High-voltage operating responsibility covers safe operation, switching, maintenance and reporting to the employer. This guide explains scope and authorization.
What does operating responsibility cover?
The EMO Regulation on High-Voltage Installation Operating Responsibility describes tasks such as safety measures, oversight of fault response, switching, reporting to the employer, arranging tests and maintenance, and ensuring safety equipment is available.
The service should not be treated as a periodic visit or report delivery alone. Define system boundaries, operating procedures, fault response and communication with facility staff at the outset.
Authorization and installation boundaries
EMO's regulation requires an engineer undertaking high-voltage operating responsibility to hold an EMO-issued YGTİS authorization. Confirm its current validity and applicable installation scope when appointing a provider.
Clarify interfaces such as the supply point, HV equipment, LV main switch and utility boundary through the single-line diagram and agreement. These boundaries vary by connection arrangement.
Safe operation and records
A current single-line diagram, switching/access procedures, staff duties and emergency communication are parts of one operating arrangement. Track maintenance and test records alongside equipment changes and faults.
Work on energized systems should be limited to authorized, trained personnel within defined duties. The responsible engineer establishes safety methods and reporting to the employer under applicable rules.
Define before service starts
At quotation stage, share transformer/switchgear inventory, facility capacity, connection diagrams, available tests, maintenance history and operator information. Agree in writing on service frequency, reporting, emergency calls and authorization limits.
Operating responsibility does not replace design approval, periodic inspection or transfer all employer OHS duties. Each party's responsibilities remain subject to contract and applicable rules.
Frequently Asked Questions
Which installations require an HV responsible engineer?
EMO's regulation defines scope for high-voltage installations above 1 kV; confirm boundaries for each facility's connection.
Does the responsible engineer need authorization?
EMO's regulation requires a YGTİS authorization for engineers undertaking the service.
Is operating responsibility just a monthly visit?
No. It may include safe operation, switching, maintenance/test arrangements, fault oversight and reporting; frequency and duties should be defined in the agreement.
Does operating responsibility replace periodic inspection?
No. Operating service and statutory periodic inspection are distinct scopes and records.
Which documents should be prepared before service?
Prepare the current single-line diagram, transformer/switchgear data, maintenance/test records, operating procedures and current authorized-person details.
Official sources and further reading
This article is for general information. Confirm document names, application steps and current requirements with the relevant authority, utility and applicable regulations.
