GSO IEC 62055-31:2024
IEC 62055-31:2022
Electricity metering - Payment systems - Part 31: Particular requirements - Static payment meters for active energy (classes 0,5, 1 and 2)
GSO IEC 62055-31:2024 Files
GSO IEC 62055-31:2024 Scope
This part of IEC 62055 applies to
newly manufactured, static watt-hour payment meters of accuracy classes 0,5, 1
and 2 for direct connection, for the measurement of alternating current
electrical energy consumption of a frequency in the range 45 Hz to 65 Hz that
include a supply control switch for the purpose of interruption or restoration
of the electricity supply to the load in accordance with the current value of
the available credit maintained in the payment meter. It does not apply to
static watt-hour payment meters where the voltage across the connection
terminals exceeds 1 000 V (line-to-line voltage for meters for
polyphase systems).
It applies to payment meters for indoor
application, operating under normal climatic conditions where the payment meter
is mounted as for normal service (i.e. together with a specified matching
socket where applicable).
Payment meters are implementations where
all the main functional elements are incorporated in a single enclosure,
together with any specified matching socket. There are also multi-device
payment metering installations where the various main functional elements, such
as the measuring element, the user interface unit, token carrier interface, and
the supply control switch are implemented in more than one enclosure, involving
additional interfaces.
Functional requirements that apply to
payment meters are also defined in this document, and include informative basic
functional requirements and tests for the prepayment mode of operation in Annex A.
Allowances are made for the relatively wide range of features, options,
alternatives, and implementations that may be found in practice. The diverse
nature and functionality of payment meters prevent the comprehensive
specification of detailed test methods for all of these requirements. However,
in this case, the requirements are stated in such a way that tests can then be
formulated to respect and validate the specific functionality of the payment
meter being tested.