Protection relays and transformers - Circutor

Protection and controlProtection relays andtransformers

Protection relays and transformersIntroduction ·······························································································3Product selection table· ···················································································6P.3 - Control relaysTBBeacon control relays· ··························································································7TB-3Beacon control relays· ··························································································9WICurrent detector control relays ···················································································11WDHHarmonics detector control relays· ················································································13CDR-8Current relay station ···························································································15P.5 - Protection transformersTRPProtection transformers encapsulated in resin ·······································································19TRMMeasurement transformers encapsulated in resin ····································································23P3/5-2

Protection relays and transformersProtection relays andtransformersCIRCUTOR offers a range of protectionrelays for different and specific applications.Many of these products havebeen designed in compliance with thecorresponding specifications, alwayscatering for the needs of our clients.P. 3/ 5Our range of products includes simple relaysthat are very easy to use, such ascurrent relays, or even protection relaysused to assemble cells in substations.We can highlight the following applicationsin this section:}}Beacon control relays}}Current control relays}}Harmonics relays}}Overload protection relays for substations.There is also a full range of currenttransformers, the TRP and TRM Series,encapsulated in resin, used in measurementand/or protection applications.Transformers with other power, ratio,accuracy, class, dimensional, etc. features,different from those described inthe following sections can be manufacturedon demand. This range of transformersexpands the offer of currenttransformers described in the Measurementsection.P3/5-3

Protection relays and transformersProtection transformersSelection table of the type of transformer, in accordance with the list of transformersbetween the nominal current of the primary (I p) and secondary (I s)5 000/54 000/5-3 000/52 500/52 000/51 500/51 000/5-800/5750/5700/5600/5500/5400/5-300/5250/5200/5-150/5125/5100/5-75/5TRM 30TRM 40TRM 60TRM 80TRM 100TRM 140TRM 180TRP 400TRP 40MEASUREMENT PROTECTIONTRP 60TRP 80TRP 100TRP 140TRP 180CIRCUTOR offers a complete range ofcurrent transformers encapsulated inresin. One of the advantages of this typeof transformers is that they increase thedegree of robustness (high mechanicalresistance, high electrical rigidity, tropicalization,etc.). In addition, this rangefully prevents the manipulation of thetransformer's core.There are two types of transformers:}}TRM: Measurement transformers encapsulatedin resin}}TRP: Protection transformers encapsulatedin resin.FeaturesPrimary currentSecondary currentFrequencyInsulation voltageHighest operatingvoltageThermal classThermal shortcircuitcurrentDynamic current75 ... 5000 A5 A (1 A on demand)50 ... 60 Hz3 kV0.72 kVacBI th= 60 I nI dyn= 2.5 I thSecondary terminalsSealableIndoorInstallationStandardsIEC 60044-1, UNE-EN 60044-1SelectionYou must know the following before choosingthe adequate transformer (measurementor protection):}}The application (measurement orprotection)}}Features of the work environment oroperating conditions (indoors or outdoors,maximum operating temperature, etc.)}}The features of the line where it willbe installed:• yCable or plate dimensions• yMeasurement margin of the current beingmeasured (maximum and minimum)• yOverload (range and time)• yGrid voltage (low, medium or high)• yShort-circuit current• yGrid frequency}}Features of the associated instrumentor relay (accuracy, nominal current,consumption, etc.)}}Distance between the transformerand instrument, as well as the section ofthe cable used for the connectionPower of the transformerThis is an important parameter. In thetransformer, the primary current mustinduce the necessary power in the secondarycurrent in order to transmit it toP3/5-4

Protection relays and transformersthe measurement unit. Induced powermust be equal to or more than the linelosses plus the power consumed by themeasurement equipment.Line losses, P L:Power losses due to the transmission ofcurrent through the cabling resistor R Lof the secondary cabling circuit of thetransformer.Factors that must be taken into account:}}Secondary current. P L= R L• I 2}}Cable diameter. R Lis inversely proportionalto the diameter square}}Cable length. R Lis proportional to thecabling length (both ways)in measurement transformers and at100% of the nominal power. In the caseof protection transformers, only at 100%of the nominal power.The transformer's response tosaturationA current transformer will become saturatedwhen its primary current or load areabove the nominal values. The linearityof the current transformation betweenthe primary and secondary decreases,so that the error can be quite high. Thesaturation of the transformer is inverselyproportional to the load, as shown onthe following figure. (Fig 1)The difference between current transformersused for measurement or protectionpurposes is the behaviour in theevent of an overload in the primary.TYPE 5P 10P± % Error for % I n± 1 ± 3for % I nCentiradians ± 1,8 ---Offset ±Minutes ± 60 ---Compound error 5 10In the case of protection transformersPrecision power:Is the apparent nominal power (V·A),with a specific power factor, which thecurrent transformer transmits to the secondarycircuit with the current assignedwhen it is connected with its nominalload, S(V·A) = Z s·I s2In accordance with the regulations, theinductive power factor is 0.8 for an apparentpower that is equal to or greaterthan 5 V·A. The power factor for smallerapparent power values is the unit.Accuracy of a transformerThe type of error in the transformeris established by the IEC 44-1. 25%In the case of measurement transformers,they are saturated by overloads inorder to make sure that the equipment isnot damaged from the secondary. In thecase of protection transformers, theyare not saturated until they reach a veryhigh current.A class 5P15 protection transformer willnot become saturated until the nominalcurrent passes 15 times through the primary.The transformers used for the measurementof the Safety Factor (FS) parametershow the number of primary currenttransmissions the transformer is capableof transferring to the measurementequipment.A: Nominal current zoneB: Overload zone forprotection transformersC: Maximum overload zone formeasurement transformers FS < 5BAC%05 x I pn1Fig. 1. Curve of the V·A measurementtransformerCurrent error3Measurementtransformer0,5 10P5 5P5Class curvesProtectiontransformerP3/5-5

Protection relays and transformersProduct selection tableEquipment Sub-division Application PageTBP3 Beacon control equipment 7TB-3P3 Beacon control equipment 9RVP3WDHP3 Harmonics relay 13WIP3 Current relay 11CDR-8P3 Earth leakage current station 15MPRBP4 Transformer overload protection relays 17TRPP5 Protection and measurement transformer 21TRMP5 Measurement transformers 25P3/5-6

Control relaysTBBeacon control relaysDescriptionFeaturesThe TB type Beacon control system is incharge of the supervision, control and indicationof anomalies detected in the differentBeacon components of the telephony transmissiontowers.TB / TB-55 Features:}}Control and measurement of the consumptionof the two sets of independentballasts(230 Vac power supply): the main circuitand the reserve circuit. The reserve circuitis connected when there is a fault in the maincircuit or when a lamp goes out.}}Control inputs of the two twilight photocellson the tower. When the light level is underthe threshold, an internal contact is closed(applying a 230 Vac voltage at the input of thephotocell of the TB), and the ballasts will beconnected. Said photocells are not suppliedwith the equipment and can be purchasedseparately.}}Alarms indicated with LEDs on the frontof the unit.}}Alarm signalling relay outputsApplicationDesigned to control and supervise the nightballasts on metallic antennae support structures,with a dual Beacon circuit (main and reserve),and to supervise the operation ofthe dual photocell circuit. Said ballasts willstart operating when the level of lighting isbelow a determined threshold, detectedby twilight cells.Power circuit:Voltage Single phase 230 Vac (± 25 %)FrequencyConsumption of the unitConsumption of the unit + BallastsBallastsMaximum number of ballasts(limited by power)Photocell inputNumber of inputs 250 ... 60 Hz5 V·A305 WType of input 230 Vac ± 20%Output relay features (alarm)Insulation voltage (U i)Thermal current I thMaximum switching voltageMechanical working lifeElectrical working lifeBuild features:Type of boxConnectionFixingDimensionsTB-55: 110 W main circuit + 110W reserveExample: Two 55 W ballasts or five22 W ballasts per circuitTB: 150 W main circuit + 150W reserveExample: Two 75 W ballasts per circuit250 Vac / 30 Vdc5 A1250 VA1 x 10 5 operations1 x 10 5 operationsModular, self-extinguishing plastic materialMetallic terminals for "posidriv" screwsDIN Rail 46277 (EN 50022)Optional fixing with screws(fixing drill hole Ø 4.2 mm)8 modules (140 x 70 x 110) inaccordance with DIN 43880Degree of protection Embedded relay : IP 41 / Terminals : IP 20Safety Category II, EN 61010Ambient conditionsOperating temperature -5 ... +55 ºCStandardsIEC 60255-5, EN 61010, EN 60664, EN 61000P3-7

Control relaysTBBeacon control relaysDimensionsReferencesDescription Type CodeBallasts 110 W (2 x 55 W)Control of 2 circuits: Main (Beacon) and reserve4 fault alarmrelays: Grid voltage, photocell, main and reserve circuit(The photocell is not included)Ballasts 150 W (2 x 75 W)Control of 2 circuits: Main (Beacon) and reserve4 fault alarmrelays: Grid voltage, photocell, main and reserve circuit(The photocell is not included)TB-55TBP30101P30104ConnectionsP3-8

Control relaysTB-3Beacon control relaysDescriptionFeaturesThe TB-3 type Beacon control system is incharge of the supervision, control and transmissionof anomalies detected in the differentBeacon components of the telephony transmissiontowers.TB-3 Features:}}Start-up control and measurement ofthe consumption of a single Beacon circuit:group of 1, 2 or 3 75W/230V or 15W/230Vaclamps.}}Inputs for a twilight photocell. The photocellwill be supplied with the unit and is connectedwith the corresponding terminals(+ and - inputs of the photocell).}}Adjustments of the TB-3• yPower of the 15 to 225 W lamp circuit.• yLight level between 200 and 1000 lux.}}Relay output used to signal alarms.ApplicationSimple unit used to control and supervise asimple Beacon circuit, in addition to the supervisionof the photocell's operation.Power supply circuitVoltage (A1-A2) 230 Vac (± 20 %)FrequencyConsumption of the unitConsumption of lampsBeacon lampsPower ratings50 ... 60 Hz5 V·AAccuracy ± 10 %Type of measurementLight levelScalesAccuracy ± 10 %Inputs and outputs225 W maximum15, 30, 45, 75, 150, 225 WTrue root mean squarePhotocell input Photocell (+) (-)200, 300, 400, 600, 800, 1000 IxBeacon lamp outputs Power supply: 230 Vac (± 20 %)Alarm relay outputInsulationDielectric rigidity (between thehousing and terminals)Build featuresType of boxConnectionFixingDimensionsNominal switching current: 0.5 AacNominal switching voltage: 200 VacInsulationvoltage between the coil and contacts: 2500 Vac2500 Vac, 50 Hz, 1 minModular, self-extinguishing plastic materialMetallic terminals for "posidriv" screwsDIN rail6 modulesDegree of protection Embedded relay : IP 41; Terminals: IP 20Ambient conditionsOperating temperature -10 ... +50 ºCStandardsIEC 255-5, UNE 801-2, UNE 801-3, UNE 801-4, UNE 60730-1P3-9

Control relaysTB-3Beacon control relaysDimensionsReferencesDescription Type CodePower can be programmed between 15 ... 225 WControl of 1 circuit (Beacon)Control of the light levelwith the photocell supplied with the unit.1 alarm relay to detect faults in the circuit or photocellTB-3P30102ConnectionsPHOTOCELLRED WIRE (+)BLACK WIRE (-)BEACON LAMPP3-10

Control relaysRV-M / RV-T / RV-TSVoltage detector control relayDescriptionFeaturesElectronic relay for protection and continuousvoltage monitoring.• yProtection against voltage surges, triggersat voltages higher than 265 V. Trigger time accordingto the voltage value less than or equalto:• y 300 V triggers after 3 s• y 350 V triggers after 800 ms• y 400 V triggers after 200 ms• yProtection against voltage drop, triggersat voltages less than 160 V. Fixed triggertime of 300 ms.• yError in phase sequence (incorrect phaseconnection order for RV-T. Fixed trigger time1 s.• yThe RV-TS type does not include phasesequence monitoring.• yActivation by external input (TRIGGER). Triggertime less than or equal to 10 ms.• yIndication LEDs for power supply and voltageerror.ApplicationThe RV relay range has been designed to provideprotection from disruption to the neutralconnection of electrical installations by measuringvoltages between phase in neutral. It maybe applied to both single phase (type RV-M)and three-phase installations RV-T / RV-TS).OperationVoltage measurementRelay triggering eventTrigger timeOutput relaysAssociated circuit breakerRemote ControlLED indicatorFeaturesOperation voltageOutput contactsTrue root mean square (TRMS)• Voltage surge, values above 265 V• Voltage drop, values less than 165 V• Phase sequence error• External input• Voltage surge, between 200 msand 3 s, according to voltage.• Voltage drop, 300 ms• Phase sequence error, 1 second• External input, less than 10 ms.• Transistor output, 24 Vcc• Switched NO/NC contact outputContactor or automatic circuit breaker using a coilNC voltage input, free of voltage• Power, power supply okay (led green)• Disconnection due to relay trigger150 ... 500 V ac between phase in neutral. 50/60 Hz250 Vac , 5 AOperating temperature - 20 ... + 65 ºCProtection levelBuild featuresInstallation category IIIFixing DIN Rail 46722 (EN 50022)DimensionsWeight1 module (18x85x73 mm)71 gDegree of protection IP 20Standards60947IEC 60755-2, IEC 62020, IEC 61008These voltage monitoring relays detect, accordingto the type used, incorrect phase sequence,phase loss, as well as voltage surges anddrops in a single module size unit suitable forboth industrial and modular cabinets. Measurementusing true root mean squareP3-11

Control relaysRV-M / RV-T / RV-TSVoltage detector control relayDimensionsApplicable installation Voltage surge Voltage drop Phase sequence Type Codesingle phase X X RV-M P30701three-phase (4 wire) X X X RV-T P30702three-phase (4 wire) X X RV-TS P30704ConnectionsEsquema en instalaciones trifásicas mas neutroControla la secuencia de fasesEsquema en instalaciones monofásicasP3-12

Control relaysWICurrent detector control relayDescriptionFeaturesThe WI current detectors are electronic deviceswith an output relay that is connectedor disconnected, in accordance with the levelof current detected in the circuit.}}The trip level is adjusted with the potentiometeron the front of the unit.}}The reset process is automatic with currentsunder 10% of the trip level (Hysteresis).}}Delay: the connection and disconnectiontimes of the output relay can be adjusted separately.}}Measurement of the current, dependingon the type:• yWith built-in current transformer (net diameter∅ 25 mm)• ySeparate transformer, input.../5 AacApplicationWIs can be used in any application thatneeds to control the load:Power supply circuitVoltage* 230 Vac (-15 ... +10 %)Frequency*Consumption50 Hz2 VATesting voltages between the circuits and the gridMeasurement circuitRelay contactsOutput relayInsulation voltage (U i)Thermal current I thInterrupting powerBuild featuresFixingDimensionsWeight2,500 V1,500 V250 Vac5 A(10 5 operations)with resistive load U e/I e: 240 Vac / 3.2 Awith inductive load U e/I e: 240 Vac / 0.8 A30 Vdc / 1.6 ADIN rail4 modules250 gDegree of protection IP 41Operating temperatureStandards0 ... +50 º CIEC 605, IEC 1010-1, EN 61010-1, EN 50 081, EN 50 082, IEC255, UL 94, UNE 20 607, UNE 21 136, VDE 0110(*) Other voltages and frequencies on demand.}}Power supply units for grinders or aggregategrinding units.}}Loads in extrusion machines}}Pump control}}Load on motors, etc.P3-13

Control relaysWICurrent detector control relayDimensionsReferencesTrigger time (adjustable) Adjustment margin (adjustable) Type Code0.5 ... 30 s 0.5 ... 5 A WI / 005-30 P320110.5 ... 30 s 1 ... 10 A WI / 010-30 P320120.5 ... 30 s 2 ... 20 A WI / 020-30 P320130.5 ... 30 s 5 ... 50 A WI / 050-30 P320140.5 ... 30 s 10 ... 100 A WI / 0100-30 P320150.5 ... 30 s s / transformer ... / 5 A WI / TS P32010ConnectionsWith separate transformerWith built-in transformerTITICurrent Current to control to controlCurrent Current to control to controlS1S1S2S2A1A118 16 18 16A1A118 16 18 16Power Power supply supply230 Vac 230 VacPower Power supply supply230 Vac 230 VacB1 B2B1 B215A215A215A215A2P3-14

Control relaysWDHHarmonics detector control relayDescriptionFeaturesWDH harmonics detectors are electronicdevices with an output relay that is connectedwhen the harmonics current levelmeasured in the circuit exceeds a thresholdthat can be adjusted.}}It monitors and acts in accordance withthe true root mean square of the total harmoniccurrent in a phase. The trigger levelis adjusted with the potentiometer on thefront of the unit.}}Delay: the output relay activation time canbe adjusted (up to 30 s).}}The reset process is automatic with currentsunder 10% of the trip level (Hysteresis).}}Current measurement, depending on thetype:• yWith built-in current transformer (net diameter∅ 25 mm)• ySeparate transformer, input.../5 AacApplicationThe WDH current detectors are mainly usedto protect transformers, capacitor banks, etc. Ingeneral, any receiver subject to harmonicoverloadsPower supply circuitVoltage* 230 Vac (-15 ... +10 %)Frequency*Consumption50 Hz2 VATesting voltages between the circuits and the gridMeasurement circuitRelay contactsOutput relayInsulation voltage (U i)Thermal current I thInterrupting powerBuild featuresFixingDimensionsWeight2,500 V1,500 V250 Vac5 A(10 5 operations)with resistive load U e/I e: 240 Vac / 3.2 Awith inductive load U e/I e: 240 Vac / 0.8 A30 Vdc / 1.6 ADIN rail4 modules250 gDegree of protection IP 41Operating temperatureStandards0 ... +50 º CIEC 605, IEC 1010-1, EN 61010-1, EN 50 081, EN 50 082, IEC255, UL 94, UNE 20 607, UNE 21 136, VDE 0110(*) Other voltages and frequencies on demand.P3-15

Control relaysWDHHarmonics detector control relayDimensionsReferencesTrigger time (adjustable) Nominal current I nType Code0.5 ... 30 s 10 A WDH / 010-30 P320220.5 ... 30 s 20 A WDH / 020-30 P320230.5 ... 30 s 50 A WDH / 050-30 P320240.5 ... 30 s s / transformer ... / 5 A WDH / TS P32020ConnectionsWith separate transformerWith built-in transformerTITICurrent Current to control to controlCurrent Current to control to controlS1S1S2S2A1A118 16 18 16A1A118 16 18 16Power Power supply supply230 V 230 VPower Power supply supply230 V 230 VB1 B2 B1 B215A2 15A215A2 15A2P3-16

Control relaysCDR-8Current relay stationDescriptionFeaturesThe CDR-8 unit measures, calculates anddisplays the current of 8 independent channels.Each channel can be configured as anearth leakage or current relay. It measuresthe true root mean square, taking decisionsabout the operations being carried out. It canwork as a maximum or minimum current relayor as an earth leakage relay.The CDR-8 can show the earth leakage currentand status of the operations relay of eachof the 8 channels on an LCD display.ApplicationThis unit can be used to measure and controlthe current of up to 8 lines, with a set of reduceddimensionsPower supplyAuxiliary power supply 230 Vac (-15 ... +20 %)Output contactsNumber of channels 8Class in earth leakage modeConfigurable contact NO/NC 250 Vac, 5 AA (superimmunized)Measurement True root mean square. Accuracy: 5 %Current threshold / SensitivityDelayEarth leakage transformerTest and ResetAssociated circuit breakerAutomatic reclosingWith transformer, WG Series: Programmable 0.03...6 AWith transformer, WGP Series: Programmable 0.3..0.60 AInverse curve: instantaneous or selectiveTime defined: 0,1 ... 10 sExternal, WG/WGPWith keysMinimum coil or emission tripNumber of earth leakage reclosures Programmable: 0 ... 10Time between reclosuresPartial counter reset timeRelay signalingLEDDisplayRemote signaling (Outputs)ContactsCommunicationsCircuit breaker controlOutput contactsAmbient conditionsProgrammable: 1 ... 900 sDouble the reclosing timeOperating temperature -10 ... +50 ºCBuild featuresFixingDimensionsTrip LED, permanent: Protection triggerTrip LED, flashing: Pre-alarmCPU LED: Indicates the presence of voltageEd LED: Interlocked earth leakage reclosingRd LED: Self-reclosing enabledComm LED: Relay communications through RS-485Indicator of the level of current in each channelIndicator of the status of each channel (ON-OFF)Configurable output NO/NC for the pre-alarm indicatorRS-485. PowerStudio supervisionand remote control SoftwareConfigurable contact NO/NC 250 Vac, 5 ADIN rail8 modulesP3-17