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This guide provides a summary of the methods for detection, mitigation, and control of concentric neutral corrosion in medium-voltage, unjacketed, underground distribution cable installed direct buried or in conduit. The causes of corrosion in cable concentric neutral wires and straps and the methods available to detect this corrosion are described. The purpose of the concentric neutral and the consequences of significant loss of the concentric neutral are discussed. Recommendations are made for the mitigation and control of the cable concentric neutral corrosion.

Electric cables.

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Superseded by 576-2000. A guide to installation, splicing, termination, and field-proof testing of cable systems is provided. The aim is to avoid premature cable failure due to improper installation and mechanical damage during installation, and to provide a reference that can be specified for cable installations. This standard is not intended to be a design document; many of the problems of installation can be avoided by designing cable layouts with the installation limits of this recommended practice.

Electric cables.

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Various field test methods that are currently available or under development are listed in this guide. The guide covers shielded, insulated power cable systems rated 5 kV and above. The guide describes the tests and gives advantages and disadvantages, suggested applications, and typical results. Complete guides covering some of the test methods listed are available in the form of IEEE 400 "point" documents. Keywords: field testing, IEEE 400, power cable system.

Electric cables

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The recommended practices and procedures for direct voltage acceptance and maintenance testing of shielded, laminated dielectric insulated power cable systems rated 5 kV and above are presented in this guide. It applies to all types of laminated power cable systems such as paper insulated, lead covered, pipe-type, and pressurized cables that are intended for the transmission or distribution of electric power. The tabulated test levels assume that the cable systems have an effectively grounded neutral system or a grounded metallic shield.

Electric cables

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Very low frequency (VLF) withstand and other diagnostic tests and measurements that are performed using VLF energization in the field on shielded power cable systems are described in this guide. Whenever possible, cable systems are treated in a similar manner to individual cables. Tables are included as an aid to identifying the effectiveness of the VLF ac voltage test for various cable system insulation problems.

Electric cables