Operations training
High Voltage Standard / V0 - DRAFT 2025-03-21
2. TERMS AND DEFINITIONS
Term
Definition
For the purposes of the GWO HV standard, this term refers to those with the necessary competence to operate HV switchgear in the workplace. The determination of readiness for authorisation is the responsibility of the employer. Various terms are used in different regions to indicate that a person holds a record of this competence. This person will require specific training in safe HV operations and working experience in a high voltage operational environment. Once sufficient workplace experience has been recorded, the employer should determine readiness to nominate an individual for authorisation in accordance with company SSOW and regulatory requirements locally. Requirements vary in different regions. In some but not all regions, they must also be a Qualified Electrical Person (or the local equivalent). A mechanical switching device capable of making, carrying and breaking currents under normal circuit conditions, and also making, carrying for a specified time and breaking currents under abnormal circuit conditions such as those of a short- circuit. Equipment that is suspected to be damaged and must be treated with more caution than equipment in its normal condition. For the purposes of the GWO HV standard, the term High Voltage is used for voltages normally exceeding low voltage. The exact voltage designation varies globally depending on where you work.
Authorised Person
Circuit-breaker
Deranged equipment
High Voltage
Note on use of the term High Voltage in the GWO HV standard:
Terms for low, medium and high voltage may be applied in different ways in different geographies and in other working contexts, such as at the electrical distribution and transmission network levels. For example, IEC defines high voltage as a voltage which exceeds 1000 V AC or 1500 V DC., while NFPA 70E and OSHA defines on or above 600V as high voltage working. At the electrical network level, IEC defines high voltage lines as those above 36 kV (36,000 volts), while medium voltage lines are networks with a voltage between 1 and 35 kV (1,000 and 35,000 volts).
From a global perspective, these classifications and ranges change depending on where you work.
Global Wind Organisation / www.globalwindsafety.org
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