GB 17167-2025General rules for energy measuring instrument equipping and managing of energy user (English PDF)

4.1 Types and measurement range of energy

4.1.1 The types of energy shall comply with national statistical laws, regulations and relevant standards, including primary energy, secondary energy and energy-carrying working medium. NOTE. Energy-carrying working medium refers to a medium that can absorb or release energy due to changes in its own state parameters.

4.1.2 The range of energy measurement includes.

a) Energy and energy-carrying working mediums input into energy users, sub- energy users and energy-consuming equipment;

b) Energy and energy-carrying working mediums output from energy users, sub- energy users and energy-consuming equipment;

c) Energy and energy-carrying working mediums used (consumed) by energy users, sub-energy users and energy-consuming equipment;

d) Energy and energy-carrying working mediums produced by energy users, sub- energy users and energy-consuming equipment;

e) Surplus energy that is recycled and utilized by energy users, sub-energy users and energy-consuming equipment.

4.2 Principles for equipping of energy measuring instruments

4.2.1 The requirements for energy classification measurement shall be met.

4.2.2 The requirements for energy users to implement energy classification and sub- item assessment and statistical accounting shall be met.

4.2.3 The effective measurement range of energy measuring instruments shall be able to cover the actual needs of energy measuring.

4.2.4 It shall meet the requirements of energy users to achieve refined energy management, and gradually upgrade and equip intelligent energy measuring instruments with automatic collection and remote transmission functions.

4.2.5 Key energy users shall be equipped with necessary portable energy detection instruments to meet the requirements of self-inspection.

4.3 Requirements for the equipping ratio of energy measuring instruments

4.3.1 The equipping ratio of energy measuring instruments is calculated according to formula (1). Where. Rp -- Equipping ratio of energy measuring instruments; Ns -- The actual number of energy measuring instruments installed; N1 -- Theoretical requirement of energy measuring instruments; Theoretical requirement of energy measuring instruments refers to the number of measuring instruments required to measure the total value of energy input into and output from the energy user, as well as the number of measuring instruments required to measure the energy value of main sub-energy users and main energy-consuming equipment in accordance with the corresponding energy consumption (or power) limit value requirements.

4.3.2 The energy consumption (production energy or transport energy) of the main sub- energy users shall be greater than or equal to one or more corresponding energy consumption limit values in Table 1. Sub-energy users that do not reach the energy consumption (or power) limit values in Table 1 are allowed to be included in the energy measurement assessment according to relevant requirements. If there are indeed no conditions for achieving separate measurements, it is allowed to use the calculation (estimation) method to achieve energy accounting, and the accounting method and relevant original data shall be recorded.

4.3.3 The energy consumption (or power) of a single main energy-consuming equipment shall be greater than or equal to one or more corresponding energy consumption (or power) limit values in Table 2. For energy-consuming equipment that does not reach the energy consumption (or power) limit values in Table 2, energy-consuming equipment with large usage and cumulative energy consumption, or key equipment in energy-consuming units, may be included in the energy measurement assessment according to relevant requirements. If there are indeed no conditions for achieving separate measurements, it is allowed to use the

5.3 Energy measuring instruments

5.3.1 Energy users shall have a complete list of energy measuring instruments. The list shall list the name, measurement object, model and specification, accuracy level/maximum permissible error, measurement range, manufacturer, factory number, energy user management number, installation and use location, and status (qualified, approved for use, discontinued, etc.) of the energy measuring instruments. Main sub- energy users and main energy-consuming equipment shall have independent sub-lists of energy measuring instruments.

5.3.2 Energy users shall establish energy metering instrument files, including.

a) Instructions for use of measuring instruments;

b) Factory certificate of measuring instrument;

c) Relevant verification (calibration) certificates or test reports of the measuring instrument for the last two consecutive cycles;

d) Measuring instrument maintenance records;

e) Other relevant information on measuring instruments.

5.3.3 Energy measuring instruments of energy users shall be regularly verified (calibrated) in accordance with relevant regulations, and the verification (calibration) results shall be confirmed.

5.3.4 Energy users that compare or evaluate their energy measuring instruments by themselves shall have valid and controlled documents (including procedure documents and work instructions) as the basis and execute in accordance with controlled documents.

5.3.5 Any energy measuring instrument that fails to meet the requirements after verification (calibration), comparison, or evaluation, or has exceeded its period, shall be stopped from use and a deactivation mark shall be affixed.