​HIGH VOLTAGE DISTRIBUTION SYSTEMS

Approved-training courses are to provide the necessary basic training and background information to prepare and enable trainees to safely discharge the duties of Authorised Persons (Electrical) in respect of the defined distribution systems. The courses are to be appropriate to the High Voltage systems and installations to be worked upon.

The basic training is to provide:

• an adequate knowledge of the rationale and content of this SHE Code;
• a thorough knowledge of, and practical experience in, the duties and responsibilities of an Authorised Person (Electrical);
• an introduction to the theory, application, operation and maintenance of the components of typical High Voltage ring and radial and Low Voltage distribution systems.

The background information is to provide an understanding of the principles involved in the design, operation and maintenance of typical High Voltage and Low Voltage distribution systems and their associated protective devices.

The course is to have duration of about five days, and the scope is to include:

• statutory requirements relating to electrical safety;
• this SHE Code;
• Authorised Person (Electrical) role and duties;
• types and functions of common High Voltage distribution switchgear;
• types and functions of other common High Voltage distribution equipment, including transformers and cables;
• types and functions of Low Voltage distribution switchgear and equipment; operation of High Voltage ring and radial distribution systems; protective devices, including relays, fuses and interlocks;
• operation and maintenance procedures for High Voltage and Low Voltage distribution equipment;
• operation and maintenance procedures for standby power supplies and equipment;
• practical exercises on switching simulated High Voltage ring and radial distribution systems; practical exercises on making High Voltage equipment safe to work on or test, including procedures appertaining to Permits to Work and Sanctions to Test; procedures for live working on or near Low Voltage equipment;
• cable detection, location and identification.

LOW VOLTAGE DISTRIBUTION SYSTEMS

Approved-training courses are to provide the necessary basic training and background information to prepare and enable trainees to safely discharge the duties of Authorised Persons (Electrical) in respect of the defined distribution systems. The courses are to be appropriate to the Low Voltage systems and installations to be worked upon.

The basic training is to provide: -

• an adequate knowledge of the rationale and content of this SHE Code;
• a thorough knowledge of, and practical experience in, the duties and responsibilities of an Authorised Person (Electrical);
• an introduction to the theory, application, operation and maintenance of the components of typical Low Voltage distribution systems.
• The background information is to provide an understanding of the principles involved in the design, operation and maintenance of typical Low Voltage distribution systems and their associated protective devices.

The course is to be of the appropriate duration and the scope is to include:

• statutory requirements relating to electrical safety;
• This SHE Code; • Authorised Person (Electrical) role and duties;
• types and functions of common Low Voltage distribution switchgear;
• operation and maintenance procedures for Low Voltage distribution equipment;
• practical exercises on switching simulated Low Voltage distribution systems;
• practical exercises on making Low Voltage equipment safe to work on or test, including procedures appertaining to Permits to Work and Sanctions to Test; procedures for live working on or near Low Voltage equipment;
• practical exercises on the isolation of standby, UPS and battery systems including the issue of permits-to-work and letters of authorisation for live working;
• testing of electrical installation to BS 7671;
• protective devices, miniature circuit breakers (MCBs), fuses and interlocks;
• monitoring of electrical safety work by staff/contractors;
• cable detection, location and identification.