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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

*Please note, we are a 3rd party booker for this course which is delivered by National Grid Electricity Transmission*

The National Grid NSI9 course provides contractors, engineers, and Competent Persons with the knowledge and authorisation required to safely test high-voltage (HV) equipment in compliance with National Grid Electricity Transmission Safety Rules and NSI 9 (Issue 4, 2024).

This course is essential for personnel operating test sets rated over 1kV, including insulation resistance testers (5kV/10kV), HV withstand testing, footprint testing, and capacitance/tan delta (loss angle) equipment. Delegates gain practical understanding and safety awareness to prevent electrical hazards during HV testing.

The National Grid Authorisation Training can only be booked either directly with NG or through the live NG Booking Portal via an approved provider, such as ourselves.

To Book this training please contact us on 01926 674340 or email Training@Pragmatic-consulting.co.uk

This course is typically delivered for groups of four or more delegates.
If you have fewer than four learners, please contact us — in many cases we can coordinate availability with other contractors to arrange a suitable training date.

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

National Grid NSI9

Valid for

Awarding Body

Who should Attend This Course

This course is essential for:

  • Contractors and personnel conducting HV testing on National Grid assets
  • Technicians using high-energy test sets (>1kV)
  • Those operating under NSI 30 (Appointment of Persons)
  • Engineers responsible for issuing or working under Sanction for Work or Permits for Work

Prerequisites

  • An NG Competent Person Substation
  • Evidence of two occasions in the application and removal of Primary Earth(s) under a Sanction for Work and under the Personal
  • Supervision of an NSI 9 authorised Competent Person within last 12 months
  • If you have previously held NSI9 within the last 2 years, then additional evidence is not normally required.

What To Have With You To Attend The Course

Assessment

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

Course Content

The 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

Useful Documentation:

  • National Grid NSI 30
  • National Grid Safety Rules and Guidance
  • NSI 9 (Issue 4, 2024)

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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