EN 50600-4-7:2020

SLOVENSKI STANDARD
01-junij-2020
Informacijska tehnologija - Naprave in infrastruktura podatkovnih centrov - 4-7.
del: Faktor učinkovitosti hlajenja
Information technology - Data centre facilities and infrastructures - Part 4-7: Cooling
Efficiency Ratio (CER)
Ta slovenski standard je istoveten z: EN 50600-4-7:2020
ICS:
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50600-4-7

NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2020
ICS 35.020; 35.160; 35.110
English Version
Information technology - Data centre facilities and infrastructures
- Part 4-7: Cooling Efficiency Ratio
Technologie de l'information - Installation et infrastructures Informationstechnik - Einrichtungen und Infrastrukturen von
de centres de traitement de données - Partie 4-7: Taux Rechenzentren - Teil 4-7: Wirkungsgrad der Kühlung (CER)
d'efficacité de refroidissement
This European Standard was approved by CENELEC on 2020-02-10. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50600-4-7:2020 E
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 7
3.1 Terms and definitions . 7
3.2 Abbreviations. 7
3.3 Symbols . 8
4 Applicable area of the data centre . 8
5 Determination of Cooling Efficiency Ratio . 8
5.1 Definition of CER . 8
5.2 Determining total energy use in multi-purpose buildings using CER . 9
6 Measurement of Cooling Efficiency Ratio . 10
6.1 General .10
6.2 Requirements .10
6.3 Recommendations .10
7 Reporting of CER . 10
7.1 General .10
7.2 Requirements .10
7.3 Recommendations .11
Annex A (informative) Correlation of CER and other KPIs . 12
Annex B (normative) Examples of usage of CER. 13
Annex C (informative) Parameters influencing CER. 14
Annex D (normative) Derivatives of CER . 15
Bibliography . 18
Figures
Figure 1 — Schematic relationship between the EN 50600 series of documents . 5
Figure 2 — Heat loads in multipurpose buildings and energy used for cooling . 9
Figure D.1 — Example of measured CEF and it’s derivatives . 17
Tables
Table A.1 — Terms of efficiency for cooling machines . 12

European foreword
This document (EN 50600-4-7:2020) has been prepared by CLC/TC 215 “Electrotechnical aspects of
telecommunication equipment”.
The following dates are fixed:
• latest date by which this document has (dop) 2021-02-10
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2023-02-10
standards conflicting with this document
have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission and
the European Free Trade Association.
Introduction
The unrestricted access to internet-based information demanded by the information society has led to an
exponential growth of both internet traffic and the volume of stored/retrieved data. Data centres are housing
and supporting the information technology and network telecommunications equipment for data processing,
data storage and data transport. They are required both by network operators (delivering those services to
customer premises) and by enterprises within those customer premises.
Data centres need to provide modular, scalable and flexible facilities and infrastructures to easily
accommodate the rapidly changing requirements of the market. In addition, energy consumption of data
centres has become critical both from an environmental point of view (reduction of carbon footprint) and with
respect to economic considerations (cost of energy) for the data centre operator.
The implementation of data centres varies in terms of:
a) purpose (enterprise, co-location, co-hosting, or network operator facilities);
b) security level;
c) physical size;
d) accommodation (mobile, temporary and permanent constructions).
The needs of data centres also vary in terms of availability of service, the provision of security and the
objectives for energy efficiency. These needs and objectives influence the design of data centres in terms of
building construction, power distribution, environmental control and physical security. Effective management
and operational information is required to monitor achievement of the defined needs and objectives.
This series of European Standards specifies requirements and recommendations to support the various
parties involved in the design, planning, procurement, integration, installation, operation and maintenance of
facilities and infrastructures within data centres. These parties include:
1) owners, facility managers, ICT managers, project managers, main contractors;
2) architects, consultants, building designers and builders, system and installation designers;
3) facility and infrastructure integrators, suppliers of equipment;
4) installers, maintainers.
At the time of publication of this document, the EN 50600 series will comprise the following standards and
documents:
— EN 50600-1, Information technology — Data centre facilities and infrastructures — Part 1: General
concepts;
— EN 50600-2-1, Information technology — Data centre facilities and infrastructures — Part 2-1: Building
construction;
— EN 50600-2-2, Information technology — Data centre facilities and infrastructures — Part 2-2: Power
supply and distribution;
— EN 50600-2-3, Information technology — Data centre facilities and infrastructures — Part 2-3:
Environmental control;
— EN 50600-2-4, Information technology — Data centre facilities and infrastructures — Part 2-4:
Telecommunications cabling infrastructure;
— EN 50600-2-5, Information technology — Data centre facilities and infrastructures — Part 2-5: Security
systems;
— EN 50600-3-1, Information technology — Data centre facilities and infrastructures — Part 3-1:
Management and operational information;
— EN 50600-4-1, Information technology — Data centre facilities and infrastructures — Part 4-1: Overview
of and general requirements for key performance indicators;
— EN 50600-4-2, Information technology — Data centre facilities and infrastructures — Part 4-2: Power
Usage Effectiveness;
— EN 50600-4-3, Information technology — Data centre facilities and infrastructures — Part 4-3: Renewable
Energy Factor;
— FprEN 50600-4-6, Information technology — Data centre facilities and infrastructures — Part 4-6: Energy
Reuse Factor
— FprEN 50600-4-7, Information technology — Data centre facilities and infrastructures — Part 4-7: Cooling
Efficiency Ratio;
— CLC/TR 50600-99-1, Information technology — Data centre facilities and infrastructures — Part 99-1:
Recommended practices for energy management;
— CLC/TR 50600-99-2, Information technology — Data centre facilities and infrastructures — Part 99-2:
Recommended practices for environmental sustainability;
— CLC/TR 50600-99-3, Information technology — Data centre facilities and infrastructures — Part 99-3:
Guidance to the application of EN 50600 series
The inter-relationship of the standards within the EN 50600 series is shown in Figure 1.

Figure 1 — Schematic relationship between the EN 50600 series of documents
EN 50600-2-X standards specify requirements and recommendations for particular facilities and
infrastructures to support the relevant classification for “availability”, “physical security” and “energy efficiency
enablement” selected from EN 50600-1.
EN 50600-3-X documents specify requirements and recommendations for data centre operations, processes
and management.
EN 50600-4-X documents specify requirements and recommendations for key performance indicators (KPIs)
used to assess and improve the resource usage efficiency and effectiveness, respectively, of a data centre.
In today’s digital society data centre growth, and power consumption in particular, is an inevitable
consequence and that growth will demand increasing power consumption despite the most stringent energy
efficiency strategies. This makes the need for key performance indicators that cover the effective use of
resources (including but not limited to energy) and the reduction of CO emissions essential.
NOTE Within the EN 50600-4-X series, the term “resource usage effectiveness” is more generally used for KPIs in
preference to “resource usage efficiency”, which is restricted to situations where the input and output parameters used to
define the KPI have the same units.
In order to enable the optimum resource effectiveness of data centres a suite of effective KPIs is needed to
measure and report on resources consumed in order to develop an improvement roadmap.
These standards are intended to accelerate the provision of operational infrastructures with improved
resource usage effectiveness.
This document specifies Cooling Efficiency Ratio to determine the efficient utilization of energy resources to
provide the temperature control required by spaces of the data centre.
Additional standards in the EN 50600-4-X series will be developed, each describing a specific KPI for
resource usage effectiveness or efficiency.
The EN 50600-4-X series does not specify limits or targets for any KPI and does not describe or imply, unless
specifically stated, any form of aggregation of individual KPIs into a combined nor an overall KPI for data
centre resource usage effectiveness or efficiency.
This document is intended for use by and collaboration between data centre managers, facility managers, ICT
managers, and main contractors.
This series of European Standards does not address the selection of information technology and network
telecommunications equipment, software
...