protection load protection
surge arresters
function
A surge arrester is a devicedesigned to limit transient overvoltages and to run current waves to the ground, so as to limit the amplitude of this overvoltage to a non dangerous value for the installation and electrical switchgear.
description
a few definitions c surge arrester: device designed to limit transient atmospheric overvoltages as well as to run lightning current waves to the ground c permenant operating full withstand current (Uc): permissable r.m.s. value that can be continuously applied to the surge arrestor's terminals without affecting its operation Uc is surge arrester data. It must be higher than the system rated voltage, including variations: v 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 ≥ eUo v for protection between phases and the neutral: -TT, TN, IT: Uc ≥ 1.1 Uo c residual voltage (Ures): the peak value of the voltage that appears at surge arrester terminals when a discharge current runs through them c simple system voltage (Uo): the voltage between phase and neutral
90159/2
Updated 28/03/00
c system rated voltage (Un): value of the reference voltage which designates the network c level of protection (Up): voltage that characterises the protection performance of a surge arrester at In c full discharge current (Imax): maximum peak value of the discharge current with a 8/ 20 µs wave form which the surge arrestor can withstand one time c rated discharge current (In): peak value of the discharge current with a 8/ 20 µs wave form used to designate a surge arrester c permenant operating current (Ic): current that circulates in the surge arrester, when it is supplied under permenant operating full withstand current (Uc) in the absence of a fault c common mode overvoltages (MC): overvoltages that appear between active conductors and protective conductor c differential mode overvoltages (MD): overvoltages that appear between active conductors (phase/neutral).
Merlin Gerin
protection load protection
PRD draw-out surge arresters
function
PRD removable surge arresters enable the rapid replacement of damaged cartridges. Removable surge arresters with indication (PRD 65r, PRD 40r) have visualisation as well as the remote transfer of "cartridge to be replaced" information. the Uc voltage depends on: c the earthing system c the protection mode (MC/MD).
Each surge arrester in the range has a specific use: c Incomer end protection: v the PRD 65r is recommended for a very high risk level (highly exposed site) v PRD 40r/PRD 40 are recommended for a high risk level v the PRD 15 is recommended for a low risk level c secondary protection: v 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.
description
common technical data for PRDs c frequency: 50…60 Hz c Ic: v 1P et 3P: < 800 µA v 1P+N and 3P+N: 0 µA c operation indication by means of a mechanical indicator: v white: normal operation v white/red: cartridge replacement to be scheduled in the near future v red: cartridge must be immediately replaced c disconnection of the short-circuited surge arrester to be conducted with a circuit-breaker (refer to choice table page 92506/2) c permissible internal short-circuit current for PRD 8 and PRD 15: v 1P+N, 3P and 3P+N: 10 kA v 1P (230 V): 10 kA v 1P (400): 3 kA c permissible internal short-circuit current for PRD 40 and PRD 65: v 1P+N, 3P and 3P+N: 25 kA v 1P (230 V): 10 kA v 1P (400): 3 kA c downstream and upstream terminal connection: v 2.5 to 16 mm2 flexible cable v 2.5 to 25 mm2 rigid cable v ≥10 mm2 flexible or rigid cable if installation with lightning conductor c operating temperature: -25 °C, +60 °C c storage temperature: -40 °C, +70 °C c protection class: v IP20 at terminals v IP40 on front panel c weight (g): v 1P: 90 v 1P+N: 180 v 3P: 395 v 3P+N: 460.
PRD 65r
c Imax (8/20 µs): 65 kA c In (8/20 µs): 20 kA c operating back-up indicator on front panel c remote indication contact: v electrical data: DC: 12 V, ≥ 10 mA AC: 250 V, ≤ 1 A v connection using 0.5 mm2 to 1.5 mm2 cable.
PRD 40r/PRD 40
c Imax (8/20 µs): 40 kA c In (8/20 µs): 15 kA c the PRD 40r includes: v operating back-up indicator on front panel v remote indication contact: - electrical data: DC: 12 V, ≥ 10 mA AC: 250 V, ≤ 1 A - connection using 0.5 mm2 to 1.5 mm2 cable.
PRD 15
c Imax (8/20 µs): 15 kA c In (8/20 µs): 5 kA.
PRD 8
c Imax (8/20 µs): 8 kA c In (8/20 µs): 2 kA.
spare cartridges c 40, 15, 8 kA and neutral cartridges c the C65r, C40r and C neutral r cartridges have operating back-up.
auxiliaries c adaptable remote indication modules, EM/ RM (see 90159/15).
standards c IEC 61643-11 class 2 test c NF C 61740/95. specific technical data
Merlin Gerin
Updated 28/03/00
90159/3
protection load protection
PRD draw-out surge arresters
catalogue numbers
type
Un (V)
Uc (V) MC
Up (kV)
cat. no.
width in mod. of 9 mm
230 230 230 230 230 230 230 230 230 230
440 275 440 275 440 275 440 275 440 275
2 1.5 1.8 1.2 1.8 1.2 1.8 1.2 1.8 1.2
16555 16556 16560 16561 16565 16566 16570 16571 16575 16576
2 2 2 2 2 2 2 2 2 2
Un (V)
Uc (V) MC/MD
Up (kV)
cat. no.
width in mod. of 9 mm
230 230 230 230 230
440/275 440/275 440/275 440/275 440/275
1.2 (1) 1.2 1.2 1.2 1.2
16557 16562 16567 16572 16577
4 4 4 4 4
Un (V)
Uc (V) MC
Up (kV)
cat. no.
width in mod. of 9 mm
400 400 400 400 400
440 440 440 440 440
2 1.8 1.8 1.8 1.8
16558 16563 16568 16573 16578
6 6 6 6 6
PRD 1P
PRD 65r PRD 40r PRD 40 PRD 15 PRD 8
L
16555
type
PRD 1P+N
PRD 65r PRD 40r PRD 40 PRD 15 PRD 8 (1) Up: L/ =1.5 L/N=1.5
L N
N
L
16572
type
PRD 3P
PRD 65r PRD 40r PRD 40 PRD 15 PRD 8
L3 L2 L1
L1
L2
L3
16558
90159/4
Updated 28/03/00
Merlin Gerin
protection load protection
PRD draw-out surge arresters
catalogue numbers
type
Un (V)
Uc (V) MC/MD
Up (kV)
cat. no.
width in mod. of 9 mm
400 400 400 400 400
440/275 440/275 440/275 440/275 440/275
1.2 (1) 1.2 1.2 1.2 1.2
16559 16564 16569 16574 16579
8 8 8 8 8
Uc (V) MC
Up (kV)
cat. no.
width in mod. of 9 mm
440 275 440 275 440 275 440 275 440 275 440 440
2 1.5 1.8 1.2 1.8 1.2 1.8 1.2 1.8 1.2 1.2 1.2
16580 16581 16582 16583 16584 16585 16586 16587 16588 16589 16590 16591
2 2 2 2 2 2 2 2 2 2 2 2
PRD 3P+N
PRD 65r PRD 40r PRD 40 PRD 15 PRD 8 (1) Up: L/ =1.5 L/N=1.5
L3 L2 L1 N
16559
N
L1
L2
type
L3
cartridges
16580
Merlin Gerin
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
Updated 28/03/00
90159/5
protection load protection
PF surge arresters
function
The PF all-contained, multiple pole surge arrester range is especially adapted to TT, TN-S and IT earthing systems. PF surges arresters with indication (PF65r and PF30r) have visualisation as well as remote transfer of "cartridge to be replaced" information.
Each surge arrestor in the range has a specific use: c incomer end protection: v the PF65r is recommended for a very high risk level (highly exposed site) v PF30r/PF30 are recommended for a high risk level v the PF15 is recommended for a low risk level c secondary protection: v the PF8 ensures the secondary protection of loads to be protected and is placed in a cascading configuration with surge arrestors at the incomer end.
description
common technical data c frequency: 50…60 Hz c max. leakage current < 200 µA c operation indication by means of an orange indicator: v not lit: ok v flashing: surge arrester must be immediately replaced c disconnection upon thermal overload builtinto the surge arrester c disconnection of the short-circuited surge arrester to be conducted with a circuitbreaker (refer to choice table page 92506/2) c permissible internal short-circuit current for PF8 and PF15: v 1P+N and 3P+N: 10 kA c permissible internal short-circuit current for PF30 and PF65: v 1P+N and 3P+N: 25 kA c operating temperature: -25 °C to +60 °C c storage temperature: -40 °C to +70 °C c protection class: v IP20 at terminals v IP40 on front panel c weight (g): v 1P+N: 475 v 3P+N: 650.
PF65r
standard c NF C 61740/95. specific technical data
c common mode protection: v Imax (8/20 µs): 65 kA v In (8/20 µs): 20 kA v Up: 2 kV c test button for front panel indicator c remote indication contact: v normally closed v connection using tunnel terminals 2 x 2.5 mm2 c connection using tunnel terminals: v phase and neutral: 25 mm2 v earth: 50 mm2. v flexible or rigid cable ≥10 mm2 if installation using lightning conductor.
PF30r and PF30 c common mode protection: v Imax (8/20 µs): 30 kA v In (8/20 µs): 10 kA v Up: 1.8 kV c test button for front panel indicator c the PF30r has a built-in remote indication contact: v normally closed v connection using tunnel terminals 2 x 2.5 mm2 c connection using tunnel terminals: v phase and neutral: 25 mm2 v earth: 50 mm2. v flexible or rigid cable ≥10 mm2 if installation using lightning conductor.
PF15 c common mode protection: v Imax (8/20 µs): 15 kA v In (8/20 µs): 5 kA v Up: 1.8 kV c differential mode protection: v Imax (8/20 µs): 8 kA v In (8/20 µs): 2 kA v Up: 1 kV c connection using tunnel terminals: v phase and neutral: 16 mm2 v earth: 25 mm2. v flexible or rigid calbe ≥10 mm2 if installation using lightning conductor.
PF8 c common mode protection: v Imax (8/20 µs): 8 kA v In (8/20 µs): 2 kA v Up: 1.5 kV c differential mode protection: v Imax (8/20 µs): 8 kA v In (8/20 µs): 2 kA v Up: 1 kV c connection using tunnel terminals: v phase and neutral: 16 mm2 v earth: 25 mm2. v flexible or rigid cable ≥10 mm2 if installation using lightning conductor.
90159/6
Updated 28/03/00
Merlin Gerin
protection load protection
PF surge arresters
catalogue numbers
type
Un (V)
Uc (V) MC
In (kA)
cat. no.
width in mod. of 9 mm
1P+N
400
440
20
15684
14
3P+N
400
440
20
15685
14
PF65r
L3 L2 L1 N
L1 N
N
L1
N
L1
L2
L3
15685
15684
15685
PF30r 1P+N
400
440
10
15689
6
3P+N
400
440
10
15690
8
1P+N
400
440
10
15687
6
3P+N
400
440
10
15688
8
PF30
15687
L3 L2 L1 N
L1 N
N
N
L1
L1
L3
15688, 15690
15687, 15689
type
L2
Un (V)
Uc (V) MC/MD
In (kA)
cat. no.
width in mod. of 9 mm
1P+N
400
440/250
5
15692
4
3P+N
400
440/250
5
15693
8
PF15
L3 L2 L1 N
L1 N
15692
N
L1
15692
Merlin Gerin
N
L1
L2
L3
15693
Updated 28/03/00
90159/7
protection load protection
PF surge arresters
catalogue numbers
type
Un (V)
Uc (V) MC/MD
In (kA)
cat. no.
width in mod. of 9 mm
1P+N
400
440/250
2
15695
4
3P+N
400
440/250
2
15696
8
PF8
L3 L2 L1 N
L1 N
15695
N
15695
L1
N
L1
L2
L3
15696
15696
90159/8
Updated 28/03/00
Merlin Gerin
protection load protection
PE surge arresters TN-C and IT earthing systems function
The 4 PE surge arresters are particularly adapted to earthing systems: TN-C and IT. Each surge arrester in the range has a specific use: c incomer end protection: v the PE65 is recommended for a very high risk level (highly exposed site)
description
common technical data c frequency: 50…60 Hz c Uc: permanent operating full withstand current: 440 V c Ic: permanent operating current: < 1 mA c disconnection of short-circuited surge arrester to be conducted with a circuitbreaker (refer to choice table page 92506/2) c permissible internal short-circuit current: 3 kA c connection using tunnel terminals: v phase, neutral and earth: 25 mm2 rigid and 16 mm2 flexible c min. phase/neutral/earth cross-section: v 4 mm2 without lightning conductor v 10 mm2 with lightning conductor c protection class: v IP20 at terminals v IP40 on front panel c operating temperature: -25 °C, +60 °C c storage temperature: -40 °C, +70 °C c weight (g): v PE8: 130 v PE15: 130 v PE40: 138 v PE65: 166.
v the PE40 is recommended for a high risk level v the PE15 is recommended for a low risk level c secondary protection: v the PE8 ensures the secondary protection of loads to be protected and is placed in a cascading configuration with the surge arresters at the incomer end.
PE65
c Imax (8/20 µs): 65 kA c In (8/20 µs): 20 kA c Up: 2 kV c operation indication by means of a mechanical indicator: v white: normal operation v white/red: surge arrester replacement to be scheduled in the near future v red: surge arrester must be immediately replaced.
PE40
c Imax (8/20 µs): 40 kA c In (8/20 µs): 10 kA c Up: 1.8 kV c operation indication by means of a mechanical indicator: v white: normal operation v red: surge arrester must be immediately replaced.
PE15
standard c NF C 61740/95.
c Imax (8/20 µs): 15 kA c In (8/20 µs): 5 kA c Up: 1.8 kV c operation indication by means of a mechanical indicator: v white: normal operation v red: surge arrester must be immediately replaced.
specific technical data
PE8
c Imax (8/20 µs): 8 kA c In (8/20 µs): 2 kA c Up: 1.5 kV c operation indication by means of a mechanical indicator: v white: normal operation v red: surge arrester must be immediately replaced.
auxiliaries c adaptable remote indication modules, EM/ RM (see 90159/15).
Merlin Gerin
Updated 28/03/00
90159/9
protection load protection
PE surge arresters TN-C and IT earthing systems catalogue numbers
type
Un (V)
Uc (V) MC
In (kA)
cat. no.
width in mod. of 9 mm
400 400 400 400
440 440 440 440
20 10 5 2
15683 15686 15691 15694
2 2 2 2
PE PE65 PE40 PE15 PE8 L/N
15683
L
MERLIN GERIN
multi 9 PE65 Imax In Up Uc
65kA (8/20) 100kA (4/10) 20kA (8/20) 2 kV 440V
MERLIN GERIN
multi 9 PE65
or
Imax In Up Uc
65kA (8/20) 100kA (4/10) 20kA (8/20) 2 kV 440V
if red replace
if red replace
15683
15683
N
90159/10
Updated 28/03/00
Merlin Gerin
protection load protection
ST surge arresters
function
ST surge arresters are designed to protect equipment on energy networks using TN-S and TN-C earthing systems. They are not recommended on TT systems and are forbidden on IT systems. Each surge arrester in the range has a specific use:
c incomer end protection: v the STH is recommended for a very high risk level (highly exposed site) v STMs are recommended for a high risk level c secondary protection: v the STD ensures secondary protection of loads to be protected and is placed in a cascading configuration with surge arresters at the incomer end.
description
common technical data c frequency: 50…60 Hz c Uc: 275 V c operation indication by means of a mechanical indicator: v white: normal operation v red: surge arrester must be immediately replaced c disconnection of the short-circuited surge arrester to be conducted with a circuitbreaker (refer to choice table page 92506/2) c permissible internal short-circuit current for STD: 10 kA c permissible internal short-circuit current for STM and STH: v 1P+N, 3P and 3P+N: 25 kA v 1P: 10 kA c upstream and downstream terminal connection: v flexible cable: 2.5 to 16 mm2 v rigid cable: 2.5 to 25 mm2 v flexible or rigid cable ≥10 mm2 if installation with lightning conductor c operating temperature: -25 °C, +60 °C c storage temperature: -40 °C, +70 °C c protection class: v IP20 at terminals v IP40 on front panel c weight (g): v 1P: 60 v 1P+N: 106 v 3P: 220 v 3P+N: 250.
specific technical data
STH c common mode protection: v Imax (8/20 µs): 65 kA v In (8/20 µs): 20 kA v Up: 1.5 kV.
STM c common mode protection: v Imax (8/20 µs): 40 kA v In (8/20 µs): 15 kA v Up: 1.2 kV.
STD c common mode protection: v Imax (8/20 µs): 10 kA v In (8/20 µs): 5 kA v Up: 1.2 kV c differential mode protection: v Imax (8/20 µs): 10 kA v In (8/20 µs): 3 kA v Up: 1 kV.
auxiliaries c adaptable remote indication modules, EM/ RM (see 90159/15).
standard v IEC 61643-11 class 2 test.
catalogue numbers
type
Un (V))
Uc (V) MC
Up (kV)
cat. no.
width in mod. of 9 mm
230 230 230
275 275 275
1.5 1.2 1.2
16608 16604 16600
2 2 2
ST 1P
STH STM STD
L
L
16608
Merlin Gerin
Updated 28/03/00
90159/11
protection load protection
ST surge arresters
catalogue numbers
type
Un (V))
Uc (V) MC/MD
Up (kV)
cat. no.
width in mod. of 9 mm
230 230 230
275 275 275
1.5 1.2 1.2 (1)
16609 16605 16601
4 4 4
Un (V))
Uc (V) MC
Up (kV)
cat. no.
width in mod of 9 mm
400 400 400
275 275 275
1.5 1.2 1.2
16610 16606 16602
8 8 8
Un (V))
Uc (V) MC/MD
Up (kV)
cat. no.
width in mod. of 9 mm
400 400 400
275 275 275
1.5 1.2 1.2 (1)
16611 16607 16603
8 8 8
ST 1P+N
STH STM STD (1) Up: in MD Up = 1
L N
N
L
16605
type
ST 3P
STH STM STD
L3 L2 L1
L1
L2
L3
16606
type
ST 3P+N
STH STM STD (1) Up: in MD Up = 1 L3 L2 L1 N
N
L1
L2
L3
16611
90159/12
Updated 28/03/00
Merlin Gerin
protection load protection
parallel connection and series connection PRC surge arresters function
PRC surge arresters are designed to protect equipment connected to analogue telephone networks: telephone lines, current or telephone transmitter loops (telephones,
answering machines, minitels, modems, fax machines).
description
technical data c frequency: 50…60 Hz c Un: 200 V AC c maximum voltage of the signal to be transmitted: 220 V c Up: v parellel PRC: 700 V v series PRC: 300 V c Imax (8/20 µs): 10 kA c In (8/20 µs): 5 kA c pass-band: v parellel PRC: 100 MHz v series PRC: 3 MHz c rated current: v PRC series: 20 mA c withstand 50 Hz (15 min): 25 A c number of protected pairs: 1 c operation indication on the series PRC, by means of a mechanical indicator: v white: normal operation v red: surge arrester must be immediately replaced
c connection: using tunnel terminals for 0.5 to 2.5 mm2 cable c operating temperature: -25 °C, +60 °C c storage temperature: -40 °C, +70 °C c protection class: v IP20 at terminals v IP40 on front panel c weight (g): 65.
type
cat. no.
width in mod. of 9 mm
parellel PRC
15462
2
16593
2
catalogue numbers
auxiliaries c adaptable remote indication modules, EM/RM (see 90159/15).
telephon network telephone network 13 5 PRC
MERLIN GERIN
multi 9
TRC1 F E GB I NL/B 16420
15462
series PRC telephon network telephone network 13 5 PRC
MERLIN GERIN
multi 9
24 6
TRC1 F E GB I NL/B 16420
15493
Merlin Gerin
Updated 28/03/00
90159/13
protection load protection
PRI surge arresters
function
PRI surge arresters are designed to protect sensitive equipment on digital telephone networks and automated systems (PRI
12…48 V) as well as on computer or data networks (PRI 6 V).
description
technical data c frequency: 50…60 Hz c Un: v PRI 12…48 V v PRI 6 V c maximum voltage of the signal to be transmitted: v PRI 12…48 V: 53 V v PRI 6 V: 7 V c Up: v PRI 12…48 V: 70 V v PRI 6 V: 15 V c Imax (8/20 µs): 10 kA c In (8/20 µs): 5 kA c rated current: 20 mA c max. rated current: 100 mA c withstand 50 Hz (15 min): 25 A c number of protected pairs: 1 c pass-band: v PRI 12…48 V: 6 MHz v PRI 6 V: 80 MHz
c operation indication by means of a mechanical indicator: v white: normal operation v red: surge arrester must be immediately replaced c connection: using tunnel terminals for 0.5 to 2.5 mm2 cable c operating temperature: -25 °C, +60 °C c storage temperature: -40 °C, +70 °C c protection class: v IP20 at terminals v IP40 on front panel c weight (g): 65.
catalogue numbers
type
auxiliaries c adaptable remote indication modules, EM/ RM (see 90159/15)
tension Un (V)
In (kA)
cat. no.
width in mod. of 9 mm
12…48 6
5 5
16595 16594
2 2
PRI
network
L1 L2 13 5 PRI
24 6
16594
90159/14
I1 I2
load supply
Updated 28/03/00
Merlin Gerin
protection load protection
EM/RM remote indication modules
function
The adaptable EM/RM remote indication modules are made up of two optical blocks, a transmitter and a receiver. They are designed to remotely signal the transfer to back-up or the disconnection of the combined surge arrester c the EM transmitter is mounted to the left and the RM receiver to the right side of a PRD, PE, PRC, PRI, STH, STM or STD
surge arrester. c the RM receiver has an output contact for the remote transfer of surge arrester disconnection information c the module can monitor up to 15 surge arrester modules (18 mm) with a limit of 270 mm.
description
technical data c voltage rating: 230 V AC c frequency: 50…60 Hz c surge arrester status indication: by means of green and red indicators on the front panel c output contact: v NO/NC (closed between terminals 2 and 4 if fault on surge arrester) v min. power: 6 V DC and 10 mA v max. power: 250 V AC and 5 A v insulation between contacts: 1 kV AC v insulation between the contacts and the coil: 2.5 kV AC
c flexible or rigid cable connection: v up to 2.5 mm2 c operating temperature: -20 °C, +40 °C c storage temperature: -40 °C, +70 °C c weight (g): 20.
type
cat. no.
width in mod. of 9 mm
16592
2+2
catalogue numbers
remode indication module EM/RM L N
1 3 5
1 3 5
2 4 6
16592
additional information Merlin Gerin
dimensions: page 90148/2 practical advice: page 92506/2
Updated 28/03/00
90159/15
