PD CLC/TS 51643-32:2020

What is PD CLC/TS 51643‑32 about?  

PD CLC/TS 51643‑32 describes the principles for selection, installation and coordination of SPDs intended for use in Photovoltaic (PV) systems up to 1500 V DC and for the AC side of the PV system rated up to 1000 V RMS 50/60 Hz. 

The photovoltaic installation extends from a PV array or a set of interconnected PV-modules to include the associated cabling and protective devices and the converter up to the connection point in the distribution board or the utility supply point. 

For PV installations including batteries additional requirements could be necessary. 

Note 1 The HD 60364 series, EN 62305 series and CLC/TS 61643-12 also apply. 

Note 2 This document deals only with SPDs and not with surge protective components integrated inside equipment (e.g. inverters, (PCE) power conversion equipment). 

Who is PD CLC/TS 51643‑32 for? 

PD CLC/TS 51643‑32 on low-voltage surge protective devices is relevant to: 

• Electrical engineers 
• Manufacturers of low voltage surge electric devices  
• Automobile industry 
• Researchers and scientists 
• Quality and safety department  

Why should you use PD CLC/TS 51643‑32?  

A low-voltage surge protective device (SPD) limits transient voltages by diverting or limiting surge current. 

PD CLC/TS 51643‑32 provides selection principles and applications for DC side of photovoltaic installations. 

PD CLC/TS 5164332 benefits users with different PV installations. PD CLC/TS 5164332 contains useful information for the selection of SPDs connected to photovoltaic installations. 

Overall, PD CLC/TS 5164332 provides you with complete information from choosing to installing surge protective devices on photovoltaic installations, which will greatly assist you in getting a better understanding and making your products easier to understand with improved quality. 

What’s changed since the last update? 

PD CLC/TS 51643‑32:2020 supersedes PD CLC/TS 51643‑32:2017. PD CLC/TS 51643‑32:2020 includes some technical changes concerning PD CLC/TS 51643‑32:2017. These include: 

• Slight restructuring without impact on the content (such as changing the title of a clause by changing the text of one clause to another 
• Deletion of the current branch concept of an SPD 
• Referring to EN 61634-11:2019 instead of EN 50539-11:2013 
• Referring to OCFM, SCFM instead of acronyms and concepts SCM and OCM 
• Deletion of Annex C relating to the simplified risk assessment A 
• Addition of a new annex dealing with telecommunication circuits