IEC PAS 62055-41:2003

IEC/PAS 62055-41
Edition 1.0
2003-09
Electricity metering –
Payment metering systems –
Part 41:
Standard Transfer Specification

PUBLI C LY AVAI LABLE SPECI F I CATI O N

Reference number
IN TER N A TION AL
E L E C T R OT E CHNI CA L
IEC/PAS 62055-41
C O MMI S S I O N
IEC/PAS 62055-41
Edition 1.0
2003-09
Electricity metering –
Payment metering systems –
Part 41:
Standard Transfer Specification

PUBLI C LY AVAI LABLE SPECI F I CATI O N

Reference number
IN TER N A TION AL
E L E C T R OT E CHNI CA L
IEC/PAS 62055-41
C O MMI S S I O N
CONTENTS
FOREWORD. ii

Rationalized User Specification –

Electricity sales systems
Part 6: Interface standards
Section 6: Standard transfer specification/Credit dispensing unit – Electricity dispenser –

Categories of token and transaction data fields. 1

Section 7: Standard transfer specification/Credit dispensing unit – Electricity dispenser –
Token encoding and data encryption and decryption . 17

Section 8: Standard transfer specification/Disposable magnetic token technology – Token
encoding format and physical token definition. 49

Section 9: Standard transfer specification/Numeric token technology – Token encoding
format and physical token definition . 63

Part 7: Standard transfer specification/Management of cryptographic keys. 74

Annex – Standard Transfer Specification – Synopsis. 103

Page i
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
ELECTRICITY METERING – PAYMENT METERING SYSTEMS –

Part 41: Standard Transfer Specification

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all
national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-

operation on all questions concerning standardization in the electrical and electronic fields. To this end and in

addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees;
any IEC National Committee interested in the subject dealt with may participate in this preparatory work.
International, governmental and non-governmental organizations liaising with the IEC also participate in this
preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance
with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment
declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
A PAS is a technical specification not fulfilling the requirements for a standard, but made available to the
public and established in an organization operating under given procedures.
IEC-PAS 62055-41 was submitted by the STS (Standard Transfer Specification) Association and has been
processed by IEC technical committee 13: Equipment for electrical energy measurement and load control.
The text of this PAS is based on the This PAS was approved for

following document: publication by the P-members of the
committee concerned as indicated in
the following document:
Draft PAS Report on voting
13/1298/PAS 13/1301/RVD
Following publication of this PAS, the technical committee or subcommittee concerned will investigate the
possibility of transforming the PAS into an International Standard.
An IEC-PAS licence of copyright and assignment of copyright has been signed by the IEC and the STS
association and is recorded at the Central Office.
This PAS shall remain valid for no longer than 3 years starting from 2003-09. The validity may be
extended for a single 3-year period, following which it shall be revised to become another type of
normative document, or shall be withdrawn.
Page ii
NRS 009-6-6:2002
ICS 29.240.99; 91.140.50
Edition 1.1
Edition 1: Incorporating Amendment No. 1:2002
ISBN 0-626-14112-5
Rationalized User Specification

ELECTRICITY SALES SYSTEMS
Part 6: Interface standards
Section 6: Standard transfer
specification/Credit dispensing unit —
electricity dispenser — Categories of
token and transaction data fields

Requirements for applications in the
Electricity Supply
Industry
N R S
Gr 8
®Standard Transfer Specification

2 Copyright © 2003, STS; 2003, IEC

This Rationalized User Specification is

issued by the NRS Project
on behalf of the
User Group given in the foreword

and is not a standard as contemplated in the Standards Act, 1993 (Act 29 of 1993).

Rationalized user specifications allow user
organizations to define the performance and quality
requirements of relevant equipment.

Rationalized user specifications may, after a certain

application period, be introduced as national standards.

Amendments issued since publication
Amdt No. Date Text affected
1 May 2002 Notice: Information added on STS compliance.
Foreword.
Clause 2: Normative references updated.
Clause 3: Note added to clarify abbreviation “ED”.
4.3.2: Reference to NRS 009-4-2 changed to
annex A of NRS 009-6-7.
Amendment 1 was compiled to aid understanding of the specification internationally, in preparation for its
submission to the IEC, for consideration as an IEC PAS. This consolidated edition 1.1 is technically
identical to, and replaces, NRS 009-6-6:1997, which is published by the SABS under ISBN 0-626-11656-
2, for which the SABS holds publishing copyright.

Correspondence to be directed to Printed copies obtainable from

South African Bureau of Standards South African Bureau of Standards
(Electrotechnical Standards) Private Bag X191

Private Bag X191 Pretoria 0001
Pretoria 0001
Telephone: (012) 428-7911
Fax: (012) 344-1568
E-mail: sales@sabs.co.za
Website: http://www.sabs.co.za

COPYRIGHT RESERVED
Printed on behalf of the NRS Project in the Republic of South Africa
by the South African Bureau of Standards
1 Dr Lategan Road, Groenkloof, Pretoria
®Standard Transfer Specification

NOTICE
Revised February 2003
™
This section of NRS 009-6 specifies requirements that are part of the standard transfer specification
(STS). The intellectual property rights of the STS are owned by the STS Association.
The cryptographic algorithms published in this section are those for existing installations and future
releases shall make provision for a choice of several state of the art algorithms for implementation
according to the strength of the security required in the target installation. It has to be noted that this
specification already allows for such alternative algorithms by inference of the data element “Algorithm
Code” (see NRS009-6-6 section 4.3.5 ).
Implementation of an STS compliant system will require access to encryption and decryption tables and
the STS encryption keys, which are made available under license conditions through membership of the
STS Association. Details of requirements to become a member of the STS Association can be obtained
from the contact details given below.
Amdt 1
Suppliers who are to claim that their equipment complies with the STS are required to have the relevant
equipment accredited by the STS Association or its agent. Such equipment will be permitted to carry a
mark that signifies compliance with the STS.
Application for accreditation of equipment as compliant with the STS can be made to the
STS Association:
email@sts.org.za
Amdt 1
Fax number +27(21) 914 3930
Postal address:
PO Box 2332
Durban
South Africa
Further information concerning the STS Association can be obtained from its website:
http://www.sts.org.za
Amdt 1
A Section 21 “not for gain” company incorporated in the Republic of South Africa.
®Standard Transfer Specification

4 Copyright © 2003, STS; 2003, IEC

This page intentionally left blank

®Standard Transfer Specification

1 NRS 009-6-6:2002
Contents
Page
Foreword. 2

Introduction . 4

Key words. 5

1 Scope. 7

2 Normative references. 7
3 Terms, definitions and abbreviated terms. 8
4 Requirements. 8
4.1 General. 8
4.2 Categories of token. 8
4.3 Transaction data fields . 9

®Standard Transfer Specification

6 Copyright © 2003, STS; 2003, IEC

NRS 009-6-6:2002 2
Foreword
This section of NRS 009-6 has been prepared on behalf of the Electricity Suppliers Liaison Committee

(ESLC) and has been approved by it for use by supply authorities in South Africa.

Amendment 1 to this section of NRS 009-6 provides for direct cross-references to NRS 009-4-2, which is
not part of the standard transfer specification. The requirements of NRS 009-4-2 that are relevant to this
section of NRS 009-6 have been included in an annex to NRS 009-6-7.

Amdt 1
NRS 009 is based on Eskom specification MC114, Requirements specification for a common vending
system for electricity dispensing systems, and consists of the following parts, under the general title
Electricity sales systems:
Part 0: Standard transfer specification — Synopsis. (Under consideration.)
Part 1: Glossary and system overview. (Withdrawn, superseded by SABS 1524-0.)
Part 2: Functional and performance requirements.
Section 1: System master stations.
Section 2: Credit dispensing units.
Section 3: Security modules.
Section 4: Standard token translators.
Section 5: Error handling.
Part 3: Database format.
Part 4: National electricity meter cards and associated numbering standards.
Section 1: National electricity meter cards.
Section 2: National electricity meter numbers.
Part 5: Testing of subsystems.
Part 6: Interface standards.
Section 1: Credit dispensing unit — Standard token translator.
Section 2: System master station — main frame.
Section 3: System master station — Credit dispensing unit (previously NRS 009-3).
Section 4: Data transfer by physical media — System master station — Credit dispensing
unit.
Section 5: Not allocated
Section 6: Standard transfer specification — Credit dispensing unit — Electricity dispenser —
Categories of token and transacti
...