troubleshooting and maintenance guide
... The testing methods in this guide are written in such a way that it minimizes the disassembly of the charger. Please take the time to familiarize yourself with the wire diagram before getting started. There are some very basic tests to initially perform to determine if service is required on the cha ...
... The testing methods in this guide are written in such a way that it minimizes the disassembly of the charger. Please take the time to familiarize yourself with the wire diagram before getting started. There are some very basic tests to initially perform to determine if service is required on the cha ...
THE TITLE OF PAPER, IN BOLD CAPITAL LETTERS
... Fig. 1. Optimal efficiency obtained by controlling field current for different operating points (experimental results). ...
... Fig. 1. Optimal efficiency obtained by controlling field current for different operating points (experimental results). ...
micom P342 / 343 / 344 / 345
... Third harmonic neutral undervoltage protection covers the final 15% of the stator winding and, in conjunction with the other ground fault elements, provides 100% ground fault protection for the stator. This is supervised by a three phase undervoltage element. Additional supervision using three phase ...
... Third harmonic neutral undervoltage protection covers the final 15% of the stator winding and, in conjunction with the other ground fault elements, provides 100% ground fault protection for the stator. This is supervised by a three phase undervoltage element. Additional supervision using three phase ...
Slides on Steady-state basics
... R2’ is the rotor resistance referred to the stator (as indicated by the prime – see slide 20). The variable “s” is the slip, as defined earlier. “Referred to”: ohmic value of impedances differ in numerical value, according to ...
... R2’ is the rotor resistance referred to the stator (as indicated by the prime – see slide 20). The variable “s” is the slip, as defined earlier. “Referred to”: ohmic value of impedances differ in numerical value, according to ...
MCR 0164 Including the Meter Multiplier on the extranet
... meters can withstand. They are designed to do this in a known ratio, the ‘CT ratio’. When the connection voltage is greater than low voltage, this voltage also needs to be stepped down. CT meters designed to work with voltage transformers (VTs) are used. When CTs or CTs and VTs are in use, the consu ...
... meters can withstand. They are designed to do this in a known ratio, the ‘CT ratio’. When the connection voltage is greater than low voltage, this voltage also needs to be stepped down. CT meters designed to work with voltage transformers (VTs) are used. When CTs or CTs and VTs are in use, the consu ...
Services and Service Equipment CEC-6
... The telephone and T.V. cables may be installed without a fixed minimum separation from the power service conductors, provided: - a concentric neutral cable or metal covered cable is used for the power conductors, or - the power conductors are installed in a conduit or plastic pipe. Otherwise, the se ...
... The telephone and T.V. cables may be installed without a fixed minimum separation from the power service conductors, provided: - a concentric neutral cable or metal covered cable is used for the power conductors, or - the power conductors are installed in a conduit or plastic pipe. Otherwise, the se ...
Not Used - Michigan State University
... An indicating lamp of the push-to-test type which shall indicate that all switch operators are coupled to their respective interrupter switches and are in the correct positions; that all doors providing access to interrupter switches powered by stored-energy switch operators are closed and latched; ...
... An indicating lamp of the push-to-test type which shall indicate that all switch operators are coupled to their respective interrupter switches and are in the correct positions; that all doors providing access to interrupter switches powered by stored-energy switch operators are closed and latched; ...
Troubleshooting with Insulation Resistance Test
... on newly installed low-voltage cables. Knowing the actual length of low-voltage cables is required because low-voltage cables, like all conductors, have resistance that reduces the amount of power passing through them. The greater the length of a cable, the greater the power reduction (attenuation) ...
... on newly installed low-voltage cables. Knowing the actual length of low-voltage cables is required because low-voltage cables, like all conductors, have resistance that reduces the amount of power passing through them. The greater the length of a cable, the greater the power reduction (attenuation) ...
1 - TFEIP
... capacitors in a country and an analysis of the proportion of these that contain PCBs and the proportion that have the potential to leak. This analysis would therefore require a more detailed audit of electrical equipment within a country. Similarly, for fragmentising operations, the detailed methodo ...
... capacitors in a country and an analysis of the proportion of these that contain PCBs and the proportion that have the potential to leak. This analysis would therefore require a more detailed audit of electrical equipment within a country. Similarly, for fragmentising operations, the detailed methodo ...
Short-circuit current rating (SCCR) of industrial control panels
... equipment label that Machine 1’s control panel is rated for 42kA. However, Machine 2 is older equipment and its equipment label does not list an assembly SCCR for the control panel. Using the worst case available fault current level, Machine 1 is not compliant (42kA < 54kA). The facility decides to ...
... equipment label that Machine 1’s control panel is rated for 42kA. However, Machine 2 is older equipment and its equipment label does not list an assembly SCCR for the control panel. Using the worst case available fault current level, Machine 1 is not compliant (42kA < 54kA). The facility decides to ...
Application Note AN4146 Design Guidelines for Quasi-Resonant Converters )
... input voltage and full load condition, which should be higher than the minimum switching frequency of FPS (20kHz). By increasing fsmin, the transformer size can be reduced. However, this results in increased switching losses. Therefore determine fsmin by a trade-off between switching losses and tran ...
... input voltage and full load condition, which should be higher than the minimum switching frequency of FPS (20kHz). By increasing fsmin, the transformer size can be reduced. However, this results in increased switching losses. Therefore determine fsmin by a trade-off between switching losses and tran ...
Plasma generator
... use a completely different effect from turns ratios to achieve a high voltage output, which involves transmission line theory, magnetic fields, and a lot of power. Tesla coil’s output voltages are dependant upon factors such at secondary Q factors, and not as much on turns ratios. My PG13 is complet ...
... use a completely different effect from turns ratios to achieve a high voltage output, which involves transmission line theory, magnetic fields, and a lot of power. Tesla coil’s output voltages are dependant upon factors such at secondary Q factors, and not as much on turns ratios. My PG13 is complet ...
Series 700 A/VS Power Conditioner
... The Power Line Conditioner consists of a front access power cabinet incorporating an all copper, multiple tapped, triple shield isolation/regulation transformer. The ultra low output impedance of the transformer in conjunction with the electrostatic shields assures precision hospital grade performan ...
... The Power Line Conditioner consists of a front access power cabinet incorporating an all copper, multiple tapped, triple shield isolation/regulation transformer. The ultra low output impedance of the transformer in conjunction with the electrostatic shields assures precision hospital grade performan ...
UNIT – VI UNIT-6: SPECIAL MACHINES Explain the constructional
... high reactance and low resistance where as the auxiliary winding will have high resistance and low reactance. At stand still both the windings are connected in parallel across the supply. When the supply is given, the currents flow through the main winding (IM) and auxiliary winding (IA) and there ...
... high reactance and low resistance where as the auxiliary winding will have high resistance and low reactance. At stand still both the windings are connected in parallel across the supply. When the supply is given, the currents flow through the main winding (IM) and auxiliary winding (IA) and there ...
DESIGN AND FABRICATION OF SINGLE PHASE INDUCTION
... the motor [1]. These modifications include; i) ...
... the motor [1]. These modifications include; i) ...
Substation Equipment Testing
... • Simple measurement of single-phase current on one side of the transformer, usually the HV side, with the other side left floating (with the exception of a grounded neutral). • The tests should be performed at the highest possible test voltage without exceeding the voltage rating of the excited win ...
... • Simple measurement of single-phase current on one side of the transformer, usually the HV side, with the other side left floating (with the exception of a grounded neutral). • The tests should be performed at the highest possible test voltage without exceeding the voltage rating of the excited win ...
PDF- Version
... The idealized view as assumed by Rick Anderson , that a toroidal coil can not produce a leakage field is out of question. Notice: The two leakage fields (4.3 mT and 0.5 mT) were measured with 12 V voltage and a "constant current“ (duration: 3 to 4 seconds) of approximately 100 A. The 66 mg steel nee ...
... The idealized view as assumed by Rick Anderson , that a toroidal coil can not produce a leakage field is out of question. Notice: The two leakage fields (4.3 mT and 0.5 mT) were measured with 12 V voltage and a "constant current“ (duration: 3 to 4 seconds) of approximately 100 A. The 66 mg steel nee ...
PSCAD/EMTDC Simulation of Powe
... between primary-side and secondary-side voltages. This difference is not of any importance for voltage sags as experienced by the equipment. All that matter is the change between the pre-fault voltages and the during fault voltages, in magnitude and in phase-angle. In the power system the propagatio ...
... between primary-side and secondary-side voltages. This difference is not of any importance for voltage sags as experienced by the equipment. All that matter is the change between the pre-fault voltages and the during fault voltages, in magnitude and in phase-angle. In the power system the propagatio ...
technically speaking
... Finally, it's time to check for the proper micro amp signal using a meter. The meter must be capable of measuring 1 to 10 microamps DC and have a resolution of .1 microamps. The microamp meter is wired in series with the flame sensor and is left in the system during operation of the burner. If the s ...
... Finally, it's time to check for the proper micro amp signal using a meter. The meter must be capable of measuring 1 to 10 microamps DC and have a resolution of .1 microamps. The microamp meter is wired in series with the flame sensor and is left in the system during operation of the burner. If the s ...
Interconnection application
... No information in this Application will be considered confidential unless a written agreement is made with PNM prior to the submission of the Application. In no event will information on the Application, which is required by the NMPRC, be withheld from the NMPRC. Applicant certifies that to the best ...
... No information in this Application will be considered confidential unless a written agreement is made with PNM prior to the submission of the Application. In no event will information on the Application, which is required by the NMPRC, be withheld from the NMPRC. Applicant certifies that to the best ...
SOUTHERN COMPANY DISTRIBUTION
... Where necessary, the Company may limit the capacity and operating characteristics of single-phase generators in a manner consistent with its existing limitations for singlephase motors to avoid the potential for a generating facility to cause problems with the service of other Customers. The rules o ...
... Where necessary, the Company may limit the capacity and operating characteristics of single-phase generators in a manner consistent with its existing limitations for singlephase motors to avoid the potential for a generating facility to cause problems with the service of other Customers. The rules o ...
Transformer
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Commonly, transformers are used to increase or decrease the voltages of alternating current in electric power applications.A varying current in the transformer's primary winding creates a varying magnetic flux in the transformer core and a varying magnetic field impinging on the transformer's secondary winding. This varying magnetic field at the secondary winding induces a varying electromotive force (EMF) or voltage in the secondary winding. Making use of Faraday's Law in conjunction with high magnetic permeability core properties, transformers can thus be designed to efficiently change AC voltages from one voltage level to another within power networks.Since the invention of the first constant potential transformer in 1885, transformers have become essential for the transmission, distribution, and utilization of alternating current electrical energy. A wide range of transformer designs are encountered in electronic and electric power applications. Transformers range in size from RF transformers less than a cubic centimeter in volume to units interconnecting the power grid weighing hundreds of tons.