IEEE 576-1989 pdf free – IEEE Recommended Practice Installation, Termination, and Testing of Insulated Power Cable as Used in the Petroleum and Chemical Industry.
IEEE 576 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 be avoided by designing cable layouts with the installation limits of this recommended practice.
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.
3.5 Check List Prior to Pulling Cable
1) Be sure there is adequate clearance between duct or conduit diameter and cable diameter. Do not exceed recommended b4percent till” requirements.
2) Use adequate lubrication of the proper type to reduce friction in conduit and duct pulls. The grease and oil type lubricants used on lead sheathed cables should not be used on non-metallic sheathed cables. There are a number of commercially available wire pulling compounds that are suitable for use with non-leaded cables.
3) Avoid sharp bending of the cable at the first pulley in overhead installations by locating the pay-off reel far enough away from the first pulley that the lead-in angle is kept relatively flat.
4) After installation, check to determine that end seals are still intact and have not been damaged to the point where water could enter. Apply plastic or rubber tape to help protect against invisible damage if the cable will be subjected to immersion or rain. This is particularly important if there will be a delay of some time between the pulling operation and splicing and terminating.
5) In installing armored cables on rack, use sufficient rollers to prevent the cable from dragging on the rack, which might result in excessive tension. Avoid sharp bends in the cable by using one 3-sheave pulley at 45 degree bends and multi-roller sheave at 90 degree bends.
6) Keep adequate tension on the messenger in aerial cable installations to prevent sharp bends at pulleys. Do not release the tension on the messenger until it is secured to poles on both ends.
3.6 Methods of Gripping Cables for Pulling
3.6.1 General
In general. insulated cables may be gripped either directly by the conductors or by a basket-weave pulling grip applied over the cables. The method used depends on the anticipated maximum pulling tension. When pulls are relatively light. a basket-weave grip is used. Heavier pulls will require connecting to the conductor either by means of pulling eyes or by forming a ioop with the conductor itself. In some instances, it is desirable to use a grip over the outer covering in addition to the conductor connection to prevent any slippage of one with respect to the other.IEEE 576-1989 pdf free download.