18-Pulse, Air-Cooled - Rockwell Automation
... 3300V, 4160V or 6600V at 50/60 Hz with ±10% voltage tolerance. B. The VFD shall operate on an externally supplied control voltage of 480V, three-phase 50/60 Hz (20A). C. The VFD shall have a power rating that matches the driven load as shown on the electrical drawings. The VFD supplier shall coordin ...
... 3300V, 4160V or 6600V at 50/60 Hz with ±10% voltage tolerance. B. The VFD shall operate on an externally supplied control voltage of 480V, three-phase 50/60 Hz (20A). C. The VFD shall have a power rating that matches the driven load as shown on the electrical drawings. The VFD supplier shall coordin ...
PowerFlex 7000 Medium Voltage AC Drive, 18-Pulse Air
... 3300V, 4160V or 6600V at 50/60 Hz with ±10% voltage tolerance. B. The VFD shall operate on an externally supplied control voltage of 480V, three-phase 50/60 Hz (20A). C. The VFD shall have a power rating that matches the driven load as shown on the electrical drawings. The VFD supplier shall coordin ...
... 3300V, 4160V or 6600V at 50/60 Hz with ±10% voltage tolerance. B. The VFD shall operate on an externally supplied control voltage of 480V, three-phase 50/60 Hz (20A). C. The VFD shall have a power rating that matches the driven load as shown on the electrical drawings. The VFD supplier shall coordin ...
ARCAT spec 262600 2009-9-15
... IEC – 61800-5 AC Drives Standard ANSI – Instrument Transformers C57.13 IEEE & EEMAC – Guide for Harmonic Control and Reactive Compensation of Static ...
... IEC – 61800-5 AC Drives Standard ANSI – Instrument Transformers C57.13 IEEE & EEMAC – Guide for Harmonic Control and Reactive Compensation of Static ...
ARCAT spec 262600 2009-9-15
... IEC – 61800-5 AC Drives Standard ANSI – Instrument Transformers C57.13 IEEE & EEMAC – Guide for Harmonic Control and Reactive Compensation of Static ...
... IEC – 61800-5 AC Drives Standard ANSI – Instrument Transformers C57.13 IEEE & EEMAC – Guide for Harmonic Control and Reactive Compensation of Static ...
Option Panel
... This bypass consists of motor starter circuitry used in bypass, a bypass contactor (M3) interlocked with a drive output contactor (M2) mounted in the bypass enclosure. For the electromechanical bypass (EMB), an enclosuremounted Drive/OFF/Bypass selector is used to electrically select whether the mot ...
... This bypass consists of motor starter circuitry used in bypass, a bypass contactor (M3) interlocked with a drive output contactor (M2) mounted in the bypass enclosure. For the electromechanical bypass (EMB), an enclosuremounted Drive/OFF/Bypass selector is used to electrically select whether the mot ...
Contents - Center for Occupational Research and Development
... Use electrical test equipment. Perform measurement of current using the ammeter/clamp-on. Perform measurement of voltage using the voltmeter. Perform measurement of resistance using the ohmmeter. Measure circuit properties using the volt-ohm-multimeter (VOM). Measure power using the wattmeter. Expla ...
... Use electrical test equipment. Perform measurement of current using the ammeter/clamp-on. Perform measurement of voltage using the voltmeter. Perform measurement of resistance using the ohmmeter. Measure circuit properties using the volt-ohm-multimeter (VOM). Measure power using the wattmeter. Expla ...
Characterictics Program CurveSelect
... and the times for which the currents are flowing. The tripping characteristic indicates the behaviour of a circuit-breaker under operational as well as under exceptional conditions. Constructive features of the circuit-breaker can have an influence on the specific tripping characteristic. The trippi ...
... and the times for which the currents are flowing. The tripping characteristic indicates the behaviour of a circuit-breaker under operational as well as under exceptional conditions. Constructive features of the circuit-breaker can have an influence on the specific tripping characteristic. The trippi ...
E2 Subject1
... Potential Relays in Operation • The normally closed contacts allow full voltage to the start winding • The relay coil is energized • The contacts open • Back EMF keeps the coil energized, which keeps the contacts open ...
... Potential Relays in Operation • The normally closed contacts allow full voltage to the start winding • The relay coil is energized • The contacts open • Back EMF keeps the coil energized, which keeps the contacts open ...
Modeling of Eddy-Current Loss of Electrical Machines and Transformers
... renewable energy systems with the utility grid, or to be used as power factor correction devices. Pulsewidth modulation (PWM) voltage control is widely utilized in modern power converters. The high-frequency harmonics in the output voltage induce additional losses in the electric machines or transfo ...
... renewable energy systems with the utility grid, or to be used as power factor correction devices. Pulsewidth modulation (PWM) voltage control is widely utilized in modern power converters. The high-frequency harmonics in the output voltage induce additional losses in the electric machines or transfo ...
September 14,201 0 NRC 201 0-0093 10 CFR 50.90
... For PBNP Unit 2, calculations were performed to address the new loading on MCC 28-41 and MCC 8-22. The calculation showed that for MCC 2B-41, the existing cables were capable of supplying the load current. For MCC 8-22, new cables have been installed and are capable of supplying the load current of ...
... For PBNP Unit 2, calculations were performed to address the new loading on MCC 28-41 and MCC 8-22. The calculation showed that for MCC 2B-41, the existing cables were capable of supplying the load current. For MCC 8-22, new cables have been installed and are capable of supplying the load current of ...
PowerFlex 755 - Rockwell Automation
... Systems rated at Normal Duty loads shall provide 110% overload capability for up to one minute and 150% for up to 3 seconds. Systems rated at Heavy Duty loads shall provide 150% overload capability for up to one minute and 180% for up to 3 seconds. Systems rated at Light Duty loads (Frames 8 to 10) ...
... Systems rated at Normal Duty loads shall provide 110% overload capability for up to one minute and 150% for up to 3 seconds. Systems rated at Heavy Duty loads shall provide 150% overload capability for up to one minute and 180% for up to 3 seconds. Systems rated at Light Duty loads (Frames 8 to 10) ...
ElectroCity (Grades 4-5)
... either way, but it will turn in opposite directions depending on which way it is connected to the battery. 8. A control tells a circuit what to do. The most common kind of control is a switch, which is needed to turn a circuit OFF, so it is not constantly ON. A switch works by breaking the flow of e ...
... either way, but it will turn in opposite directions depending on which way it is connected to the battery. 8. A control tells a circuit what to do. The most common kind of control is a switch, which is needed to turn a circuit OFF, so it is not constantly ON. A switch works by breaking the flow of e ...
2 1 3 4 5 6 7 8 9 10 2 1 3 4 5 6 7 8 9 10 Variable speed
... Altivar 312 drives, apart from ATV 312HpppM3 and ATV312HpppS6, have integrated radio interference input filters to comply with the EMC standard for variable speed electrical power drive “products” IEC 61800-3, categories C2 or C3, and to comply with the European EMC (electromagnetic compatibility) d ...
... Altivar 312 drives, apart from ATV 312HpppM3 and ATV312HpppS6, have integrated radio interference input filters to comply with the EMC standard for variable speed electrical power drive “products” IEC 61800-3, categories C2 or C3, and to comply with the European EMC (electromagnetic compatibility) d ...
Induction motor
An induction or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in universal, DC and large synchronous motors. An induction motor's rotor can be either wound type or squirrel-cage type.Three-phase squirrel-cage induction motors are widely used in industrial drives because they are rugged, reliable and economical. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFDs) in variable-speed service. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torque centrifugal fan, pump and compressor load applications. Squirrel cage induction motors are very widely used in both fixed-speed and variable-frequency drive (VFD) applications. Variable voltage and variable frequency drives are also used in variable-speed service.