Cable Theory
Understanding the components that make up a High Voltage underground cable is key for all those expected to terminate, splice or troubleshoot on primary cable. Voltage classes of cable will be from 15Kv up to 46Kv.
Topics Covered
 Insulation Ratings
Insulation Types
Insulation Treeing
Concentric Neutrals
Tape Shielding
Floating Neutrals
Jacket Types
Silicon Injection |
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Splicing With the ever increasing demand on system reliability and the fact that periodically cables require to be spliced, it is essential that there is a good understanding of cable components and that a level of proficiency can be demonstrated.
Topics Covered
Review of components
Tools required
Splicing sleeves styles
Splicing sleeve compaction
Cable preparation
Use of tapes
Taped Splices
Slip-on Splices
Cold Shrink Splices
Heat Shrink Splices
Repair Slices
Cable Protection |
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Terminations Cable terminations are used in many varied applications such as padmount transformers, switchgear, overhead risers, switching cubicles and in substations to name a few. Regardless where they are used, the key is a high level of cable preparation and proper installation standards for all types of terminations.
Topics Covered
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Transformers Transformers covered in this section deal primarily with single phase and three phase installations with the primary focus on being competent with different styles of transformers, fuse protection, installation practices, internal switches and tap changers. Preferable this program is done as a Hands On session either as a new installation or as a replacement job.
Topics Covered
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Switchgear As electrical systems become more complex, so does the equipment. Switchgear is an essential part of allowing system flexibility for load transfers, maintaining open points in circuits and allowing switching operations to be done at ground level. The program is intended to allow a thorough understanding of how the switchgear functions including the common bus configuration, fuse protection and gang operated switches. As some switchgear relies on SF6 and or vacuum switches, both topics are included in the overview.
Topics Covered
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Potential Indicating Devices
Potential indicating devices are used on a daily basis for potential testing, to check phasing and during trouble shooting operations. The focus of this session is to discuss
the theory of operation and make certain the appropriate piece of equipment is being used for the application at hand.
Topics Covered
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