Modular devices

More documents

Recommendations

Info

MiniaOvervoltage protectionsRECOMMENDATIONS FOR DESIGN, INSTALLATION AND MEASUREMENT OF OVERVOLTAGE PROTECTIONSConversion tables of former and new designsType 1Type 2Type 3Formerly produced devicesNewly produced devicesType designation ID Type designation IDNoteSJBplus-50-1,5 34715 SJBplus-50-2,5 39227 adequate designSJBplus50/1,5 14423 SJBplus-50-2,5 39227 adequate designSJBplus-50 34714 SJBplus-50-2,5 39227 innovation - electronic ignition spark gapSJBplus50 14424 SJBplus-50-2,5 39227 innovation - electronic ignition spark gapSJBpro-35-1,5 34713SJB-25E-3-MZS 38357 multipole design (3+0; TN-C)SJB-25E-3N-MZS 38358 multipole design (3+1; TN-S, TT)SJBpro35/1,5 14422SJB-25E-3-MZS 38357 multipole design (3+0; TN-C)SJB-25E-3N-MZS 38358 multipole design (3+1; TN-S, TT)SJBpro-35 34712SJB-25E-3-MZS 38357 multipole design (3+0; TN-C)SJB-25E-3N-MZS 38358 multipole design (3+1; TN-S, TT)SJBpro35 13019SJB-25E-3-MZS 38357 multipole design (3+0; TN-C)SJB-25E-3N-MZS 38358 multipole design (3+1; TN-S, TT)SJB100/NPE/1,5 14425 SJB-NPE-1,5 34716 adequate designSVM440-Z 18565 SVM-440-Z 34720 adequate designSVM440-ZS 18566 SVM-440-ZS 34721 adequate designSVM-275-Z 34717SVC-350-3-MZ 38365 multipole design (3+0; TN-C)SVC-350-3N-MZ 38367 multipole design (3+1; TN-S, TT)SVM275-Z 13004SVC-350-3-MZ 38365 multipole design (3+0; TN-C)SVC-350-3N-MZ 38367 multipole design (3+1; TN-S, TT)SVM-275-ZS 34718SVC-350-3-MZS 38366 multipole design (3+0; TN-C)SVC-350-3N-MZS 38368 multipole design (3+1; TN-S, TT)SVM275-ZS 13005SVC-350-3-MZS 38366 multipole design (3+0; TN-C)SVC-350-3N-MZS 38368 multipole design (3+1; TN-S, TT)SVM260/NPE-Z 14426 SVM-NPE-Z 34723 adequate designSVL-275 37405 SVC-275-1 38842 adequate designSVL275 07439 SVC-275-1 38842 adequate designSVL-275-S 37406 SVC-275-1-S 38843 adequate designSVL275S 07440 SVC-275-1-S 38843 adequate designSJL275 07441 SVC-275-1 38842 higher I n, higher I maxSJL275S 07442 SVC-275-1-S 38843 higher I n, higher I maxSVL-NPE-S 37410 SVC-255-N-S 38844 adequate designSVD-250M-ZS 34725 SVD-253-1N-MZS 38371 adequate designSVD250M-ZS 13020 SVD-253-1N-MZS 38371 adequate designVaristor function testVaristor is able to provide protection against overvoltagerepeatedly. However, every such actuating changesits structure to certain extent. We can detect bytimely varistor check whether is this change of structureand resulting varistor function already beyond theacceptable limit or not.Table of tolerance zones at 1 mAType designation Product Voltage tolerance zone Type designation Product Voltage tolerance zonecode at 1 mA (formerly produced devices) code at 1 mASVBC-12,5-1 39027 459 - 561 V SVL-275 37405 459 - 561 VSVBC-12,5-1-S 38945 459 - 561 V SVL-275-S 37406 459 - 561 VSVC-275-1 38842 459 - 561 V SVM-275-Z 34717 387 - 473 VSVC-275-1-S 38843 459 - 561 V SVM-275-ZS 34718 387 - 473 VSVC-350-3-MZ 38365 509 - 621 V SVM-275 34719 387 - 473 VSVC-350-3-MZS 38366 509 - 621 V SVL275 07439 459 - 561 VSVC-350-3N-MZ 38367 509 - 621 V SVL275S 07440 459 - 561 VSVC-350-3N-MZS 38368 509 - 621 V SVM275-Z 13004 387 - 473 VSVC-350-1-M 38369 509 - 621 V SVM275-ZS 13005 387 - 473 VSVM-440-Z 34720 644 - 786 V SVM275 13003 387 - 473 VSVM-440-ZS 34721 644 - 786 V SVM440-Z 18565 644 - 786 VSVM-440 34722 644 - 786 V SVM440-ZS 18566 644 - 786 VSVF-1000-2VB-MZ 39165 960 - 1056 V SVM440 18564 644 - 786 VSVF-1000-2VB-MZS 39527 960 - 1056 VSVF-600-3V-MZ 39528 558 - 682 VSVF-600-3V-MZS 39529 558 - 682 VSVF-1000-V-M 39166 960 - 1056 VSVF-600-V-M 39530 558 - 682 VD22Standard EN 62 305-4 requires besides others alsoperiodic overvoltage protections checks. This check isusually completed with varistor measurement.On principle, the check of overvoltage protections is carriedout by connecting to the DC voltage, while increasing thevoltage to the point when current 1 mA flows through thearrester. Subsequently the voltage level is deducted. This iscarried out repeatedly also for the opposite polarity.If the deducted voltage level is in between the Voltagetolerance zone given in the table, the overvoltage protectionis functional. In the opposite case it is necessaryto replace the overvoltage protection or its module. Thetable of Voltage tolerance zones is given below.
Overvoltage protectionsMiniaRECOMMENDATIONS FOR DESIGN, INSTALLATION AND MEASUREMENT OF OVERVOLTAGE PROTECTIONSGeneralProtection of buildings and electrical equipment againstlightning effects and overvoltage is carried out both outsideand inside the building. Еxternal protection devicesinclude lightning traps, conductor arresters, earthing systems,discharge arresters etc. internal protection measuresinclude equipotential bonding, screening etc.The basis of internal protection against lightning effectsand overvoltage is protective equipotential bonding,i.e. connection of all metallic wiring to an equipotentialEP busbar (EP – equipotential point). This eliminatespotential differences in the wiring over a permissiblelimit with subsequent damaging discharge.Lightning current arresters and surge voltage arresters arethe elements of internal protection. They connect powercables to the EP busbar indirectly through arrester gapsand varistors and thus reduce overvoltage. The overvoltagereduction is normally carried out in 3 stages, whileeach stage has to reduce overvoltage. The degree of reductionis defined by overvoltage categories according toEN 60664-1. The arrester stages 1 to 3 are installed on theinterface of individual overvoltage categories – see Fig. 1.Stage 1 – coarse protection – type 1This protection is provided by lightning current arresters SJB,which arrest the biggest part of the overvoltage wave, andare able to divert lightning currents or their substantial partswithout damage. It is possible to deduct from EN 62305-4that in the most adverse case with 2-wire power lead the lightningcurrent arresters must arrest up to 50 kA per pole. Incase of 4-wire power lead it is 25 kA per pole of impulse currentwith the waveform 10/350 μs. They can achieve these parameters,because they are designed on the spark gap basis.1st + 2nd stage – compact combined arrester– type 1 + type 2 +SJBC devices are compact combined arresters of type 1 andtype 2. They provide advantages of rough and mediumprotection stages described in the previous and subsequentparagraphs in one device. The first and second stages are basedon the arrester gap and varistor respectively. Their installationin one base is possible thanks to the technology of electronicignition release.This solution will be used in case of placementof the 1st and 2nd protection stages in one switchboard.Also SVBC is part of this group. It is also combined arrestertype 1 and 2. However, both stages are varistor based. On thecontrary to SJBC the type SVBC can arrest lightning currentonly half of the value. For most applications this „lower output“is sufficient.Stage 2 – medium protection – type 2This protection is provided by varistor-based surge voltage arrestersSVC and SVM, which are able to divert atmospheric surges orovervoltage from switching processes in the network with waveform 8/20 μs without damage. In most cases they are installedafter the lightning current arresters, which reduce overvoltageand „cut off“ the energy of the overvoltage wave. In particularapplications it can be installed in the main switchboard evenwithout the back-up 1. protection stage. For more information onthe selection of optimal solution see table Selection of the numberof protection stages and types on the following page.See Fig. 2 for comparison of the energies diverted by thelightning current arrester 50 kA and surge voltage arrester15 kA. Apparently, the value of pulse current is not sufficientto compare the output of overvoltage protections without theinformation on test wave type.Surge voltage arresters are rated for a specific heat output. Ifthere is high power or too frequent overvoltage in the network,the heat output can be exceeded and the surge voltage arresteris disconnected by its thermal disconnecting device. After disconnectionthe surge voltage arresters are non-functional and itis necessary to replace them or their module. The disconnectionis indicated optically or also remotely.The disconnection is indicated optically or remotely. At insulationmeasurement it is necessary to disconnect the arrestersto get undistorted results.Stage 3 – fine protection – type 3To ensure really reliable protection it is necessary to complementthe above stages 1 and 2 by the last stage – type 3 (SVD). Thebasic elements of the fine protection are varistors and suppressordiodes able to divert the overvoltage with wave form 8/20 μs. Itis recommended to install this protection directly at the protectedappliance, without a long cable between the arrester andthe appliance. In case there is a long line between the last stageand the appliance the voltage in the conductors could rise overa permissible level (e.g. due to induction). We recommend toinstall this stage of protection to the power outlets that feed theovervoltage sensitive appliances (etc. electronics).Surge voltage arresters for photovoltaic systemThe principle of devices protection in applications of photovoltaicsources (600/1000 V d.c.) is similar to the LV networkprotection 230/400 V. It is mainly the reduction of energy ofovervoltage wave that is caused by lightning stroke or byswitching processes in the network. The overvoltage protectionis usually installed at the solar panel. At the lengthof the line between solar panels and inverter L > 10 m werecommend to install the overvoltage protection also at theinverter on the DC side.flatsliftI , I [kA]imp n5015 kA (8/20 μs)50 kA (10/350 μs)U imp(1.2/50 μs)6 kVOvervoltagecategory IVOutside lead4 kVOvervoltagecategory IIIFixed wiringappliances2,5 kV1,5 kVOvervoltage Overvoltagecategory II category IAppliances Light-currentappliance25157.520100 200 300350400t [μs]Fig. 1. Overvoltage categories and impulse withstand voltage U imp(1.2/50 μs) forindividual parts of a building and for rated voltage 230/400 V a.c. – according toEN 60664-1 equivalent IEC 664-1Fig. 2. Wave form and energy 8/20 μs and 10/350 μs (the arrested energy correspondsto the area below the curve)D23
Page 1 and 2:
MiniaModular devices
Page 3:
Modular devicesMiniaCONTENTSINDEX .
Page 6 and 7:
MiniaModular devicesNOTESA4
Page 8 and 9:
MiniaLPEMiniature circuit breakersM
Page 10 and 11:
Page 12 and 13:
Page 14 and 15:
MiniaLPNMiniature circuit breakersM
Page 16 and 17:
Page 18 and 19:
Page 20 and 21:
vMiniaLPNMiniature circuit breakers
Page 22 and 23:
MiniaLSTMiniature circuit breakersM
Page 24 and 25:
vMiniaLSTMiniature circuit breakers
Page 26 and 27:
MiniaMiniature circuit breakersAUXI
Page 28 and 29:
MiniaMiniature circuit breakersSHUN
Page 30 and 31: MiniaMiniature circuit breakersSHUN
Page 32 and 33: MiniaMiniature circuit breakersUNDE
Page 34 and 35: MiniaLOCKING INSERTOD-LP-VU01Miniat
Page 36 and 37: MiniaINSULATING BARRIERSOD-LP-MP01M
Page 38 and 39: MiniaOLEResidual current circuit br
Page 40 and 41: MiniaOLEResidual current circuit br
Page 42 and 43: MiniaOLIResidual current circuit br
Page 48 and 49: MiniaResidual current circuit break
Page 50 and 51: MiniaOFEResidual current circuit br
Page 52 and 53: MiniaOFEResidual current circuit br
Page 54 and 55: MiniaOFIResidual current circuit br
Page 56 and 57: MiniaOFIResidual current circuit br
Page 62 and 63: MiniaOvervoltage protectionsOVERVIE
Page 64 and 65: MiniaOvervoltage protectionsLIGHTNI
Page 66 and 67: MiniaOvervoltage protectionsLIGHTNI
Page 68 and 69: MiniaOvervoltage protectionsCOMBINE
Page 70 and 71: MiniaOvervoltage protectionsCOMBINE
Page 72 and 73: MiniaOvervoltage protectionsSURGE V
Page 80: MiniaOvervoltage protectionsSURGE V
Page 85 and 86: Overvoltage protectionsMiniaRECOMME
Page 87 and 88: SVBC-12,5 SVBC-12,5 SVBC-12, 5SVBC-
Page 89 and 90: Overvoltage protectionsMiniaRECOMME
Page 91 and 92: MiniaInstallation relays...........
Page 93 and 94: Other devicesMiniaINSTALLATION RELA
Page 95 and 96: Other devicesMiniaINSTALLATION CONT
Page 101 and 102: Other devicesMiniaPRIORITY CURRENT
Page 103 and 104: Other devicesMiniaMULTIPLE-FUNCTION
Page 105 and 106: Other devicesMiniaMULTIPLE-FUNCTION
Page 107 and 108: Other devicesMiniaTIME RELAYSFor pe
Page 109 and 110: Other devicesMiniaTIME RELAYSDiagra
Page 111 and 112: Other devicesMiniaIMPULSE MEMORY RE
Page 113 and 114: Other devicesMiniaIMPULSE MEMORY RE
Page 115 and 116: Other devicesMiniaSTAIR SWITCHESSpe
Page 117 and 118: Other devicesMiniaTIMERSMechanical
Page 119 and 120: Other devicesMiniaTUMBLER POWER SWI
Page 125 and 126: Other devicesMiniaTUMBLER SWITCHEST
Page 127 and 128: Other devicesMiniaTUMBLER SWITCHESR
Page 129 and 130: Other devicesMiniaROCKER-TYPE SWITC
Page 131 and 132:
Other devicesMiniaPUSH-BUTTON SWITC
Page 133 and 134:
Other devicesMiniaCONTROL PUSH-BUTT
Page 135 and 136:
Other devicesMiniaSIGNAL LIGHTSSign
Page 137 and 138:
Other devicesMiniaELECTRIC BELLS AN
Page 139 and 140:
Other devicesMiniaPOWER SUPPLIESSpe
Page 141 and 142:
Other devicesMiniaSOCKET OUTLETSMod
Page 143 and 144:
Other devicesMiniaINTERCONNECTING B
Page 145 and 146:
17292181729Other devicesMiniaINTERC
Page 147 and 148:
Other devicesMiniaTERMINAL EXTENSIO
Page 149 and 150:
Other devicesMiniaTERMINAL BOARDTer
Page 151 and 152:
Modular devicesMiniaGLOSSARYNote: P
Page 153 and 154:
Modular devicesMiniaNOTES
Page 155 and 156:
OEZ s.r.o.Šedivská 339561 51 Leto
show all

Modular devices

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?