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NG NSI9 Testing High Voltage Equipment

Course Duration:
Half Day
Format:
In-Person
Location:
Eakring, Nottinghamshire, Blackley, Manchester, Graveley, Hertfordshire, Melksham, Wiltshire, Littlebrook, Kent, Langley Park, Durham
Home > Training Courses > National Grid Training Courses > NG NSI9 Testing High Voltage Equipment

Course Overview

The National Grid NSI 9 Testing High Voltage (HV) Equipment course is a 1/2 day Computer Based Training (CBT) programme designed to provide essential knowledge for personnel involved in the testing of high-voltage equipment within National Grid environments.

The course focuses on ensuring safety, increasing hazard awareness, and maintaining full compliance with National Grid Safety Rules and NSI 9 Testing High Voltage Apparatus. It is intended for individuals who require an understanding of the controls and precautions necessary when undertaking or assisting with HV testing activities.

The National Grid Authorisation Training can only be booked either directly with National Grid or through the live NG Booking Portal via an approved provider, such as ourselves.
To book this training, please contact 01926 674340 or email Training@Pragmatic-consulting.co.uk.

Course Duration:
Half Day
Format:
In-Person
Location:
Eakring, Nottinghamshire, Blackley, Manchester, Graveley, Hertfordshire, Melksham, Wiltshire, Littlebrook, Kent, Langley Park, Durham

Certification Awarded

National Grid NSI9

Valid for

One Year

Awarding Body

Who should Attend This Course

The NSI 9 –Testing High Voltage (HV) Equipment training is intended for individuals who are required to carry out or assist with the testing of high-voltage apparatus within substations or on the transmission system.

Prerequisites

  • An Valid NG Competent Person Substations

What To Have With You To Attend The Course

Photo ID – such as Passport or Driving Licence

Assessment

Candidates are evaluated on their understanding of HV safety, documentation control, and NSI 9 testing protocols.

Course Content

The NSI 9 Testing High Voltage Equipment course covers the following topics:

NSI9 Scope and Requirements

  • Understanding NSI9 and its supporting documentation
  • Roles and responsibilities of Competent Persons under NSI9

Risk Identification and Mitigation

  • Hazards including electric shock, burns, arc flash, and induced voltage
  • Safe working practices across control boundaries

HV Test Procedures

  • Insulation resistance, HV withstand, footprint, and capacitance/tan delta testing
  • Coordination with Senior Authorised Person and Control Person
  • Following Sanction for Work and Permit for Work requirements

Authorisation and Compliance

  • NSI9 authorisation matrix for contractors (Appendix A)
  • Case studies on remote-end testing and physical separation

Equipment Scope Clarification

  • NSI9 does not cover micro-ohmmeters, 500V/1000V IR testers, or ROMP operations

Learning Outcomes
By the end of the course, delegates will be able to:

  • Understand and apply NSI9 procedures for HV testing
  • Identify and mitigate hazards associated with high-voltage test operations
  • Coordinate testing under Permit for Work/Sanction for Work requirements
  • Operate test sets safely across control boundaries
  • Demonstrate competence in NSI9-authorised HV testing tasks

Frequently Asked Questions

What type of test sets fall under NSI 9?

Any HV test set above 1kV output (e.g., 5kV/10kV insulation resistance testers, footprint, withstand, and tan delta tests) requires NSI 9 authorisation.

Do contractors need to be authorised under NSI 9?

Only if the testing interferes with safety precautions. Otherwise, contractors may hold a Permit for Work under other authorisations.

Can I issue a Sanction for Work if I hold NSI 9?

es, but only if authorised under NSI 30 and NSI 9, and you follow the correct switching and logging procedure.

Is NSI 9 valid outside of National Grid sites?

It is specific to National Grid infrastructure but demonstrates HV testing competence recognised by many other network operators.

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