terminals with two RX ports allowing true dual-band operation. The power control fu ...
... The RF3285 is a high-power, high-efficiency, transmit module (TXM) with fully-integrated power control functionality, harmonic filtering, band selectivity, and TX/RX switching. The TXM is self-contained, with 50 I/O terminals with two RX ports allowing true dual-band operation. The power control fu ...
Designing 4 to 20 mA Current Loops
... While ANSI/ISA-50.1-1982 (R1992) Compatibility of Analog Signal for Electronic Industrial Process Instruments says that the load resistor shall be 250Ω, resistor values of 50Ω to 1,000Ω may be used. To properly design a current loop you must know the value of the controller’s resistor. ...
... While ANSI/ISA-50.1-1982 (R1992) Compatibility of Analog Signal for Electronic Industrial Process Instruments says that the load resistor shall be 250Ω, resistor values of 50Ω to 1,000Ω may be used. To properly design a current loop you must know the value of the controller’s resistor. ...
DS2478 PWM valve driver
... INTERNAL REFERENCE VOLTAGE: A nominal +5 volts DC is available at tab "H" for powering external loads. The maximum output current from this supply must be limited to 10 ma. PULSE WIDTH MODULATED SWITCHING FREQUENCY: The switching frequency is specified by the number inserted at suffix D. Standard sw ...
... INTERNAL REFERENCE VOLTAGE: A nominal +5 volts DC is available at tab "H" for powering external loads. The maximum output current from this supply must be limited to 10 ma. PULSE WIDTH MODULATED SWITCHING FREQUENCY: The switching frequency is specified by the number inserted at suffix D. Standard sw ...
Power module PM-E DC24V (6ES7138-4CA01-0AA0)
... Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installa ...
... Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installa ...
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.