Section #25 30 03 - EMCS: Variable Frequency Drives (to 600 Volts)
... over-voltage, under-voltage, or loss of input signal protective trip. The number of restart attempts, trial time, and time between attempts shall be programmable. The VFD shall have an integral 5% impedance reactor to reduce the harmonics to the power line and to add protection from AC line transien ...
... over-voltage, under-voltage, or loss of input signal protective trip. The number of restart attempts, trial time, and time between attempts shall be programmable. The VFD shall have an integral 5% impedance reactor to reduce the harmonics to the power line and to add protection from AC line transien ...
Synchronous close capacitor bank switching made easy
... • Long life vacuum interrupter with solid-dielectric insulation for maintenance-free switching • Eliminate the material cost and space required for inrush reactors • Mitigate harmonics and switching disturbances that occur in back-to-back capacitor bank switching and large power capacitor bank sw ...
... • Long life vacuum interrupter with solid-dielectric insulation for maintenance-free switching • Eliminate the material cost and space required for inrush reactors • Mitigate harmonics and switching disturbances that occur in back-to-back capacitor bank switching and large power capacitor bank sw ...
Switching losses and snubber circuit
... Finite current conduction capability with small forward voltage drop ...
... Finite current conduction capability with small forward voltage drop ...
MAX8857A Smallest, All-Internal MOSFET, 7-Channel 2 AA DSC PMIC General Description
... The MAX8857A PMIC provides a complete power-supply solution for digital still cameras (DSCs) and digital video cameras (DVCs). The MAX8857A improves performance, component count, and board space utilization compared to currently available solutions for 2 AA cell and dual-battery designs. On-chip pow ...
... The MAX8857A PMIC provides a complete power-supply solution for digital still cameras (DSCs) and digital video cameras (DVCs). The MAX8857A improves performance, component count, and board space utilization compared to currently available solutions for 2 AA cell and dual-battery designs. On-chip pow ...
EVBUM2049/D - 1476.0 KB
... but this is at the cost of a limited current distortion. If superior power factor is needed, forcing a minimum 0.75 V voltage on the “FFcontrol” pin inhibits this function. Refer to the data sheet for a detailed explanation of the CCFF operation and of its implementation in the NCP1611 [3]. ...
... but this is at the cost of a limited current distortion. If superior power factor is needed, forcing a minimum 0.75 V voltage on the “FFcontrol” pin inhibits this function. Refer to the data sheet for a detailed explanation of the CCFF operation and of its implementation in the NCP1611 [3]. ...
Low-voltage pipelined ADC using OPAMP
... power-supply voltage, limited primarily by the thin gate oxide that is prone to voltage stress reliability and breakdown. One circuit type directly affected by this low-voltage problem is the switched-capacitor circuit, used in many practical analog signal processing applications including data conv ...
... power-supply voltage, limited primarily by the thin gate oxide that is prone to voltage stress reliability and breakdown. One circuit type directly affected by this low-voltage problem is the switched-capacitor circuit, used in many practical analog signal processing applications including data conv ...
Class26
... I I com Mh 2 •It is essential that these axes are parallel; as you can see from table 10-2, the moments of inertia can be different for different axes. ...
... I I com Mh 2 •It is essential that these axes are parallel; as you can see from table 10-2, the moments of inertia can be different for different axes. ...
MP830
... for 3 phase AC induction motor systems. The unit is a phase angle, current sensing and voltage sensing relay, that can automatically set up trip points within specified limits around the normal operating conditions of a particular motor system. An adjustable restart timer, triggered by an underload ...
... for 3 phase AC induction motor systems. The unit is a phase angle, current sensing and voltage sensing relay, that can automatically set up trip points within specified limits around the normal operating conditions of a particular motor system. An adjustable restart timer, triggered by an underload ...
GZ2512721277
... DC-DC conversion are there to reduce component stresses and switching losses while achieving high power density and improved performance. Among them, the full-bridge (FB) zero-voltage-switched (ZVS) converter is one of the most attractive techniques which are shown in Fig. 1. It is the most widely u ...
... DC-DC conversion are there to reduce component stresses and switching losses while achieving high power density and improved performance. Among them, the full-bridge (FB) zero-voltage-switched (ZVS) converter is one of the most attractive techniques which are shown in Fig. 1. It is the most widely u ...
7. Autoranging Rectifier Module (ARM)
... The ARM maintains the DC output bus voltage between 200 and 375 Vdc over the entire universal input range, this being compatible with the Maxi, Mini, Micro 300 V input converters as well as VI-260 family and VI-J60 family DC-DC converters. The ARM automatically switches to the proper rectification m ...
... The ARM maintains the DC output bus voltage between 200 and 375 Vdc over the entire universal input range, this being compatible with the Maxi, Mini, Micro 300 V input converters as well as VI-260 family and VI-J60 family DC-DC converters. The ARM automatically switches to the proper rectification m ...
7B32 数据手册DataSheet 下载
... The 7B Series of signal conditioners feature small size, low cost and a wide output voltage range for a variety of applications including process control and factory-floor environments. The single-channel 7B modules accept inputs from a range of transducers and are fully rated over the extended -40o ...
... The 7B Series of signal conditioners feature small size, low cost and a wide output voltage range for a variety of applications including process control and factory-floor environments. The single-channel 7B modules accept inputs from a range of transducers and are fully rated over the extended -40o ...
Optimal design of switched reluctance motors
... high power factors and low excitation losses and, therefore, do not need magnets. In any case, a large permanent-magnet rotor is usually too costly above a certain power level—for example, 25 kW. In high-speed machines, the fixed excitation produced by permanent magnets can produce a high no-load co ...
... high power factors and low excitation losses and, therefore, do not need magnets. In any case, a large permanent-magnet rotor is usually too costly above a certain power level—for example, 25 kW. In high-speed machines, the fixed excitation produced by permanent magnets can produce a high no-load co ...
Owner`s Manual - SpeakEasy Pedals
... centered) is adjusted for the most transparent response with the Voice switch set to “Sip” and the Gain control centered. It is best to adjust this trimpot after you’ve found your favorite settings of the front-panel controls. SpeakEasy pedals are designed and hand built in the USA and carry a one-y ...
... centered) is adjusted for the most transparent response with the Voice switch set to “Sip” and the Gain control centered. It is best to adjust this trimpot after you’ve found your favorite settings of the front-panel controls. SpeakEasy pedals are designed and hand built in the USA and carry a one-y ...
Owners Manual - Newport Vessels
... continually developed over a number of years. There is a wide range of Newport Vessels outboard motors, from 32lbs through to 86lbs to suit every customer’s requirements and application. Please read and retain this manual before using this electrical motor. This manual contains information that desc ...
... continually developed over a number of years. There is a wide range of Newport Vessels outboard motors, from 32lbs through to 86lbs to suit every customer’s requirements and application. Please read and retain this manual before using this electrical motor. This manual contains information that desc ...
SS8050 NPN Epitaxial Silicon Transistor
... 1. Life support devices or systems are devices or 2. A critical component is any component of a life support device or system whose failure to perform can systems which, (a) are intended for surgical implant into be reasonably expected to cause the failure of the life the body, or (b) support or sus ...
... 1. Life support devices or systems are devices or 2. A critical component is any component of a life support device or system whose failure to perform can systems which, (a) are intended for surgical implant into be reasonably expected to cause the failure of the life the body, or (b) support or sus ...
Product Data: CCLD Laser Tacho Probe — MM
... the test object to which a small strip of self-adhesive reflective tape has been attached. The retroreflective tape backscatters the laser energy to the receiver. Backscattering of the light means that the probe can be more than 30 from perpendicular to the ...
... the test object to which a small strip of self-adhesive reflective tape has been attached. The retroreflective tape backscatters the laser energy to the receiver. Backscattering of the light means that the probe can be more than 30 from perpendicular to the ...
Complete PDF Edition (3,509 KB)
... that can adapt to various active power and reactive power levels. Mitsubishi Electric pioneered use of solid-state self-commutated converters in power transmission trunks in 1991 with static var generator(*1) (SVG) products for power system stabilization. More recently the company has produced sever ...
... that can adapt to various active power and reactive power levels. Mitsubishi Electric pioneered use of solid-state self-commutated converters in power transmission trunks in 1991 with static var generator(*1) (SVG) products for power system stabilization. More recently the company has produced sever ...
Variable-frequency drive
A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.