KFE10008-E
... Recloser tripping and closing are initiated by signals from the electronic control. When fault currents in excess of the programmed minimum-trip value are detected in one or more phases, a signal from the control actuates a low energy tripper in the operating mechanism of the recloser to trip the op ...
... Recloser tripping and closing are initiated by signals from the electronic control. When fault currents in excess of the programmed minimum-trip value are detected in one or more phases, a signal from the control actuates a low energy tripper in the operating mechanism of the recloser to trip the op ...
Hardware Design Guidelines for TMS320F28xx
... The F28x devices offer two options for clock generation: using an onboard crystal oscillator or feeding the external clock to the XCLKIN pin. The frequency of this basic input clock, using an internal oscillator, is in the range of 20 MHz – 35 MHz. The on-chip phase-locked loop (PLL) can be set to m ...
... The F28x devices offer two options for clock generation: using an onboard crystal oscillator or feeding the external clock to the XCLKIN pin. The frequency of this basic input clock, using an internal oscillator, is in the range of 20 MHz – 35 MHz. The on-chip phase-locked loop (PLL) can be set to m ...
Unit 57: Principles and Applications of Analogue Electronics
... Assessment of P2 could build on the learner’s work with transistor amplifiers by considering and describing two different classes of amplifier (eg class A and class B). The amplifiers described for P2 could then be used for P3, although the choice of amplifiers must ensure that between them, the lea ...
... Assessment of P2 could build on the learner’s work with transistor amplifiers by considering and describing two different classes of amplifier (eg class A and class B). The amplifiers described for P2 could then be used for P3, although the choice of amplifiers must ensure that between them, the lea ...
Technical recommendation for the purchase of EAVC for HV systems
... enabled the purchase of the various Enhanced Automatic Voltage Control schemes applied on the Northern Powergrid High Voltage power distribution networks that were trialled on the Customer-Led ...
... enabled the purchase of the various Enhanced Automatic Voltage Control schemes applied on the Northern Powergrid High Voltage power distribution networks that were trialled on the Customer-Led ...
MEDIUM-VOLTAGE SWITCHGEAR
... available short circuit currents. 4. The bus and bus compartment shall be designed and tested so that the acceptable NEMA, ANSI, UL, and CSA standard temperature rises are not exceeded. ...
... available short circuit currents. 4. The bus and bus compartment shall be designed and tested so that the acceptable NEMA, ANSI, UL, and CSA standard temperature rises are not exceeded. ...
ABB drives in chemical, oil and gas
... Converter transformers are available for nearly all ratings and primary voltages of more than 100 kV. Secondary voltages are optimized to match the converter and motor voltage. Oil or dry types for indoor or outdoor mounting are available. Transformers with a fourth winding for connecting harmonic f ...
... Converter transformers are available for nearly all ratings and primary voltages of more than 100 kV. Secondary voltages are optimized to match the converter and motor voltage. Oil or dry types for indoor or outdoor mounting are available. Transformers with a fourth winding for connecting harmonic f ...
EXTRACT FANS IN DWELLINGS
... supply conductor. A means of isolation of the neutral conductor in a TN-S or TN-C-S system is not generally required where that conductor can reliably be regarded as being at Earth potential. The neutral conductor (PEN or N) for supplies provided in accordance with the ESQCR 2002 is considered to be ...
... supply conductor. A means of isolation of the neutral conductor in a TN-S or TN-C-S system is not generally required where that conductor can reliably be regarded as being at Earth potential. The neutral conductor (PEN or N) for supplies provided in accordance with the ESQCR 2002 is considered to be ...
2 The ignition system on the MZ202
... Although the source of RF interference cannot be eliminated, it is, however, possible to reduce it to such low levels that it is not noticeable, and in some cases not even measurable. If the interference is not noticeable, it is generally not considered to be a problem. The level of radio interfere ...
... Although the source of RF interference cannot be eliminated, it is, however, possible to reduce it to such low levels that it is not noticeable, and in some cases not even measurable. If the interference is not noticeable, it is generally not considered to be a problem. The level of radio interfere ...
outlet boxes, conduit boxes and fittings
... 3. All SPDs must have passed the UL 1449 Second Edition Fault Current Test with a Rating of 200,000 AIC. Documentation substantiating this claim must be provided. 4. SPDs shall use a separate path to building ground; the equipment safety ground is not to be used as a transient ground path. 5. All SP ...
... 3. All SPDs must have passed the UL 1449 Second Edition Fault Current Test with a Rating of 200,000 AIC. Documentation substantiating this claim must be provided. 4. SPDs shall use a separate path to building ground; the equipment safety ground is not to be used as a transient ground path. 5. All SP ...
UFC 3-520-01 Interior Electrical Systems
... The Unified Facilities Criteria (UFC) system is prescribed by MIL-STD 3007 and provides planning, design, construction, sustainment, restoration, and modernization criteria, and applies to the Military Departments, the Defense Agencies, and the DoD Field Activities in accordance with USD(AT&L) Memor ...
... The Unified Facilities Criteria (UFC) system is prescribed by MIL-STD 3007 and provides planning, design, construction, sustainment, restoration, and modernization criteria, and applies to the Military Departments, the Defense Agencies, and the DoD Field Activities in accordance with USD(AT&L) Memor ...
RSB6.8CS
... equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliab ...
... equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliab ...
Electromagnetic compatibility
Electromagnetic compatibility (EMC) is the branch of electrical sciences which studies the unintentional generation, propagation and reception of electromagnetic energy with reference to the unwanted effects (electromagnetic interference, or EMI) that such energy may induce. The goal of EMC is the correct operation, in the same electromagnetic environment, of different equipment which use electromagnetic phenomena, and the avoidance of any interference effects.In order to achieve this, EMC pursues two different kinds of issues. Emission issues are related to the unwanted generation of electromagnetic energy by some source, and to the countermeasures which should be taken in order to reduce such generation and to avoid the escape of any remaining energies into the external environment. Susceptibility or immunity issues, in contrast, refer to the correct operation of electrical equipment, referred to as the victim, in the presence of unplanned electromagnetic disturbances.Interference mitigation and hence electromagnetic compatibility is achieved by addressing both emission and susceptibility issues, i.e., quieting the sources of interference and hardening the potential victims. The coupling path between source and victim may also be separately addressed to increase its attenuation.