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IEEE 78 - AIEE-FEMA-NEMA STANDARDS PUBLICATION FOR ARC FURNACE TRANSFORMERS Organization: IEEE
Date: 1960-02-01
Description: This standard covers electrical char¬acteristics and mechanical features of 3-phase, 60- cycle, 2-winding, mineral-oil-immersed indoor transformers rated 250 to 35000 kva, inclusive, high voltage 2400 to 34400 volts, inclusive, used for sup¬plying electric power to direct arc ferrous-melting furnaces.
NEMA - NEMA TR 1 - TRANSFORMERS, STEP VOLTAGE REGULATORS AND REACTORS Organization: NEMA
Date: 2013-01-01
Description: This standards publication applies to single phase and poly phase power and distribution transformers (including step-voltage regulators and reactors). This standard excludes dry type transformers covered by NEMA ST20. This publication provides a reference list of applicable ANSI and IEEE C57 standards.
NEMA - NEMA ST 20 - DRY-TYPE TRANSFORMERS FOR GENERAL APPLICATIONS Organization: NEMA
Date: 2014-01-01
Description: It applies to transformers with and/or without accessories having ratings of 1.2 kV class, 0.25 kVA through 4000 kVA. Transformers not covered by this standard may be covered by NEMA TR 1. This standards publication applies to transformers, commonly known as general-purpose transformers for commercial, institutional and industrial use in nonhazardous locations both indoors and outdoors.
NEMA - NEMA TP 2 - STANDARD TEST METHOD FOR MEASURING THE ENERGY CONSUMPTION OF DISTRIBUTION TRANSFORMERS Organization: NEMA
Date: 2005-01-01
Description: This standard covers single-phase and three-phase dry-type and liquid-immersed distribution transformers at 60Hz for the North American system (transformers for transferring electrical energy from a primary distribution circuit to a secondary distribution circuit or within a secondary distribution circuit) This standard addresses the test procedures for determining the efficiency performance of the transformers covered in NEMA Publication TP 1. Products excepted from this standard include: a.
IEEE C57.125 - GUIDE FOR FAILURE INVESTIGATION, DOCUMENTATION, ANALYSIS, AND REPORTING FOR POWER TRANSFORMERS AND SHUNT REACTORS Organization: IEEE
Date: 2015-09-03
Description: Purpose This document is intended to provide a methodology by which the most probable cause of any particular transformer failure may be determined by applying the scientific method to investigations; provide sufficient guidelines, examples, and case histories to promote uniformity in the analysis of transformer failures; encourage the establishment of routine and uniform data collection so that valuable facts are not lost or destroyed; encourage consistency of nomenclature and compatibility with similar efforts by other organizations (Examples include but not limited to CIGRE, EEI, IEC, NEMA, NERC, and AEIC); and encourage cooperative efforts by users and manufacturers during the failure analysis.
IEEE C57.110 - RECOMMENDED PRACTICE FOR ESTABLISHING LIQUID-FILLED AND DRY- TYPE POWER AND DISTRIBUTION TRANSFORMER CAPABILITY WHEN SUPPLYING NONSINUSOIDAL LOAD CURRENTS Organization: IEEE
Date: 2008-03-27
Description: This recommended practice applies only to two winding transformers covered by IEEE Std C57.12.00-1993, IEEE Std C57.12.01-1998, and NEMA ST20-1992.
NEMA - ANSI C12.11 - FOR INSTRUMENT TRANSFORMERS FOR REVENUE METERING 10KV BIL THROUGH 350 KV BIL (0.6 KV NSV THROUGH 69 KV NSV) Organization: NEMA
Date: 2007-01-01
Description: Test methods for transformer-rated meters and self contained "A" base watt hour meter are included in this package as well as a watt hour safety standard. This package contains all parts of NEMA ANSI C12 and NEMA SG-AMI 1.
IEEE 259 - STANDARD TEST PROCEDURE FOR EVALUATION OF SYSTEMS OF INSULATION FOR DRY-TYPE SPECIALTY AND GENERAL-PURPOSE TRANSFORMERS Organization: IEEE
Date: 1999-06-26
Description: These insulation systems are intended for use in the types of transformers described in NEMA ST 1-1988 1 and NEMA ST 20-1992. In general, these dry-type transformers are used with the primary windings connected to secondary distribution circuits of 600 V nominal and below.
IEEE - ANSI C57.12.50 - REQUIREMENTS FOR VENTILATED DRY-TYPE DISTRIBUTION TRANSFORMERS, 1 TO 500 KVA, SINGLE-PHASE, AND 15 TO 500 KVA, THREE-PHASE, WITH HIGH-VOLTAGE 601 TO 34 500 VOLTS, LOW-VOLTAGE 120 TO 600 VOLTS - REPLACES NEMA C57.12.50-1981 Organization: IEEE
Date: 1981-01-01
Description: Dry-type transformers have been covered in the past by a variety of documents, including American National Standard General Requirements for Distribution, Power, and Regulating Transformers, ANSI C57.12.00- 1973; American National Standard Test Code for Distribution, Power, and Regulating Transformers, ANSI C57.12.90- 1973; American National Standard Dry-Type Transformers for General Applications, ANSI/NEMA ST 20-1 972; and Commercial, Institutional, and Industrial Dry-Type Transformers, NEMA TR 27-1965 (R1976).
NEMA - C12.18 - PROTOCOL SPECIFICATION FOR ANSI TYPE 2 OPTICAL PORT Organization: NEMA
Date: 2006-05-02
Description: Test methods for transformer-rated meters and self contained "A" base watt hour meter are included in this package as well as a watt hour safety standard. This package contains all parts of NEMA ANSI C12 and NEMA SG-AMI 1.
NEMA - ANSI C12.21 - PROTOCOL SPECIFICATION FOR TELEPHONE MODEM COMMUNICATION Organization: NEMA
Date: 2006-05-02
Description: Test methods for transformer-rated meters and self contained "A" base watt hour meter are included in this package as well as a watt hour safety standard. This package contains all parts of NEMA ANSI C12 and NEMA SG-AMI 1.
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.
IEEE - ANSI C37.121 - AMERICAN NATIONAL STANDARD FOR SWITCHGEAR— UNIT SUBSTATIONS— REQUIREMENTS Organization: IEEE
Date: 1989-06-05
Description: This new standard has been developed to outline the requirements for unit substations, utilizing other documents such as NEMA 201 covering primary substations, NEMA 210 covering secondary unit substations, and a draft document on articulated unit substations compiled by a working group of the disbanded High Voltage Apparatus Coordinating Committee (HVACC).
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.
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.
UL 1363A OUTLINE - OUTLINE OF INVESTIGATION FOR SPECIAL PURPOSE RELOCATABLE POWER TAPS - ISSUE 3 Organization: UL
Date: 2010-01-08
Description: These SPRPT do not include devices that incorporate isolating or any other types of transformers. They consist of a NEMA type attachment plug and a length of flexible cord terminated in an enclosure in which are mounted two or more receptacle outlets.
UL 2353 - UL STANDARD FOR SAFETY SINGLE- AND MULTI-LAYER INSULATED WINDING WIRE - THIRD EDITION Organization: UL
Date: 2016-10-10
Description: The enamelled winding wire shall be a designated NEMA Type MW 85 as specified in the Standard for Magnet Wire, NEMA MW 1000. These requirements cover winding wires with a diameter between 0.05 mm (0.002 in) and 5.0 mm (0.2 in) and MW 85 solvent-based enamel coated winding wires with a diameter between 0.040 mm (0.0016 in) and 1.60 mm (0.06 in).
CSA C22.2 NO 184 - SOLID-STATE LIGHTING CONTROLS - FOURTH EDITION Organization: CSA
Date: 2015-02-01
Description: Control devices containing phase cut dimmers may be optionally tested and marked in accordance with standard NEMA SSL 7A. In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard.
UL 2756 - UL STANDARD FOR SAFETY UL ADVANTAGE PROGRAM FOR CLASS III PRODUCTS - FIRST EDITION Organization: UL
Date: 2011-08-24
Description: These requirements do not apply to products with Laser Modules, notebook type computers, Class III devices other than described above in 1.1, products incorporating a high voltage inverter operating above SELV limits, Class I or Class II products with a NEMA enclosure rating or IP Rating noted either in the manual or marketing materials or marked on the unit, an interface to a cable distribution system or telecommunications network (TN) or motors.

1 - 19 of 19 results