BS EN 50539-11:2013+A1:2014
$198.66
Low-voltage surge protective devices. Surge protective devices for specific application including d.c. – Requirements and tests for SPDs in photovoltaic applications
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 58 |
This European Standard defines the requirements and tests for SPDs intended to be installed on the d.c. side of photovoltaic installations to protect against induced and direct lightning effects. These devices are connected to d.c. power circuits of photovoltaic generators, rated up to 1 500 V.
It takes into account that photovoltaic generators:
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behave like current generators,
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that their nominal current depends on the light intensity,
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that their short-circuit current is almost equal to the nominal current,
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are connected in series and/or parallel combinations leading to a great variety of voltages, currents and powers from a few hundreds of W (in residential installations) to several MW (photovoltaic fields).
The very specific electrical parameters of PV installations on the d.c. side require specific test requirements for SPDs.
SPDs with separate input and output terminal(s) that contain a specific series impedance between these terminal(s) (so called two port SPDs according to EN 61643‑11 ) are currently not sufficiently covered by the requirements of this standard and require additional consideration.
In general SPDs for PV applications do not contain a specific series impedance between the input/output terminals due to power efficiency considerations.
SPDs complying with this standard are exclusively dedicated to be installed on the d.c. side of photovoltaic generators. PV installation including batteries and other d.c. applications are not taken into account and additional requirements and tests may be necessary for such applications.
SPDs for which the manufacturers declares short circuit mode overload behaviour, shall require specific measures to ensure that such devices will not endanger the operator during maintenance and replacement due to possible d.c. arcing.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Terms, definitions and abbreviations 3.1 Terms and definitions 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.1.6 |
| 10 | 3.1.7 3.1.8 3.1.9 3.1.10 3.1.11 3.1.12 3.1.13 |
| 11 | 3.1.14 3.1.15 3.1.16 3.1.17 3.1.18 3.1.19 3.1.20 3.1.21 |
| 12 | 3.1.22 3.1.23 3.1.24 3.1.25 3.1.26 3.1.27 3.1.28 3.1.29 |
| 13 | 3.1.30 3.1.31 3.1.32 3.1.33 3.1.34 3.1.35 3.1.36 3.1.37 |
| 14 | 3.1.38 3.1.39 3.2 Abbreviations |
| 15 | 4 Service conditions 4.1 Voltage 4.2 Air pressure and altitude 4.3 Temperatures 4.4 Humidity 5 Classification |
| 19 | 6 Requirements 6.1 General requirements 6.1.1 General 6.1.2 Identification |
| 20 | 6.1.3 Marking 6.2 Electrical requirements 6.2.1 Protection against direct contact 6.2.2 Residual current IPE |
| 21 | 6.2.3 Voltage protection level Up 6.2.4 Operating duty 6.2.5 Disconnectors and status indicators 6.2.5.1 Disconnectors 6.2.5.2 SPD overload behaviour |
| 22 | 6.2.5.3 Status indicators 6.2.6 Insulation resistance 6.2.7 Dielectric withstand 6.2.8 Continuous operating current (ICPV) 6.2.9 Total discharge Current ITotal (for multipole SPDs) 6.3 Mechanical requirements 6.3.1 Mounting 6.3.2 Screws, current carrying parts and connections 6.3.3 External connections |
| 23 | 6.3.4 Air clearances and creepage distances 6.3.5 Mechanical strength 6.4 Environmental and material requirements 6.4.1 General 6.4.2 Life test under damp heat 6.4.3 Electromagnetic compatibility 6.4.3.1 Electromagnetic immunity |
| 24 | 6.4.3.2 Electromagnetic emission 6.5 Additional requirements for specific SPD designs 6.5.1 One port SPDs with separate input/output terminals 6.5.2 Environmental tests for outdoor SPDs 6.5.3 SPDs with separate isolated circuits 6.6 Additional parameter if declared by the manufacturer 7 Type tests 7.1 General |
| 25 | 7.2 General testing procedures 7.2.1 General |
| 30 | 7.2.2 Impulse discharge current used for class I additional duty test 7.2.3 Current impulse used for class I and class II residual voltage and operating duty tests |
| 31 | 7.2.4 Voltage impulse used for class I and II sparkover tests 7.2.5 Characteristics of power sources for testing 7.2.5.1 General source characteristics |
| 32 | 7.2.5.2 Specific source characteristics for operating duty tests 7.2.5.3 Specific source characteristics for overload behaviour tests 7.3 Indelibility of markings |
| 33 | 7.4 Electrical tests 7.4.1 Protection against direct contact 7.4.1.1 Insulated parts 7.4.1.2 Metal parts 7.4.2 Residual current IPE 7.4.3 Pass criteria 7.4.4 Measured limiting voltage 7.4.4.1 General |
| 35 | 7.4.4.2 Residual voltage with 8/20 current impulses 7.4.4.3 Front-of-wave sparkover voltage 7.4.4.4 Pass criteria for all measured limiting voltage tests 7.4.5 Operating duty test 7.4.5.1 Flow chart |
| 36 | 7.4.5.2 General |
| 37 | 7.4.5.3 Class I and II operating duty tests |
| 38 | 7.4.5.4 Additional duty test for test class I 7.4.5.5 Pass criteria for all operating duty tests and for the additional duty test for test class I 7.4.6 Disconnectors and safety performance of overstressed SPDs 7.4.7 SPD overload behaviour test 7.4.7.1 Test set up |
| 39 | 7.4.7.2 Sample preparation 7.4.7.2.1 General 7.4.7.2.2 SPD according to 5.9.2, 5.9.5 and 5.9.6 7.4.7.2.3 SPDs according to 5.9.1, 5.9.3 and 5.9.4 |
| 40 | 7.4.7.3 Test procedure |
| 41 | 7.4.7.4 Pass criteria 7.4.7.4.1 Open circuit mode 7.4.7.4.2 Short-circuit mode 7.4.8 Insulation resistance 7.4.8.1 General 7.4.8.2 Sample preparation 7.4.8.3 Test procedure |
| 42 | b) between the live parts of the SPD main circuit and live parts of separate isolated circuits, if there are any. 7.4.8.4 Pass criteria 7.4.9 Dielectric withstand 7.4.9.1 General |
| 43 | 7.4.9.2 Pass criteria 7.5 Mechanical tests 7.5.1 Verification of air clearances and creepage distances 7.5.2 Pass criteria |
| 46 | 7.6 Environmental and material tests 7.6.1 Life test under damp heat 7.6.2 Pass criteria |
| 47 | 7.7 Additional tests for specific SPD designs 7.7.1 Test for one-port SPDs with separate input/output terminals 7.7.1.1 Rated load current (IL) 7.7.1.2 Pass criteria 7.7.2 Environmental tests for outdoor SPDs 7.7.3 SPDs with separate isolated circuits 7.8 Additional tests for specific performance 7.8.1 Total discharge current test for multipole SPDs 7.8.1.1 Test settings |
| 48 | 7.8.1.2 Test procedure 7.8.1.3 Pass criteria 8 Routine and acceptance tests 8.1 Routine tests 8.2 Acceptance tests |
| 49 | Annex A (normative) Tests to determine the presence of a switching component and the magnitude of the follow current A.1 General A.2 Test to determine the presence of a switching (crowbar) component A.3 Test to determine the magnitude of the follow current |
| 50 | Annex B (informative) Environmental tests for outdoor SPDs B.1 Accelerated aging test with UV radiation B.1.1 General B.1.2 Pass criteria B.2 Water immersion test B.3 Dielectric test B.3.1 General B.3.2 SPD with metallic housing with or without mounting bracket B.3.3 SPD with non-conductive housing with non-conductive or without mounting bracket |
| 51 | B.3.4 SPD with non-conductive housing with metallic mounting bracket B.3.5 Pass criteria B.4 Temperature cycle test B.4.1 General B.4.2 Pass criteria B.5 Verification of resistance to corrosion B.5.1 General B.5.2 Pass criteria |
| 52 | Annex C (normative) Temperature rise limits |
| 53 | Annex D (informative) Transient behaviour of the PV Test source in 7.2.5.1 a) D.1 Transient behaviour of the PV test source acc. to class 7.2.5.1 D.2 Test setup using a semiconductor switch to determine the transient behaviour of a PV test source Driver circuit with adjustable switching time Fast Switch e.g. IGBT PV source |
| 54 | D.3 Alternative test setup using a fuse |
