Surge arresters
PRD draw out, PF, EM/RM remote indication
Application
A surge arrester is a device designed to limit transient overvoltages to a
non-dangerous value for the installation and electrical switchgear.
Common technical data
80
Permanent operating full withstand current
(Uc): permissible r.m.s. value that can be
continuously applied to the surge arrester's
terminals without affecting its operation.
It must be higher than the system rated voltage,
including variations:
For protection between active conductors
and the earth:
TT: Uc 1.5 Uo,
TN: Uc 1.1 Uo (1.5 Uo in France),
IT: Uc e Uo.
For protection between phases and the neutral:
TT, TN, IT: Uc 1.1 Uo.
Residual voltage (Ures): the peak value of the
voltage that appears at surge arrester terminals
when a discharge current runs through them.
Simple system voltage (Uo): the voltage
between phase and neutral.
System rated voltage (Un): value of the
reference voltage which designates the network
Level of protection (Up): voltage that
characterises the protection performance of a
surge arrester at In.
Full discharge current (Imax): maximum
peak value of the discharge current with a
8/20s wave form which the surge arrester
can withstand one time.
Rated discharge current (In): peak value of the
discharge current with a 8/20s wave form used
to designate a surge arrester.
Permanent operating current (Ic): current that
circulates in the surge arrester, when it is supplied
under permanent operating full withstand current
(Uc) in the absence of a fault.
Common mode overvoltages (MC):
overvoltages that appear between active
conductors and protective conductor.
Differential mode overvoltages (MD):
overvoltages that appear between active
conductors (phase/neutral).
New
Surge arresters
New
PRD draw out
PRD
Application
PRD removable surge arresters allow the rapid replacement of damaged
cartridges. Removable surge arresters PRD 65r, PRD 40r have a remote
indication function.
Uc voltage depends on:
The earthing system.
The protection mode (MC/MD).
16561
Each surge arrester in the range has a specific
use:
Incomer end protection:
The PRD 65r is recommended for a very high risk
level (highly exposed site),
PRD 40r/PRD 40 are recommended for a high
risk level,
The PRD 15 is recommended for a low risk level.
Secondary protection:
The PRD 8 ensures secondary protection of loads
to be protected and is placed in a cascading
configuration with surge arresters at the incomer
end.
Common technical data for PRDs
Frequency: 5060Hz.
Ic:
1P and 3P: < 800A,
1P+N and 3P+N: 0A.
Operation indication by means of a
mechanical indicator:
White: normal operation,
White/red: cartridge replacement to be scheduled
in the near future,
Red: cartridge must be immediately replaced.
Disconnection of the short circuited surge arrester
to be conducted with a circuit breaker.
Permissible internal short circuit current for
PRD 8 and PRD 15:
1P+N, 3P and 3P+N: 10kA,
1P (230 V): 10kA,
1P (400): 3kA.
Permissible internal short circuit current for
PRD 40 and PRD 65:
1P+N, 3P and 3P+N: 25kA,
1P (230 V): 10kA,
1P (400): 3kA.
Downstream and upstream terminal
connection:
2.5 to 16mm2 flexible cable,
2.5 to 25mm2 rigid cable,
10mm2 flexible or rigid cable if installation with
lightning conductor.
Operating temperature: -25C, +60C.
Storage temperature: -40C, +70C.
Protection class:
IP20 at terminals,
IP40 on front panel.
Weight (g):
1P: 90,
1P+N: 180,
3P: 395,
3P+N: 460.
Specific technical data
PRD 65r
Imax (8/20 s): 65kA.
In (8/20 s): 20kA.
Operating back-up indicator on front panel.
Remote indication contact:
Electrical data:
DC: 12V, 10mA,
AC: 250V, 1A.
Connection using 0.5mm2 to 1.5mm2 cable.
PRD 40r/PRD 40
Imax (8/20 s): 40kA.
In (8/20 s): 15kA.
The PRD 40r includes:
Operating back-up indicator on front panel.
Remote indication contact:
Electrical data:
DC: 12V, 10mA,
AC: 250V, 1A.
Connection using 0.5mm2 to 1.5mm2 cable.
PRD 15
Imax (8/20 s): 15kA.
In (8/20 s): 5kA.
PRD 8
Imax (8/20 s): 8kA
In (8/20 s): 2kA.
Spare cartridges
40, 15, 8kA and neutral cartridges.
The C65r, C40r and C neutral r cartridges have
operating back-up.
Auxiliaries
Adaptable remote indication modules, EM/RM.
standards
IEC 61643-11 class 2 test.
NF C 61740/95.
81
Surge arresters
New
PRD draw out
Type
PRD
1P
PRD 65r
PRD 40r
PRD 40
PRD 15
PRD 8
Un
(V)
230
230
230
230
230
230
230
230
230
230
Uc MC
(V)
440
275
440
275
440
275
440
275
440
275
Up
(kV)
2
1.5
1.8
1.2
1.8
1.2
1.8
1.2
1.8
1.2
Width in 18mm
SP ways
1
1
1
1
1
1
1
1
1
1
Part No.
Uc MC/MD
(V)
440/275
440/275
440/275
440/275
440/275
Up
(kV)
1.2 (1)
1.2
1.2
1.2
1.2
Width in 18mm
SP ways
2
2
2
2
2
Part No.
Uc MC
(V)
440
440
440
440
440
Up
(kV)
2
1.8
1.8
1.8
1.8
Width in 18mm
SP ways
3
3
3
3
3
Part No.
16555
16556
16560
16561
16565
16566
16570
16571
16575
16576
16561
Type
PRD
1P+N
Un
(V)
PRD 65r
230
PRD 40r
230
PRD 40
230
PRD 15
230
PRD 8
230
(1) Up: L/
=1.5kV
L/N=1.5kV
L
N
16557
16562
16567
16572
16577
16562
Type
PRD
3P
PRD
PRD
PRD
PRD
PRD
L3
L2
L1
L1
82
L2
L3
65r
40r
40
15
8
Un
(V)
400
400
400
400
400
16558
16563
16568
16573
16578
Surge arresters
New
PRD draw out
Type
PRD
3P+N
Un
(V)
PRD 65r
400
PRD 40r
400
PRD 40
400
PRD 15
400
PRD 8
400
(1) Up: L/
=1.5kV.
L/N=1.5kV.
L3
L2
L1
N
L1
L2
Uc MC/MD
(V)
440/275
440/275
440/275
440/275
440/275
Up
(kV)
1.2 (1)
1.2
1.2
1.2
1.2
Width in 18mm
SP ways
4
4
4
4
4
Part No.
Uc MC
(V)
440
275
440
275
440
275
440
275
440
275
440
440
Up
(kV)
2
1.5
1.8
1.2
1.8
1.2
1.8
1.2
1.8
1.2
1.2
1.2
Width in 18mm
SP ways
1
1
1
1
1
1
1
1
1
1
1
1
Part No.
16559
16564
16569
16574
16579
L3
Replacement spare
cartridges
C65r-440
C65r-275
C40r-440
C40r-275
C40-440
C40-275
C15-440
C15-275
C8-440
C8-275
C neutral r
C neutral
16580
16581
16582
16583
16584
16585
16586
16587
16588
16589
16590
16591
83
Surge arresters
New
PF
PF
Application
The PF self-contained, multiple pole surge arrester range is especially adapted to
TT, TN-S and IT earthing systems. PF surge arresters PF65r and PF30r have a
remote indication function.
15689
Each surge arrester in the range has a specific
use:
Incomer end protection:
The PF65r is recommended for a very high risk
level (highly exposed site),
PF30r/PF30 are recommended for a high risk
level,
The PF15 is recommended for a low risk level.
Secondary protection:
The PF8 ensures the secondary protection of
loads to be protected and is placed in a cascading
configuration with surge arresters at the incomer
end.
Common technical data for PFs
PF30r and PF30
Frequency: 5060Hz.
Max. leakage current < 200mA.
Operation indication by means of an orange
indicator:
Not lit: ok,
Flashing: surge arrester must be immediately
replaced.
Disconnection upon thermal overload built into
the surge arrester.
Disconnection of the short-circuited surge arrester
to be with a circuit breaker.
Permissible internal short circuit current for
PF8 and PF15:
1P+N and 3P+N: 10kA.
Permissible internal short circuit current for PF30
and PF65:
1P+N and 3P+N: 25kA.
Operating temperature: -25C to +60C.
Storage temperature: -40C to +70C.
Protection class:
IP20 at terminals,
IP40 on front panel.
Weight (g):
1P+N: 475,
3P+N: 650.
Standard
84
PF15
NF C 61740/95.
Specific technical data
PF65r
Common mode protection:
Imax (8/20s): 65kA,
In (8/20s): 20kA,
Up: 2kV.
Test button for front panel indicator.
Remote indication contact:
Normally closed,
Connection using tunnel terminals 2 x 2.5mm2.
Connection using tunnel terminals:
Phase and neutral: 25mm2.
Earth: 50mm2.
Flexible or solid cable 10 mm2.
Common mode protection:
Imax (8/20s): 30kA,
In (8/20s): 10kA,
Up: 1.8kV.
Test button for front panel indicator.
The PF30r has a built-in remote indication
contact:
Normally closed,
Connection using tunnel terminals 2 x 2.5mm2,
Connection using tunnel terminals:
Phase and neutral: 25mm2,
Earth: 50mm2.
Flexible or solid cable 10mm2.
Common mode protection:
Imax (8/20s): 15kA,
In (8/20s): 5kA,
Up: 1.8kV.
Differential mode protection:
Imax (8/20s): 8kA,
In (8/20s): 2kA,
Up: 1kV.
Connection using tunnel terminals:
Phase and neutral: 16mm2,
Earth: 25mm2,
Flexible or rigid cable 10mm2 if installation using
lightning conductor.
PF8
Common mode protection:
Imax (8/20s): 8kA,
In (8/20s): 2kA,
Up: 1.5kV.
Differential mode protection:
Imax (8/20s): 8kA,
In (8/20s): 2kA,
Up: 1kV.
Connection using tunnel terminals:
Phase and neutral: 16mm2,
Earth: 25mm2,
Flexible or rigid cable 10mm2 if installation using
lightning conductor.
Surge arresters
New
PF
Type
PF
1P+N
PF
PF
PF
PF
PF
L1
N
Uc
(V)
440
440
440
440
440
In
(kA)
20
10
10
5
2
Width in 18mm
SP ways
7
3
3
2
2
Part No.
65r
30r
30
15
8
Un
(V)
400
400
400
400
400
Uc
(V)
440
440
440
440
440
In
(kA)
20
10
10
5
2
Width in 18mm
SP ways
7
4
4
4
4
Part No.
65r
30r
30
15
8
Un
(V)
400
400
400
400
400
15684
15689
15687
15692
15695
L1
15689
Type
PF
3P+N
PF
PF
PF
PF
PF
L3
L2
L1
N
L1
L2
15685
15690
15688
15693
15696
L3
85
Surge arresters
EM/RM remote indication modules
New
Application
The EM/RM remote indication modules are made up of two optical blocks, a
transmitter and a receiver. They are designed to remotely signal the disconnection
of the surge arrester.
The EM transmitter is mounted to the left and the
RM receiver to the right side of a surge arrester.
The RM receiver has an output contact for the
remote transfer of surge arrester disconnection
information.
The modules can monitor up to 15 surge arrester
modules (18mm) with a limit of 270mm.
Technical data
Voltage rating: 230V AC.
Frequency: 5060Hz.
Surge arrester status indication: by means of
green and red indicators on the front panel
Output contact:
NO/NC (closed between terminals 2 and 4 if fault
on surge arrester),
Min. power: 6V DC and 10mA,
Max. power: 250V AC and 5A,
Insulation between contacts: 1kV AC,
Insulation between the contacts and the coil:
2.5kV AC.
Flexible or solid cable connection:
Up to 2.5mm2.
Operating temperature: -20C, +40C.
Storage temperature: -40C, +70C.
Weight (g): 20.
Type
Remote indication module
EM/RM
L
N
1 3
86
1 3
2 4
Width in 18mm Part No.
SP ways
1+1
16592
