PRF1, PRD, PF surge arresters Protection against overvoltages caused by lightning strikesThe electrician friendly lightning protection

A guide to help you choose the right surge arrester

Building a New Electric World

With Schneider Electric, lightning protection can easily

Schneider Electric is today one of the leading global brands of power distribution equipment.In the quest for ever greater safety and continuity of service, the ranges are changing to meet all residential, tertiary and industrial protection requirements.

«90% of power outlets supply equipment incorporating electronic devices.»

More and more electrical equipment is today sensitive to overvoltages caused by lightning strikes.

In response to these new requirements, Schneider Electric, the leading power distribution manufacturer, is devoting its efforts to lightning protection.

To make it easier to select surge arresters for electrical installations and to implement and maintain them, 550 specialists design and produce surge arresters in compliance with international standards. Schneider Electric’s surge arresters are highly suitable for electrical contractors and meet their users’ most stringent requirements.

From Grenoble to Salt Lake City, from Brussels to Shanghai, quality requirements are being pushed to the limit. Each site has obtained ISO 9001 and/or ISO 14001 certification.

be integrated into the power distribution system

For all low voltage switchboards and electrical enclosures, a range of surge arresters that is simple to install.

The effectiveness of lightning protection is closely related to the implementation of its surge arresters.

To ensure the protection of equipment connected to • low voltage networks,• telecommunications networks,• computer networks,

Schneider Electric has designed a complete range of surge arresters that can be perfectly integrated into the enclosures and electrical switchboards of its switchgear assembly and installation systems.

• Certified coordination between the surge arrester and its disconnection circuit breaker,

• Protection against the nuisance tripping of “si” and “SiE” earth leakage protection devices during a lightning strike,

• Easy to implement and use,

• Compatibility with all earthing systems (TT, TNS, TNC, IT),

• Technical and aesthetic consistency,

• Compliance with standards,

• Availability of products and services.

A Schneider Electric innovation, Quick PRD, Quick PF and Combi PRF1«built-in» technology surge arresters incorporate their own disconnection circuit breaker: easy to choose and simple to install for greater effectiveness.

Schneider Electric, helping professionals to choose the best lightning protection

1 Estimate the value of the equipment to be protected

The value is estimated by considering:n the financial cost

of the equipment

n the economic impact of equipment downtime

n domestic equipment:n audio-video equipment,

computers,n electrical appliances, n burglar alarm.

n building equipment: n fire alarm, access control, n automated heating or

air-conditioning, n lift.

n business equipment:n programmable machine, n server, n sound or light control system.

n heavy equipment:n medical infrastructure, n production infrastructure, n heavy computer processing.

2 Determine the type of building

Lightning protection can be calculated for an entire building or for part of a building that is electrically independent.

n detached house,

n flat, small semi-detached house,

n common areas of a building,

n professional premises.

To meet all protection requirements more effectively:

n residential buildings

n tertiary buildings

n industrial buildings

Schneider Electric, helping professionals to choose the best lightning protection

As proof of the complete effectiveness of lightning protection in meeting each need, Schneider Electric offers a simple and effective selection method.

3 Identify the type of power distribution

Depending on the size of the building and the extent of its electrical system, one or more surge arresters must be used in the various switchboards in the installation.

Integration into the electrical power

distribution:

n single switchboard or main switchboard,

n subdistribution board,

n sensitive equipment more than 30 m from the switchboard.

4 Understand the risk of the impact of lightning on the site

Lightning is attracted by high points that conduct electricity. They can be:n natural: tall trees, mountain

peaks, damp areas, ferrous soils.

n artificial: chimney stacks, aerials, pylons, lightning rods.

Indirect effects can be incurred within a fifty metre radius around the point of impact.

Location of the building:

n in an urban, suburban, grouped housing area.

n in plain area.

n in an area where there is a special risk (pylon, tree, mountainous region, mountain peak, damp area or pond).

n in an exceptionally exposed area (lightning rod within 50 metres of a building).

PRF1, PRD, PF surge arrester selection guide

common equipment

Computers,electrical appliances,

audio-video equipment,burglar alarm,

etc.

Detachedhouse

Flat, smalsemi-detached

house

Common areasof a building

Professional premises

building equipment

Fire alarm, automated heating

orair-conditioning,

lift,access control, etc.

Single switchboard

ormain

switchboard

Subdistributionboard

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PE O

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CHOICE

PRF1Master

NS 160N 160A

1

Surge arresterswith integrated disconnector

2

3

4

Choice of disconnectors to be associated with the surge arrestersThe choice of a disconnector that is 100% coordinated with the surge arrester ensures complete safety at the end of life phase of the surge arrester.

PRD8PF8

C60H 20ACurve C

C60N 20ACurve C

PRD20PF20

PRD40PF40

PRD65PF65

C60H 25ACurve C

C60N 25ACurve C

C60H 40ACurve C

C60N 40ACurve C

C60H 50ACurve C

C60N 50ACurve C

Other surge arresters: choice of associated disconnector

6kA 10kA 15kA

QUICKPF PF40

CombiPRF1

+ PF40

CombiPRF1

+ PF40

QUICKPF

QUICKPF PF40

CombiPRF1

+ PF40

CombiPRF1

+ PF40

ALTERNATIVE

+ +

Quick PF 1P+NIcc = 6 kA

Quick PF 3P+NIcc = 6 kA

Combi PRF1 1P+NIcc = 6 kA

Combi PRF1 3P+NIcc = 6 kA

Quick PRD 1P+NIcc = 25 kA

Quick PRD 3P+NIcc = 25 kA

PF40 PF65PRF1

Master+ PF40

PRF1Master+ PF40

QUICKPRD20r

QUICK PRD40r

QUICK PRD40r

Combi PRF1or

PRF1 Master +Quick PRD40r

PRD20 or PF20

PRD40 or PF40

PRD40 or PF40

Combi PRF1 or PRF1 Master

+PRD40 or PF40

PRF1, PRD, PF surge arrester selection guide

building equipment

Fire alarm, automated heating

orair-conditioning,

lift,access control, etc.

Subdistributionboard

Dedicated protection, more than

30 m from a switchboard

business equipment

Programmable machine,

server,sound or

light control system, etc.

Single switchboard

or main switchboard

Subdistributionboard

Dedicated protection, more than

30 m from a switchboard

heavy equipment

Medical, production,

or heavy computer processing

infrastructure,etc.

Single switchboard

or main switchboard

Subdistributionboard

Dedicated protection, more than

30 m from a switchboard

NS 160N 160A NS 160H160A

50kA

Choice of disconnectors to be associated with the surge arrestersThe choice of a disconnector that is 100% coordinated with the surge arrester ensures complete safety at the end of life phase of the surge arrester.

Protection of telecommunications and computer equipment

Lightning can also propagate through telecommunications and computer networks.It can damage all the equipment connected to these networks: telephones, modems, computers, servers, etc.

C60H 20ACurve C

Contact usC60H 25ACurve C

C60H 40ACurve C Contact us

Contact usC60H 50ACurve C

Other surge arresters: choice of associated disconnector

15kA 25kA 36kA 70kA

Choice of PRC and PRI surge arresters PRC PRI

Analogue telephone networks <200V n

Digital networks, analogue lines <48V n

Digital networks, analogue lines <6VELV load supply <48V n

+ + + + + +

Icc

QUICKPRD20r

QUICK PRD40r

QUICK PRD40r

Combi PRF1or

PRF1 Master +Quick PRD40r

PRD20 or PF20

PRD40 or PF40

PRD40 or PF40

Combi PRF1 or PRF1 Master

+PRD40 or PF40

QUICK PRD20r

PRD20 or PF20

QUICK PRD8r

PRD8 or PF8

QUICK PRD40r PRD65 PRD65

Combi PRF1or

PRF1 Master +Quick PRD40r

PRD40 or PF40 PF65 PF65

Combi PRF1 or PRF1 Master

+PRD40 or PF40

QUICK PRD20r

PRD20 or PF20

QUICK PRD8r

PRD8 or PF8

PRD65Combi PRF1

+ Quick PRD40r

Combi PRF1or

PRF1 Master +Quick PRD40r

Combi PRF1or

PRF1 Master +Quick PRD40r

PF65Combi PRF1

+PRD40 or PF40

Combi PRF1 or PRF1 Master

+PRD 40 or PF40

Combi PRF1 or PRF1 Master

+ PRD 40 or PF40

QUICKPRD20r

PRD20 or PF20

QUICKPRD8r

PRD8 or PF8

Schneider Electric, a range for all your applications

Schneider Electric is at your side day by day and has designed simple, practical tools to help you quickly select and implement the right lightning protection:

• product catalogue

• selection assistance software

As standard specifications and designs change from time to time, please ask for confirmation of the information given in this publication.

Realization: Schneider ElectricDesign: Félix CréationPhotos: Schneider Electric

Schneider Electric Industries SAS

Electrical Distribution Communication38050 Grenoble Cedex 9 - FranceTel.: +33 (0)4 76 57 60 60www.schneider-electric.com

08.2007M9DP80CEn

Lightning protection 3P + NSurge arrester Reference Disconnector

Quick PF 16618 integrated

Combi PRF1 16629 integrated

PRF1 Master 16630 (x4) NS 160 N TM160D

PRD65r 16559 C60N or H C50PRD40r 16564 C60N or H C40PRD40 16569 C60N or H C40PRD20r 16674 C60N or H C25PRD20 16574 C60N or H C25PRD8r 16679 C60N or H C20PRD8 16579 C60N or H C20

PF65r 15685 C60N or H C50PF65 15586 C60N or H C50PF40r 15690 C60N or H C40PF40 15688 C60N or H C40PF20 15693 C60N or H C25PF8 15696 C60N or H C20

Lightning protection 1P + NSurge arrester Reference Disconnector

Quick PF 16617 integrated

Combi PRF1 16626 integrated

PRF1 Master 16630 (x2) NS 160 N TM160D

PRD65r 16557 C60N or H C50PRD40r 16562 C60N or H C40PRD40 16567 C60N or H C40PRD20r 16672 C60N or H C25PRD20 16572 C60N or H C25PRD8r 16677 C60N or H C20PRD8 16577 C60N or H C20

PF65 15684 C60N or H C50PF40 15687 C60N or H C40PF20 15692 C60N or H C25PF8 15695 C60N or H C20

Telecommunications and computer equipment protection Surge arrester Reference

Quick PRD 40r 16294 integratedQuick PRD 20r 16297 integratedQuick PRD 8r 16300 integrated

PRC 200V 16593PRI <6V 16594PRI <48V 16595

Quick PRD 40r 16292 integratedQuick PRD 20r 16295 integratedQuick PRD 8r 16298 integrated