PRF1, PRD, PF surge arresters
Protection against overvoltages
caused by lightning strikes
The 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
«90% of power outlets supply equipment
incorporating electronic devices.»
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.
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
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.
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.
Schneider Electric,
helping professionals to choo
To meet all
protection
requirements
more
effectively:
1
Estimate the value of the
equipment to be protected
n domestic equipment:
n audio-video equipment,
n
n
n residential buildings
The value is estimated
by considering:
n tertiary buildings
n industrial buildings
n t
he financial cost
of the equipment
n t
he economic impact
of equipment downtime
2
computers,
electrical appliances,
burglar alarm.
nb
uilding equipment:
n fire alarm, access control,
n automated heating or
air-conditioning,
n lift.
nb
usiness equipment:
n programmable machine,
n server,
n sound or light control system.
nh
eavy equipment:
n medical infrastructure,
n production infrastructure,
n heavy computer processing.
Determine the type of building
nd
etached house,
n fl
at, small semi-detached house,
nc
ommon areas of a building,
np
rofessional premises.
Lightning protection can
be calculated for an entire
building or for part of a
building that is electrically
independent.
ose 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
Integration into the electrical power
distribution:
n s ingle switchboard or main switchboard,
n s ubdistribution board,
n s ensitive equipment more than 30 m
from the switchboard.
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.
4
Understand the risk of the impact
of lightning on the site
Location of the building:
n in an urban, suburban, grouped
housing area.
n in plain area.
Lightning is attracted by
high points that conduct
electricity. They can be:
n n
atural: tall trees, mountain
peaks, damp areas, ferrous
soils.
n a
rtificial: chimney stacks,
aerials, pylons, lightning
rods.
Indirect effects can be incurred
within a fifty metre radius around
the point of impact.
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
EQUIPMENT TO BE PROTECTED
1
common equipment
building equip
Computers,
electrical appliances,
audio-video equipment,
burglar alarm,
etc.
2
Flat, smal
semi-detached
house
TYPE OF
BUILDING
Detached
house
Common areas
of a building
auto
air
acce
Professional
premises
+
3
TYPE OF
POWER
DISTRIBUTION
Single
switchboard
or
main
switchboard
Subdistribution
board
RISK OF THE IMPACT
OF LIGHTNING
4
CHOICE
QUICK
PF
PF40
Combi
PRF1
+ PF40
Combi
PRF1
+ PF40
QUICK
PF
PF40
PF65
PRF1
Master
+ PF40
PRF1
Master
+ PF40
QUICK
PF
PF40
Combi
PRF1
+ PF40
Combi
PRF1
+ PF40
ALTERNATIVE
QUICK
PRD20r
QUICK
PRD40r
QUICK
PRD40r
Combi PRF1
or
PRF1 Master
+Quick PRD4
PRD20
or PF20
PRD40
or PF40
PRD40
or PF40
Combi PRF1 o
PRF1 Master
+PRD40 or PF4
Choice of disconnectors to be associated with the surge arresters
The choice of a disconnector that is 100% coordinated with the surge arrester ensures complete safety at the e
Surge arresters
with integrated disconnector
Other surge arresters: choice of associate
6kA
Quick PRD 1P+N
Icc = 25 kA
Quick PF 1P+N
Icc = 6 kA
Combi PRF1 1P+N
Icc = 6 kA
Quick PRD 3P+N
Icc = 25 kA
Quick PF 3P+N
Icc = 6 kA
Combi PRF1 3P+N
Icc = 6 kA
10kA
PRD8
PF8
C60N 20A
Curve C
C60H 20A
Curve C
PRD20
PF20
C60N 25A
Curve C
C60H 25A
Curve C
PRD40
PF40
C60N 40A
Curve C
C60H 40A
Curve C
PRD65
PF65
C60N 50A
Curve C
C60H 50A
Curve C
PRF1
Master
NS 160N 160A
pment
business equipment
Fire alarm,
omated heating
or
r-conditioning,
lift,
ess control, etc.
1
er
40r
or
r
40
Programmable
machine,
server,
sound or
light control
system, etc.
+
+
Medical,
production,
or heavy computer
processing
infrastructure,
etc.
+
Single
switchboard
or main
switchboard
Dedicated
protection,
more than
30 m from a
switchboard
n
heavy equipment
Subdistribution
board
+
Dedicated
protection,
more than
30 m from a
switchboard
Single
switchboard
or main
switchboard
QUICK
PRD20r
QUICK
PRD8r
QUICK
PRD40r
PRD65
PRD65
Combi PRF1
or
PRF1 Master
+Quick PRD40r
QUICK
PRD20r
QUICK
PRD8r
PRD65
Combi PRF1
+ Quick
PRD40r
PRD20
or PF20
PRD8
or PF8
PRD40
or PF40
PF65
PF65
Combi PRF1 or
PRF1 Master
+PRD40 or PF40
PRD20
or PF20
PRD8
or PF8
PF65
Combi PRF1
+PRD40
or PF40
ed disconnector
Icc
25kA
Subdistribution
board
Combi PRF1
Combi PRF1
or
or
PRF1 Master
PRF1 Master
+Quick PRD40r +Quick PRD40r
Combi PRF1 or
PRF1 Master
+PRD 40
or PF40
Combi PRF1 or
PRF1 Master
+ PRD 40
or PF40
Dedicated
protection,
more than
30 m from a
switchboard
QUICK
PRD20r
QUICK
PRD8r
PRD20
or PF20
PRD8
or PF8
Protection of telecommunications and
computer equipment
end of life phase of the surge arrester.
15kA
+
36kA
70kA
Lightning can also propagate through
telecommunications and computer networks.
It can damage all the equipment connected to these
networks: telephones, modems, computers, servers,
etc.
Choice of PRC and PRI surge arresters
Contact us
PRC
PRI
Contact us
Analogue telephone networks <200V
Contact us
Digital networks, analogue lines <48V
n
Digital networks, analogue lines <6V
ELV load supply <48V
n
n
50kA
NS 160H
160A
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:
•p
roduct catalogue
• s election
assistance
software
Surge arrester
Lightning protection 3P + N
Reference
Disconnector
Quick PRD 40r
Quick PRD 20r
Quick PRD 8r
16294
16297
16300
integrated
integrated
integrated
Quick PF
16618
integrated
Combi PRF1
16629
integrated
PRF1 Master
16630 (x4)
NS 160 N TM160D
PRD65r
PRD40r
PRD40
PRD20r
PRD20
PRD8r
PRD8
16559
16564
16569
16674
16574
16679
16579
C60N or H C50
C60N or H C40
C60N or H C40
C60N or H C25
C60N or H C25
C60N or H C20
C60N or H C20
PF65r
PF65
PF40r
PF40
PF20
PF8
15685
15586
15690
15688
15693
15696
C60N or H C50
C60N or H C50
C60N or H C40
C60N or H C40
C60N or H C25
C60N or H C20
Surge arrester
Lightning protection 1P + N
Reference
Disconnector
Quick PRD 40r
Quick PRD 20r
Quick PRD 8r
16292
16295
16298
integrated
integrated
integrated
Quick PF
16617
integrated
Combi PRF1
16626
integrated
PRF1 Master
16630 (x2)
NS 160 N TM160D
PRD65r
PRD40r
PRD40
PRD20r
PRD20
PRD8r
PRD8
16557
16562
16567
16672
16572
16677
16577
C60N or H C50
C60N or H C40
C60N or H C40
C60N or H C25
C60N or H C25
C60N or H C20
C60N or H C20
PF65
PF40
PF20
PF8
15684
15687
15692
15695
C60N or H C50
C60N or H C40
C60N or H C25
C60N or H C20
Telecommunications and computer equipment protection
Surge arrester
Reference
PRC
PRI
PRI
Schneider Electric Industries SAS
Electrical Distribution Communication
38050 Grenoble Cedex 9 - France
Tel.: +33 (0)4 76 57 60 60
www.schneider-electric.com
M9DP80CEn
200V
<6V
<48V
16593
16594
16595
As standard specifications and designs change from time to time, please ask for
confirmation of the information given in this publication.
Realization: Schneider Electric
Design: Félix Création
Photos: Schneider Electric
08.2007