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Liebert RDC™ Remote Distribution Cabinet
Liebert RDC™ Remote Distribution Cabinet

TPS Process Manager I/O Specification and Technical Data
TPS Process Manager I/O Specification and Technical Data

... They perform engineering unit conversion, including fifth-order polynomial temperature input characterization, if the high level processor receives these inputs from mV/I converters. Through use of a dual processor design and custom integrated circuits, the low level analog input processor supports ...
NBSG16M - 2.5 V/3.3 V Multilevel Input to CML Clock/Data Receiver
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... LVCMOS, CML, or LVDS. The CML output structure contains internal 50 W source termination resistor to VCC. The device generates 400 mV output amplitude with 50 W receiver resistor to VCC. The VBB pin is internally generated voltage supply available to this device only. For all single-ended input cond ...
Crompton Instruments Protector Trip Relays
Crompton Instruments Protector Trip Relays

... RS232 to RS485 Serial Converter Allows direct connection from the SPR system protection relay to SCADA or PC based systems. ...
Table of Contents HARTMAN Power Switching Contactors
Table of Contents HARTMAN Power Switching Contactors

Electrical Design for Roadside Devices
Electrical Design for Roadside Devices

... Voltage drop ................................................................................................................ 11 ...
Web Tension Basics - Webconvert-ltd
Web Tension Basics - Webconvert-ltd

... A simpler kind of tension controller does not have feedback to know if the desired tension was reached. These systems generally reduce the air pressure as the roll diameter gets smaller. They simply measure the roll diameter with an Ultrasonic Sensor or with a following arm that rides on the roll. T ...
CHAPTER 8 ELECTRIC POWER  APR1400
CHAPTER 8 ELECTRIC POWER APR1400

... The switchyard is connected to the main transformer (MT) by a normal preferred power circuit. The main generator (MG) is connected to the low-voltage winding of the MT and the high-voltage winding of the unit auxiliary transformers (UATs) through the generator circuit breaker (GCB). Under the normal ...
Laboratory Exercise 4 The Solenoid (two weeks – 200 pts)
Laboratory Exercise 4 The Solenoid (two weeks – 200 pts)

... Both types, linear and rotational are available as either a holding (continuously energized) or as a latching type (ON-OFF pulse) with the latching types being used in either energized or power-off applications. Linear solenoids can also be designed for proportional motion control were the plunger p ...
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Cable System Transient Study

Old Company Name in Catalogs and Other Documents
Old Company Name in Catalogs and Other Documents

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Encoder Basics

... Programmable options for SSI encoders to program the resolution. All field bus encoders are programmable over their ...
DC MachinesPPT1 - Electrical and Computer Engineering
DC MachinesPPT1 - Electrical and Computer Engineering

... torque is 10 N· m. What would the new steady-state speed be? How much power is supplied to the shaft of the machine? How much power is being supplied by the battery? Is this machine a motor or a generator? d) Suppose the machine is again unloaded, and a torque of 7.5 N • m is applied to the shaft in ...
S280-79-2
S280-79-2

... database, “untitled”, is opened. This should be the only database that is ever open when communication with a control is initiated. When communication is established, the Form 5 sends and overwrites the hardware settings in the open database. This automatically modifies the software options to confo ...
TPE2 (D), TPE3 (D)
TPE2 (D), TPE3 (D)

... The ability to push current out of the terminal and into an external load which must return it to GND. ...
LTM4601A/LTM4601A-1 - 12A DC/DC uModules with PLL, Output Tracking and Margining
LTM4601A/LTM4601A-1 - 12A DC/DC uModules with PLL, Output Tracking and Margining

... above 2V and below INTVCC. See the Applications Information section. TRACK/SS (Pin A9): Output Voltage Tracking and SoftStart Pin. When the module is configured as a master output, then a soft-start capacitor is placed on this pin to ground to control the master ramp rate. A soft-start capacitor can ...
Protection Relays Guide 2012
Protection Relays Guide 2012

lecture1423723756
lecture1423723756

... utilization points with both reliability and economically The capital investment involved in power system for the generation, transmission and distribution is so great that the proper precautions must be taken to ensure that the equipment not only operates as nearly as possible to peak efficiency, b ...
SECTION – III STEP UP SUBSTATION
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... Selection of basic Impulse Insulation Level (BIL) up to 220 kV System: Equipment insulation must withstand temporary over voltages and protected against lightning by suitable lightning arrestor. The basic impulse insulation level should be selected which can be protected with a suitable lightning pr ...
S280-79-4
S280-79-4

... provides uninterrupted communication to the RS-232 or Fiber-Optic accessory, and is not affected by any other port or physical connection. Figure 3 illustrates the communication configuration for serial ports1, 2, and 3. In a single fiber-optic or RS-232 installation, the appropriate accessory can b ...
L-Series Integrated Speed Control
L-Series Integrated Speed Control

... personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. DANGER—Indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING—Indicates a hazardous situation which, if not avoided, could result in death or s ...
Reference Guide The Open Distribution System Simulator
Reference Guide The Open Distribution System Simulator

... Neither the name of the Electric Power Research Institute, Inc., nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY Electric Power Research Institute, Inc., "AS IS" ...
Liebert® eXL - Emerson Network Power
Liebert® eXL - Emerson Network Power

... This UPS has several circuits that are energized with high DC as well as AC voltages. Check for voltage with both AC and DC voltmeters before working within the UPS. Check for voltage with both AC and DC voltmeters before making contact. Only properly trained and qualified personnel wearing appropri ...
VS-VSKD600 Series
VS-VSKD600 Series

... Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use ...
Specification Number: 16443-2
Specification Number: 16443-2

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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.
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