Low Voltage Products. Third Harmonic Filter THF and THF star System components for assembly and retrofitting. Catalogue THFS2GB 03_05 1SCC330004C0201

Transcription

1 Low Voltage Products Third Harmonic Filter and star System components for assembly and retrofitting Catalogue SGB _ SCCC

2 System components for assembly and retrofitting star, installation in the transformer star point The third harmonic filter star is both economical and compact solution to be used in highly concentrated third harmonic currents. The filter is mitigating third harmonic current and emission voltage towards the line side. The filter can be installed near the transformer station in universal outdoor enclosure, in empty field of the transformer station, in main switchboard or as a separate unit. The third harmonic filter star is installed in the neutral or conductor between the non-earthed transformer star point and the neutral busbar of the main switchboard. DIMESIOIG: According to the supply transformer. PROTECTIO: The protection unit S_ shall be used, when the thermal unbalance current exceeds the -rating and when the T-S-system needs to be monitored. SA L L L (), installation in T-S system in the neutral conduction of the distribution panel The third harmonic filter or star is designed for mitigating third harmonic current and emission voltage towards the line side of the common coupling or group in the T-S-system. The filter is installed in the outgoing group of T-Ssystem, in the outgoing neutral conductor of an UPS-device or in the lighting panel in centralised compensation. The filter is installed in the neutral conductor, while the measuring transformer is installed to the -conductor. Prior to the installation, the purity of T-S-system in the group needs to be measured. The and -conductor of the outgoing group shall not be connected. This condition shall always be monitored. In T-S-system we recommend to assemble the star filter between the transformer star point and and neutral conductor. In this case there is no Hz voltage between neutral and -conductor. DIMESIOIG: According to the supply transformer or fuse. PROTECTIO: The protection unit S_ shall be used, when the thermal unbalance current exceeds the -rating and when the T-S- system needs to be monitored. SA L L L Low Voltage Products

3 I O Versatile assembly options The filter can be installed near the transformer station in universal outdoor enclosure, in empty field of the transformer station, in main switchboard or as a separate unit. The filters are suitable for assembly and retrofitting. MS FILTER BYBASS O OFF Transformer station assembly or retrofitting. Outdoor mounting in cable pillar box. Indoor mounting in modular switchboards. Benfits of the new star filter: More effective mitigation Smaller resistance and fundamental impedance Higher short-circuit capacity % smaller size resulting in halved space need More economical Easy to install Less maintenance work Flexible component assembly Accomodating in narrow series succession or flat pack Only three frame sizes cover area from A...kVA Check star filters Installation and commissioning: The installation of star is in theory easy but in practice certain points have to be checked : Ensure by measurement that there is no parallel current path to the filter Check up also the possible influence of parallel transformers or generators Ensure that the filter is installed in the right location. The neutral conductor from the star point of the transformer is the recommended place. Check up that the current measurement is right. The CT shall always measure the sum of all neutral and earth currents of the network. Check up the relay setting of the protection unit. Check up that there is no largely dimmer loads. Read mounting instruction S Low Voltage Products

4 Auto KORE KORE O l Auto Easy to install OK ByPass Flat combination /Hz /Hz Error /Hz /Hz Error Test R Reset Test Strömberg (+) I OUT SA V~ /Hz SM V~ /Hz SM A A A A A A OK ByPass EASY TO ISTALL: in - out Current transformer in the right place Auxiliary voltage supply simple or redundant IMPORTAT: Eliminate any parallel current path /Hz Error Test R Reset Test /Hz /Hz /Hz Error See Mounting Instructions and S and check list. O OFF I O OUT I (+) A S arrow combination Low Voltage Products

5 Selection and dimensioning of the product range Third harmonic filters star and The size of the -filters is selected according to the supply transformer or back up fuses. The protection unit needs to be used, in case the dimensioning exceeds the thermal rating of the filter. The basis of dimensioning is that the filter withstands the Hz voltage and the fundamental neutral current generated by the phase unbalance. The star filters are tested according to the highest possible short circuit current or back up fuse. The filter is not suitable for applications including largely dimmer loads. Please consult with us. The filter is not suitable for applications including largely dimmer loads. Please consult with us. SA L L L () SA L L L Installation to the transformer star point, enclosed filters and system components,star The new generation third harmonic filter star is designed for small size and economical solutions to places, which are especially exposed by third harmonic currents. The filter can be installed outdoor in vicinity of transformer stations, as retrofitting to existing transformer station or as additional field of main switchboard. It is recommended to install the filter star in -conductor, whenever possible, equipped with appropriate protection unit S_. DIMESIOIG: According to the supply transformer PROTECTIO: Protection unit S_S, Hz and Hz measurement according to the mounting instruction etwork Rated current Transformer Enclosed Units System Input-Output Internal of the size components cable/ busbar connection to T-C, T-S transformer kva Indoor Outdoor IP the filter A IP IP ) SUS SA Acc. to phase % of phase SS SU + _S conductors conductor SA L L L () SA Acc. to phase % of phase SS SU + _S conductors conductor SA Acc. to phase % of phase SS SU + _S conductors conductor SSx SUx SAx Acc. to phase % of phase conductors conductor ote: System components in brochure S GB Installation for distribution boards in T-S-system, enclosed filter and system components, filters are designed in T-S-systems to provide selective mitigation of isolated groups with local or central compensation. The is normally installed in the load side neutral output of UPS-devise. is dimensioned according to the group fuses. In case the dimensioning is below % it is recommended to use additional protection unit. The filter types...v include guard units to keep track of the -current in the area of... A. DIMESIOIG: According to the group fuse- rated current = rated current of the fuse link PROTECTIO: Guard unit (_V), Hz measurement from -conductor of the group etwork Rated current Enclosed Units System Cross-section Internal parallel of the components Input-Output connection to T-S group fuse Indoor IP IP cable the filter A mm mm V B L L L V B V B x V B x LV + B x SA ote: System components in brochure S GB Low Voltage Products

6 I O Technical data Technical charasteristics of the star third harmonic filters Type SA SA SA System voltage V / / / Rated continuous thermal current Ith of the filter Resistance R mohm,,, Impedance Z Hz mohm Impedance Z Hz ohm,, Power loss with % phase balance - lamp load/w Power loss with % phase balance - PC-loadv Power loss with % inbalance current - lamp load/w Power loss with % inbalance current - PC-load/W Power loss worst case unbalance current - lamp load/w Power loss worst case unbalance current - PC-load/W VALUES WITH PROTECTIO UIT Transformer size with protection unit kva Rated current of transformer A Max harmonis voltage / V Hz V Max incoming fuse in phase at ka prospective short circuit A Max duration of short circuit s,,, Protection unit S_ S_ S_ Current transformer KOREF-/ KOREF-/ KOREF-/ VALUES WITHOUT PROTECTIO UIT ) Max incoming fuse in phase A Transformer size with kva ) Tested with worst case overcurrent, time A fuse by h Specification of harmonic filter Example star Type: S S Rated voltage: V Dimensioning according to the transformer size: kva. Removes the third harmonic current from the phase and neutral conductor. Dimensioning current/ Max continuous current: A/ A. Dimensioning voltage: V Hz. The filter allows subsequent increasing of the harmonic load without retrofitting. Short circuit dimensioning according to max. available short circuit of transformer. The filter is stand along type and not influencing on the power factor compensation. The filter is not influencing on carrier- wave-line. Main incoming breaker: Max. time delay:, s Terminations: Max six cables of mm The filter is equipped with by-pass switch for commisoning. Stand along enclosure: indoor use IP outdoor use IP Accommodation: In the vicinity of transformer station Retrofitting to the transformer station In the main switchboard SA FILTER BYBASS O OFF MS The star removes typically % of the third harmonic current from the whole network from line and load side independent of the magnitude of the third harmonic current. For example the neutral current reduces from A down to A and in the phase conductors from A to A. The same mitigation prevails in the whole network from the transformer windings to the lamps and computers. The magnetic field from the construction and earthing wiring reduces typically by % due to mitigation of the vagabonding currents (% of magnetic field usually of Hz origin). The iron, copper and resistance losses reduce the temperature and noise level of the supply transformer doubling the lifetime of the transformer by every degrees C. The filter reduces the resistance losses (I R). For example: before (A) x, Ω = W, filter installed (A) x, Ω =, W (other losses not included). The filter include protection unit, which limit the Hz unbalance current and Hz fault current. Low Voltage Products

7 Auto A A A A A A V~ /Hz SM V~ /Hz SM protective units The purpose of a protective unit is to limit a Hz voltage drop to the desired level to prevent overload of filter to protect the network if the unit is damaged SA Protective I > K Types of protective units:. Enclosed type, S - Complete type includes Amp-meter, all pilot lights and TEST-switch installed in an IP enclosure. - Contactor K and current transformer T must be ordered and connected separately. See connecting diagrams, page. /Hz Error Test R Reset OK ByPass /Hz /Hz /Hz Error. on-enclosed module, BS - The pilot lights, TEST-switch, RESET-pushbutton and Amp-meter must be ordered and connected separately as well as contactor K and current transformer T. See connecting diagrams, page. SA Test SA Strömberg Amp-meter (Included in enclosed type S) The Amp-meter is connected to the secondary circuit of the T current transformer. It is equipped with a %-scale where % indication corresponds to the nominal primary current of the T Current transformer. When the -filter is connected, the meter primarily indicates the Hz unbalance current which runs in the / wire. When the -filter is bypassed, the meter primarily indicates the third harmonic current. The pilot light functions Pilot light OK Test By Pass / / Error Error Hz Hz /Hz /Hz Description and the protective unit are O.K. The setting value of the /Hz unbalance current exceeded - by-passed The setting value of the. harmonic current exceeded - by-passed SA 'OK' -pilot light blown - switched O and protective unit is working A fuse in a protective unit is blown - switched O and a protective unit is not working Light is O Light is OFF Low Voltage Products

8 Connecting diagrams / Enclosed protective unit S L L L ~ V + + T S S () (L) () X K A A V~ F A K. K. K. K. K. K. K. K. K. K. K.A K. K.A X Protective unit S SA W x, W x, W x, ote: Connection of loads shall be between L-L and -conductors shall be made after installing point of the Third Harmonic Filter (). L L Redundant duplex supply of auxiliary voltage. SA O K K O Low Voltage Products

9 Connecting diagrams / Open type protective unit BS L L L ~ V + + H...H X V T S S X X P. X. x, X P. X. Door BY PASS OK X. X. X. P A H H X. H. X. ERROR /Hz /Hz ERROR /Hz /Hz X. X. X. X. H H H H H. RESET TEST X. X. S H S AUTO TEST S. S. X. X. X. X. X. X. X. X. X. Protective unit BS H. S. H. S. H. S. H. S. S. S. S. S. H. H. H. F A K V~ () (L) () K. K. K. K. K. K. K. K. K. K. K.A K. K.A X A A H. SA W x, W x, W x, ote: When mounting Amp-meter P, the connection between X. and X. must be disconnected. The connection of loads shall be between L-L and -conductors shall be made after installing point of the Third Harmonic Filter (). L L Redundant duplex supply of auxiliary voltage. SA O K K O Low Voltage Products

10 KORE I Auto A A A A A A V~ /Hz SM V~ /Hz SM V~ /Hz A A A A A A Third harmonic filters star and Ordering information Technical information Third harmonic filters star Components for installation to transformer star point. S Indoor use IP. Cabling from bottom or top Transformer size Dimensions Dimensions Type Order Weight [kva] [A] arrow combination Flat combination Code B x D x H [mm] B x D x H [mm] [kg] x x x x S A x x x x S A x x x x S A x x x x x x S Ax x H Third harmonic filters B D Installation in T-S system in the neutral conduction of the distribution panel SA SA THB V~ /Hz SM V~ /Hz SM Size of Connecting Dimensions Type Order Weight feeding cable (Cu) Code [A] [mm ] B x D x H [mm] [kg] Basic module (without a by-pass contactor K, see a table below), technical data at V x x B THBSMS Protection unit Back up Terminals Dimensions Protection Type Order Weight fuse [mm ] / B x D x H degree Code Cu [mm] [kg] Open type A. x x IP BS SCAR. x x BSMS SCAR. SA Enclosed A. x x IP S SCAR (Sheet steel) BS OK ByPass Other system components SA S /Hz Error Test R Reset Test /Hz /Hz /Hz Error Strömberg Transformer size Rated current Transformer By-pass contactor By-pass switch kva In/A/V KOREF / A OETLK KOREF / A OETLK KOREF / A OETLK KOREF / A OETLK KOREF / A OETLK KOREF / AF OETLK KOREF / AF OETLK KOREF / AF OETLK KOREF / AF OETLK SA KORE_ SA A_ V~ /Hz SA O O OFF l O SA OETL_ B Low Voltage Products

11 Installation examples T-S-system, where the original cabling to the transformer star point need to be displaced to fundamentally same position in the -conductor of the main switchboard. star installation. Transformer X L L L -S S Main switchboard L L L X SB Main earthing busbar Earthing electrode Concrete iron fitting Water meter T-C-S system Alternative installation examples when using star with protection unit(_s) or with guard unit(_v). Transformer L L L -S S Main switchboard L L L L L L ) -S S/ Distribution switchboard L L L SB -V -V Earthing busbar of transformer station Main earthing busbar Distribution swtichboard Earthing electrode Concrete iron fitting Water meter T-S system Alternative installation example when using star with protection unit(_s) or with guard unit(_v). Transformer L L L -S S Main switchboard LL L L L L ) -S S/ Distribution switchboard L L L SB -V -V Earthing busbar of transformer station Main earthing busbar Distribution swtichboard ) In this installation model, the current transformer need to measure both - and -current, unless additional guard unit is used. Earthing electrode Concrete iron fitting Water meter SA S Low Voltage Products

12 Installation examples Installation of on starpoint of a transformer SA A B L,L,L For the third harmonic current, -unit disconnects the -conductor. Bypassing of the third harmonic current through other routes should be avoided. Installation rules:. is intended for installation between points A and B. Earthing is allowed only after point B.. To ensure that no other earthing exists between point A and the starpoint, the insulation resistance Re between points A and B must be measured.. Re > kω (usually Re > MΩ). If there is a thin earthing wire between points A and the starpoint, all third harmonic currents in the -conductor without, (e.g. A) go through this wire. Risk of fire! Transformer and generator connected parallel D GE. Installation rules:. One is intended for installation between points A and B, and the other between points A and B. Earthing is allowed only after points B and B. Re > kω ( MΩ) between A-B and A-B Installation of the on a UPS-network SUPPLY ETWORK BATTERY Installation of the on UPS-network ~ = UPS L ~ = A B A B STATIC BYPASS SWITCH SA ote Generator with open pole rotor generates third harmonic current UPS ETWORK SA MAUAL BYPASS SWITCH L Installation of on starpoints of parallel connected transformers A B A B Installation rules:. One is intended for installation between points A and B, and the other unit between points A and B. Earthing is allowed only after points B and B. Re > kω ( MΩ) between points A-B and A-B. The protection unit should bypass both -units at the same time. The filter is not suitable for applications including largely dimmer loads. Please consult with us. Installation of one single on starpoint of parallel connected transformers A Installation rules:. is intended for installation between points A and B. Earthing is allowed only after point B. Re > kω ( MΩ) between points A and B SA SA B The filter is not suitable for applications including largely dimmer loads. Please consult with us. Low Voltage Products

13 Enclosed third harmonic filters star Dimensions SA arrow combination SA Flat combination SA SA Low Voltage Products

14 Enclosed third harmonic filters star Dimensions SA arrow combination SA SA SA Flat combination Low Voltage Products

15 Enclosed third harmonic filters star Dimensions SA arrow Combination SA SA SA Flat combination Low Voltage Products

16 The technical data and dimensions are valid at the time of printing. We reserve the right to subsequent alterations. Brochure SGB _ SCCC Oy Waasa Graphics, Vaasa ABB Oy Low Voltage Products P.O. Box FI- VAASA, Finland Telephone + Telefax + The operations of the manufacturing plant have been certified.