定价： 126元 / 折扣价： 108 元

The reliable performance of oil in an insulation system depends upon certain basic oil characteristics which can affect overall apparatus characteristics. Such oil characteristics are integral parts of the equipment design for which the manufacturer has final responsibility. The reliable operation of the equipment in service for which the electric power producer has final responsibility also depends on maintaining certain basic oil characteristics. Adherence to the recommended oil… read more characteristics will assist in obtaining the desired equipment characteristics. Other tests or verification of the integrity of the insulation system are often necessary and required. read less

定价： 53元 / 折扣价： 46 元

This guide recommends standard tests and evaluation procedures for silicone transformer fluid. Criteria for maintenance and methods of reconditioning of silicone fluid are described. It is not the intent of this guide to cover the subject of retrofilling transformers with silicone fluids.

定价： 141元 / 折扣价： 120 元

The scope of this guide covers mineral insulating oil commonly defined as transformer oil; definition and description of reclaiming procedures; the test methods used to evaluate the progress and end point of the reclamation process, and what criteria recommended for the use of reclaimed mineral oils are considered suitable. This guide does not cover the use of mineral oil in new apparatus under warranty.

定价： 65元 / 折扣价： 56 元

This guide applies to mineral oil used in transformers, load tap changers, voltage regulators, and reactors. The guide discusses the following: a) Analytical tests and their significance for the evaluation of mineral insulating oil. b) The evaluation of new, unused mineral insulating oil before and after filling into equipment. c) The evaluation of in-service mineral insulating oil. d) Health and environmental care procedures for mineral insulating oil. e) Methods of handling and storage of mineral insulating oil. The characteristics of the mineral oils discussed in this guide do not include reclaimed or reconditioned oil installed in new equipment. The qualities of such oil, if used, should be agreed upon by the manufacturer and the user of the equipment.

定价： 65元 / 折扣价： 56 元

This guide recommends tests and evaluation procedures, as well as criteria and methods of maintenance, for natural ester-based (e.g., vegetable oil) insulating liquids. Methods of reconditioning, field applications, and diagnostics of natural ester-based insulating liquids are also described.

定价： 66元 / 折扣价： 57 元

This guide provides acceptance and maintenance criteria for insulating liquids used in transformers, tap changers, regulators and reactors.

定价： 93元 / 折扣价： 80 元

定价： 14元 / 折扣价： 12 元

The scope of this guide is to describe the requirements for handling and disposal of the transformer grade insulating liquids containing PCBs; the definition of PCB levels in electrical insulating liquids; the analytical method of detection and measurement of the PCBs in electrical insulating liquids; and regulations covering the identification and the disposal of electrical insulating liquids containing PCBs.

定价： 113元 / 折扣价： 97 元

This guide covers fire hazards from electrical distribution and utilization systems installed in industrial, residential, and public buildings/areas. This guide also describes how a practical fire hazard assessment can be established for electrical equipment containing insulating materials. The hazard assessment should be based on relevant fire or failure scenarios based on service experience and engineering analysis. The relationship between small-scale material tests and large-scale fire… read more hazard tests is discussed. read less

定价： 151元 / 折扣价： 129 元

The test procedures covered by this standard apply to the thermal endurance of solid insulating materials, including processed compositions of raw materials, before they are fabricated into insulating structures identified with specific parts of electrical equipment. Tests for specific types of insulating materials, such as wire enamel, varnish, sheet, tape, etc. are not within the scope of this standard.

定价： 65元 / 折扣价： 56 元

This guide provides recommendations for the in-service visual inspection, application, care, maintenance, and electrical and mechanical testing of insulating flexible slings, including core, insulating sheath, and attachments for use during live line work on voltages up to 1000 kV alternating current (AC) and ±800 kV direct current (DC). Testing pertains only to electrical and mechanical tests that may be performed periodically to check if there is any reduction in the electrical performance,… read more mechanical performance, and both (combined) electrical and mechanical performance of the insulating flexible sling. read less

定价： 56元 / 折扣价： 48 元

定价： 113元 / 折扣价： 97 元

This guide is intended for use in establishing a methodology to evaluate expected long-term performance of infrequently operated switch contacts used within insulating liquid-immersed transformers. These switch contacts are typically found in de-energized tapchangers, dual voltage switches, reversing switches, on-load tapchangers, and step-voltage regulators, but the test might possibly be used to evaluate any contact that is used in insulating liquids with similar operating characteristics and within similar environments.

定价： 55元 / 折扣价： 47 元

This is a standard test procedure for the thermal evaluation and qualification of electrical insulation systems (EISs) for random-wound ac electric machinery, where thermal degradation is the dominating aging factor. This procedure compares the relative thermal performance of a candidate EIS to that of a reference EIS. This standard covers insulation systems for such machinery with operating voltage of up to 600 V at 50/60 Hz. This standard provides a statistical method for establishing a… read more relative life-temperature relationship for an insulation system. To have any significance, the reference insulation system must be supported with adequate field-service data. This procedure is intended to evaluate insulation systems for use in air-cooled, random-wound ac electric machinery with "usual service conditions." This procedure, on its own, does not cover insulation systems such as exposure to conducting contaminates, radiation, inverter applications, or operation in oils, refrigerants, or other media that potentially degrade insulating materials. read less

定价： 65元 / 折扣价： 56 元