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BSI 23/30467036 DC 2023

BSI 23/30467036 DC 2023

$13.70

BS EN 12693. Refrigerating systems and heat pumps. Safety and environmental requirements. Positive displacement refrigerant compressors

Published By Publication Date Number of Pages
BSI 2023 83
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This European Standard applies to positive displacement refrigerant compressors for stationary and mobile refrigerating systems and heat pumps defined in 3.1, hereafter called compressors. It applies for compressors used in commercial and industrial appliances and with electrical energy supply including integral motors, up to 1 000 VAC and 1 500 VDC. It applies to open drive, semi hermetic and hermetic motor compressors, which contain a positive compression function. This standard is not applicable to: – compressors used in household appliance for which EN 60335 2 34 applies; – compressors using water or air as refrigerant. This European Standard does not deal with requirements for vibration and noise. NOTE 1 Compressors for automotive comfort air conditioning systems can be developed according e.g. SAE J 639. NOTE 2 Noise emission depends on the complete installation of the built-in compressors and the corresponding operating conditions. For semi-hermetic and open drive compressors which include moving parts and for which the external envelope is primarily designed for mechanical loads, thermal loads (to limit the possible deformation due to temperature), stiffness of the structure (external mechanical loads and weight of the equipment), taking into account established safe industrial practice, it is considered that pressure is not a significant design factor. Attached parts covering other functions e.g. oil separators, oil coolers, suction accumulators should comply to EN 14276 1 or EN 13445 6 (cast iron) or EN 13445 8 (aluminium) or showing compliance to the relevant European requirements. This applies also to shells for hermetic compressors either welded or with any kind of permanent joint. Requirements for compressors used in explosive atmospheres are not covered by this standard. NOTE 3 For further guidance see EN 13463-1. This European Standard deals with all significant hazards, hazardous situations and events relevant to compressors, when they are used as intended and under conditions for misuse which are reasonably foreseeable by the manufacturer (see Clause 4). This European Standard specifies safety requirements for the design, construction, manufacture and testing, documentation and marking of compressors, including integral accessories, e.g. shut-off valve, if necessary. The requirements in this standard take account of the intended use, as defined in EN ISO 12100:2010, 3.12. This standard relates to the compressor itself which is to be incorporated in a refrigerating system. This standard is not applicable to compressors as defined in the scope which are manufactured before the date of publication as EN.

PDF Catalog

PDF Pages PDF Title
9 1 Scope
10 2 Normative references
12 3 Terms, definitions and symbols
3.1 Terms and definitions
14 3.2 Symbols
17 4 List of significant hazards
19 5 Safety requirements and/or protective measures
5.1 General
5.2 Protection of moving parts
5.3 Safety to prevent loss of stability
5.4 Safety during handling
5.5 Safety to prevent rupture or bursting
5.5.1 General
20 5.5.2 Pressure requirements
5.5.3 Design and Materials
5.5.3.1 Materials
5.5.3.2 Materials certificates
5.5.3.3 Design
21 5.5.4 Sight glasses
5.5.5 Application of pressure relief devices
5.5.5.1 Protection against discharge shut off valve closed
5.5.5.2 Protection against standstill pressure higher than operating pressure
5.6 Electrical safety
5.6.1 General
5.6.2 Classification
22 5.6.3 Determination of current ratings
5.6.4 Protection against access to live parts
23 5.6.5 Connecting devices
5.6.6 Provisions for earthing
5.6.7 Internal wiring
5.6.8 High potential test
5.6.9 Insulating materials
5.6.10 Motor compressors protection devices
5.7 Measures to reduce emissions of substances
24 6 Verification of safety requirements and/or protective measures
6.1 General
6.2 Type test
6.2.1 General
6.2.2 Strength test
25 6.2.3 Pressure relief device
6.2.4 Verification of electrical safety
6.2.4.1 High potential test
6.2.4.2 Requirements on motor protection
26 6.2.5 Lifting points
6.3 Individual test
6.3.1 General
6.3.2 Strength test
6.3.2.1 General
6.3.2.2 Individual strength test A
27 6.3.2.3 Individual strength test B
6.3.3 Test for tightness
6.3.4 Verification of electrical safety
7 Marking, graphical symbols, written warnings
7.1 General
28 7.2 Marking
29 7.3 Graphical symbols, written warnings and information
7.3.1 Lifting points
7.3.2 Pressurizing the housing
7.3.3 Lubricant charge
8 Appropriate manufacturing procedures
30 9 Documentation and information for the user
9.1 General
9.2 Instruction handbook
31 Annex A (normative)Procedure for the design of a refrigerant compressor by calculation
A.1 Calculation method
A.1.1 General
A.1.2 Strength values for the design calculation
A.1.3 Documentation
A.1.3.1 General
A.1.3.2 Material properties
32 A.2 Design stress to be used for the calculation
A.2.1 Design stress for main pressure bearing parts
34 A.2.2 Design calculation of screws, fasteners, nuts and bolts
35 Annex B (normative)Experimental design method for refrigerant compressors
B.1 Experimental design method
B.1.1 General
B.1.2 Choice and verification of material properties
B.1.3 Procedure for the experimental design method
B.1.4 Testing at maximum allowable design test pressure PF
36 B.1.5 Testing at minimum burst test pressure PTest
B.1.6 Documentation
B.2 Determination of maximum allowable design test pressure PF
37 B.3 Determination of the minimum burst test pressure PTest
B.4 Correction for the actual wall thickness
39 Annex C (normative)Determination of the allowable pressure at the maximum operating temperature
C.1 Relation of the allowable pressure and higher temperatures
C.1.1 General
C.1.2 Documentation
C.2 Determination of the maximum allowable pressure at higher temperatures
40 Annex D (normative)Determination of the allowable pressure at minimum operating temperature — Requirements to avoid brittle fracture
D.1 Relation of the allowable pressure and lower temperatures
D.1.1 General
D.1.2 Requirements of materials and proof of material properties
D.1.3 Documentation
41 D.2 Determination of the maximum allowable pressure at the minimum operating temperature
D.3 Determination of the maximum allowable pressure at the minimum operating temperature on the basis of an empirical method (tmin-Method)
D.3.1 General
D.3.2 Determining tmin 100, tmin 75 and tmin 25
42 D.3.3 Welded constructions
D.3.4 Determination of the safety factor
D.3.5 Material test and documentation
D.4 Determination of the minimum operating temperature TSmin based on reference thickness eB
D.4.1 General
43 D.4.2 Temperature adjustment
D.4.3 Determining design reference temperature TR
50 D.5 Determination of screws, fasteners, nuts and bolts below – 10 °C
51 Annex E (informative)Compilation of material characteristics of often used materials
76 Annex F (informative)Basic design criteria for refrigerant compressors
F.1 General
F.2 Compressor capability against technical performance
F.2.1 Design, dimensioning and manufacturing rules
F.2.2 Choice of material
F.3 Compressor capability against user requirements
F.3.1 Design, dimensioning and manufacturing rules
77 F.3.2 Choice of material
78 Annex ZA (informative)Relationship between this European Standard and the essential requirements of EU-Directive 2006/42/EC aimed to be covered

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BSI 23/30467036 DC 2023
$13.70