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IEEE 1653.1 - Standard for Traction Power Rectifier Transformers for Substation Applications up to 1500 V DC Nominal Output IEEE
June 30, 2016 - IEEE

This standard covers design, manufacturing, and testing unique to the application of power rectifier transformers intended to operate in dc supplied transportation substation applications up to 1500 V dc nominal output. Purpose At the present time there are no suitable standards...

ISO 22829 - Resistance welding equipment - Transformers - Integrated transformer-rectifier units for welding guns operating at 1 000 Hz
September 1, 2017 - ISO

This document specifies additional requirements to those given in ISO 5826 for single-phase inverter transformers with connected rectifier for DC welding. This document applies to transformers, primarily used in welding guns, operating at 1 000 Hz with a rated input voltage of...

DIN EN ISO 22829 - Resistance welding equipment - Transformers - Integrated transformer-rectifier units for welding guns operating at 1 000 Hz (ISO 22829:2017)
January 1, 2018 - DIN

This document specifies additional requirements to those given in ISO 5826 for single-phase inverter transformers with connected rectifier for DC welding. This document applies to transformers, primarily used in welding guns, operating at 1 000 Hz with a rated input voltage of...

DS/EN ISO 22829 - Resistance welding equipment – Transformers – Integrated transformer-rectifier units for welding guns operating at 1 000 Hz (ISO 22829:2017)
October 30, 2017 - DS

ISO 22829:2017 specifies additional requirements to those given in ISO 5826 for single-phase inverter transformers with connected rectifier for DC welding. This document applies to transformers, primarily used in welding guns, operating at 1 000 Hz with a rated input voltage of...

IEEE C57.110 - Recommended Practice for Establishing Liquid Immersed and Dry-Type Power and Distribution Transformer Capability when Supplying Nonsinusoidal Load Currents
June 14, 2018 - IEEE

This recommended practice applies only to two winding transformers covered by IEEE Std C57.12.00, IEEE Std C57.12.01, and NEMA ST20.1 It does not apply to rectifier transformers.2 Purpose The purpose of this document is to establish uniform methods for determining the...

IEEE PC57.93 DRAFT - Draft Guide for Installation and Maintenance of Liquid Immersed Power Transformers
February 1, 2018 - IEEE

The recommendations presented in this guide apply to the inspection, installation, and maintenance of liquid-immersed power transformers rated 501 kVA and above with secondary voltages of 1000 V and above. This guide covers the entire range of power transformers, including extra...

IEEE C57.12.10 - Requirements for Liquid-Immersed Power Transformers
December 6, 2017 - IEEE

This voluntary consensus standard sets forth the requirements for power transformer application. This standard is intended to be used as a basis for performance, interchangeability, and safety of the equipment covered, and to assist in the proper selection of such equipment. This document is...

CSA C802.2 - Test method and minimum efficiency values for dry-type transformers
January 1, 2018 - CSA

This Standard specifies efficiency values for dry-type transformers. The total ownership cost (TOC) methodology is recommended as the means for achieving these efficiencies, particularly for electric utilities. This Standard also specifies an optimal method for users other than utilities,...

UL 1310 - UL Standard for Safety Class 2 Power Units
March 9, 2018 - UL

These requirements cover indoor and outdoor use Class 2 power supplies and battery chargers. These units utilize an isolating transformer and may incorporate components to provide an alternating- or direct-current output. Each output provides Class 2 power levels in accordance with the...

IEEE C57.12.36 - Standard Requirements for Liquid-Immersed Distribution Substation Transformers
June 15, 2017 - IEEE

This standard covers certain electrical, dimensional, and mechanical characteristics of 50 Hz and 60 Hz, two winding, liquid-immersed distribution substation transformers. Such transformers may be remotely or integrally associated with either primary and secondary switchgear or...

CSA C9 - Dry-type transformers
January 1, 2017 - CSA

This Standard applies to single phase and polyphase dry-type transformers, including those with cast or resin encapsulated coils, that are within the limits of the electrical ratings specified in Clauses 7.2 and 7.3, and that are intended for use in accordance with the service conditions for...

IEEE C57.12.00 - General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
December 5, 2015 - IEEE

This standard describes electrical and mechanical requirements of liquid-immersed distribution and power transformers, and autotransformers and regulating transformers, single-phase and polyphase, with voltages of 601 V or higher in the highest voltage winding. This standard applies...

IEEE C57.94 - Recommended Practice for Installation, Application, Operation, and Maintenance of Dry-Type Distribution and Power Transformers
December 5, 2015 - IEEE

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...

DIN EN ISO 5826 - Resistance welding equipment - Transformers - General specifications applicable to all transformers (ISO 5826:2014)
July 1, 2014 - DIN

This International Standard gives specifications applicable to the following types of transformers for use in resistance welding equipment: - single-phase transformers for a.c. welding, typically operating at 50 Hz or 60 Hz; - single-phase transformers with connected...

CSA C88 - Power transformers and reactors
January 1, 2016 - CSA

This Standard, except as noted in Clause 1.2, applies to all liquid-filled transformers, autotransformers, booster transformers, load-tap-changing transformers, grounding transformers, phase-shifting transformers, series-voltage regulators, and shunt reactors....

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