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FlexBar HRT Pressure Transmitter
FlexBar HRT Pressure Transmitter

... The transmitter must not be exposed to pressure or surge exceeding gland. For models having a plug for electrical connection the inner part 4 x span, max. 600 bar though. of the plug must be oriented in a way so that the opening is turning downwards (Fig4). The freezing point of process media and co ...
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... Determining the Short Circuit Duties of Breakers Considering an industrial scenario where there is no in-plant power generation, the total three phase fault current at the faulted point includes both currents from the power source (electric utility) and the fault contribution from electric motors (b ...
International Electrical Engineering Journal (IEEJ) Vol. 6 (2015) No.2, pp. 1756-1764
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LIEBERT TRANSIENT VOLTAGE SURGE SUPPRESSOR
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... respect to the earth, the SPD diverts the surge current to the grounding electrode (earth connection). However, for most transient surges that are developed by switching loads, the SPD diverts the surge current back to its source without involving the grounding electrode. For proper SPD performance, ...
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... decades, power industries have proved that the adverse impacts on the PQ can be mitigated or avoided by conventional means, and that techniques using fast controlled force commutated power electronics (PE) are even more effective. PQ compensators can be categorized into two main types. One is shunt ...


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AN2118
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Operating instructions - ACS-Control

... understood this technical manual and especially the safety notes. Installation, electrical connection, inauguration and operation of the device must be made by a qualified employee according to the informations in this technical manual and the relevant standards and rules. The device may only be use ...
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... personnel, residual current operated circuit breakers are seeing increased use in electrical installations. These, however, often trip unnecessarily due to leakage currents caused by electrical systems. The results are machine downtime and costs that can otherwise be prevented with design considerat ...
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... ground wire and feedline shield currents were measured, using an MFJ-854 RF Current Meter, and the reduction in feedline shield current was confirmed. Ten beads would do a much better job. The ferrite beads were then placed over the feedline near the Isotron and there was very little reduction in fe ...
ACS756 - Allegro Microsystems
ACS756 - Allegro Microsystems

... The Allegro ACS756 family of current sensor ICs provides economical and precise solutions for AC or DC current sensing in industrial, automotive, commercial, and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, loa ...
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Ground (electricity)



In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.Electrical circuits may be connected to ground (earth) for several reasons. In mains powered equipment, exposed metal parts are connected to ground to prevent user contact with dangerous voltage if electrical insulation fails. Connections to ground limit the build-up of static electricity when handling flammable products or electrostatic-sensitive devices. In some telegraph and power transmission circuits, the earth itself can be used as one conductor of the circuit, saving the cost of installing a separate return conductor (see single-wire earth return).For measurement purposes, the Earth serves as a (reasonably) constant potential reference against which other potentials can be measured. An electrical ground system should have an appropriate current-carrying capability to serve as an adequate zero-voltage reference level. In electronic circuit theory, a ""ground"" is usually idealized as an infinite source or sink for charge, which can absorb an unlimited amount of current without changing its potential. Where a real ground connection has a significant resistance, the approximation of zero potential is no longer valid. Stray voltages or earth potential rise effects will occur, which may create noise in signals or if large enough will produce an electric shock hazard.The use of the term ground (or earth) is so common in electrical and electronics applications that circuits in portable electronic devices such as cell phones and media players as well as circuits in vehicles may be spoken of as having a ""ground"" connection without any actual connection to the Earth, despite ""common"" being a more appropriate term for such a connection. This is usually a large conductor attached to one side of the power supply (such as the ""ground plane"" on a printed circuit board) which serves as the common return path for current from many different components in the circuit.
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