Saudi Arabian Grid Code May 2024

The Metering Equipment shall be restored to service and proved to be operating within the prescribed limits of accuracy as soon as is reasonably practicable. Main and Check Metering 7.10.1 For each Connection, Main and Check Metering shall be provided. Main and Check Meters shall be from different manufacturers and shall operate from separate CT and VT windings. 7.10.2 The provisions of this chapter shall apply equally to Main and Check Meters. 7.10.3 CT and VT windings and cables connecting such windings to Main Meters shall be dedicated for such purposes and such cables and connections shall be securely sealed. 7.10.4 The Main Meter, Check Meter and additional burdens shall have separately fused VT supplies. 7.10.5 The loss of voltage to the Meters should give an alarm. Timekeeping 7.11.1 All Metering Installation shall record time, based on Saudi Arabian Standard Time. 7.11.2 The commencement of each Demand Period shall be within ±10 seconds of the true time. 7.11.3 The duration of each Demand Period shall be accurate to within ± 0.1% except where time synchronization has occurred in that period. Chapter 7 - Metering Code The Saudi Arabian Grid Code Updated Version: May 2024 Metering Access and Sealing 7.12.1 Metering Equipment and associated communications Equipment shall be located in a dedicated and secure cabinet located in an area readily accessible, free from obstructions, and well-lit by artificial light(s). 7.12.2 The cabinet shall conform to service conditions as specified in TSP’s Standard 01-TMSS-01. These design measures shall at least include protection from moisture and dust and from physical damage including vibration and provide appropriate temperature control. 7.12.3 The cabinet shall be equipped with a lock and shall be clear-fronted and sealed by the TSP. The control of this sealing shall conform to procedures as laid down by the TSP from time to time. This seal can only be broken by or with the consent of the TSP. 7.12.4 Internal access to Metering Equipment, enclosures, and the associated communications equipment shall be in accordance with procedures specified by the TSP. 7.12.5 The Users shall permit the TSP or its representatives, the rights to enter upon, pass through, and remain upon any part of such User property to the extent necessary for the purposes of performance under this Code. Users shall make all reasonable arrangements and provisions to facilitate the TSP or its representatives in exercising such rights. 7.12.6 The right of access provided pursuant to (7.12.5) above shall also include the right to bring any vehicles, Plants, machinery and maintenance or other materials as may be reasonably required by the TSP for the performance of obligations under the Metering Code. 7.12.7 The seals that the TSP shall use on Metering installations must be strong and durable, not prone to easy or accidental damage or early deterioration owing to weather or operating environment. 7.12.8 Seals shall be capable of being fixed easily and shall be designed and constructed to prevent undetectable tampering under normal usage and must not permit their removal or undoing without breaking. 7.12.9 Seals shall be identifiable by unique numbers and TSP logos that are legible and traceable to those affixing these. Chapter 7 - Metering Code The Saudi Arabian Grid Code Updated Version: May 2024 Damage, Tampering, or Unauthorized Interference with Metering Equipment 7.13.1 The TSP shall examine Metering installations periodically to ensure that all security seals are intact and that the Metering Equipment is functioning properly and without any signs of damage, tampering, or unauthorized interference.