EN IEC 61010-2-011:2021/A11:2021

Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-011: Particular requirements for refrigerating equipment

1 Scope and object This clause of Part 1 is applicable, except as follows: 1.1.1 Equipment included in scope Replacement: Replace the second paragraph by the following: This Part 2 of IEC 61010 specifies particular safety requirements for the following types a) to c) of electrical equipment and their accessories, wherever they are intended to be used, whenever that equipment incorporates REFRIGERATING SYSTEMS as an integral part of, or separate from, the equipment and the equipment is in direct control of the REFRIGERATING SYSTEM. This document details all the requirements when up to 150 g of FLAMMABLE REFRIGERANT are used per stage of a REFRIGERATING SYSTEM. Additional requirements beyond the current scope of this document apply if a REFRIGERANT charge of FLAMMABLE REFRIGERANT exceeds this amount. Addition: Add the following text after the last paragraph: NOTE 101 Examples for REFRIGERATING EQUIPMENT include, but are not limited to, laboratory equipment such as laboratory refrigerators, freezers, refrigerated display cabinets. It is possible that all or part of the equipment falls within the scope of one or more other Part 2 standards of IEC 61010 as well as within the scope of this standard. In that case, the requirements of those other Part 2 standards will also apply. In particular, if equipment is intended to be used as a centrifuge, the requirements of IEC 61010-2-020 apply. However, when the equipment incorporates a refrigerating system and a heating function where the combination of the two introduces additional or more severe HAZARDS than if treated separately, then it is possible that IEC 61010-2-012 is applicable instead of this Part 2-011. See further information in the flow chart (Figure 102) for the selection process and guidance in the Introduction. 1.1.2 Equipment excluded from scope Addition: Add the following new item after item j): or equipment incorporating: aa) a transcritical REFRIGERANT SYSTEM (system that uses CO2) or a system that uses ammonia (NH3) as the REFRIGERANT. 1.2 Object 1.2.1 Aspects included in scope Replacement: Replace the first paragraph by the following: The object of this document is to ensure that the design and methods of construction of REFRIGERATING EQUIPMENT provide adequate protection for OPERATORS, bystanders, trained service personnel, and the surrounding area against the specific HAZARDS that relate to REFRIGERATING SYSTEMS. Addition: Add the following note after the existing note: NOTE 101 A list of HAZARDS typically associated with REFRIGERATING SYSTEMS and REFRIGERANTS is included in Annex BB.

Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2-011: Besondere Anforderungen für Kühlgeräte

Exigences de sécurité pour appareils électriques de mesurage, de régulation et de laboratoire - Partie 2-011: Exigences particulières pour appareils de réfrigération

Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko uporabo - 2-011. del: Posebne zahteve za hladilno opremo - Dopolnilo A11

Ta 2. del standarda IEC 61010 določa posebne varnostne zahteve za naslednje vrste od a) do c) električne opreme in pribora, kadar sta namenjena uporabi, kadar oprema zajema HLADILNE SISTEME kot sestavni del ali ločeno od opreme in kadar oprema neposredno nadzoruje HLADILNI SISTEM.
Ta dokument podrobno opisuje vse zahteve, ko se v eni fazi HLADILNEGA SISTEMA uporablja do 150 g VNETLJIVEGA HLADILNEGA SREDSTVA. Dodatne zahteve, ki so zunaj področja uporabe tega dokumenta, se uporabljajo, če polnjenje VNETLJIVEGA HLADILNEGA SREDSTVA preseže to količino.

General Information

• Status: Published
• Publication Date: 18-Nov-2021
• ICS: 19.080 - Electrical and electronic testing
• Technical Committee: CLC/TC 66X - Safety of measuring, control, and laboratory equipment
• Drafting Committee: CLC/TC 66X - Safety of measuring, control, and laboratory equipment
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 19-Nov-2021
• Due Date: 18-Sep-2022
• Completion Date: 19-Nov-2021
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: SIST EN IEC 61010-2-011:2022/A11:2022 - Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-011: Particular requirements for refrigerating equipment

Relations

• Amends: EN IEC 61010-2-011:2021 - Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-011: Particular requirements for refrigerating equipment
• Effective Date: 03-Mar-2020
• Revised: prEN IEC 61010-2-011:2025 - Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-011: Particular requirements for refrigerating equipment
• Effective Date: 20-Feb-2024

Overview

EN IEC 61010-2-011:2021/A11:2021 (CLC amendment) is the Part 2-011 amendment to the IEC 61010 family: safety requirements for electrical equipment for measurement, control and laboratory use - particular requirements for refrigerating equipment. It applies where electrical laboratory and control equipment incorporate refrigerating systems (integral or separate) and are in direct control of those systems. The amendment clarifies scope, limits and exclusions, and adds normative references and safety requirements specific to refrigerating components, piping and installation.

Key scope points:

• Applies when up to 150 g of flammable refrigerant per stage is used; larger charges trigger additional requirements beyond this document.
• Examples include laboratory refrigerators, freezers and refrigerated display cabinets (see NOTE 101).
• Excludes transcritical CO2 systems and systems using ammonia (R717).

Key Topics and Requirements

• Hazard protection: Ensures design and construction protect operators, bystanders, trained service personnel and surroundings from hazards related to refrigerating systems. (Annex BB lists typical hazards.)
• Flammable refrigerants: Specific provisions for testing, leak-tightness and safe installation when flammable refrigerants are used within the 150 g per-stage limit.
• Components & piping: New normative Annex (replacing Annex CC) defines requirements for heat exchangers, compressors, valves, piping joints, receivers, driers, gauges and pressure-relief devices, including when PED (Pressure Equipment Directive) classification and Notified Body involvement are required.
• Leak testing and production checks: References EN 1779 for production leak-tightness tests and gives guidance on capillary tube handling during leakage tests.
• Pressure equipment interface: Provides guidance on pressure-vessel classification (EN 14276‑1 / EN 14276‑2 tables) and when EN 13445 or PED rules apply.
• Installation & instructions: Adds requirements for installation instructions, including prevention of back-siphonage into potable water systems per EN 61770.

Applications and Who Uses It

This standard is essential for:

• Manufacturers of laboratory refrigerating equipment (refrigerators, freezers, refrigerated cabinets)
• Design engineers and safety specialists developing electrical equipment that integrates refrigerating systems
• Compliance officers preparing technical documentation and conformity assessments
• Test laboratories and notified bodies assessing leak tests, pressure components and PED classification
• Installers and service personnel following installation and safety instructions

Related Standards (selected)

• EN IEC 61010-1 (general requirements)
• EN 14276-1 / EN 14276-2 (refrigerating systems and heat pumps - vessels and piping)
• EN 13445 (unfired pressure vessels)
• EN 1779 (leak testing)
• EN 61770 (back-siphonage prevention)
• IEC 60335-2-34, EN 12284, EN 13136 (components & compressors)

This amendment aligns lab refrigeration safety with pressure-equipment and refrigerant-specific practices and should be used alongside the base IEC 61010 Part 1 and other applicable Part 2 standards (e.g., IEC 61010-2-020, IEC 61010-2-012) where equipment overlaps multiple functions.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2022
Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko
uporabo - 2-011. del: Posebne zahteve za hladilno opremo - Dopolnilo A11
Safety requirements for electrical equipment for measurement, control, and laboratory
use - Part 2-011: Particular requirements for refrigerating equipment
Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2
-011: Besondere Anforderungen für Kühlgeräte
Exigences de sécurité pour appareils électriques de mesurage, de régulation et de
laboratoire - Partie 2-011: Exigences particulières pour appareils de réfrigération
Ta slovenski standard je istoveten z: EN IEC 61010-2-011:2021/A11:2021
ICS:
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
27.200 Hladilna tehnologija Refrigerating technology
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61010-2-011:2021/A11

NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2021
ICS 19.080
English Version
Safety requirements for electrical equipment for measurement,
control, and laboratory use - Part 2-011: Particular requirements
for refrigerating equipment
Exigences de sécurité pour appareils électriques de Sicherheitsbestimmungen für elektrische Mess-, Steuer-,
mesurage, de régulation et de laboratoire - Partie 2-011: Regel- und Laborgeräte - Teil 2-011: Besondere
Exigences particulières pour appareils de réfrigération Anforderungen für Kühlgeräte
This amendment A11 modifies the European Standard EN IEC 61010-2-011:2021; it was approved by CENELEC on 2021-08-02.
CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
amendment 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 amendment 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61010-2-011:2021/A11:2021 E

European foreword
This document (EN IEC 61010-2-011:2021/A11:2021) has been prepared by CLC/TC 66X “Safety of
measuring, control, and laboratory equipment”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2022-05-19
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2024-11-19
conflicting with this document have to be
withdrawn
This document amends EN IEC 61010-2-011:2021.
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 Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association, and supports essential
requirements of EU Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZZ, which is an integral
part of this document.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
1 Modification to Clause 2, “Normative references”
Add the following normative references to Clause 2:
“
EN 809, Pumps and pump units for liquids - Common safety requirements
EN 837-1, Pressure gauges - Part 1: Bourdon tube pressure gauges - Dimensions, metrology,
requirements and testing
EN 837-2, Pressure gauges - Part 2: Selection and installation recommendations for pressure gauges
EN 837-3, Pressure gauges - Part 3: Diaphragm and capsule pressure gauges - Dimensions,
metrology, requirements and testing
EN 1736, Refrigerating systems and heat pumps - Flexible pipe elements, vibration isolators,
expansion joints and non-metallic tubes - Requirements, design and installation
EN 1779:1999, Non-destructive testing - Leak testing - Criteria for method and technique selection
EN 12178, Refrigerating systems and heat pumps - Liquid level indicating devices - Requirements,
testing and marking
EN 12263, Refrigerating systems and heat pumps - Safety switching devices for limiting the pressure -
Requirements and tests
EN 12284, Refrigerating systems and heat pumps - Valves - Requirements, testing and marking
EN 12693, Refrigerating systems and heat pumps - Safety and environmental requirements - Positive
displacement refrigerant compressors
EN 13136, Refrigerating systems and heat pumps - Pressure relief devices and their associated piping
- Methods for calculation
EN 13445-1, Unfired pressure vessels - Part 1: General
EN 13445-2, Unfired pressure vessels - Part 2: Materials
EN 13445-3, Unfired pressure vessels - Part 3: Design
EN 13445-4, Unfired pressure vessels - Part 4: Fabrication
EN 13445-5, Unfired pressure vessels - Part 5: Inspection and testing
EN 13445-6, Unfired pressure vessels - Part 6: Requirements for the design and fabrication of
pressure vessels and pressure parts constructed from spheroidal graphite cast iron
EN 13445-8, Unfired pressure vessels - Part 8: Additional requirements for pressure vessels of
aluminium and aluminium alloys
EN 13445-10, Unfired pressure vessels - Part 10: Additional requirements for pressure vessels of
nickel and nickel alloys
EN 13480-1, Metallic industrial piping - Part 1: General
EN 13480-2, Metallic industrial piping - Part 2: Materials
EN 13480-3, Metallic industrial piping - Part 3: Design and calculation
EN 13480-4, Metallic industrial piping - Part 4: Fabrication and installation
EN 13480-5, Metallic industrial piping - Part 5: Inspection and testing
EN 13480-6, Metallic industrial piping - Part 6: Additional requirements for buried piping
EN 13480-8, Metallic industrial piping - Part 8: Additional requirements for aluminium and aluminium
alloy piping
EN 14276-1, Pressure equipment for refrigerating systems and heat pumps - Part 1: Vessels -
General requirements
EN 14276-2, Pressure equipment for refrigerating systems and heat pumps - Part 2: Piping - General
requirements
EN 61770, Electric appliances connected to the water mains - Avoidance of backsiphonage and failure
of hose-sets
IEC 60335-2-34, Household and similar electrical appliances - Safety - Part 2-34: Particular
requirements for motor-compressors
IEC 60204-1, Safety of machinery - Electrical equipment of machines - Part 1: General requirements
ISO 4126-1, Safety devices for protection against excessive pressure — Part 1: Safety valves
ISO 4126-2, Safety devices for protection against excessive pressure — Part 2: Bursting disc safety
devices
2 Modification to 5.4.3, “Equipment installation”
Add the following item after f):
“aa)  instructions on the prevention of back-siphonage into potable water systems (see 11.101);”
3 Modification to 11, “Protection against HAZARDS from fluids and solid
foreign objects”
In 11.7.104.3, "Leakage test for FLAMMABLE REFRIGERANT", replace the 4th paragraph by the following
(make it a note):
“
NOTE Care is expected to be taken that the installation of the capillary tube does not unduly influence the
results of the test and that foreign material does not enter the capillary tube during insulation or assembly for test.
It can be necessary to position the capillary tube before the equipment is insulated.”
Add the following subclause:
“11.101 Protection of hot and cold water services
Back-siphonage from the equipment to the potable water services shall be prevented by means
meeting the relevant requirements of EN 61770.
NOTE Attention is drawn to the existence of national and local regulations.
If the means are to be provided by the RESPONSIBLE BODY, this shall be stated in the manufacturer’s
installation instructions.
Conformity is checked by inspection and by examination of the manufacturer’s instructions.”
4 Modification to Annex CC, “Safety requirements for components and
piping”
Replace Annex CC by the following text:
"
Annex A
(normative)
Safety requirements for components and piping
A.1 Overview
The sealed system components can be considered pressure vessels in accordance with the Pressure
Equipment Directive (PED) 2014/68/EU according to the classification in Table CC.1 and Table CC.2.
If the components or piping are classified as a Category II or higher pressure vessel according to the
PED, then the requirements of Table CC.3 shall apply including the use of a Notified Body to the PED.
Table CC.1 — Parameters of pressure vessels according to EN 14276-1
PS × V
a
Fluid Nature V (L) Category/Article
PS (bar)
(bar × L)
if and and and and then
Not subjected to
≤ 0,5 - -
b
PED
c
≤ 1 -
Art. 4.3
c
≤ 25
Art. 4.3
> 0,5 and ≤ 200
> 25 and ≤ 50 I
> 1
> 50 and ≤ 200 II
Gas
> 200 and
≤ 1 - III
≤ 1 000
> 200 and
III
≤ 1 000
≤ 1 000 > 1
Group 1
> 1 000 IV
> 1 000 - - IV
Not subjected to
≤ 0,5 - -
b
PED
c
≤ 1 -
Art. 4.3
> 0,5 and ≤ 500
c
≤ 200
Art. 4.3
d
Liquid
> 0,5 and ≤ 10 I
> 1 > 200
> 10 and ≤ 500 II
> 500 < 1 - II
> 500 > 1 - III
PS × V
a
Fluid Nature V (L) Category/Article
PS (bar)
(bar × L)
if and and and and then
Not subjected to
≤ 0,5 - -
b
PED
c
≤ 1 -
Art. 4.3
c
≤ 50 Art. 4.3
> 0,5 and ≤ 1 000
> 50 and ≤ 200 I
> 1
> 200 and
II
≤ 1 000
Gas
≤ 1 - III
> 1 000 and
> 1 000 and
≤ 3 000
III
≤ 3 000
> 0,5 and ≤ 4 > 1 000 III
Group 2
> 1
> 4 > 3 000 IV
> 3 000 - - IV
Not subjected to
≤ 0,5 - -
PED b
c
> 0,5 and ≤ 10 - - Art. 4.3
c
> 10 and ≤ 1 000 ≤ 10 -
Art. 4.3
d
Liquid
c
> 10 and ≤ 1 000 > 10 ≤ 10 000
Art. 4.3
> 10 and ≤ 500 - > 10 000 I
> 1 000 < 10 - I
> 500 > 10 > 10 000 II
a
1 bar = 0,1 Mpa.
b
PED = Pressure Equipment Directive
c
Art. 4.3 = reference to Article 4.3 of the Pressure Equipment Directive
d
Liquids are considered to be fluids having a vapour pressure of not more than 0,5 bar above the normal
atmospheric pressure (1 013 mbar)
Table CC.2 — Parameters of piping according to EN 14276-2
PS × DN (bar)
a
Fluid Nature DN Category/Article
PS (bar)
a
if and and And and then
Not subjected to
≤ 0,5 - -
b
PED
c
≤ 25 -
Art. 4.3
> 25 and ≤ 100 ≤ 1 000 I
Gas
> 0,5
> 1 000 and
> 100 and ≤ 350 II
≤ 3 500
> 350 > 3 500 III
Group 1
Not subjected to
≤ 0,5 - -
PED b
c
≤ 25 - Art. 4.3
> 0,5
c
- ≤ 2 000
d Art. 4.3
Liquid
> 0,5 and ≤ 10 - I
> 2 000
> 10 and ≤ 500 II
> 25
> 500 - III
Not subjected to
≤ 0,5 - -
b
PED
c
≤ 32 -
Art. 4.3
c
- ≤ 1 000 Art. 4.3
Gas
> 1 000 and
> 32 and ≤ 100 I
> 0,5
≤ 3 500
> 3 500 and
> 100 and ≤ 250 II
≤ 5 000
Group 2
> 250 > 5 000 III
Not subjected to
≤ 0,5 - -
b
PED
c
> 0,5 and ≤ 10 - -
Art. 4.3
c
d - - ≤ 5 000 Art. 4.3
Liquid
c
- ≤ 200 -
Art. 4.3
> 10 and ≤ 500 > 5 000 I
> 200
> 500 - II
a
1 bar = 0,1 Mpa.
b
PED = Pressure Equipment Directive.
c
Art. 4.3 = reference to Article 4.3 of the Pressure Equipment Directive.
d
Liquids are considered to be fluids having a vapour pressure of not more than 0,5 bar above the normal
atmospheric pressure (1 013 mbar).
Table CC.3 — Components and piping requirements
Components Related standards and requirements
Heat exchangers: EN 14276-1 or EN 13445 series if applicable
combined with 11.7.2 of this document
–  pipe coil without air (tube in tube)
–  multi-tubular (shell and tubes)
Plate heat exchangers EN 14276-1 or EN 13445 series if applicable
combined with 11.7.2 of this document
Headers and coils with air as secondary fluid EN 14276-2 combined with a production leak
tightness test based on guidance from EN 1779
Receiver/accumulator/economizer EN 14276-1 or EN 13445 series if applicable
combined with 11.7.2 of this document
Oil separ
...