129415753-abb

ABB Lightning Protection Group 1

Overvoltage ProtectionOVRRange

FRSOX 0104 04 GB

2 ABB Lightning Protection Group

OVR 3L - 40 - 275 s P TS

OVR Range CodificationOVR Range CodificationOVR Range CodificationOVR Range CodificationOVR Range Codification

Max. discharge Max. dischargecurrent 8/20, current 10/350,Imax (kA): 10 Iimp (kA): 7

15 154065

100

s: with safety reserve P: pluggable unitNothing: single block

Network1N: single phase (left) - neutral (right)3N: three phases (left) - neutral (right)N1: neutral (left) - single phase (right)N3: neutral (left) - three phases (right)2L: two poles3L: three poles4L: four polesNothing: single pole

Max. continuousoperating voltage,Uc (V): 660

55044038532027515075

TS: integratedremote control

HL 3LType I (Class I - Class B test)Codification only



Overvoltage Protection

SummaryABB OVR Surge Protective Device ..................................................................................................................... 4Main causes for transient overvoltage .................................................................................................................. 5

Definition of the parameters ......................................................................................................................................... 6Product Selection ............................................................................................................................................................... 8Product Overview ............................................................................................................................................................ 10

OVR Selection Guide ............................................................................................................................................... 14TNS .......................................................................................................................................................................................... 15TN-C-S ................................................................................................................................................................................... 16TNC .......................................................................................................................................................................................... 17TN private home ............................................................................................................................................................... 18TT .............................................................................................................................................................................................. 19TT private home ............................................................................................................................................................... 20

Installation Rules .............................................................................................................................................................. 21

Technical characterics .................................................................................................................................................. 23Type 1 + 2 (class B + C) Products, 275 V ........................................................................................................ 24Type 2 (class C) Products ......................................................................................................................................... 25Surge protective devices for telephone & data transmission lines: OVR TC ............................... 27



ABB OVR Surge Protective Device

Transient overvoltage is a voltage peack of short duration (shorter than a millisecond) which amplitude can reach 20 timesnominal voltage.

Without Surge Protective Device, overvoltage reacheselectrical equipment. The whole surge current flows throughthe equipment and destroys it.

Surge Protective Device limits transient overvoltages anddiverts surge currents to the ground.

Surge Protective Device contains at least one non linear component:

during normal operation, Surge Protective Devices act as an open circuit. when overvoltage reaches the Surge Protective Device, it behaves as a closed circuit.

1.2 kV

6 kV


Parasitic interferencesThese are interferences with different amplitudes and frequencies that areinjected into the electrical supply by the user himself or his environment.

The parasites can, for example, be due to: Arc furnaces Contactors operation Welding equipment Opening circuit breakers Thyristors operation Starting a motor Etc

These interferences have little energy but their short duration, their steep wave front and their peak value (that can reachseveral kilovolts) can have harmful effects on the proper functioning of sensitive equipment causing either disruption orcomplete destruction.

Switching operation on the power distribution systemThe switching of transformers, motors or inductances in general, suddenvariation of load, disconnection of circuit breakers or cut outs (i.e in thedistribution circuits) lead to overvoltages that penetrate the users building.

Significantly, the closer the building is to a generating station or sub station,the higher the overvoltages may be.

It is also necessary to take into account mutual induction effects between thehigh voltage power line and aerial sections of the low voltages lines as well asdirect contact between lines of different voltages caused by accidental breakingof cables.

Surge current

Earthing Earth equipotentiality

Induced overvoltage

Strike on a lightning rod

MV disturbances transmitted to LV

Disturbances generated by the user

The lightning protection device diverts the high strikecurrent to earth, considerably raising the potential of theground close to the building on which it is installed. Thiscauses overvoltages on the electrical equipment directlyvia the earth terminals and induced via the undergroundsupply cables.

Main causes for transient overvoltages

A lightning strike can have a destructive or disturbingeffect on electrical installations situated up to severalkilometers away from the actual point of the strike.

During a storm, cables can transmit the effect of alightning strike to electrical equipment installed insidebuildings.

A lightning protection device (such as a lightning rodor a Faraday cage) installed on a building to protect itagainst the risk of a direct strike (fire) can increase therisk of damage to electrical equipment connected tothe main supply near or inside the building.

Direct strike on overhead line Indirect lightning strike

Lightning strike


Surge Protection Device

Definition of the parametersAim of the protectionSurge protection devices are used to prevent current surges from flowing through the network by diverting them harmlesslyto the ground. They also limit overvoltages to values compatible with the withstand of the equipment or devices connected.

Parameters of the protectionIt can be easily understood from the above that the critical parameters of a surge protective device are its ability to divert highvalues of current to the ground (i.e. to dissipate large amount of energy) and to limit the voltage to the lowest possible level.

Surge current

Earthing Earth equipotentiality

Induced overvoltage

Wave 10/350Iimp Wave 10/350

2

Iimp Iimp2Iimp

Direct lightning strike on a lightning rod Close lightning strike on aerial line

Wave 10/350Wave 8/20

2Iimp

2Iimp Iimp

Distant lightning strike on aerial line

Wave 8/20

Indirect lightning strikeIndirect lightning strike

Wave 8/20

Occurence of waveshapes 10/350 & 8/20.Current surges with two different waveshapes are necessary to represent lightning currents: A long waveshape (10/350 s) which corresponds to a direct lightning strike. A short waveshape (8/20 s) which represents a damped indirect strike.


Maximum current Imax or Iimp.This is the maximum value of a surge current that can be diverted by the surge protective device.Imax is the maximum value of a 8/20 current waveshape. Iimp is the maximum value of a 10/350 current waveshape.

Wave 8/20 s

Wave 8/20. Current impulse with a virtual fronttime of 8 s and a time to half value of 20 s(for representation of an indirect lightning strike).Wave 10/350. Current impulse with a virtualfront time of 10 s and a time to half value of350 s (for representation of a direct lightningstrike).

According to IEC 61643-1 7.6.5:Type 1 (class B) products shall withstand 5 increasing shocks (0.1 Iimp, 0.25 Iimp, 0.5 Iimp, 0.75 Iimp, Iimp) of a 10/350 currentwaveshape.Type 2 (class C) products shall withstand 5 increasing shocks (0.1 Imax, 0.25 Imax, 0.5 Imax, 0.75 Imax, Imax) of a 8/20 currentwaveshape.

The values Imax or Iimp have to be adapted to the expected value of the possible lightning currents.

Nominal discharge current InCrest value of the current through the surge protective device having a current waveshape of 8/20.Type 1 (class B) and Type 2 (class C) surge protective devices shall withstand 15 discharges under In, according toIEC 61643-1 7.6.4.

Maximum continuous operating voltage UcMaximum r.m.s. (root mean square) or d.c. voltage wich may be continuously applied to the surge protective device.It is equal to the rated voltage. It has to take into account the network nominal voltage Un plus the possible tolerances.

Temporary over voltage UTMaximum r.m.s. (root mean square) or d.c. overvoltage that the surge protective device can withstand for a specified timeduration. After application of the temporary overvoltage and in case of failure of the surge protective device, it should be suchthat there is no hazard for personnel, equipment or facility.

50% I

0 8s 20 t (s)

I (A)

max

90% I max

10% I max

I max

Voltage protection level UpVoltage given by the surge protective device while diverting the surge current to the ground.Up must not exceed the voltage withstand value of the equipment connected downstream.

U (V)

U (V)


50 %

< 30 kA 30 to 80 kA 80 to 100 kA 100 to 200 kA > 200 kA

40 %

5 % 4 % 1 %

15 kA Type 1 (Class B) OVR will protect against 95% of direct lightning strikes

Product selectionDetermination of the current capabilityA risk analysis shall be performed to determine the current and the energy dissipation capability.

This analysis is based on three groups of parameters: Environmental parameters: frequency of lightning storms, represented by the number of lightning strikes per year and per

square kilometre (Ng). Installation and equipment parameters: existing lightning rod, power distribution to the installation (overhead or

underground line), position of the equipment in the installation, ... Security parameters: replacement and unavailability cost of the equipment to be protected, risk for the environment

or for human life.

Ng map (Ground Flash Density)

Determination of the voltage protection level (Up)

Surge protection devices must provide a level of protection compatible with the withstand voltage of the equipment.This withstand voltage depends on the type of equipment and its sensitivity.

Electrotechnical Electrical equipment Sensitive electronic Highly sensitiveequipment containing slightly equipment equipment

sensitive electronics

Required protection level Required protection level Required protection level Required protection levelUp 1.8 to 2.5 kV Up 1.5 to 1.8 kV Up 1 to 1.5 kV Up 0.5 to 1 kV

8 < Ng < 1802 < Ng < 8

Lightning strikes frequency according to their amplitude

Exemple: choice of Iimp for Type 1 (Class B) OVR in case of100 kA direct strike (around 95% of strikes are less than 100kA: IEC 61-024-1-1 Annex A, Basic values of lightning currentparameters).

According to international standard IEC 61 643-12 Annex I.1.2,it can be assumed that:

50% of the total lightning current enters the earth termination.

the remaining 50% is distributed among the servicesentering the structure (external conductive parts such aspipes, electrical power and communication lines...). For safecalculation when selecting OVR for the power lines, it isconsidered that these remaining 50% are carried entirely bythese power lines.

The current for each power line is 12.5kA in case of TNS & TT.

50 kA

100 kA

4 x 12.5 kA

50 kA

Power electrical distribution

10

PE


Need for multi-level protectionSometimes it is not possible to find a surge protective device which provides both the required current capability andprotection level. In this case, the protection system has to have two or more levels, with a first device at the entrance of theinstallation (i.e. as close as possible to the point of entrance of the lightning surge), which handles the current capability,and a second device as close as possible to the protected equipment, which gives the required voltage protection level.

The distance between the OVR and the protected equipment must be less than 10 m. If this is not possible (e.g. theequipment is too far away from the entrance panel), then a second surge protection device has to be installed.

Telecommunication lines entering the installation must be protected as well; Grounding connections for all arresters mustbe equipotentially bonded.

Alarm Lights

Heaters

Numeric

al

machine

Numeric

al

machine

Electrica

l plug

MDB

SDB1

SDB3

SDB 2

Type 2

(Class C

)

Surge A

rrestor

OVR4L 1

5-275 P

Type 2 (Class C)

Surge Arrestor

OVR 2L 15-275 P

Type 2

(Class C

)

Surge A

rrestor

OVR1N

10-275

Compute

r

protection

pro

tect

ion

protection

protect

ion

prot

ectio

n

protection

Type 1+2 (Class B+C)

Surge Arrestor

OVR HL 3L 15 440s P TS

protecti

on

Example: TN-C-S Separation of pen in sub distribution board


Mono Block Units

Product overviewMono Block Units/Pluggable units

The operation for changing failed cartridgesis particulary safe:1) the live contacts are inaccessible during the withdrawalphase thanks to a plastic side wall on the cartridge.

2) its impossible to swap a phase cartridge for a neutralcartridge thanks to an exclusive mechanical "arrow"system on the base.

ABB proposes both mono block andpluggable products. With pluggable products, only thecartridge which has reached the end ofservice life needs to be changed. Thanksto this cartridge system, installation timeis consequently much shorter since it isn'tnecessary to disconnect and rewire thedevice (no tools needed).

Pluggable Units


Technical caracteristicsDescription OVR SIGN

Order Code 2CTB 8138 15 R 00 00Nominal voltage Un V 230Maximal continuous operating voltage Uc V 250Frequency Hz 50Number of 17.5 modules 1+1 (1 emitter and 1 receiver)Max. no. of 17.5 mm modules to be monitored 10Emitter + receiver current consumptionat 230 V in watch state mA < 25Contact data

min voltage (DC) V 5min current mA 10max voltage (50 Hz) V 250max current (50 Hz) A 5

Optical link visualisation by green LED on emitter and receiverStatus indicator (fault visualization) Red indicator on receiverDegree of protection IP 203Disconnector (MCB or Fuse) A 2Connecting wire range mm2 0.5 ... 1.5Connecting wire stripping length mm 7Connecting wire tightening torque Nm 0.4Operating and storage temperature C -40 ... +80Maximal altitude m 2000Weight g 300Material of Housing PC grey RAL 7032Fire resistance according to UL 94 V2

Signaling with pluggable OVR ... P TSThe OVR ... P TS surge protective devices feature an auxiliary remote contact for signallingthe end of the product service life. When one or more cartridges need to be replaced,the TS contact activates a remote alarm such as buzzer or light (supplied separately).

Signaling the operating status with TS,OVR SIGN or Status Indicator

The OVR SIGN is a complementary accessory both for mono block andpluggable surge protection devices. It allows easy status monitoring of onemore surge arrestors, up to a maximum of 10 modules.

OVR SIGN is made of 2 modules: an emitter module E, installed to the leftof the devices to be monitored and an receiver module R installed on theright. The optical link between emitter and receiver coupled to a dry contactallows remote alarm indication in addition to the local status indication (statusindicators on OVR SIGN itself).

Min:12 V DC, 10 mAMax:250 V AC, 1 A

OVR SIGN in watch state

OVR SIGN in case of surge arrestor fault

Standard status indicatorSafety reserve(s)

Surge arrester operative

Surge arrester on reserve:to be replaced soon

Surge arrester disconnected:replacement mandatory

res

on

alarm

res

on

alarm

res

on

alarm

on

alarm

on

alarm

OVR ...s P.. OVR ... P..Safety reserve

indicatorStandard

status indicator

=

=

=

OVR...C

OVR....P

OVR SIGN (optical monitoring block kit)


Product overview - Single Pole/Multi Pole

TNC, IT

TN one phase

Surges in common mode.

In TNC, TNS, TT, IT surges can occur between phases and earth (L- ) or between neutral and earth (N- ).

Surges in differential mode.

In TT, surges can also occur between phases themselves (L-L) or between phase and neutral (L-N).

Note: for TNS, differential mode surges do not occur if PE and N cable lengths are similar. This is typically the case for TN-C-S.

On the other hand, TNS can feature differential mode surges if PE and N cables have very different lengths. In such case products for TT shall beselected.

Single PoleSingle pole surge protective devices are used mainly in TNS, TNC and IT.

TNS


Multi PoleMulti pole surge protective devices already feature internal connections which make them readily available for the network they are dedicated to (TNS, TNC, TT, IT)

NL3L2L1

PE

< 10 m 20 m

L < 50 m

L < 250 m

Case 3

Other casesBuilding with height upper than 20 meters

Type 1+2 (Class B+C) Type 2 (Class C)Type 1+2 (Class B+C) 7 kAType 2 (Class C) 65 kA

or15 kA 10 kA - 15 kA or 40 kA

(proximity of building with external lightingprotection or proximity of high point)


Local EBB

L1 L2 L3 PEN

Main EBB

Alarm

On

Alarm

On

Alarm

On

Alarm

On

Alarm

On

Alarm

On

Alarm

On

Alarm

On

OVR OVR OVR OVR

OVR OVR OVR OVR

D1

D3

D2

TNS

Sub Distribution Board

Main Distribution Board

For coordination reasons, cable length between both OVR shall be at least of 5 m

OVR Type 2 (Class C) 10 kA, 15 kA or 40 kAOVR in the sub distribution board is only necessary: If the distance between the upstream OVR in the main distribution board and the equipmentto protect is more than 10 m.

Or if Up given by OVR in the main distribution board is too high with regards to theequipment to protect.

Or if D1 + D2 + D3 > 50 cm.

(1) Only required if a fuse or MCB of the same or smaller nominal value is not already provided in the upstream power supply.(2) P= pluggable unit s= safety reserve TS= contact for remote indication signaling the end of product life.

(If PE and N cables have very different lengths, products for TT shall be selected)

Type Options Up Protection for Protection for2 < Ics < 6 kA Ics 6 kA

(private home) (1) (Industry) (1)

4 x OVR HL-

MCB 50 A MCB 63 ACase OVR

15 kA 15-440 s P TS1.2 kV

curve C, or curve C, or1 Type 1+2 OVR HL 4L

-Fuse type gG Fuse type gG

(Class B+C) 15-440 s P TS 50 A 63 A

OVR 7 kA4 x OVR HL P, P TS, s, MCB 40 A MCB 63 A

Type 1+27-275 s P, s P TS (2) curve C, or curve C, or

(Class B+C)OVR HL 4L P TS, s P, 0.9 kV Fuse type gG Fuse type gG

Case 7-275 P s P TS (2) 40 A 63 A2 4x OVR P, P TS, s,

1.5 kV

MCB 40 A MCB 63 AOVR 65 kA65-275 s P, s P TS (2) curve C, or curve C, or

Type 2OVR 4L P TS, Fuse type gG Fuse type gG(Class C)

65-275 P s P, s P TS (2) 40 A 63 A

Ng4 x OVR P, P TS, MCB 32 A MCB 40 A

40-275 s P, s P TS (2)

1.2 kVcurve C, or curve C, or

C) 2 .5 OVR 4L P TS, Fuse type gG Fuse type gG40-275 P s P, s P TS (2) 25 A 50 A



OVR 3N 10-275 - 0.9 kV

4 x OVR 15-275P, P TS,

1.2 kV

MCB 32 A MCB 40 A

If D1+D2+D3 s P, s P TS (2)curve C, or curve C, or

< 50 cmOVR 4L 15-275 P

P TS,Fuse type gG Fuse type gG

s P, s P TS (2)16 A 40 A

4 x OVR 40-275P, P TS, s,

1.2 kV

MCB 25 A MCB 50 AIf D1+D2+D3 s P, s P TS (2) curve C, or curve C, or

> 50 cmOVR 4L 40-275 P

P TS, Fuse type gG Fuse type gGs P, s P TS (2) 25 A 50 A


Local EBB

PE N

L1 L2 L3 PEN

Main EBB

Alarm

On

Alarm

On

Alarm

On

Alarm

On

Alarm

On

Alarm

On

Alarm

On

OVR OVR OVR OVR

OVR OVR OVR

D1

D3

D2

TN-C-S - Separation of the PEN (PEN PE+N) in the maindistribution board






Or if D1 + D2 + D3 > 50 cm.




OVR 3 x OVR HL-

MCB 50 A MCB 63 ACase Type 1+2 15-440 s P TS

1.2 kVcurve C, or curve C, or

1 (Class B+C) OVR HL 3L-

Fuse type gG Fuse type gG15 kA 15-440 s P TS 50 A 63 A

OVR 3 x OVR HL P, P TS, s, MCB 40 A MCB 63 AType 1+2 7-275 s P, s P TS (2) curve C, or curve C, or

(Class B+C) OVR HL 3L P TS, sP, 0.9 kV Fuse type gG Fuse type gGCase 7 kA 7-275 P s P TS (2) 40 A 63 A

2 OVR 3 x OVR P, P TS, s,

1.5 kV

MCB 40 A MCB 63 AType 2 65-275 s P, s P TS (2) curve C, or curve C, or

(Class C) OVR 3L P TS, Fuse type gG Fuse type gG65 kA 65-275 P s P, s P TS (2) 40 A 63 A

Ng3 x OVR P, P TS,

1.2 kVMCB 32 A MCB 40 A

40-275 s P, s P TS (2) curve C, or curve C, or

C) 2 .5 OVR 3L P TS, 1.2 kVFuse type gG Fuse type gG

40-275 P s P, s P TS (2) 25 A 50 A



OVR 3N 10-275 - 0.9 kV

4 x OVR 15-275P, P TS,

1.2 kV

MCB 32 A MCB 40 A


< 50 cmOVR 4L 15-275 P


s P, s P TS (2)16 A 40 A

4 x OVR 40-275P, P TS, s,

1.2 kV


> 50 cmOVR 4L 40-275 P



Local EBB

PE

L1 L2 L3 PEN

Main EBB

Alarm

On

Alarm

On

Alarm

On

Alarm

On

Alarm

On

Alarm

On

OVR OVR OVR

OVR OVR OVR

D1

D3

D2

TNC - Separation of the PEN (PEN PE+N) in the subdistribution board




OVR Type 2 (Class C) 15 kA or 40 kAOVR in the sub distribution board is only necessary: If the distance between the upstream OVR in the main distribution board and the equipmentto protect is more than 10 m.


Or if D1 + D2 + D3 > 50 cm.




OVR 3 x OVR HL- 1.2 kV

MCB 50 A MCB 63 ACase Type 1+2 15-440 s P TS curve C, or curve C, or

1 (Class B+C) OVR HL 3L- 1.2 kV



(Class B+C) OVR HL 3L P TS, s P, 0.9 kV Fuse type gG Fuse type gGCase 7 kA 7-275 P s P TS (2) 40 A 63 A


1.5 kV



Ng3 x OVR P, P TS,




40-275 P s P, s P TS (2) 25 A 50 A



3 x OVR 15-275P, P TS,

1.2 kV


< 50 cmOVR 3L 15-275 P


3 x OVR 40-275P, P TS, s,

1.2 kV


> 50 cmOVR 3L 40-275 P



Local EBB

PE N

L1 L2 L3 PEN

Main EBB

Alarm

On

Alarm

On

Alarm

On

Alarm

On

Alarm

On

OVR OVR

OVR OVR OVR

D1

D3

D2

TN private Home






Or if D1 + D2 + D3 > 50 cm.









(Class B+C) OVR HL P TS, s P, 0.9 kV Fuse type gG Fuse type gGCase 7 kA 3L 7-275 P s P TS (2) 40 A 63 A


1.5 kV



Ng3 x OVR P, P TS,




40-275 P s P, s P TS (2) 25 A 50 A



OVR 1N 10-275 - 0.9 kV

2 x OVR 15-275P, P TS,

1.2 kV

MCB 32 A MCB 40 A


< 50 cmOVR 2L 15-275 P


s P, s P TS (2)16 A 40 A

2 x OVR 40-275P, P TS, s,

1.2 kV


> 50 cmOVR 2L 40-275 P



Local EBB

L1 L2 L3 PEN

Main EBB

Alarm

On

Alarm

On

Alarm

On

Alarm

NeutralOn

Alarm

On

Alarm

On

OVR OVR OVR OVR

OVR OVR OVR OVR

Neutral

D1

D3

D2

TT




OVR Type 2 (Class C) 10 kA, 15 kA or 40 kA with common and differentialmodes protection (3)OVR in the sub distribution board is only necessary: If the distance between the upstream OVR in the main distribution board and the equipmentto protect is more than 10 m.


Or if D1 + D2 + D3 > 50 cm.


(3) Protection L- : phase-earth, L-N: phase-neutral, N- : neutral-earth.







OVR

1.5 kV

MCB 40 A MCB 63 ACase Type 2 OVR 3N P TS, curve C, or curve C, or

2 (Class C) 65-275 P s P, s P TS (2) Fuse type gG Fuse type gG65 kA 40 A 63 A

NgMCB 32 A MCB 40 A

OVR 3N P TS, 1.2 kVcurve C, or curve C, or

C) 2 .540-275 P s P, s P TS (2) Fuse type gG Fuse type gG

25 A 50 A



OVR 3N 10-275 - 0.9 kV

1.2 kV

MCB 32 A MCB 40 A

If D1+D2+D3OVR 3N 15-275

P, P TS,curve C, or curve C, or

< 50 cm s P, s P TS (2)Fuse type gG Fuse type gG

16 A 40 A

1.2 kV

MCB 25 A MCB 50 AIf D1+D2+D3

OVR 3N 40-275 PP TS, curve C, or curve C, or

> 50 cm s P, s P TS (2) Fuse type gG Fuse type gG25 A 50 A


Local EBB

L1 L2 L3 PEN

Main EBB

Alarm

On

Alarm

On

Alarm

On

Alarm

On

OVR OVR

OVR OVR OVR OVR

Neutral

Neutral

D1

D3

D2

TT private Home




OVR Type 2 (Class C) 10 kA, 15 kA or 40 kA with common and differentialmodes protection (3)OVR in the sub distribution board is only necessary: If the distance between the upstream OVR in the main distribution board and the equipmentto protect is more than 10 m.


Or if D1 + D2 + D3 > 50 cm.


(3) Protection L- : phase-earth, L-N: phase-neutral, N- : neutral-earth.







OVR

1.5 kV

MCB 40 A MCB 63 ACase Type 2 OVR 3N P TS, curve C, or curve C, or

2 (Class C) 65-275 P s P, s P TS (2) Fuse type gG Fuse type gG65 kA 40 A 63 A

NgMCB 32 A MCB 40 A

129415753-abb

Documents

single blocknetwork1n

neutral rightn1

single polemax

transient overvoltage

tn private home

tt private home

product selection

ovr selection guide