BSI PD CLC/TR 50656:2016
$142.49
SPD application in conjunction with Class II equipment
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 24 |
In addition to CLC/TS 61643-12, this Technical Report describes the principle of erecting SPDs to be connected to 50 Hz a.c. power circuits, rated up to 1 000 V r.m.s. in conjunction with Class II equipments.
In addition to EN 61643-11, this Technical Report gives specific guidance for SPDs intended to be installed in class II equipments.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Contents Page |
| 5 | European foreword |
| 6 | Introduction |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 9 | 4 SPDs connected to PE for the protection of Class II equipments 4.1 General |
| 10 | 4.2 TN System Figure 1 — Example of SPDs connected to PE protecting Class II equipments in TN System |
| 11 | 4.3 TT System Figure 2 — Example of SPDs connected to PE protecting Class II equipments in TT System |
| 12 | 4.4 IT System Figure 3 — Example of SPDs connected to PE protecting Class II equipments in IT System |
| 13 | 4.5 Example of lighting pole surge protection connected to PE Figure 4 — Example of SPDs connected to PE protecting Class II head luminary 5 SPDs not connected to PE for the protection of Class II equipments 5.1 General |
| 14 | 5.2 Examples Figure 5 — Example of SPDs to be installed in installation with Class II equipments only (any type of earthing system) |
| 15 | Figure 6 — Example of SPDs to be installed in installation with Class II equipments only (any type of earthing system) |
| 16 | Figure 7 —Example of SPDs with an unacceptable connection to an extraneous conductive part which itself does not have a definite connection to PE (any type of earthing system) 6 Additional requirements for SPDs to comply with equipment class II design rules (Double or reinforced insulation) 6.1 General |
| 17 | 6.2 Requirements for basic protection (protection against direct contact) and fault protection (protection against indirect contact) 6.2.1 Class II SPD 6.2.1.1 General 6.2.1.2 Double and reinforced insulation 6.2.1.2.1 General requirements 6.2.1.2.2 Touchable conductive part of class II SPDs 6.2.1.2.3 Compliance shall be ensured with the degree of protection against electric shock in accordance with IP2XC according to EN 60529 6.2.1.2.4 It should not be possible to remove Parts of class II SPD which serve as supplementary insulation or reinforced insulation without a tool 6.2.1.3 SPDs having basic insulation only should have supplementary insulation applied externally to the SPD and the supplementary insulation should comply with 6.2.2 |
| 18 | 6.2.2 Enclosures |
| 19 | Figure 8 — Class I SPD in Class II enclosure with run-through PE |
| 20 | Annex A (normative) Test to establish whether a conductive part may cause an electric shock |
| 21 | Figure A.1 — Measuring network, touch current weighted for perception or reaction |
