NEW surge protective devices

Transcription

1 NEW surge protective devices For use in low-voltage systems For overhead power lines and buildings Made in EU

2 ABOUT COMPANY INTRODUCTION Company ELEKTROMEHANIKA & BB d.o.o. was established from recent company ElektroMehanika Oblak, which history reaches in From beginning it was a family company, which grows now days into bigger market player, still with a 100% private ownership. The main production based on manufacturing of over voltage protection for low voltage systems. All products comply with IEC/EN COMPANY VISION As small flexible company our goal is to become an important player on low voltage over voltage protection all over the European markets. Expending our range of products in way of customer s requirements and market necessities achieve success and constant growth for the company and for our employees, customers as well and for everything surrounds us. COMPANY STRATEGY To conquer different markets of our customers, partners, suppliers and consequently make constant development of the company. Make EBB brand one of the strongest and most recognized all over the Europe. With different brandings, conquer confidence of big European companies and become main supplier for over voltage program. Ensure very high level of quality, follow the market trends and IEC requirements and mostly with optimization level of the production process be able to offer competitive prices

3 GENERAL A transient overvoltage protection device acts as a ground in parallel with the equipment to be protected. When the supply voltage is lower than its activation voltage, the protector acts as a high-impedance element so that no current flows through it. By contrast, when the supply voltage is higher than the activation voltage, the protector acts as an element with an impedance close to zero, leading the overvoltage to earth and preventing it from affecting the receivers. In our daily lives most obvious consequences of damage caused by over-voltage is the destruction of electrical equipment, as in private house following are specifically; TV, Video, Hi-Fi, computers, telephone and fire system, monitoring equipment, etc. In case of unprotect equipment against surges following failure of such equipment can certainly incurs; loss of computer data, damage of heating / cooling water or air systems, damage of elevators, etc. Damage statistics of an insurance company Analysis of about 9000 damages by leading Insurance campanies Water 6 % Negligence 23 % Fire 5 % Theft 7 % Other 27 % Storm 1 % Lighting and voltage surgers 31 % - 4 -

4 CAUSES FOR OVER VOLTAGES The largest voltage peaks in the low-voltage systems are caused by atmospheric discharges. The high energy is content when a direct strike hit the external over voltage protection system or a low-voltage overhead line. Without internal over-voltage protection the strike usually causes a total outage of the connected equipment and damage of the installation. Induced voltage peaks in building installations and energy or data supply cables can also many times reach the nominal operating voltage. Switching operation on the power distribution system can result switching surges, as switching of transformers, motors or disconnection of circuit breakers or cut outs (i.e in the distribution circuits) lead to over voltages that penetrate the user s building, which in fact do not cause such high voltage peaks as atmospheric discharges but occur much more frequently and can result in immediate system failure. Practical field explains that switching surges reach two to three times the operating voltage; meanwhile atmospheric discharges can sometimes reach 20 times the nominal voltage value and transport high energy content. A number of different protection measures are required. These depend on the exact cause and/or impact point of the atmospheric discharge. 1. Direct atmospheric discharges into house or over-head line We re talking about direct atmospheric discharge, when lightning strike hits external protection system of roof or low-voltage over-head line. Usually the potential increase causes the lightning current to be split over the building s earthing system and also over the power supply systems and data cables to the adjacent earthing systems. 2. Indirect atmospheric discharges into house or over-head line We re talking about indirect atmospheric discharge, as a cause of direct lightning strike in radius approx. 2km. 3. Switching surges Switching surges are caused by switch-on and switch off operations (switching inductive or capacitive loads) and by interrupting short-circuit currents. Particularly when production plants, lighting systems, bigger electro motors or transformers are switched of lead to over voltages that penetrate the user s building. Significantly, the closer the building is to a generating station the higher Surge may occur. -5-

5 TERMINOLOGY OF ELECTRICAL CHARACTERISTICS Surge arrester or SPD A device composed of at least one non-linear component that is intended for limiting surge voltages on electrical equipment by diverting or limiting surge current. Nominal discharge current I n Crest value of the current through the SPD having a current waveshape 8/20. It is used to determine U p value. Voltage protection level U p Maximum discharge current I max Impulse discharge current for class I test I imp Class I Class II Maximum continuous operating voltage U c Temporary overvoltage test value U t Maximum voltage to be expected at the SPD terminals due to an impulse stress with I n value for Class I & II. Crest value of a current through the SPD having an 8/20 waveshape and magnitude according to the manufacturing specification. I max is equal to or greater than I n. Crest value of a discharge current through the SPD with specified charge transfer Q and specified energy W/R in the specified time. SPD Class I is designed to discharge high current 10/350 waveshape. This is first protection in buildings. SPD Class II is designed to discharge high current 8/20 waveshape. This is second protection in buildings. Maximum r.m.s. voltage, which may be continuously applied to the SPD`s mode of protection. Test voltage applied to the SPD for specific duration t T, to simulate the stress under TOV conditions

6 PRODUCT SELECTION Correct choice of over voltage arresters depends on a several criteria`s defined when calculating the atmospheric discharges. Correct decision consequently influence on the complete level of protection. During the project designing all parameters in this preceding guide, sections under installation rule, must be considered, as well makes us better understanding of complete over voltage theory. For proper selections of SPD must it is necessary to choose next parameters: 1. Class acc. IEC/EN (Class I, I+II, II, III) Proper protection always consists with three step protection. Class I SPD`s are build as first protection (where supplying cable comes into the building), Class II SPD`s are installed as a second protection (is installed parallel between first and third protection), Class III SPD`s are installed directly before equipment. 2. Maximum operating voltage U c During the calculation, it`s not allowed to use overvoltage arrester with lower U c value, as maximum operating voltage of the system U c voltage should be at least 20% higher than U n. 3. Protection level U p When choosing the protection level Up, you must consider the level of overvoltage that the equipment to be protected can withstand. The lower the value of Up, the better the protection. 4. Network`s earthing system In electricity supply systems, an earthing system or grounding system is circuitry which connects parts of the electric circuit with the ground, thus defining the electric potential of the conductors relative to the Earth s conductive surface. The choice of earthing system can affect the safety and electromagnetic compatibility of the power supply. Please see page with EARTHING SYSTEMS

7 EARTHING SYSTEMS IEC designates low voltage distribution networks with using of two letters. The first letter represents the grounding method used at the source (i.e. the secondary side of the power distribution transformer). The second letter represents the grounding method used at the consumer s electrical installation for any conductive metal parts. T-> neutral point directly connected to ground of power supply source (star point of transformer secondary winding); N-> exposed conductive parts are directly connected to earth rod; C-> neutral and protective conductor are connected; PEN. T-> neutral point directly connected to ground of power supply source (star point of transformer secondary winding); N-> exposed conductive parts are directly connected to earth rod; S-> neutral and T-> neutral point directly connected to ground of power supply source (star point of transformer secondary winding); T-> exposed conductive parts are directly grounded independent of eventual existing grounded feeding point. I-> neutral point isolated of power supply source from ground, or connection via a high impedance; T-> exposed conductive parts are directly grounded independent of eventual existing grounded feeding point

8 INSTALLATION RULES Proper Installation acc. to the system network - 3 phase network Single-pole can be used, as well! Proper Installation acc. to the system network - 1 phase network Multi-pole can be used, as well! - 9 -

9 OVER VOLTAGE ARRESTER OVER VOLTAGE ARRESTER FOR POWER LINES Company EBB offers overvoltage arresters PZ-A with operating voltages Uc=280V, 440V, 500V, 660V and nominal discharge currents In=5kA and 10kA. PZ-A arresters are provided to protect low voltage equipment in AC networks against direct, indirect and switching overvoltages. They are used in overhead lines in electro distribution. It is recommended that an arrester is installed on every 500m of a line. Arrester uses ZnO varistor as main component and its upper connection has a 19mm/M8 screw. The grounding connection on the side of the arrester has a clamp for connection for four arresters in line. Arrester is encapsulated in a UV resistant polyamide housing (PA66GF30). This provides a very good protection against weather influences and suitable dielectric strength. There are three types of arresters; one is designed with signalization and two without it. ZnO-surge arrester basic information SPD type acc. to ; 2011 Class II SPD type acc. to VDE 0675/6 A Max operating voltage (Uc) 280V, 440V, 500V, 660V Nominal discharge current (In) 5kA & 10 ka Max discharge current (Imax) 40kA & 50 ka Protection level (Up) 900V 2100V Energy absorption capability > 3,5 kj/kv Installation Outdoor Frequency Hz For system voltages Up to 1 kv Operating temperatures -40 / +85 C Relative humidity Up to 95 %

10 OVER VOLTAGE ARRESTER List of products Type Uc [V] In [ka] Imax [ka] Up [V] Disconnector Picture PZ-A (280/5) -O Yes PZ-A (440/5) -O Yes PZ-A (500/5) -O Yes PZ-A (660/5) -O Yes PZ-A (280/10) -O Yes PZ-A (440/10) -O Yes PZ-A (500/10) -O Yes PZ-A (660/10) -O Yes PZ-A (280/5) No PZ-A (440/5) No PZ-A (500/5) No PZ-A (660/5) No PZ-A (280/10) No PZ-A (440/10) No PZ-A (500/10) No PZ-A (660/10) No PZ-A (280/5) -S No PZ-A (440/5) -S No PZ-A (500/5) -S No PZ-A (660/5) -S No PZ-A (280/10) -S No PZ-A (440/10) -S No PZ-A (500/10) -S No PZ-A (660/10) -S No Housing dimensions for types: PZ-A (xxx/xx) O PZ-A (xxx/xx)

11 OVER VOLTAGE ARRESTER Disconnection: Disconnected arrester; replacement needed Normal condition CLAMPS for OVER VOLTAGE ARRESTER Class II Group A A B C D E F G H A Clamp for lines without insulation (naked line), mm 2 B Clamp EBB bilateral breakthrough for isolated conductors AI/Al mm 2 C D E F G H Clamp EBB unilateral breakthrough for naked or isolated lines, only for Aluminum conductor. Aluminum naked conductor mm 2 Aluminum isolated conductor mm 2 Clamp is intended to connect a surge arrester to insulated aluminum or copper conductors. Design of connector enables hot line installation without peeling insulation from conductor mm 2. Clamp unilateral breakthrough for isolated lines. The design enables hotline installation. Main conductor Al mm² or Cu mm². Linear clamp as a conductor in insulation ASXS 16 mm 2 length 200 mm. EBB clamp for transformers, for direct connection arresters to transformer. Transformer clamp for direct connection arresters to clamp type TOGA. PZ-A (280, 440, 500, 660/5-10) - O / PZ-A (280, 440, 500, 660/5-10) / PZ-A (280, 440, 500, 660/5-10) - S

12 OVER VOLTAGE ARRESTER - FITTING INSTRUCTION PZ-A (XXX/X)-0/A PZ-A (XXX/X)-0/E L1, L2, L3, N L1, L2, L3, N M = 4 Nm M = 4 Nm A Clamp for lines without insulation (naked line), mm² E Clamp unilateral breakthrough for isolated lines. The design enables hotline installation. Main conductor Al mm² or Cu mm². PZ-A (XXX/X)-0/B,C PZ-A (XXX/X)-0/F L1, L2, L3, N L1, L2, L3, N M = 4 Nm M = 4 Nm B, C Clamp EBB bilateral breakthrough for isolated conductors AI/Al mm² Clamp EBB unilateral breakthrough for naked or isolated lines, only for Aluminum conductor. Aluminum naked conductor mm² - Aluminum isolated conductor mm² F Clinear clamp as a conductor in insulation ASXS 16 mm² length 200 mm. PZ-A (XXX/X)-0/D L1 L2 L3 N Connecting the ground conductor is the responsibility of power distribution L1, L2, L3, N Disconnection: M = 4 Nm D Clamp is intended to connect a surge arrester to insulated aluminum or copper conductors. Design of connector enables hot line installation without peeling insulation from conductor mm² Normal condition Disconnected arrester; replacement needed

13 CERTIFICATES

14 CERTIFICATES

15 OVER VOLTAGE ARRESTERRUBRIKA OVER VOLTAGE ARRESTER FOR BUILDINGS IEC / EN / VDE: Class I, II / Type 1, 2 / B + C Over voltage surge protective devices ClassI+II has been developed to protect against partial direct and indirect lightning discharges and is intended to provide protection in zones 0A 1 as per IEC It consists of a high performance varistor block with thermal disconnection device. EBB Class I+II products are designed to protect buildings and equipment up to I imp 10kA. ZnO-surge arrester basic information SPD type acc. to ; 2011 Class I+II SPD type acc. to VDE 0675/6 B+C Max operating voltage (U c ) 275V Nominal discharge current (I n ) 25kA & 30 ka Max discharge current (I max ) 50kA & 60 ka Impulse discharge (I imp ) 5kA & 10kA Protection level (U p ) 1300V 1500V Installation Indoor & Outdoor Frequency Hz Operating temperatures -40 / +85 C Relative humidity Up to 95 % Location of use: Main distribution boards Network systems: TN-S, TN-C, IT, TT / TT Protection modes: L/N - PE, L- PEN / N - PE Protective elements: High energy MOV Leakage current: Low leakage current Housing: Modular design Complies with: IEC/EN Type & ordering code U c [V] I imp [ka] I n [ka] I max [ka] Housing dimensions DIN Signaling Weight [g] Packaging [pcs] PZ-B 275 / TE /12 PZ-B 275 / 60 R TE Remote 160 1/12 PZ-B 275 / 120 1p+N TE /6 PZ-B 275 / 120 R 1p+N TE Remote 325 1/6 PZ-B 275 / 180 3p TE /4 PZ-B 275 / 180 R 3p TE Remote 490 1/4 PZ-B 275 / 240 4p TE /3 PZ-B 275 / 240 R 4p TE Remote 660 1/3 MODUL PZ-B 275 / /12 PZ-B 275 / TE /12 PZ-B 275 / 50 R TE Remote 150 1/12 PZ-B 275 / 100 1p+N TE 280 1/6 PZ-B 275 / 100 R 1p+N TE Remote 300 1/6 PZ-B 275 / 150 3p TE 420 1/4 PZ-B 275 / 150 R 3p TE Remote 450 1/4 PZ-B 275 / 200 3p+N TE 560 1/6 PZ-B 275 / 200 R 3p+N TE Remote 600 1/6 MODUL PZ-B 275 / /12 MODUL PZ-B 275 / /12 Ordering explanation: PZ-B SPD type B / class I 275 / 60 Uc (275V) / Imax (60, 120, 180, 240kA) 275 / 50 Uc (275V) / Imax (50, 100, 150, 200kA) R remote 1p number of poles (1, 2,3,4) N Neutral pole

16 OVER VOLTAGE ARRESTER PZ-B 275/60 1 POLE I imp = 10kA PZ-B 275/50 1 POLE I imp = 5kA PZ-B 275/120 1P+N 2 POLE (2TE) I imp = 10kA PZ-B 275/100 1P+N 2 POLE (1TE) I imp = 5kA PZ-B 275/180 3P 3 POLE (3TE) I imp = 10kA PZ-B 275/150 3P 3 POLE (3TE) I imp = 5kA PZ-B 275/240 3P+N 4 POLE (4TE) I imp = 10kA PZ-B 275/200 3P+N 4 POLE (2TE) I imp = 5kA

17 OVER VOLTAGE ARRESTER Technical data PZ-B Type PZ-B 275 / 60 PZ-B 275 / 50 Category (IEC / EN / VDE) Class I, II / Type 1, 2 / B + C Class I, II / Type 1, 2 / B + C Max. operating voltage (U c ) 275V 275V Nominal discharge current (I n ) 30 ka 25 ka Max. discharge current (I max ) 60 ka 50 ka Impulse current (I imp ) 10 ka 5 ka Charge 5 As 2,5 As Protection level (U p ) 1450V 1300V Response time <25ns <25ns Back-up fuse 125AgL 125AgL Short-circuit withstand current 25 ka 10 ka Operating temperature -40 C C -40 C C Terminal screw torque Max. 4,0Nm Max. 4,0Nm Terminal cross section (max) Stranded 35mm 2 ; flexible 25mm 2 Stranded 35mm 2 ; flexible 25mm 2 Mounting on 35mm DIN rail acc. to EN mm DIN rail acc. to EN Degree protection IP20 IP20 Dimension acc. to DIN TE 1TE Test standards IEC :2005 2nd edition IEC :2002+A11:2007 IEC :2011 1st edition Additional data for SPD`s with remote signaling Remote signalization Yes Yes Switching capability 125V/3A 125V/3A Terminal cross section (max) 1,5mm 2 1,5mm 2 OVER VOLTAGE ARRESTER IEC / EN / VDE: Class II / Type 2 / C Product PZ-C is designed to protect low voltage devices from surge damages, mainly used in power supply system, such as power distribution-room, distribution-cabinet and other important power supply systems. Widely used to protect mobile communication station, telecommunication centre, airport and others. ZnO-surge arrester basic information SPD type acc. to ; 2011 Class II SPD type acc. to VDE 0675/6 C Max operating voltage (U c ) 275V, 320V, 440V Nominal discharge current (I n ) 20kA Max discharge current (I max ) 40kA Protection level (U p ) 1300V 2200V Installation Indoor & Outdoor Frequency Hz Operating temperatures -40 / +85 C Relative humidity Up to 95 % Location of use: Sub-distribution boards Network systems: TN-S, TN-C, IT, TT (only L-N) / TT Protection modes: L/N - PE, L - PEN / N - PE Protective element: MOV Housing: Modular design Complies with: IEC/EN

18 OVER VOLTAGE ARRESTER Type & ordering code U c [V] I n [ka] I max [ka] Housing dimensions DIN Signaling Weight [g] Packaging [pcs] PZ-C 275 / TE /12 PZ-C 275 / 40 R TE Remote 115 1/12 PZ-C 320 / TE /12 PZ-C 320 / 40 R TE Remote 115 1/12 PZ-C 440 / TE /12 PZ-C 440 / 40 R TE Remote 115 1/12 PZ-C 275 / 80 1p+N TE /6 PZ-C 275 / 80 R 1p+N TE Remote 240 1/6 PZ-C 320 / 80 1p+N TE /6 PZ-C 320 / 80 R 1p+N TE Remote 240 1/6 PZ-C 440 / 80 1p+N TE /6 PZ-C 440 / 80 R 1p+N TE Remote 240 1/6 PZ-C 275 / 80 1p+N TE /12 PZ-C 275 / 80 R 1p+N TE Remote 140 1/12 PZ-C 320 / 80 1p+N TE /12 PZ-C 320 / 80 R 1p+N TE Remote 143 1/12 PZ-C 440 / 80 1p+N TE /12 PZ-C 440 / 80 R 1p+N TE Remote 276 1/12 PZ-C 275 / 160 3p+N TE /3 PZ-C 275 / 160 R 3p+N TE Remote 470 1/3 PZ-C 320 / 160 3p+N TE /3 PZ-C 320 / 160 R 3p+N TE Remote 470 1/3 PZ-C 440 / 160 3p+N TE /3 PZ-C 440 / 160 R 3p+N TE Remote 470 1/3 PZ-C 275 / 160 3p+N TE /6 PZ-C 275 / 160 R 3p+N TE Remote 270 1/6 PZ-C 320 / 160 3p+N TE /6 PZ-C 320 / 160 R 3p+N TE Remote 273 1/6 PZ-C 440 / 160 3p+N TE /6 PZ-C 440 / 160 R 3p+N TE Remote 276 1/6 PZ-C 275 / 120 3p TE /4 PZ-C 275 / 120 R 3p TE Remote 350 1/4 PZ-C 320 / 120 3p TE /4 PZ-C 320 / 120 R 3p TE Remote 350 1/4 PZ-C 440 / 120 3p TE /4 PZ-C 440 / 120 R 3p TE Remote 350 1/4 PZ-C 275 / 80 1p+NPE TE /6 PZ-C 275 / 80 R 1p+NPE TE Remote 205 1/6 PZ-C 320 / 80 1p+NPE TE /6 PZ-C 320 / 80 R 1p+NPE TE Remote 205 1/6 PZ-C 440 / 80 1p+NPE TE /6 PZ-C 440 / 80 R 1p+NPE TE Remote 205 1/6-19 -

19 OVER VOLTAGE ARRESTER Type & ordering code U c [V] I n [ka] I max [ka] Housing dimensions DIN Signaling Weight [g] Packaging [pcs] PZ-C 275 / 80 1p+NPE TE /12 PZ-C 275 / 80 R 1p+NPE TE Remote 140 1/12 PZ-C 320 / 80 1p+NPE TE /12 PZ-C 320 / 80 R 1p+NPE TE Remote 143 1/12 PZ-C 440 / 80 1p+NPE TE /12 PZ-C 440 / 80 R 1p+NPE TE Remote 146 1/12 PZ-C 275 / 160 3p+NPE TE /3 PZ-C 275 / 160 R 3p+NPE TE Remote 435 1/3 PZ-C 320 / 160 3p+NPE TE /3 PZ-C 320 / 160 R 3p+NPE TE Remote 435 1/3 PZ-C 440 / 160 3p+NPE TE /3 PZ-C 440 / 160 R 3p+NPE TE Remote 435 1/3 PZ-C 275 / 160 3p+NPE TE /6 PZ-C 275 / 160 R 3p+NPE TE Remote 275 1/6 PZ-C 320 / 160 3p+NPE TE /6 PZ-C 320 / 160 R 3p+NPE TE Remote 278 1/6 PZ-C 440 / 160 3p+NPE TE /6 PZ-C 440 / 160 R 3p+NPE TE Remote 276 1/6 PZ-C GDT TE /12 MODUL PZ-C GDT TE 35 1/12 MODUL PZ-C 275/ TE/TE(2P) 50 1/12 MODUL PZ-C 320/ TE/TE(2P) 50 1/12 MODUL PZ-C 440/ TE/TE(2P) 50 1/12 Ordering explanation: PZ-C SPD type C / Class II 275 / 40 Uc (275V, 320V, 440V) / Imax (40, 80, 120, 160kA) R remote 1p number of poles (1, 2,3,4) N Neutral pole

20 OVER VOLTAGE ARRESTER PZ-C 275/40 1 POLE (1TE) PZ-C 275/80 1P+N 2 POLE (2TE) PZ-C 275/80 1P+N 2 POLE (1TE) PZ-C 275/120 3P 3 POLE (3TE) PZ-C 275/160 3P+N 4 POLE (4TE) PZ-C 275/160 3P+N 4 POLE (2TE)

21 OVER VOLTAGE ARRESTER Type PZ-C 275 PZ-C 320 PZ-C 440 PZ-GDT 255/40 Category (IEC / EN / VDE) Class II / Type 2 / C Class II / Type 2 / C Class II / Type 2 / C Class II / Type 2/ C Max. operating voltage (Uc) 275V 320V 440V 255V Nominal discharge current (In) 20kA 20kA 20kA 20kA Max. discharge current (Imax) 40kA 40kA 40kA 40kA Protection level (Up) 1300V 1500V 2200V 1300 Follow current If No No No >100A Response time <25ns <25ns <25ns <100ns Thermal decoupler Yes Yes Yes Yes Back-up fuse 125AgL 125AgL 125AgL Short-circuit withstand current 25kA 25kA 25kA Operating temperature -40 C +85 C -40 C +85 C -40 C +85 C -40 C +85 C Terminal screw torque Max 4Nm Max 4Nm Max 4Nm Max 4Nm Terminal cross section (max) Stranded 35mm 2 ; Stranded 35mm 2 ; Stranded 35mm 2 ; Stranded 35mm 2 ; flexible 25mm 2 flexible 25mm 2 flexible 25mm 2 flexible 25mm 2 Mounting on 35mm DIN rail acc. to 35mm DIN rail acc. to 35mm DIN rail acc. to 35mm DIN rail acc. to EN EN EN EN Degree protection IP20 IP20 IP20 IP20 Dimension acc. to DIN TE 1TE 1TE 1TE Test standards IEC :2005 2nd edition IEC :2002+A11:2007 IEC :2005 2nd edition IEC :2002+A11:2007 IEC :2005 2nd edition IEC :2002+A11:2007 IEC :2005 2nd edition IEC :2002+A11:

22 OVER VOLTAGE ARRESTER Dimension pictures 1 TE and lateral side dimension picture 2TE 3TE 4TE

23 OVER VOLTAGE ARRESTER

24 Elektromehanika & BB d.o.o. Tičnica 2a, SI-1370 Logatec, Slovenia Factory: Obrtna cona Logatec 6a SI-1370 Logatec, Slovenia Made in EU