IEEE 576:1989 pdf download.IEEE Recommended Practice for Installation, Termination, and Testing of Insulated Power Cable as Used in the Petroleum and Chemical Industry.
This recommended practice provides a guide to installation, splicing, termination, and field-proof testing of cable systems for the petrochemical industry. It is not intended to be a design document, although many of the problems of installation can he avoided by designing cable layouts with the installation limits of this recommended practice.
1.2 Purpose
The purpose of this recommended practice is to provide a uniform guide of installation limits that will avoid premature cable failure due to improper installation and mechanical damage during installation. It is intended to provide a reference that can be specified for cable installations.
1.3 References
The following publications shall he used in conjunction with this standard:
[I] ANSI/IEEE Std 404-1986, IEEE Standard for Cable Joints for Use with Extruded Dielectric Cable Rated 5000 V Through 46 000 V and Cable Joints for Use with Laminated Dielectric Cable Rated 2500 Through 500 000 V.1
[2] Engineering Data, Copper and Aluminum Conductor Electrical Cables. Ramsey, NJ: The Okonite Company.
[3] IEEE Std 4(X)-l980. IEEE Guide for Making High-Direct-Voltage Tests on Power Cable Systems in the Field.2
[4] Installation Practices for Cable Raceway Systems. Ramsey, NJ: The Okonite Company.
[5] ANSI/NFPA 70, National Electrical Code. Batterymarch Park, Quincy. MA: National Fire Protection Association,
1986.
2. Definitions
sidewall pressure: The pressure exerted on an insulated cable as the result of the cable’s being pulled around a bend during installation.
occupancy factor: The factor by which the forces are adjusted due to cable spacing in a conduit. Sometimes called weight correction factor.
jamming: The wedging of cables in a conduit when three cables lie side by side in a fiat plane. minimum bending radius: The minimum radius that an insulated cable can be bent that will not cause mechanical damage during installation.
electrical connection: The point at which two or more electrical conductors are joined together to establish electrical continuity.
3. Pulling Tensions
3.1 Maximum Pulling Tension on Cable
3.1.1 Pulling Eye Attachment
With pulling eye attached to copper conductors, the maximum pulling strain should not exceed 0.008 times circularmu area (CM). With pulling eye attached to aluminum conductors, the maximum pulling strain should not exceed 0.006 times circular-mu area (CM).
n = number of conductors
CM = circular mil area of each conductor
Maximum limitation for this calculation is 5000 lb for single conductor (I/C) cables and 6000 lb for multiple conductor cables.
3.1.2 Cable Grip Over Lead Sheath
With cable grip over lead sheath, the maximum pulling strain should not exceed 1500 lbs/sq in of lead sheath crosssectional area for commercial lead.
3.1.3 Cable Grip Over Non-Leaded Cable.IEEE 576 pdf download.