Lightning and Surge Arresters

Transcription

1 / Lightning and Surge Arresters Product overview /3 Introduction /6 Lightning arresters, requirement category I (B) /8 Combination arresters, requirement category I (B) and II (C) /0 Single-pole surge arresters, requirement category II (C) /3 Multipole surge arresters, requirement category II (C), /6 Surge arresters, requirement category III (D) /9 Accessories / Configuring aids 4 /

2 Product overview Lightning and Surge Arresters Overview Lightning arresters requirement category I (B) Combination arresters requirement category I (B) and II (C) Surge arresters requirement category II (C) Surge arresters requirement category III (D) Accessories /

3 Overview Introduction to lightning and overvoltage protection Lightning and overvoltage protection WHY? Powerful information systems form the backbone of our modern industrial society. A fault or the failure of these types of systems can have far-reaching consequences. These can even cause service and industry companies to go bankrupt. The cause of faults are many and electromagnetic influences play a major role. In a highly technical, electromagnetic environment, it is not advisable to simply wait for the mutual influencing of electrical and electronic devices and systems and then pay good money to eliminate the resulting problems. Rather it is essential to plan and take preventative measures that reduce the risk of influences, faults and destruction. In spite of all this, the damage and loss statistics of electronic insurance companies are extremely worrying: more than a quarter of all claims are as a result of overvoltages due to electromagnetic influencing (see diagram, "Causes of damage to electronics"). Other Elementary Negligence Overvoltages Lightning discharges and Switching operations Water Fire Theft Vandalism The causes of damage to electronics in 000, analysis of 8400 claims Causes of overvoltages Depending on their cause, overvoltages are divided into two categories: LEMP (Lightning ElectroMagnetic Pulse) overvoltages caused by atmospheric influences (e.g. direct lightning strikes, electromagnetic lightning fields). SEMP (Switching ElectroMagnetic Pulse) overvoltages caused by switching operations (e.g. disconnection of short-circuits, normal switching of loads). Overvoltages that are the result of thunderstorms are caused by direct/close-up or remote lightning strikes (see diagram on page /4). Direct or close-up strikes are lightning strikes to the lightning protection system of a building, its immediate proximity or to the electrical conductive systems of a building (e.g. l.v. power supply, TC and control lines). The resulting surge currents and voltages are a particular threat to the system to be protected due to their amplitude and power. In the case of direct or close-up lightning strikes, the overvoltages (see diagram on page /4) are caused by the voltage drop at the surge grounding resistance and the resulting increase in potential of the building, compared to the distant environment. This represents the greatest possible loading of an electrical plant in buildings. The characteristic parameters of the surge current (peak value, rate of current rise, charge content, specific energy) can be described using the surge current waveform 0/30 ms (see diagram examples for impulse test currents). These are defined in the international, European and national standards as test current for components and devices for protection in the event of direct strikes. In addition to the voltage drop at the surge grounding resistance, overvoltages also occur in electrical building installations and the connected systems and devices, due to the induction effect of the electromagnetic lightning field (see diagram on page /4: case b). The energy of these induced overvoltages and the resulting pulse currents is considerably less than that of a direct lightning impulse current and is therefore only described with surge current wave 8/0 ms (see diagram examples for impulse test currents). Lightning and Surge Arresters Introduction Components and devices that do not carry currents from direct lightning strikes are therefore checked using surge currents 8/0 ms. [ka] Test pulse current for lightning conductors Test pulse current for lightnung arresters Examples of impulse test currents [ s ] max [ka] Waveform [ s ] Q [As] W/R [J/ ] 7 0/30 37,, 0 6 8/0 0,7,7 0 3 The protection concept Remote strikes are lightning strikes at a greater distance from the objects to be protected, lightning strikes in the medium-voltage overhead system or the immediate proximity thereof, or lightning discharges from cloud to cloud (see diagram on page /4: cases a, b and c). At the same time as these induced overvoltages, the effects of remote strikes on the electrical system of a building are controlled through devices and components, the dimensions of which correspond to surge current wave 8/0 ms. The causes of overvoltages due to switching operations include the following: Switching off of inductive loads (e.g. transformers, reactors, motors), Ignition and interruption of electric arcs (e.g. arc-welding device), Tripping of fuses. The effects of switching operations in the electrical installation of a building are simulated for testing purposes with surge currents of waveform 8/0 ms. To ensure the continuous availability of complex power and information systems, even in the event of direct lightning strikes, further measures for overvoltage protection of electrical and electronic systems are required as well as a building lightning protection system. It is important to take all the causes of overvoltages into account. For this purpose, the lightning protection zone concept is used as described in IEC 63- (DIN VDE 08 Part 03) (see diagram on page /). The building is divided into zones of different danger levels. Using these zones, it is possible to determine the devices and components required for the lightning and overvoltage protection. An EMC-oriented lightning protection zone concept should also include external lightning protection (with air terminals, arresters, grounding), equipotential bonding, room insulation and overvoltage protection for power and information systems. For the definition of lightning protection zones, please use the specifications made in the table. I_ /3

4 Introduction Overview Definition of lightning protection zones Lightning protection zone Description 0 A Zone where objects are exposed to direct lightning strikes and must therefore carry the whole lightning current. The undamped electromagnetic field occurs in this case. 0 B Zone where objects are not exposed to direct lightning strikes but where the undamped electromagnetic field still occurs. Zone where objects are not exposed to direct lightning strikes and in which the currents are reduced compared to Zone 0 A. In this zone, the electromagnetic field may be damped, depending on the insulation measures implemented., 3 If a significant reduction in the conducted currents and/ or the electromagnetic field is required, subsequent zones must be set up. The demand on these zones must be geared towards the required environment zones of the system to be protected. In accordance with the demands and loads made on overvoltage protection devices with regard to their installation site, these are divided into lightning arresters, surge arresters and combination arresters. The highest demands with regard to discharge capacity are made on lightning current and combination arresters, which implement the transition from lightning protection zone 0 A to or 0 A to. These surge arresters must be able to carry lightning partial currents of waveform 0/30 ms several times and thus prevent these destructive currents from penetrating the electrical systems of a building. At the transition area of lightning protection zones 0 B to or at the downstream lightning arrester at the transition area of lightning protection zones to and higher, surge arresters are installed to protect against overvoltages. It is their task to further attenuate the remaining extent of the upstream protection level and restrict the overvoltages in the system, whether they are induced or self-generated. The lightning and overvoltage protective measures at the borders of the lightning protection zones apply in equal measure to the energy and information system. The holistic approach of the measures described in the EMC-oriented lightning protection zone concept means it is possible to achieve permanent plant availability of a modern infrastructure., EH A? J? I A K F I JH E A % &! = > Strike in outer lightning protection, Process framework (in industrial plants), Cables, etc. Voltage drop at surge grounding resistance R st Induced voltage in loops! - 8 = >? 4 A JA I JH E A = Strike in mediumvoltage overhead lines Overvoltage transformer waves on overhead lines, as a result of cloud-cloud lightning strikes 6 I O I JA = 4 I J > M A H I O I JA >? Fields of lightning channel Causes for overvoltages during lightning discharges /4

5 Overview Introduction - ) I_33 3 * M A H A C E A A H E C I O I JA 6 I O I JA 8 A JE= JE * * - EMC-oriented lightning protection zone concept 4 E I K = JE! A H E = EC D J E C F H JA? JE A G K EF JA JE= E C EC D J E K? J H? = A G K EF JA JE= E C K HC A = HHA I JA H /

6 Lightning arresters, requirement category I (B) Overview Supports inclusion of power lines in the lightning protection equipotential bonding For protection of low-voltage load systems against overvoltage, even in the case of direct lightning strikes Max. permissible operational voltage V AC, 0/60 Hz Lightning impulse current test, wave-shaped 0/30 ms The enclosed version can prevent ion emissions, as opposed to self-extinguishing measuring spark gaps: this facilitates the mounting of wiring next to other devices in the system. Supports energy coordination with surge arresters of requirement category II. 8 mm mounting depth Technical specifications Lightning arresters -pole 3-pole -pole Order No. SD7 3-0 SD7 3- SD SD7 38- SD7 33- SD7 3-0 Reference to national regulations SPD class I acc. to Surge arrester requirement category B acc. to SPD type acc. to Approval and marks Requirement category Rated voltage U c (max. permissible V AC operational voltage) IEC 6643-: 998-0; E DIN VDE 067-6: 989-, -6/A: and -6/A: 996-0; EN 6643: 00- U, KEMA, VDE Class I (B) /0 Hz Rated voltage U n V AC 30/0 Hz 400/0 Hz 30/0 Hz Discharge of follow current I f ka rms at voltage U c A rms 3 00 Discharge capacity Lightning impulse current -pole ka (0/30 ms) I imp Lightning impulse current 3-pole ka (0/30 ms) I imp Protection level at U p Lightning operating current monitoring./0 kv ˆ 3. ˆ 4 Response time t A ns ˆ 00 Max. back-up protection, if not already provided by the network Short-circuit strength at max. back-up protection Min. conductor cross-section A 0 gl/gg 60 gl/gg 60 gl/gg ka 0 0 mm 0 solid/finely stranded Max. conductor cross-section mm 0 stranded, 3 finely stranded Temperature range C Degree of protection IP0 Installation 3 mm standard mounting rail acc. to EN 00 Mounting dimensions acc. to DIN MW 4 3 gl/gg /6

7 Selection and ordering data Lightning arresters SD7 38- Dimensional drawings Lightning arresters -pole SD7 3-0 SD7 3- SD7 3-0 SD SD7 38-! $ 9 3-pole SD7 33- $ %! "! # # & Lightning arresters, -pole Lightning and Surge Arresters More information Lightning arresters, requirement category I (B) Discharge capacity MW Order No. Weight PS*/ item P. unit kg Items unenclosed 7 ka SD N-PE unenclosed 00 ka SD enclosed 0 ka SD N-PE enclosed 00 ka SD Lightning arresters, 3-pole enclosed 00 ka 4 SD Lightning arrester with increased follow current discharge capacity, -pole safe disconnection of line-follow currents up to 0 ka eff without back-up fuse unenclosed 0 ka SD Accessories for SD7 3-0, SD and SD7 3-0 to ensure the required mounting dimensions: 8HP molded-plastic distribution system in box sizes and, see catalog LV 30. ) % $ # = " # ' * M K JH= C A = E J= E I = BA EI J=? A B # J E I K = F = HJI # # # # Recommended safety clearance for the installation of surge arresters in the switchgear cabinet. These setup instructions only apply to the unenclosed version (SD7 3-0 and SD7 38-0). % # #! > I_ ,7 43, (= 4 MW) 8 * You can order this quantity or a multiple thereof. /7

8 Combination arresters, requirement category I (B) and II (C) Overview Combination arresters are surge arresters that meet the basic requirement of requirement category I and II, i.e.: - have a lightning stroke current discharge capacity of 7 ka/00 ka (0/30 ms) - can be energy-coordinated with surge arresters of Class II and III, as well as directly with data terminal equipment of overvoltage category l (U n = 30 V AC) Protection level <. kv, corresponding to withstand impulse voltage of overvoltage category I Compact unit for all three-phase systems which is ready for connection Connection system: double terminal design supports "V wiring" option Multifunction terminal in the outgoing circuit Visual operational voltage display Remote signaling using separate, overvoltage-protected display and remote signaling module Overvoltage and atmospheric lightning arrester in a single device Perfect "all in one" solution Cabled complete device for any distribution system (TT, TN-C and TN-S) Easy-to-use device selection thanks to simple description Up to 70 % more space saving than conventional solutions Simple installation on standard mounting rail 8 mm mounting depth Technical specifications Combination arrester TN-C TN-S TT P TT Order No. SD SD SD SD7 34- Reference to national regulations SPD class I acc. to Surge arrester requirement category B acc. to SPD type acc. to Approval and marks Requirement category IEC 6643-: 998-0; E DIN VDE 067-6: 989-, -6/A: and -6/A: 996-0; EN 6643: 00- VDE Class I (B) Rated voltage U c (max. permissible operational voltage) V AC /0 Hz Rated voltage U n V AC 400/0 Hz Discharge of follow current I f ka rms 0 at voltage U c Discharge capacity Lightning impulse current -pole (0/30 ms) I imp ka Lightning impulse current, multipole (0/30 ms) I imp ka Protection level U p at I n Residual voltage at I imp kv ˆ. monitoring./0 Lightning operating current kv ˆ. Response time t A ns ˆ 00 Max. back-up protection, if not already provided by the network Short-circuit strength at max. back-up protection A ka 3 A gl/gg with spur terminal A gl/gg with V terminal /0 Hz Min. conductor cross-section mm 0 solid/finely stranded Max. conductor cross-section mm 3 stranded, 3 finely stranded (L, N, PEN ) mm 0 stranded, 3 finely stranded (L, N, PEN) Temperature range C Degree of protection IP0 Installation 3 mm standard mounting rail acc. to EN 00 Mounting dimensions acc. to DIN MW Operating display for L, L, L 3 Remote display yes, over remote signaling module SD SD Design Remote signaling module Order No. SD SD Remote signaling module for combination arresters SD , SD and SD SD7 34- Connection of the module connection only with the provided terminals of the combination arrester Contact type floating changeover Switching capacity U n /I n V AC V DC 0/0. A 0/0. A; /0. A; 7/0. A Power consumption MW Wavelength of the FOC diode Nm 660 Min. conductor cross-section mm 0. solid/finely stranded Max. conductor cross-section mm 4 solid/finely stranded Temperature range C Degree of protection IP0 Installation 3 mm standard mounting rail acc. to EN 00 Mounting dimensions acc. to DIN MW. /8

9 Selection and ordering data Combination arresters SD SD Dimensional drawings Combination arresters SD Lightning and Surge Arresters Remote signaling modules SD SD Combination arresters, requirement category I (B) and II (C) MW Order No. Weight PS*/ item P. unit kg Items TN-C 6 SD TN-S 8 SD TT 8 SD P TT 8 SD For technical specifications see page /8 Remote signaling modules The remote signaling module is placed on left-hand side of combination arrester and linked to the existing connecting cables. contact: changeover 0 V AC, 0. A 0 V DC, 0. A V DC, 0. A 7 V DC, 0. A contact /: operating status /4: fault scenario for SD , SD and SD combination arrester with 4 connecting cables. SD for SD7 34- combination arrester with connecting cables. SD For technical specifications see page /8. 30 I_0839 I_0844a SD7 34- SD SD ,7 43, (= 6 MW) 8 7 (=, MW) 6,7 43, 8 3! & " " # ' " " & 9 $ % "! # # & * You can order this quantity or a multiple thereof. /9

10 Single-pole surge arresters, Requirement category II (C) Overview For the protection of low-voltage load system against overvoltage High discharge capacity through powerful zinc oxide varistors/ spark gaps (N-PE surge arresters) High monitoring reliability through isolating arrester disconnector, type "Thermo Dynamic Control" with double monitoring Fault indication through red marking in inspection window Multifunction terminals for conductor and busbar connection Simple replacement of surge arrester connectors Simple mounting on standard mounting rail with busbars Design as for multipole version Same connector as for multipole version No interaction limiting phase reactor with surge arresters Class III (formerly D) Technical specifications Order No. SD SD7 30- SD7 30- SD SD SD SD Reference to national regulations SPD class II acc. to Surge arrester requirement category C acc. to SPD type acc. to Approval and marks Requirement category Rated voltage U c (max. permissible operational voltage) IEC 6643-: 998-0; E DIN VDE 067-6: 989-, -6/A: and -6/A: 996/0; EN 6643: 00- U, KEMA, VDE Class II (C) 7 V AC/0 Hz, 30 V DC 33 V AC/ 0 Hz, 40 V DC 7 V AC/ 0 Hz, 30 V DC 33 V AC/ 0 Hz, 40 V DC Discharge of follow current I f A rms 00 at voltage U c Discharge capacity Lightning impulse current -pole (0/30 ms) I imp ka Rated discharge current (8/0 ms) I sn ka Increased discharge current (8/0 ms) I snmax ka 40 Protection level U p Lightning operating current monitoring./0 kv ˆ. Residual voltage at ka (8/0 ms) kv ˆ ˆ. ˆ ˆ. Residual voltage at I sn kv ˆ. Response time t A ns ˆ ˆ 00 Max. back-up protection, if not already provided by the network Short-circuit strength at max. back-up protection A gl/gg ka 0/0 Hz /0 Hz 0/0 Hz /0 Hz Min. conductor cross-section mm. solid/finely stranded Max. conductor cross-section mm 3 stranded, finely stranded Temperature range C Degree of protection IP0 Installation 3 mm standard mounting rail acc. to EN 00 Mounting dimensions acc. to DIN MW Optical function/fault indication yes no Remote display no yes no yes no Floating changeover contact no yes no yes no Switching capacity U n /I n AC: 0 V/0. A DC: 0 V / 0. A; V / 0. A; 7 V/0. Hz AC: 0 V/0. A DC: 0 V / 0. A; V / 0. A; 7 V/0. Hz V AC/ 0 Hz /0

11 Technical specifications Selection and ordering data Lightning and Surge Arresters Order No. SD SD Reference to national regulations SPD class II acc. to surge arrester requirement category C acc. to SPD type acc. to Approval and marks Requirement category Rated voltage U c (max. permissible operational voltage) Discharge capacity Rated discharge current (8/0 ms) I sn ka Increased discharge current (8/0 ms) I snmax ka 40 Protection level U p Residual voltage at ka (8/0 ms) kv ˆ. Residual voltage at I sn kv ˆ Response time t A ns ˆ Max. back-up protection, if not already provided by the network Short-circuit strength at max. back-up protection IEC 6643-: 998-0; E DIN VDE 067-6: 989-, -6/A: and -6/A: 996/0; EN U, KEMA, VDE Class II (C) 38 V AC/0 Hz 00 V DC A gl/gg ka /0 Hz Single-pole surge arresters, Requirement category II (C) Min. conductor cross-section mm. solid/finely stranded Max. conductor cross-section mm 3 stranded, finely stranded Temperature range C Degree of protection IP0 Installation 3 mm standard mounting rail acc. to EN 00 Mounting dimensions acc. to DIN MW Optical function/fault indication yes Remote display no yes Floating changeover contact no yes Switching capacity U n /I n AC: 0 V/0. A DC: 0 V / 0. A; V / 0. A; 7 V/0. Hz MW Order No. Weight PS*/ item P. unit kg Items Surge arresters, -pole acc. to E DIN VDE 067, Part 6/.89 and Part 6/A/03.96 and Part 6/A/0.96 Surge arresters High monitoring reliability through isolating arrester disconnector, type "Thermo Dynamic Control" with double monitoring function Fault indication by red marking in the inspection window Multifunction terminal for conductor and busbar connection -pole Surge arrester rated voltage U c = 7 V SD Surge arrester rated voltage U c = 38 V SD Surge arrester with remote indication ) Same design as SD7 300-, but with additional 3-pole terminal for connection of remote indication When the monitoring device responds (disconnection of the defective arrester from the line supply as a result of overload) the remote signaling connections are switched via a floating changeover contact pole Surge arrester rated voltage U c = 7 V SD ) The devices can be coupled to instabus KNX EIB and AS-i bus or PROFIBUS through potential-free changeover contacts. * You can order this quantity or a multiple thereof. /

12 Single-pole surge arresters, Requirement category II (C) Selection and ordering data Surge arresters, -pole, plug-in Plug-in surge arresters MW Order No. Weight PS*/ item P. unit kg Items Same design as SD7 300-, but -piece, comprising basic element and plugged protective block -pole Surge arrester rated voltage U c = 7 V SD Surge arrester rated voltage U c = 33 V SD SD7 30- SD Plug-in surge arresters with remote indication ) Same design as SD7 30-, but with additional 3-pole terminal for connection of remote indication When the monitoring device responds (disconnection of the defective arrester from the line supply as a result of overload) the remote signaling connections are switched via a floating changeover contact. Surge arrester rated voltage U c = 7 V SD Surge arrester rated voltage U c = 33 V SD Surge arrester rated voltage U c = 38 V SD N-PE surge arrester for 3+ circuitry in the TT network Specially for use in TT system in "3+ circuit" according to DIN V VDE V : between neutral wire N and PE conductor PE/equipotential bonding with lightning impulse current (0/30 ms) ka Surge arrester on the basis of spark gaps Multifunction terminal for conductor and busbar connection Surge arrester rated voltage U c = 7 V SD For technical specifications see page /0. ) The devices can be coupled to instabus KNX EIB and AS-i bus or PROFIBUS through potential-free changeover contacts. E F K J % $ $ = E I J= > K I : - * Dimensional drawings SD7 300-, SD SD7 30- SD7 30-, SD SD7 303-, SD , SD SD I_ ,7 (= MW) Remote indication 43, 64 / * You can order this quantity or a multiple thereof.

13 Overview Same design as surge arrester, but with additional 3-pole terminal for connecting remote indication. When the monitoring device responds (disconnection of the defective arrester from the line supply as a result of overload), the remote signaling terminals are switched by means of a floating changeover contact. Easy installation of the remote indication due to the plug-in terminal. Designs: TN-C, plug-in TN-C, plug-in with remote indication TN-S, plug-in TN-S, plug-in with remote indication TT plug-in TT plug-in with remote indication All device models are available for surge arrester rated voltages of 7 V, 33 V and 38 V (see page /4). Accessories: connectors Models suitable for multipole surge arresters TN-C/TN-S/TT and single-pole surge arresters. Technical specifications Lightning and Surge Arresters Multipole surge arresters, requirement category II (C) The pluggable protective block can be replaced with no need to disconnect the supply voltage or remove the cover plate of the distribution board. Benefits Pre-wired complete units for conventional system types (TN-C, TN-S, TT), comprising a basic part and plug-in protective blocks High discharge capacity through powerful zinc oxide varistors or spark gaps for TT surge arresters High monitoring reliability through isolating arrester disconnector, type "Thermo Dynamic Control" with double monitoring Fault indication by red marking in the inspection window Multifunction terminals for conductor and busbar connection Simple replacement of surge arrester connectors Up to 70 % more space saving than conventional solutions Simple mounting on standard mounting rail with busbars Design as for -pole version No interaction limiting phase reactor with surge arresters Class III (corresp. to D) Same male connectors as for -pole version Multipole lightning arrester without remote indication with remote indication TN-C TN-S TT TN-C TN-S TT Order No. SD7 33- SD7 3- SD7 37- SD7 34- SD7 36- SD7 38- L-N N-PE L-N N-PE Reference to national regulations SPD class II acc. to IEC 6643-: 998; Surge arrester requirement category C acc. to E DIN VDE 067-6: 989-, -6/A: and -6/A: 996-0; SPD type acc. to EN Requirement category Class II (C) Rated arrester voltage U c V AC 7/0 Hz /0 Hz 7/0 Hz /0 Hz (max. permissible operating voltage) Rated voltage U n V AC 30/400/0 Hz Discharge of follow current I f A at voltage U c Discharge capacity Rated discharge current (8/0 ms) I sn ka 0 Increased discharge current (8/0 ms) I snmax ka Protection level U p Residual voltage at ka (8/0 ms) kv ˆ ˆ Residual voltage at I sn kv ˆ. ˆ. Response time t A ns ˆ ˆ 00 ˆ ˆ 00 Max. back-up protection, if not already provided by the network Short-circuit strength at max. back-up protection A gl/gg gl/gg ka 0/0 Hz 0/0 Hz Min. conductor cross-section mm. solid/finely stranded Max. conductor cross-section mm 3 stranded, finely stranded Temperature range C Degree of protection IP0 Installation 3 mm standard mounting rail acc. to EN 00 Mounting dimensions acc. to DIN MW Optical function/fault indication yes no Remote display no yes Floating changeover contact no yes Switching capacity U n /I n AC: 0 V/0. A DC: 0 V / 0. A; V / 0. A; 7 V/0. Hz /3

14 Multipole surge arresters, requirement category II (C) Technical specifications Multipole surge arresters without remote indication with remote indication TN-C TN-S TT TN-C TN-S TT Order No. SD SD7 3-4 SD SD SD SD L-N N-PE L-N N-PE Rated arrester voltage U c V AC 33/0 Hz /0 Hz 33/0 Hz /0 Hz (max. permissible operating voltage) Discharge capacity Rated discharge current (8/0 ms) I sn ka 0 0 Protection level U p Residual voltage at ka (8/0 ms) kv ˆ. ˆ. Residual voltage at I sn kv ˆ. ˆ. Short-circuit strength at max. back-up protection ka /0 Hz /0 Hz Multipole surge arresters without remote indication with remote indication TN-C TN-S TT TN-C TN-S TT Order No. SD7 33- SD7 3- SD7 37- SD7 34- SD7 36- SD7 38- L-N N-PE L-N N-PE Rated arrester voltage U c V AC 38/0 Hz /0 Hz 38/0 Hz /0 Hz (max. permissible operating voltage) Discharge capacity Rated discharge current (8/0 ms) I sn ka 0 0 Protection level U p Residual voltage at ka (8/0 ms) kv ˆ. ˆ. Residual voltage at I sn kv ˆ ˆ Short-circuit strength at max. back-up protection ka /0 Hz /0 Hz Selection and ordering data Surge arresters, multipole, plug-in SD7 37- Surge arrester rated voltage MW Order No. Weight PS*/ item P. unit U c kg Items TN-C 7 V 3 SD V 3 SD V 3 SD TN-C with remote indication 7 V 3 SD V 3 SD V 3 SD TN-S 7 V 4 SD V 4 SD V 4 SD TN-S with remote indication 7 V 4 SD V 4 SD V 4 SD TT 7 V 4 SD V 4 SD V 4 SD TT with remote indication 7 V 4 SD V 4 SD V 4 SD SD7 38- /4 * You can order this quantity or a multiple thereof.

15 Dimensional drawings SD7 33-, SD7 33-4, SD7 33- SD7 34-, SD7 34-4, SD I_63 Lightning and Surge Arresters SD7 3-, SD7 3-4, SD7 3- SD7 36-, SD7 36-4, SD7 36- SD7 37-, SD7 37-4, SD7 37- SD7 38-, SD7 38-4, SD Multipole surge arresters, requirement category II (C) I_ ,7 (= 3 MW) Remote indication , 64 7 (= 4 MW) Remote indication 6,7 43, /

16 Surge arresters, requirement category III (D) Technical specifications Design Protective adapter, protective adapter with line filter Order No. SD7 33-0, SD7 33- Tested acc. to E DIN VDE 067 Part 6/: 89- Requirement category Rated arrester voltage U c (max. permissible operating voltage) III (D) Surge arresters -pole 4-pole Overvoltage safety socket outlet SD SD UB..., UH... E DIN VDE 067, Part 6: 89-, Part 6/A: 96-03, EN 6643-: 00; IEC 6643-: E DIN VDE 067, Part 6: 89-, Part 6/A: and Part 6/A: 96-0 V AC /0 Hz V DC 440/0 Hz 30/0 Hz Rated voltage U n V AC 30/0 Hz 30/0 Hz 00/0 Hz 400/0 Hz Max. power requirements of load 90 W (4 A) W (6 A) Rated current A 6 Rated discharge current (8/0 ms) I sn in ka ka. L(N) PE, L N L+N PE Combined surge kv L(N) PE, L N L+N PE 3 L(N) PE, 3 L N L+N PE 6 L(N) PE 6 L N 0 L+N PE Protection level U p kv. ˆ. L N ˆ. L(N) PE Response time t A ns L N 00 L(N) PE Max. back-up protection, if not already provided by the network ˆ L N ˆ 00 L(N) PE A 4 (only for SD7 33-0) 6 gl/gg or LS C6 3 L L 3 L N N PE 6 L L 6 L N 0 N PE ˆ. L N ˆ. L(N) PE ˆ. L L 3 L(N) PE, L N L+N PE ˆ./ˆ. Min. conductor cross-section mm 0 solid/finely stranded 0. solid/finely stranded 0.7 Max. conductor cross-section. 4 solid/finely stranded. Temperature range C Degree of protection IP0 Installation 3 mm standard mounting rail acc. to EN 00 flush mounting Mounting dimensions acc. to DIN MW. 3 Optical function/fault indication Remote display Contact type NC Switching capacity U n /I n AC: 0 V/0. A DC: 0 V / 0. A; V / 0. A; 7 V/0. Hz /6

17 Benefits For the protection of electronic device against overvoltages (overvoltage category II according to DIN VDE 00-:997-04) Surge arrester of requirement category D according to E DIN VDE 067, Part 6/.89 and 6/A: Selection and ordering data Lightning and Surge Arresters Surge arresters, requirement category III (D) SPD Type 3 according to EN 6643-: 00 SPD class III according to IEC 6643-: 998- Visual function indication (green) Visual fault indication (red) 8 mm mounting depth 3 Surge arresters Complies with E DIN VDE 067, Part 6: 989- and -6/A: Surge arrester, -pole -pole overvoltage protection with monitoring equipment and isolating arrester disconnector Floating remote indication contact (NC contact) for fault indication (no system shutdown) Rated voltage U N = 30 V Surge arrester rated voltage U c = V Surge arrester, 4-pole 4-pole overvoltage protection with monitoring equipment and isolating arrester disconnector Optical function indication for 3 outer conductors (glow lamp green) Floating remote indication contact (NC contact) for fault indication (no system shutdown) Rated voltage U N = 30 V/400 V Surge arrester rated voltage U c = V/440 V MW Order No. Weight PS*/ item P. unit kg Items. SD SD Surge arresters (socket outlet devices) Complies with E DIN VDE 067, Part 6: 989- and -6/A: Siemens socket outlet with overvoltage protection UB.../UH... ) with labeling field and function indicators for the DELTA switch-socket outlet range Protective adapter, socket outlet adapter to protect electronic devices Can be plugged into socket outlets With optical function indication/monitoring Rated current: 6 A Rated voltage: 30 V/0 Hz Nominal discharge current. ka Protective adapter with line filter like SD protective adapter, but with additional line filter against high-frequency noise voltages Rated current: 4 A SD SD For technical specifications see page /6. ) For prices and additional information, see the ET D catalog, "DELTA switches and outlets". * You can order this quantity or a multiple thereof. /7

18 Surge arresters, requirement category III (D) Dimensional drawings SD SD , I_07 N L L L N L L L3 7 (=, MW) 4 (= 3 MW) 6,7 43, 8 Circuit diagrams Surge arresters requirement category III (D) SD $ ) SD $ )! - - A? JH A L E? A! - A? JH A L E? A! " % # % #!! UB... UH... SD SD7 33- > A HI F = K C I I? D K J - % # " #! " = /8

19 Technical specifications Lightning and Surge Arresters Accessories Design Decoupling reactors Through-type terminal Order No. SD SD SD Tested acc. to E DIN VDE 067, Part 6: 989-, Part 6/A: and Part 6/A: Rated arrester voltage U c V AC /0 Hz (max. permissible operating voltage) Nominal voltage V AC 00/0 Hz Rated current A Rated inductance mh ±0 % ±0 % Direct current resistance R cu MW approx. 4 approx. Max. back-up protection, if not already provided by the network Selection and ordering data A 3 gl/gg 63 gl/gg 00 gl/gg 0 gl/gg Short-circuit strength at max. back-up protection ka 0/0 Hz Min. conductor cross-section mm. solid/finely stranded 0 solid/finely stranded. solid/finely stranded Max. conductor cross-section mm 3 stranded/ finely stranded Temperature range C Degree of protection IP0 0 stranded/ 3 finely stranded Installation 3 mm standard mounting rail acc. to EN 00 Mounting dimensions acc. to DIN MW 4 3 stranded/ finely stranded MW Order No. Weight PS*/ item P. unit kg Items Through-type terminal For simple wiring in the different circuit versions (see section, "Configuring aid") -pole SD Male connector for surge arresters Male connectors can be used for both single-pole and multipole surge arresters Male connector for L-N surge arrester Surge arrester rated voltage U C = 7 V SD Male connector for L-N surge arrester Surge arrester rated voltage U C = 33 V SD SD7 39- Male connector for L-N surge arrester Surge arrester rated voltage U C = 38 V SD Busbars Male connector for N-PE surge arrester (TT system) SD Busbar for lightning arrester 8-pole, -phase SD Busbar for surge arrester 4-pole, -phase SD Busbar for combination arrester TN-S/TT and 4-pole residual current protective devices (SM and SM3) SD Busbar for combination arrester TN-S/TT and 4-pole miniature circuit-breaker (SY) SD Busbar for combination arrester TN-C and 3-pole residual current protective devices (SM and SD SM3) Busbar for combination arrester TN-C and 3-pole miniature circuit-breaker (SY) SD Busbar for multipole surge arrester TN-S/TT and 4-pole miniature circuit-breaker (SY) SD Busbar for multipole surge arrester TN-C and 3-pole miniature circuit-breaker (SY) SD * You can order this quantity or a multiple thereof. /9

20 Accessories Selection and ordering data SD Decoupling reactors For the energetic coordination of lightning and surge arresters in the event of a lightning impulse current of 0/30 ms The concentrated inductance replaces the otherwise necessary cable length for decoupling lightning and surge arrester 8 mm mounting depth Rated voltage: 00 V, 0 Hz Hz Inductance: H 0 % MW Order No. Weight PS*/ item P. unit kg Items Rated current: 3 A SD Rated current: 63 A 4 SD Dimensional drawings Through-type terminal -pole SD Decoupling reactors SD SD AI_ I_0766b (= MW) 6,7 43, 8 36 (= MW) 7 (= 4 MW) 6,7 43, 8 /0 * You can order this quantity or a multiple thereof.

21 Overview Requirement categories of surge arresters (SPDs) Lightning current and overvoltage protection is only effective if the prescribed insulation resistance of system sections are taken into account. To do this, the impulse withstand voltage of the different overvoltage categories is coordinated with the protection level U p of the different SPDs. 30/400 V 6 kv IV SE Protection level Rated surge withstand capability and overvoltage class acc. to DIN VDE 00 Part M 4 kv III. kv II The international standard IEC (EN ) distinguishes between four impulse withstand voltage categories for l.v. devices. In particular, the following categories apply to l.v. systems with a nominal line voltage of 30/400 V. Coordinated use of lightning current and surge arresters Cable entry. kv I B C D none <4 kv <. kv <.3 kv Requirement category acc. to E DIN 067 Part 6/A kwh Electric meter I_0800b Decoupling reactor Lightning and Surge Arresters Lightning and Surge Arresters Configuring aids Impulse withstand voltage categories Category Impulse Description withstand voltage IV 6 kv for devices that are upstream of the distribution board III 4 kv for devices that are part of the fixed system (e.g. distribution boards) II. kv for normal impulse withstand voltage devices (e.g. household appliances) I. kv for very sensitive devices (e.g. electronic devices) The adjacent circuit diagram and the above table show that lightning current and surge arresters are divided into requirement categories, depending on their location in the electrical system. German draft standard VDE International standard IEC European standard EN Designation Class B Class I Type Lightning arresters Class C Class II Type Surge arresters for distribution Class D Class III Type 3 Surge arresters for terminal device Siemens SPDs correspond to the following product standards: Germany (VDE 067-6, 996), International (IEC 6643-, 998), Italy (CEI EN 6643-), Austria ÖVE/ÖNORM E 800. I_ Lightning arrester Surge voltage protector Surge voltage protector n In practical use, surge arresters of different requirement categories are more or less connected in parallel. Due to their different response characteristics, discharge capacities and protective tasks, the different types of arrester must be installed in the system such that the ratings of the individual devices are not exceeded, thus ensuring system-wide protection. This requires energy considerations to ensure that a surge current always switches to the surge arrester connected next in series if there is a risk of the relevant surge arrester being overloaded by the surge current. This is called "energy coordination". It must be established between surge arresters of Class I (B) and II (C) and between surge arresters of Class II and III (D). In the latter case, the energy coordination is already present if there is a cable between the surge arrester of Class II and the surge arrester of Class III that is m long. The coordination of SPDs of Class I and II is described in the following section. In the event of lightning strikes, the surge arresters of the requirement category II (C) will respond first due to the low protection level. These surge arresters have a protection level of <. kv. This voltage value is not sufficient to make the parallel-connected series gap of the lightning arrester Class I respond, as their response value is approx. 3. kv. In order not to overload the Class II surge arresters, an additional voltage drop of approx. kv must be generated on the line between B and C surge arresters which, together with the protection level of the surge arrester, reaches the response value of the series gap of the lightning arrester. The voltage drop is achieved in the power systems using the existing cable impedances or the concentrated inductances, the so-called decoupling reactors. The line inductance depends on the cable routing of the PE conductor. If it is routed in a shared cable with L, L, L3 and N, a cable length of at least m is required in order to achieve sufficient inductance and the respective voltage drop. If the PE conductor runs separately from the other lines, at a distance of m or more, a cable length of m is sufficient. If these cable lengths are not possible, then additional decoupling reactors (SD / - ) must be installed between the Class I and Class II arresters. 3 /

22 Configuring aids Overview Lightning arrester L L L3 N Surge arrester Minimum cable lengths: > _ m if PE conductor is not integrated in cable > _ m if PE conductor is integrated in cable l Or: application of a decoupling reactor I_08099b A Follow current discharge capacity The specification of the follow current discharge capability of lightning arresters identifies the level of the max. follow current that the surge arrester can still interrupt on its own without requiring the help of an upstream protective device, such as a fuse or a miniature circuit-breaker. The follow current is caused by a transient short-circuit generated by the lightning arrester when discharging the lightning current as required. The follow current is therefore a short-circuit current and has a frequency of 0 Hz. If the max. possible short-circuit current of the system is smaller than the max. follow current that can be discharged by the SPD, no upstream protective device is required. Otherwise, a fuse or miniature circuit-breaker must be installed. The following sections provide data on the size of the protective device required. The single-pole SD7 3-0 lightning arrester and the SD , SD and SD combination arresters have a follow current discharge capability of 0 ka. I_0788 I_0789 Mounting diagram Circuit diagram F F Decoupling reactor F M Decoupling reactor S P D S P D Lightning arrester Surge arrester Lightning arrester Surge arrester I_08098a Energy coordination of lightning and surge arresters Line formation/ ground connection Line distribution Installation of decoupling reactor necessary if L - L - L3 - N L - L - L3 - N l < m PE installed in separate line PE L - L - L3 - N PE installed in same line I_0900 L - L - L3 - N - PE I_090 l < m The energy coordination of surge arresters of requirement category II and surge arresters of requirement category III is ensured by a cable length of at least m. The energy coordination of combination arresters and surge arresters of Class II is ensured without decoupling reactors. l is the cable length installed between the main switchgear cabinet and the auxiliary switchgear cabinet or between several auxiliary switchgear cabinets. If the length exceeds l 30 m, we recommend that you use a second protection level, in which further surge arresters of requirement category II are installed in the input switchgear cabinet. /

23 Overview Coordination of SPDs with miniature circuit-breakers and fuses The coordination between an SPD and overcurrent protective devices aims to: Protect the SPD against overload through overcurrent, Ensure plant availability, Help discharge line-follow currents, if necessary. The coordination between SPDs and fuses/miniature circuitbreakers should ensure that the: max. permissible peak current I p max and max. permissible energy value I t max of the SPD is not exceeded. This prevents damage to the SPDs and thus, exposure of persons/materials to safety hazards. Description Requirement category Product designation Max. permissible energy value I t max Combination arrester I and II SD , SD , SD pole surge arrester for high potential Lightning and Surge Arresters Configuring aids Basically, there are types of connection schemes: The protective device is in the connecting cable of the SPD. If the circuit-breaker or the fuse blows, this ensures that the power supply is maintained. We recommend the use of a signaling device to signal that the overvoltage protective function has disconnected from the system and is therefore no longer effective. The protection is carried out by the protective device (e.g. house connection fuse), which is located in the power distribution system as standard. In this case, the SPD is protected by the system fuse located in the network. When this fuse blows due to an SPD overload, the system is disconnected from the network. The fuse or miniature circuit-breaker to be used must be dimensioned to suit the conductor cross-sections in the installation. Always take into account the max. permissible number of back-up fuses for the arrester. Max. permissible peak current i p max Comments 600 ka s 8 ka No protection necessary up to 0 ka short-circuit current I SD ka s 8 ka No protection necessary up to 0 ka short-circuit current Enclosed surge arrester I SD7 3-, SD ka s 0 ka Unenclosed surge arrester I SD ka s 3 ka Surge arresters II SD7 300-, SD7 30-, SD7 30-, SD7 303-, SD7 33-, SD7 3-, SD7 37-, SD7 34-, SD ka s 0 ka /3

24 Configuring aids Overview Flow diagram for the coordination of SPD and overvoltage protection The system distribution is implemented according to system standards with switches and fuses. Where required, the lightning/surge arrester should ensure overvoltage protection through fuses or magneto-thermal switches. The planner can use the plant protection located upstream of the SPD or provide a series connection for the surge arrester. The following flow diagram describes the method of procedure when choosing between fuse and switch as overvoltage protection: when using a fuse (recommended), you can refer directly to the tables on pages / and /6, without using the flow diagram. ) + D = H=? JA HEI JE? I B E E= JK HA? EH? K EJ> HA = A H)?? A BB *, A JA H E A I D HJ? EH? K EJA BBA? JEL A? K HHA J?? A BB,, A JA H E A E = N E K L = K A = BF H JA? JEL A L E? A ) ) * H JA? JEL A L E? A B HJD A I O I JA H JA? JEL A L E? A B HJD A, * HA = E C? K HHA J?? A BB F! F = N ; A I! = N H JA? JE * A? A I I = HO B EJE = = HHA I JA HBK I A HA G K M EJ? D I A A? JE * M EJD L A HO D EC D I A A? JEL EJO I JD = J F! F = N! = N * =? K F BK I A M EJ? D H * =? K F BK I A I M EJ? D * =? K F BK I A I A A? JE * M EJD L A HO D EC D I A A? JEL EJO 6 = A E J =?? K J = N > =? K F BK I A 6 = A E J =?? K JI A A? JEL EJO > A JM A A? EH? K EJ> HA = A BK I A ), K JE, F H JA? > O I M EJ? D *, F H JA? > O > =? K F BK I A. * ), * K JE! ),. * K JE ) If the SPD needs to be replaced, an assigned cross-section element enables fast recovery of line operation once the SPD is replaced. ) Recommended, because fuses have a lower voltage drop and ensure better protection. 3) For values, see table on page /3. /4

25 Overview System protected by miniature circuit-breakers The following tables show the conditions under which it is necessary to protect the max. current, as well as the max. rated current of the fuse suitable for the SPD. MCB upstream ) The SD7 3-0 surge arrester does not require a safety fuse up to 0 ka. F Safety fuse Lq Conductor cross-section of system Lq Arrester cross-section to surge arrester Lq3 Conductor cross-section with ground fault Surge arresters SD7 3-0 ) SD7 33-, SD7 3- Lq Lq Lq3 Fuse F Fuse F [gl/gg] [A] [mm ] [mm ] [mm ] [gl/gg] [A] / / / / / / / up to 63 / up to / up to / up to / up to / up to / up to 60 0 / 3 3 / up to 60 > 0 / 3 3 / up to 60 MCB Lq F S P D I_0790 Lq Lq3 Lightning and Surge Arresters Configuring aids We recommend using fuses instead of magneto-thermal switches as they have a lower voltage drop and ensure better protection U prot. -pole and multipole surge arresters SD7 300-, SD7 30-, SD7 30-, SD7 30-4, SD7 303-, SD , SD7 303-, SD , SD7 33-, SD7 34-, SD7 3-, SD7 36-, SD7 37-, SD7 38- MCB upstream Lq Lq Lq3 Fuse F [gl/gg] [A] [mm ] [mm ] [mm ] [A] / / / / / 63 up to 80 3 up to 00 0 up to 0 up to 60 9 up to 00 0 up to 0 / up to > 0 / up to MCB Lq S P D Lq3 Lq I_ Combination arrester SD , SD7 343-, SD Feed-through connection Arrester connection ) MCB upstream Lq = Lq Lq3 MCB upstream ) Follow current discharge capacity 0 ka. / = No arrester protection necessary Lq Lq Lq3 Fuse F [gl/gg] [mm ] [mm ] [gl/gg] [mm ] [mm ] [mm ] [gl/gg] / / 3 0 6* / / / / / / / / 0 / 3 / > 0 / 3 / 3 /

26 Configuring aids Overview Fuse-protected system Fuse upstream Surge arresters SD7 3-0 ) SD7 3-, SD7 33- Lq Lq Lq3 Fuse F Fuse F [gl/gg] [A] [mm ] [mm ] [mm ] [gl/gg] [A] / / / / / / / / 63 / / / / / / / / / / / up to 60 0 / 3 3 / up to 60 0 / 3 3 / up to 60 ) The SD7 3-0 surge arrester does not require a safety fuse up to 0 ka. -pole and multipole surge arresters SD7 300-, SD7 30-, SD7 30-, SD7 30-4, SD7 303-, SD , SD7 303-, SD , SD7 33-, SD7 34-, SD7 3-, SD7 36-, SD7 37-, SD7 38- Fuse upstream Lq Lq Lq3 Fuse F [gl/gg] [A] [mm ] [mm ] [mm ] [A] / / / / / 63 / 80 3 / 00 0 / 0 / 60 9 up to 00 0 up to 0 / up to > 0 / up to Lq I_0793 Lq Lq F F Lq F S P D I_0794 Lq3 S P D Lq3 F Safety fuse Lq Conductor cross-section of system Lq Arrester cross-section to surge arrester Lq3 Conductor cross-section with ground fault Combination arrester SD , SD7 343-, SD Feed-through connection Arrester connection ) MCB Lq = Lq Lq3 MCB Lq Lq Lq3 Fuse F upstream upstream [AgL] [mm ] [mm ] [gl/gg] [mm ] [mm ] [mm ] [gl/gg] / / / / / / / / / / 0 / 3 / > 0 / 0 / ) Follow current discharge capacity 0 ka. / = No arrester protection necessary /6

27 Circuit diagrams Connection overview TN-C system L F Configuring aids 3 L L3 L N N F * Wh F3 Terminal PE PE 6 4 arresters class B 4 arresters class C Arrester module class D I_07b A 7 * For feeding with a TN-C system, the arrester between N and PE is omitted 8 TT system "wiring 3+" ) L F 9 L L3 F F3 L 0 Wh Terminal N N PE PE 3 arresters class B N/PE-arrester class B 3 arresters class C N/PE-arrester class C N/PE arrester module class D I_074c A 3 For protection rating F and F3, see pages /3 to /6. An S-differential must be fitted if the lightning and surge arresters are to be installed upstream of the residual current operated circuitbreaker. ) In the case of single-phase TT systems, the circuit diagram is called "Wiring+". /7