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JEDEC JESD 282 - SILICON RECTIFIER DIODES - REVISION OF EIA-JESD282-B Organization: JEDEC
Date: 2002-11-01
Description: It also covers rating and characteristics, manufacturing and performance as well as test practices to demonstrate the performance of semiconductor rectifier diodes and rectifier stacks used for the conversion and/or control of electric power.
ANSI - C57.12.70 - TERMINAL MARKINGS AND CONNECTIONS FOR DISTRIBUTION AND POWER TRANSFORMERS Organization: ANSI
Date: 1978-01-01
Description: This standard does not describe terminal markings and connections of rectifier transformers; these are de- scribed in American National Standard Requirements, Terminology, and Test Code for Pool-Cathode Mercury-Arc Rectifier Transformers, ANSI C57.18-1964 (R1971).
NEMA - ANSI C57.12.70 - TERMINAL MARKINGS AND CONNECTIONS FOR DISTRIBUTION AND POWER TRANSFORMERS - NOW COPYRIGHTED BY IEEE Organization: NEMA
Date: 1978-01-01
Description: This standard does not describe terminal markings and connections of rectifier transformers; these are described in American National Standard Requirements, Terminology, and Test Code for Pool-Cathode Mercury-Arc Rectifier Transformers, ANSI C57.18-1964 (R1971). 
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.
UL 1562 - UL STANDARD FOR SAFETY TRANSFORMERS, DISTRIBUTION, DRY-TYPE - OVER 600 VOLTS - FOURTH EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING OCTOBER 22, 2015 Organization: UL
Date: 2013-01-25
Description: These requirements do not cover the following transformers: a) Instrument transformers b) Step-voltage and induction voltage regulators c) Current regulators d) Arc furnace transformers e) Rectifier transformers f) Specialty transformers (such as rectifier, ignition, gas tube sign transformers, and the like) g) Mining transformers h) Motor-starting reactors and transformers These requirements do not cover transformers under the exclusive control of electrical utilities utilized for communication, metering, generation, control, transformation, transmission, and distribution of electric energy regardless of whether such transformers are located indoors, in buildings and rooms used exclusively by utilities for such purposes; or outdoors on property owned, leased, established rights on private property or on public rights of way (highways, streets, roads, and the like).
IEEE C57.94 - RECOMMENDED PRACTICE FOR INSTALLATION, APPLICATION, OPERATION, AND MAINTENANCE OF DRY-TYPE DISTRIBUTION AND POWER TRANSFORMERS Organization: IEEE
Date: 2015-12-05
Description: This recommended practice covers general recommendations for the application, installation, operation, and maintenance of all single and polyphase ventilated, non-ventilated, and sealed dry-type distribution and power transformers or autotransformers, including those with solid-cast and/or resin encapsulated windings except as follows: a) Instrument transformers b) Step- and induction-voltage regulators c) Arc-furnace transformers d) Rectifier transformers e) Specialty and general purpose transformers f) Mine transformers g) Testing transformers h) Welding transformers Purpose The recommended practice is intended for general use in the application, installation, operation, and maintenance of dry-type transformers manufactured in accordance with IEEE Std C57.12.01, ANSI C57.12.50 [B1], ANSI C57.12.51 [B2], and ANSI C57.12.52 [B3]. Familiarity with other standards applying to dry-type transformers and to their protection is assumed and the provisions of those standards are indicated herein only for clarity.
ANSI - ANSI C57.12.13 - CONFORMANCE REQUIREMENTS FOR LIQUID-FILLED TRANSFORMERS USED IN UNIT INSTALLATIONS, INCLUDING UNIT SUBSTATIONS Organization: ANSI
Date: 1982-01-01
Description: This standard does not cover the following types of liquid-filled transformers: (1)Overhead-type distribution transformers, including those mounted in surface enclosures (2)Pad-mounted compartmental-type transformers as described and defined in the following standards: American National Standard Requirements for Pad-Mounted Compartmental-Type Self-Cooled Single-Phase Distribution Transformers with High-Voltage Bushings (High-Voltage, 34 500 GrdY/19 920 Volts and Below; Low-Voltage, 240/120; 167 kVA and Smaller), ANSI C57.12.21-1980 American National Standard Requirements for Pad-Mounted Compartmental-Type Self-Cooled Three-Phase Distribution Transformers with High-Voltage Bushing (34 500 GrdY/19 920 Volts and Below; 2500 kVA and Smaller), ANSI C57.12.22-1980 American National Standard Requirements for Pad-Mounted Compartmental-Type Self-Cooled Single-Phase Distribution Transformers with Separable Insulated High-Voltage Connectors, High-Voltage 34 500 GrdY/19 920 Volts and Below; Low-Voltage, 240/120; 167 kVA and Smaller, ANSI C57.12.25-1981 American National Standard Requirements for Pad-Mounted Compartmental-type Self-Cooled Three-Phase Distribution Transformers for Use with Separable Insulated High-Voltage Connectors, High-Voltage, 24 940 GrdY/14 400 Volts and Below; 2500 kVA and Smaller, ANSI C57.12.26-1975 (3) Subsurface or submersible-type transformers as described and defined in the following standards: American National Standard requirements for Underground-Type Single-Phase Distribution Transformers, with Separable Insulated High-Voltage Connectors, High Voltage 24 940 GrdY/14 400 Volts and Below, Low Voltage 240/120, 100 kVA and Smaller, ANSI C57.12.23-1978 American National Standard Requirements for Underground-Type Three-Phase Distribution Transformers, 2500 kVA and Smaller; High Voltage 24 940 GrdY/14 400 Volts and Below; Low Voltage 480 Volts and Below, ANSI C57.12.24-1982 American National Standard Requirements for Secondary Network Tranformers, Subway and Vault Types (Liquid Immersed), ANSI C57.12.40-1982 (4) Rectifier transformers (5) Mobile transformers (6) All transformers for use in ships and other watercraft, railway rolling stock, aircraft, and automotive vehicles other than mobile home and recreational vehicles (7) Transformers used in mines (8) Transformers installed in railways for the generation, transformation, transmission, or distribution of power and used exclusively for operation of rolling stock, or transformers installed in railways and used exclusively for signaling, or communication purposes (9) Instrument transformers (10) Step-voltage regualors and induction voltage regulators (11) Arc furnace transformers (12) Transformers installed with communication equipment under the exclusive control of communication utilities, located outdoors or in building spaces used exclusively for such installations (13) Transformers that are used under the exclusive control of electric utilities for the purpose of communication or metering, or for the generation, control, transformation, transmission, and distribution of electric energy and that are located in buildings used exclusively for such purposes or located outdoors on property owned or leased by the utility, or on public highways, streets, roads, etc, or by established rights on private property
NEMA - C37.121 - SWITCHGEAR - UNIT SUBSTATIONS - REQUIREMENTS - NOW COPYRIGHTED BY IEEE Organization: NEMA
Date: 1989-01-01
Description: This standard does not cover the following installations: (1) Substations in which the transformer section includes load-tap-changing equipment (2) Substations in which the transformer section is described and defined as "network," "subway," "vault," or "underground" in American National Standards C57.12.24-1989, C57.12.40-1982, and C57.12.57-1987 (Footnote 1) (3) Substations in which the transformer section is described and defined as "pad-mounted" in American National Standards C57.12.22-1989, C57.12.26-1987, and C57.12.27(Footnote 1) (4) Substations with gas-insulated equipment, such as substations insulated with SF6, described in ANSI/IEEE C37.122-1989(Footnote 1) (5) Rectifier-type substations (6) Mobile substations (7) Installations in ships, watercraft, railway rolling stock, aircraft, or automotive vehicles other than mobile homes and recreational vehicles (8) Installations for mines (9) Installations of railways for generation, transformation, transmission, or distribution of power used exclusively for operation of rolling stock, or for installations used exclusively for signaling and railway communication purposes.
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: The new standards should be easier and more efficient to use, since they are arranged according to the sequence in which information is normally needed. ANSI C57.12.50-1981 includes customary units and metric (SI) units, in accordance with ANSI policy.
NECA NEIS 410 - STANDARD FOR INSTALLING AND MAINTAINING LIQUID-FILLED TRANSFORMERS Organization: NECA
Date: 2013-01-01
Description: Cast coil transformers 5. Arc furnace transformers 6. Rectifier transformers 7. Network transformers 8.
CSA C22.2 NO 66.3 - LOW VOLTAGE TRANSFORMERS - PART 3: CLASS 2 AND CLASS 3 TRANSFORMERS - FIRST EDITION; UPDATE NO. 1: NOVEMBER 2012 Organization: CSA
Date: 2006-04-17
Description: In addition to the items specified in Clause 1.3 of Part 1, the requirements of Part 3 do not cover: a) Power supplies (a transformer provided with a rectifier is considered a power supply); b) Toy transformers; c) Cord and plug connected transformers other than Class 3; d) Direct plug-in transformers; e) Transformers intended for use in audio, radio, or television type appliances; or f) Other special types of transformers covered in requirements for other electrical devices or appliances.
UL 5085-3 - UL STANDARD FOR SAFETY LOW VOLTAGE TRANSFORMERS – PART 3: CLASS 2 AND CLASS 3 TRANSFORMERS - FIRST EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING NOVEMBER 30, 2012 Organization: UL
Date: 2006-04-17
Description:   In addition to the items specified in Clause 1.3 of Part 1, the requirements of Part 3 do not cover: a) Power supplies (a transformer provided with a rectifier is considered a power supply); b) Toy transformers; c) Cord and plug connected transformers other than Class 3; d) Direct plug-in transformers; e) Transformers intended for use in audio, radio, or television type appliances; or f) Other special types of transformers covered in requirements for other electrical devices or appliances.
UL 201 - UL STANDARD FOR SAFETY GARAGE EQUIPMENT - THIRD EDITION Organization: UL
Date: 2015-03-31
Description:   These requirements cover the following: a) Equipment used in servicing and repairing automobiles, such as dynamometers, battery testers, roll-up brake lathes, distributor testers, driveway signals, engine analyzers, exhaust emissions testers, generator-alternator-regulator testers, growlers, ignition testers, rectifier diode testers, timing lights, fluid changing equipment, tire changers, tune-up testers, wheel alignment and balance equipment, and other similar equipment primarily for use in garages and service stations.
IEEE C37.121 - GUIDE FOR SWITCHGEAR-UNIT SUBSTATION-REQUIREMENTS Organization: IEEE
Date: 2012-12-05
Description: d) Gas-insulated substations as described in IEEE Std C37.122™ [B13]. e) Rectifier-type substations. f) Mobile unit substations.
UL 1012 - UL STANDARD FOR SAFETY POWER UNITS OTHER THAN CLASS 2 - EIGHTH EDITION; REPRINT WITH REVISIONS THROUGH AND INCLUDING APRIL 08, 2016 Organization: UL
Date: 2010-11-09
Description:   These requirements cover power supplies for centralized ac or dc power systems, including dc power supplies, rectifiers, and the like, that form part of these systems.

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