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FAA-E-2803 - POTENTIAL ISOLATION TRANSFORMERS FOR AIRPORT LIGHTING SYSTEMS Organization: FAA
Date: 1987-02-12
Description: This specification sets forth the requirements for potential isolation transformers for use in airport lighting systems.
GOST 18629 - FEEDING TRANSFORMERS AND FILTER CHOKES. SEERIES OF ELECTRICS POTENTIALS Organization: GOST
Date: 1973-04-19
NR - BR 955 - SPECIFICATION FOR CONSTANT POTENTIAL BATTERY CHARGERS Organization: NR
Date: 1977-02-01
Description: This Specification does not cover battery chargers:- (a) for use with Aster track circuit equipment (b) other than constant potential type (c) For telecommunications purposes The unit shall consist of a transformer, rectifying and regulating means, a power-off detector when ordered, and fuses, all suitably connected and mounted and with the appropriate terminals for external wiring and earthing purposes.
OUP - ELECTRIC MACHINERY AND TR - ELECTRIC MACHINERY AND TRANSFORMERS Organization: OUP
Date: 2000-07-20
Description: Raising the voltage level at the generating end and lowering it at the consumer's end are done effectively by means of stepup and step-down transformers, respectively. This voltage change is made to reduce the electrical losses along the length of the transmission line.
IEEE 421B - HIGH-POTENTIAL-TEST REQUIREMENTS FOR EXCITATION SYSTEMS FOR SYNCHRONOUS MACHINES Organization: IEEE
Date: 1979-06-01
Description: This standard supplements existing standards for components used on excitation systems: ANSI C19.3-1973, Industrial Control Apparatus - General; ANSI C19.4-1973, Industrial Control Apparatus - Enclosures; ANSI C19.5-1973, Industrial Control Apparatus - Switching or Controlling Devices; ANSI C19.6-1973, Industrial Control Apparatus - Control-Circuit Devices and Assemblies; ANSI C19.7-1973, Industrial Control Apparatus - Controllers and Controller Assemblies; ANSI C34.2-1968 (R1973), Practices and Requirements for Semiconductor Power Rectifiers; ANSI C37.18-1968 (R1975), Requirements for Field Discharge Circuit Breakers for Rotating Electric Machinery; ANSI/IEEE C57.12.00-197 3, General Requirements for Distribution, Power, and Regulating Transformers; ANSI/IEEE C57.12.90-1973, Test Code for Distribution, Power, and Regulating Transformers; and NEMA ICs1970 (R1975), Industrial Controls and Systems.
NECA NEIS 410 - STANDARD FOR INSTALLING AND MAINTAINING LIQUID-FILLED TRANSFORMERS Organization: NECA
Date: 2013-01-01
Description: Specialty transformers such as control, industrial control, instrument, current, potential, metering, buck-boost transformers, or lighting and ballast transformers 3.
CSA C22.2 NO 13 - TRANSFORMERS FOR OIL- OR GAS-BURNER IGNITION EQUIPMENT - FOURTH EDITION Organization: CSA
Date: 2013-07-01
Description: This Standard applies to transformers for oil- and gas-burner ignition equipment for potentials up to and including 600 V low potential, and 15,000 V open-circuit high-potential, designed to be employed in accordance with the rules of the Canadian Electrical Code, Part I.
DS/IEC 76-3-1 - POWER TRANSFORMERS - PART 3: INSULATION LEVELS AND DIELECTRIC TESTS - EXTERNAL CLEARANCES IN AIR Organization: DS
Date: 1988-11-07
Description: The Standard specifies clearances in the air between live parts of bushing on oil-immersed power transformers and to objects on earth potential.
NACE RP0297 - MAINTENANCE PAINTING OF ELECTRICAL SUBSTATION APPARATUS INCLUDING FLOW COATING OF TRANSFORMER RADIATORS - ITEM NO:21081 Organization: NACE
Date: 1997-06-27
Description: This standard deals only with substation apparatus, which include: • Transformers • Circuit breakers (all types) • Switchgear • Regulators • Potential transformers • Current transformers • Coupling capacitor potential devices (CCPDs) This standard does not include the painting of structural steel, fencing, buildings, or other miscellaneous items within the substations.
IEEE C57.159 - GUIDE ON TRANSFORMERS FOR APPLICATION IN DISTRIBUTED PHOTOVOLTAIC (DPV) POWER GENERATION SYSTEMS Organization: IEEE
Date: 2016-05-15
Description: The guide supports currently evolving industry of DPV power generation by providing guidance on specification, design, and application of transformers for these systems. This guide also intends to help avoid potential problems caused by improperly defined, missed, and/or misinterpreted points of consideration.
IEEE PC57.159 DRAFT - GUIDE ON TRANSFORMERS FOR 3 APPLICATION IN DISTRIBUTED 4 PHOTOVOLTAIC (DPV) POWER GENERATION 5 SYSTEMS Organization: IEEE
Date: 2016-02-01
Description: The Guide supports currently evolving industry of DPV power generation by providing guidance on specification, design and application of transformers for these systems. This Guide also intends to help avoid potential problems caused by improperly defined, missed and/or misinterpreted points of consideration.
IEEE 52 - APPLICATION GUIDE FOR GROUNDING OF INSTRUMENT TRANSFORMER SECONDARY CIRCUITS AND CASES Organization: IEEE
Date: 1951-03-01
Description: This Guide contains general and specific recommendations for grounding of the secondary circuits and cases of instrument, i.e., potential and current, transformers in all types of installations. These recommendations apply to all instrument transformers irrespective of the value of primary voltage or whether the primary windings of the transformers are connected to, or in, power circuits or whether these primary windings are connected in the secondary circuits of other instrument transformers.
IEEE C93.1 - REQUIREMENTS FOR POWER-LINE CARRIER COUPLING CAPACITORS AND COUPLING CAPACITOR VOLTAGE TRANSFORMERS (CCVT) Organization: IEEE
Date: 1999-01-01
Description: This standard applies to capacitors for coupling power-line carriers and for reducing rate of rise of breaker transient recovery voltage, and to coupling capacitor voltage transformers (CCVT) for connection to a high voltage power circuit, between line and ground, to supply a low voltage for measurement, control, and protective functions.
NEMA - C93.1 - REQUIREMENTS FOR POWER-LINE CARRIER COUPLING CAPACITORS AND COUPLING CAPACITOR VOLTAGE TRANSFORMERS (CCVT) - NOW COPYRIGHTED BY IEEE Organization: NEMA
Date: 1999-01-01
Description: This standard applies to capacitors for coupling power-line carriers and for reducing rate of rise of breaker transient recovery voltage, and to coupling capacitor voltage transformers (CCVT) for connection to a high voltage power circuit, between line and ground, to supply a low voltage for measurement, control, and protective functions.
NR/L2/SIGELP/27419 ISSUE 1 - PRODUCT SPECIFICATION FOR DISTRIBUTION INTERFACE TRANSFORMER ASSEMBLIES (DITA) FOR SIGNALLING POWER DISTRIBUTION SYSTEMS - COMPLIANCE DATE: 6 JUNE 2015 Organization: NR
Date: 2015-06-06
Description: Purpose This specification defines the requirements for the design, installation, integration and testing of distribution interface transformer assemblies (DITA) into Network Rail managed infrastructure.
IEEE C57.142 - GUIDE TO DESCRIBE THE OCCURRENCE AND MITIGATION OF SWITCHING TRANSIENTS INDUCED BY TRANSFORMERS, SWITCHING DEVICE, AND SYSTEM INTERACTION Organization: IEEE
Date: 2010-12-09
Description: The focus of this guide is on the interaction between a transformer, the system, and a switching device as a result of several reports of transformer internal winding failures.
ITU-T K.9 - PROTECTION OF TELECOMMUNICATION STAFF AND PLANT AGAINST A LARGE EARTH POTENTIAL DUE TO A NEIGHBOURING ELECTRIC TRACTION LINE Organization: ITU-T
Date: 1988-11-01
Description: General From the technical standpoint the precautions taken on electrified railways to protect staff and plant may differ according to a number of factors, the chief of which are: - ground resistivity; - electrical line equipment (track circuits) which, though necessary for railway safety installations, may prevent the systematic connection to rail of metal structures near the railway; - the characteristics of the protective devices required which, with a.c. electric traction systems, may be to some extent affected by the presence (or absence) of booster-transformers; - the degree of insulation of the contact system, which may also affect the nature of the protective devices, particularly in the case of relatively low-voltage electric systems such as 1500 V d.c. lines; - the means to be recommended for linking a metal structure to the rail in case of overvoltage without making a permanent connection (one method is to make the connection via a spark gap).
NASA-LLIS-0443 - LESSONS LEARNED - HIGH VOLTAGE ELECTRIC CIRCUITS Organization: NASA
Date: 1992-11-16
Description: The secondary factor was that the technician did not test the voltage on the line side of the potential transformer compartment to verify that the bus was in fact de-energized.
ICEA S-73-532 - STANDARD FOR CONTROL, THERMOCOUPLE, EXTENSION AND INSTRUMENTATION CABLE - SEE NEMA WC 57, WHICH IS BASED UPON ICEA S-73-532 Organization: ICEA
Date: 2014-10-31
Description: Control cables convey signals between devices interfaced directly with the electrical power system, such as current transformers, potential transformers, relays, switches, and meters. Instrumentation cables and thermocouple extensions are multiconductor cables that convey lowenergy electrical signals (circuits that are inherently power limited) used for monitoring or controlling electrical power systems and their associated processes.
NEMA - ANSI/NEMA WC 57 - STANDARD FOR CONTROL, THERMOCOUPLE EXTENSION, AND INSTRUMENTATION CABLES Organization: NEMA
Date: 2014-01-01
Description: Control cables convey signals between devices interfaced directly with the electrical power system, such as current transformers, potential transformers, relays, switches, and meters. Instrumentation cables and thermocouple extensions are multiconductor cables that convey lowenergy electrical signals (circuits that are inherently power limited) used for monitoring or controlling electrical power systems and their associated processes.

1 - 20 of 47 results