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October 2010INSULATION MONITORING RELAISindustrial applicationsfor use in medical roomse l e t t ro n i c awww.contrel.it
RI seriesINSULATION MONITORINGFOR ISOLATED NEUTRAL NETWORKS (IT)The RI isolation monitor series are designed to monitor isolated neutral networks (IT) level.First of all, IT networks are used where the continuityof service is important. For this kind of networks,insulation impedance is very high, so in case of leakage to earth, electric currents caused by a failureare very weak. This works in order to avoid the masses reaching a dangerous potential. If, in case ofinsulation leakage, it’s necessary stop the supply forisolated neutral networks to earth, for IT networks,this is not necessary, but the failure has to be pointed out, individuated and eliminated. The RI series, intheir different versions, constantly verify the insulation level and report failure’s condition.L1L2L3NZPELOADGENERALAPPLICATIONSIT networks are used where the continuity of service is a priority.For example, in these cases: Chemical and metallurgical industries, where a voltage’sinterruption implies serious economic loss Transmission systems and radio links Places at explosion and fire’s risk Mines Networks of emergency’s supply Generators or direct-current group networks of auxiliary supply and control railways Naval applications Rooms for medical use2PRODUCT SERIESThere are different versions of RI devices, in order to have specific functionalities available for every networks that has to bemonitored. There are also accessories functions: for example, prealarm threshold and display for visualising insulation, very usefulas supply for failure’s search.Measuring techniques are different for every model, in order tohave the right insulation available according to the network. Versions that measures the variation of two polarities’ potential to earth. Models RI-F48, RI-R48, RI-R11, RI-R11D, RI-R15belong to this category. These versions are apt for use in directcurrent networks, in auxiliary supply’s networks and in direct-current or alternate single phase networks. Versions that apply a measure’s signal in direct-current between network and earth sensing leakage current to earth so thatinsulation level could be measured. For every independent network, only one monitor could be used. Models RI-F22, RI-R22,RI-R38, RI-R60 belong to this category. These versions are right tobe used in auxiliary networks and in generic networks of distribution in alternate single and three phase, anyway without directcurrent components. Versions that apply a measure signal codified and varying inorder to allow a correct insulation measure independently fromunder-control network that has to be monitored. Strong distortionwith high harmonic components (sub harmonic) and direct-current components can cause measure’ problems to others techniques. Model RI-R50 belong to this category. This solution let usemonitoring devices in generic applications for networks in directcurrent and alternating single and three phase, with rectifiers,power’s electronics and variable-speed drive. Versions useful for testing insulation in out-voltage networkswhich use the same measuring technique -already cited- ofdirect-current signal applied in network, but in this case the netis out-voltage. This works in order to do a preventing monitoringof insulation’s level. It is very useful for equipments not permanently used, as well as motors, fire-engines and so on where insulation level could decrease because of humidity (condensation).This decreasing doesn’t let a normal functioning when they will beused. Model RI-SM belongs to this category. Versions for use in medical roomsModels HRI-R24 (tipically used for scialytic lamps) HRI-R22tHRI-R40 HRI-R40W belong to this category and got differentmeasuring techniques depending on the model either applying adirect-current signal and surveying electric leakage to earth orapplying a measuring signal codified and varying.Panels of remote signalling repeater PR and remote serial concentrator EML for network’s monitoring are available as accessories ofthis product. In the next page, there is a table with the descriptionof technical features for every kind of monitor with specific criterions of choosing in order to turn the user to the model more useful for his needs.
RI seriesINSULATION MONITORINGFOR ISOLATED NEUTRAL NETWORKS (IT)FUNCTIONS TABLEMODELNETWORKAUXILIARYUNDER CONTROL SUPPLYRI-F4824 - 48 Vac/dcRI-R4824 - 48 Vac/dcRI-R48N24 - 48 Vac/dcRI-R11 110RI-R11 TPUTTESTRESETread fromunder controlnetworkread fromunder controlnetworkread fromunder controlnetworkTRIP10 kohm fixedPotential variation Faultof polarities1 relais NO-C-NC LocalAutomaticTRIP10 50 kohmPotential variation Faultof polarities1 relais NO-C-NC LocalManual localTRIP10 60 kohmPotential variation Fault on /Lof polaritiesFault on -/N1 relais NO-C-NC LocalManual local80 110 Vdc185 275 Vdcread fromunder controlnetworkTRIP10 100 kohmALARM30 100 kohmPotential variation Fault on /Lof polaritiesFault on -/NAlarm on /LAlarm on -/NRI-R11D 110RI-R11D 22080 110 Vdc185 275 Vdcread fromunder controlnetworkTRIP10 100 kohmALARM30 100 kohmPotential variation Fault on /LFault on -/Nof polaritiesAlarm on /LRI-R15300 Vdc500 Vdc1.000 Vdcread fromunder controlnetworkTRIP 30 300 kohm Potential variation Fault on /LFault on -/Nof polaritiesAlarm on /LAlarm on -/N1 relais NO-C-NCfail safe functionmax 230 Vacmax 500 Vac(with adapter)max 230 Vacmax 500 Vac(with adapter)max 440 Vacmax 1000 Vac(with adapter)Upper limit1000 Vacwith RI-R38230 Vac115 Vac optTRIP100 kohm fixeddc signalFault1 relais NO-C-NC LocalAutomatic230 Vac115 Vac optTRIP25 100 kohmdc signalFault1 relais NO-C-NC LocalManual localand remote115-230 VacTRIP10 100 kohmdc signalFault1 relais NO-C-NC LocalManual localand remote230 Vac115 Vac opt------max 760 Vacmax 1000 Vac230 Vac115 Vacdc signalAlarm faultinsulationlevelAlarm1 relais NO-C-NCFoult1 relais NO-C-NCLocal and remoteLocal and remoteFault1 relais NO-C-NC LocalAlarm on -/NInsulation level(by LED bar)Alarm2 relais NO-C-NCfail safe functionFault2 relais NO-C-NCfail safe functionAlarm2 relais NO-C-NCfail safe functionFault2 relais NO-C-NCfail safe functionLocal and remoteAutomaticManual localand remoteLocal and remoteAutomaticManual localand remoteLocalpolo polo -AutomaticManual localand remotewith adapter ARI-R15RI-F22RI-R22RI-R38ARI-R100RI-R60with adapter ARI-R60RI-SMOut of voltageread fromunder controlnetworkTRIP0.1 10 Mohmdc signalHRI-R24max 24 Vacread fromunder controlnetworkTRIP10 50 kohmPotential variation Faultof polaritiesHRI-R24tmax 230 Vac230 Vac115 VacTRIP50 250 kohmdc signalHRI-R40max 230 Vac230 Vac115 VacTRIP50 500 kohmdc signalHRI-R40Wmax 230 Vac230 Vac115 VacTRIP50 500 kohmCodified andvariable signalFault forvisualizationinsulation levelby led barFault alarmdisplay 3 leddigit, min. valuememorizedFault alarmdisplay 3 leddigit, min. valuememorizedAutomatic1 relais NO-C-NC Local and remote, Manual localwith appropriateremote panels1 relais NO-C-NC Local and remote, Manual localwith appropriateremote panels1 relais NO-C-NC Local and remote, Manual localwith appropriateremote panels1 relais NO-C-NC Local and remote, Manual localwith appropriateremote panels3
RI-F48 seriesRI-R48 seriesRI-R48N seriesINSULATION MONITORINGVERSIONS FOR NETWORKS ac/dc MAX 48 VGENERALThe devices allow the insulation monitoring to earth of electric networks in alternate and direct-current till 48 V isolated (IT systems).They measure potential’s variation of two polarities on earth so thatprovide for a signal of insulation decreasing under a fixed level.Monitoring is carried out measuring potential’s variation of two polarities on earth.Auxiliary supply is taken from under-control network.There are different versions available: some, very cheap, with a fixedtripping threshold, others with possibility of adjustable calibration oftripping threshold and versions with indication of polarity (positive ornegative, phase or neutral) on which the failure took place.Devices have on frontal panel signal for activity ON, for tripping TRIP(low insulation), a test bottom, a reset bottom and a potentiometer (ormicro switches) for setting the threshold of tripping (only for versionswith adjustable ------------------fixed ----------------------------------adjustable ----------------------------------adjustable threshold, indication of broken down ----------------------------------FUNCTIONS AND OPERATORS - LEGEND789101171212RESETRESET301kΩ50TRIP ONTESTMONITOR45RESET4030201060 ---------Potentiometer/micro switches for insulation tripping setting(only for models RI-R48 and -----------------------Manual reset button(only for models RI-R48 and -----------------------Test button ---------------Signal of suppliedrelay ON (green -----------------------Signal for insulation’s threshold set reached(indication of broken down polarity for 34561112DIMENSIONSRI-R48N52,5RI-R48NRI-F48 RI-R48RI-R48 ORINGRESET307TRIP ONRI-R48NRESET6040302010TESTONINSULATIONMONITOR 564465
RI-F48 seriesRI-R48 seriesRI-R48N seriesINSULATION MONITORINGVERSIONS FOR NETWORK ac/dc MAX 48 VELECTRIC CHARACTERISTICSAuxiliary supply voltageSelf-consumptionNetwork voltage24 V or 48 V 50-60 Hz 20 % or dc 20 %3 VA MAX24 48 Vac/dc 10 %24 V MAX0.5 mA MAXMeasuring voltageMeasuring current100 kohmRI-R48adjustable 10 50 kohm by potentiometerRI-R48N adjustable 10 60 kohm by micro switchesfixed 10 kohmRI-F48about 1 secondled ON - led TRIPbuttons TEST and RESET (only model RI-R48 / RI-R48N)relay switch contact NO-C-NC MAX 5 A 250 Vac- 10 60 CInternal impedanceTripping thresholdTripping lateSignalling and operatorsOutputWorking temperature- 20 70 C 90 %Storing temperatureRelative humidityInsulation testAssembling positionConnection typeProtection's degreeMounting according with DIN 50022WeightStandard reference3 kV 60 sec / 4 kv imp. 1,2 / 50 µsindifferentby screw terminals - wire section MAX 4 mm2IP 40 frontal with cap - IP 20 caseeasy connection snap on DIN rail 35 mm / 3 modules of 17.5 mmapproximately 300 gCEI-EN 61010-1 / CEI-EN 61557-8 / VDE0413 part.8 / CEI-EN 61326-1WIRING DIAGRAMS - LEGENDRI-F48 / RI-R48 / RI-R48NVaux1AUX123456789AUX2 RESET TEST OUT-NC OUT-C OUT-NO PE10RESETPE INSULATED LINE max ---------------------------------AUXILIARY SUPPLY - TERMINALS 1-3Auxiliary supply could be taken from under-control -----------------------------INSULATION MONITORING - TERMINALS 1-9Terminals have to be connected between under-control networkand measure’s referring earth.Maximum voltage applicable between these terminals is 48 ----------------------CONNECTION OUTPUT RELAY - TERMINALS 6-7-8Connection for remote signal by relays with switch freefrom voltage, max 5 A 250 V on resistive --------------------------Eventual connection for automatic or remote RESET(only for models RI-R48 and RI-R48N), connect a button NCbetween terminals 4 and ------------------------Eventual connection for remote TEST(only for models RI-R48 and RI-R48N), connect a button NObetween terminal 5 and earth’s conductor ------------------------5
RI-R11 seriesRI-R11D seriesINSULATION MONITORINGVERSIONS FOR NETWORKS dc MAX 250 VGENERALThe devices allow permanent monitoring of insulation of electricalnetworks in direct-current current isolated on earth (IT networks).Monitoring is carried out measuring potential’s variation of two polarities of network on earth. Auxiliary supply is taken from under-controlnetwork.These devices have two trip thresholds, which are adjustable by frontal micro switches, called ALARM and TRIP. This works in order tosignal that insulation’s level decreased under the threshold. Trip issignalled by frontal LED with indication of polarity ( or -) that showlow insulation. Remote trip threshold is carried out by double switchtwo relays with contacts voltage-free. Relays could be programmed inpositive safe too (FAIL-SAFE function, normally excited). On the front,there are TEST and RESET buttons; test could be activated locally orby an external button; push button could be set manually or automatically, either with local button or with external push button.Model RI-R11D has a monitor of insulation’s level of the device by abar.MODELS------------------RI-R11 110 VRI-R11D 110 V------------------RI-R11 220 -----Main supply and auxiliary voltage 110 Vdc / -15% 25% (80 180 Vdc)Main supply and auxiliary voltage 110 Vdc / -15% 25% (80 180 ---------------------------------------Main supply and auxiliary voltage 220 Vdc /-15% 25% (185 275 ----------------------------------------FUNCTIONS AND OPERATORS - LEGEND19 20 21 22 23 24 25 26 2728 29 30 31 32 33 34 35 3619 20 21 22 23 24 25 26 2728 29 30 31 32 33 34 35 363Insulation monitor RI-R11RI-B3221300ON150 100805030F.S. on offauto manoffmanRESETRESETTRIPTRIP kΩkΩALARM kΩTESTTESTRESET60402010F.S. 11DInsulationmonitor23005 -concontrelntrel61RESETTRIPTRIP kΩkΩ150 100805030F.S. on offmanautoauto manoffmanON5kΩTRIP10kΩALARM20kΩ 50kΩ--100 kΩtotalonONkΩALARMALARM kΩTESTRESET60402010F.S. 91078910 11 12 13 14 15 16 17 1897123456878910 11 12 13 14 15 16 17 -RESET button. This works only if RESET functioning is set ------TEST button. Pushing TEST button cause either alarm activation or trip activation with output relays’ -------LED ON for active device -------LED TRIP for trip threshold TRIP -------LED ALARM for alarm threshold ALARM -------LED and LED- signalling which under-control network’s polarity has low insulation. Ignition of one of these LED will be connectedwith ALARM LED and TRIP ------Screw terminals for --------Micro switches for alarm threshold ----Micro switches for trip threshold ----Led bar for insulation level visualising (only for ------
RI-R11 seriesRI-R11D seriesINSULATION MONITORINGVERSIONS FOR NETWORKS dc MAX 250 VELECTRIC CHARACTERISTICS110 Vdc -15/ 25 % (80 180 Vdc)110 Vdc -15/ 25 % (80 180 Vdc)220 Vdc -15/ 25 % (185 275 Vdc)RI-R11 110 VRI-R11D 110 VRI-R11 220 VNetwork voltage and auxiliary supplySelf-consumptionAlternating residual loadALARM threshold setting5%300 30 kohm (5 levels adjustable by micro switches)5 W MAXTRIP threshold setting100 10 kohm (5 levels adjustable by micro switches)Signallingled ON, led ALARM, led TRIP, led , led signalling insulation led bar (only for RI-R11D)about 1 secondMAX 1.8 mARI-R11 / RI-R11D 110 V 200 kohm L /L- 100 kohm L/earthRI-R11 220 V400 kohm L /L- 200 kohm L/earthTripping delayMeasure's currentInternal impedanceALARM : 2 contacts switched NO-C-NCTRIP :2 contacts switched NO-C-NC5 A 250 Vac – 0.3 A 130 Vdc – 0.2 A 280 Vdc resistive load0.15 A 130 Vdc – 0.05 A 280 Vdc inductive load L/R 40 mswith 2 serial contacts: 0.7 A 130 Vdc – 0.5 A 280 Vdc resistive loadoutput alarm function - fail safe function for both outputsmanual or automatic reset (external reset)Output relay free from voltage contactsCapacity relay contactsAdjustable functionsWorking temperatureStoring temperatureRelative humidityInsulation testAssembling positionConnection type- 10 60 C- 20 70 C 90 %Protection's degreeMounting according with DIN 50022IP 40 frontal with cap - IP 20 caseeasy connection snap on DIN rail 35 mm / 6 modules of 17.5 mmWeightStandard referenceapproximately 400 gCEI-EN 61010-1 / CEI-EN 61557-8 / VDE 0413 part.8 / CEI-EN 61326-1indifferentby screw terminals - wire section MAX 2.5 mm2DIMENSIONS719 20 21 22 23 24 25 26 2728 29 30 31 32 33 34 35 36Insulation monitor RI-R11RI-B323009023150 100805030F.S. on offauto manoffmanRESETRESET1ONRESET45660402010F.S. onautoRESET789ALARM300-10 11 12 13 14 15 16 17 18ONALARMkΩALARM kΩTESToffmanRESETTRIPTRIP kΩkΩ150 100805030F.S. on offmanautoauto man concontrelntrel28 29 30 31 32 33 34 35 itorTRIPTRIP kΩkΩALARM kΩTESTTEST19 20 21 22 23 24 25 26 27RESET60402010F.S. Ω 50kΩ--100 kΩtotalontripononHOLD55kΩ 0 11 12 13 14 15 16 17 184468105RI-R11105RI-R11D73
RI-R11 seriesRI-R11D seriesINSULATION MONITORINGVERSIONS FOR NETWORKS dc MAX 250 VWIRING DIAGRAMS - LEGENDAA1-NO A1-C A1-NC192021 222324 25 26272829 30 31RI-R11 / RI-R11DVaux:V control1V 232 33A2-NO A2-C A2-NC343536output relay ALARMoutput relay ET1011 12 1314 15T1-NO T1-C T1-NC161718T2-NO T2-C T2-NCPE 8INSULATED NETWORK max 250 VdcLOAD------------------------- -----------------------------AUXILIARY SUPPLY AND UNDER-CONTROL NETWORK CONNECTION - TERMINALS 1-3.Positive and negative polarities of under-control network have to be connected to these terminals. Network’s voltage is used for device’s supply.If positive and negative has been inverted, the device would not be damaged but ( ) and (-- ) indications of frontal LED would be inverted too.The advice is that of making sure about the model with right functioning voltage.------------------------- -----------------------------CONNECTION TO EARTH - TERMINAL 5.Terminal has to be connected with protection conductor PE (earth) in order to allow insulation’s measure.------------------------- -----------------------------CONNECTION FOR REMOTE TEST - TERMINAL 7.In case of willing to foresee TEST function also from an external push button, it’s possible to connect a pushbutton with normally open contact NObetween this terminal and under-control network. If it’s connected to ( ) polarity, test will cause ALARM LED, TRIP LED and ( ) lighting; but if it’sconnected to (-- ) polarity, LED - will light.------------------------- -----------------------------CONNECTION FOR REMOTE RESET - TERMINAL 9.In case of willing to foresee RESET function also from an external push button, it’s possible to connect a pushbutton with normally open contact NObetween this terminal and (-- ) polarity of under-control network.------------------------- -----------------------------OUTPUT TERMINAL FOR TRIP RELAY - TERMINALS 12-13-14 16-17-18.In order to signal to exterior threshold TRIP activation, it’s available a relay with double change over contact voltage-free. The diagram shows contacts’ condition either with not supplied device or supplied at rest with FAIL SAFE function not active (relay normally not excited). If FAIL SAFE function is set, relay will be normally excited when there is not tripping (supplied device) and it will be back at rest in case of tripping, not supplieddevice or failure.------------------------- -----------------------------OUTPUT TERMINAL FOR ALARM RELAY - TERMINALS 30-31-32 34-35-36In order to signal trip threshold ALARM activation, it’s available a relay with double switch voltage-free. The diagram shows contacts’ condition eitherwith not supplied device or supplied at rest with FAIL SAFE function not active (relay normally not excited). If FAIL SAFE function is set, relay will benormally excited when there is not tripping (supplied device) and it will be back at rest in case of tripping, not supplied device or failure.------------------------- ------------------------------
RI-R15 SeriesDEVICE FOR PERMANENT INSULATION CONTROLVERSION FOR NEUTRAL NETWORKS (IT) UP TO 1000VDCGENERALThe RI-R15 device allows the permanent insulation monitoring toearth of electric networks in direct current isolated (IT systems).Insulation resistance monitoring is carried out measuring thepotential variation of two polarity on ground reference. Auxiliarysupply is taken from under-control network.The threshold of trip is regulated by a frontal potentiometer. Onthe frontal panel there is the signalling of device ON, and three redLED to signal the tripping (TRIP) and to indicate the polarity of theline under control that has low insulation. It’s available a changeover contact relay to use the low insulation signalling in a remote panel. The relay can be set as FAIL SAFE function. On front panelthere are a TEST and a RESET push-buttons. The test can be activated locally while the reset can be set in automatic or manual,with local or external push-button.MODELS------------------RI-R15 300VRI-R15 500VRI-R15 ower supply and network to control 300 Vdc (network 280 340 Vdc)power supply and network to control 500 Vdc (network 400 600 Vdc)power supply and network to control 1000 Vdc (network 600 1000 Vdc) including ARI-R15 external ---------------------------------FUNCTIONS AND OPERATORS - LEGEND119 20 21 22 23 24 25 26 27Insulation monitor relay RI-R15kΩ300TEST TEST-TRIP12345647823ON240-30180 100628 29 30 31 32 33 34 35 369RESET10 11 12 13 14 15 16 17 -----------------------------------------RESET push-button: this button is enabled to function only if is set themanual RESET. In this mode the instrument can come back in no alarmcondition only when the RESET push-button is pressed or in absenceof the power ------------------------------------TEST push-buttons: the trip relay commute when these buttons is pressed.The TEST button will simulate a low insulation on the positive pole:the LED TRIP and will turn on. The TEST- button will simulate alow insulation on the negative pole: the LED TRIP and - will turn --------------------------------LED ON: device --------------------------------LED and LED-: to signal the polarity that has the low insulation of thenetwork under control. The lighting on of one of these LED is linked to theTRIP ---------------------------------LED TRIP: to signal the trip insulation level under the set threshold ----------------------------------Potentiometer to set the trip --------------------------------------Terminal boards for the -----------------------------------------9
RI-R15 SeriesDEVICE FOR PERMANENT INSULATION CONTROLVERSION FOR NEUTRAL NETWORKS (IT) UP TO 1000VDCARI-R15 VOLTAGE ADAPTER FOR RI-R15 1000V28 29 30 31 32 33 34 35 3619 20 21 22 23 24 25 26 2728 29 30 31 32 33 34 35 36Insulation monitor relay RI-R15contrel100ARI-R15180240k300ONINSULATION MONITOR VOLTAGE ADAPTERmax 700/800/900/1000Vdc30contrel12345678910 11 12 13 14 15 16 17 181234TEST -19 20 21 22 23 24 25 26 27ARI-R15 adapter do not function with RI-R15 300 and 500V. The ARI-R15adapter is in a box for connection snap on DIN rail, 6 modules: The RI-R15 1000V version for network from 600 to 1000V must be usedonly with the ARI-R15 external adapter. This adapter must be positionedbetween the network to control and the control device RI-R15 1000V. TheTEST-TRIP56789RESET10 11 12 13 14 15 16 17 18ELECTRIC CHARACTERISTICSTIPOAuxiliary voltage supplyand voltage networkMaximum consumptionMeasure currentResidual alternateInternal impedanceTripping delaySignallingSetting TRIP thresholdRelay outputsRelay contacts10programmable functionsWorking temperaturestoring temperatureRelative humidityInsulation testMounting positionConnection typeProtection degreeMounting according DIN 50022WeightStandardsRI-R15 300VRI-R15 500VRI-R15 1000V (with ARI-R15)300 Vdcnetwork 280 340 Vdc500 Vdcnetwork 400 600 VdcMax 1000Vdcnetwork 600 1000Vdc3Wmax 1 mA5.5Wmax 1.5 mA10Wmax 2.5 mA5%800 kΩ L /L- 450 kΩ L/ground1.5 2.5 secondsled ON, led TRIP, led , led 30 300 kohm (using a potentiometer)TRIP: changeover contacts NO-C-NC5 A 250Vac – 0,3 A 130Vdc – 0,2 A 280Vdc resistive load0,15 A 130Vdc – 0,05 A 280 Vdc inductive load L/R 40 msfail safe function,manual or automatic reset (external reset)-10 60 C-20 70 C 95 %2,5 kV 60 sec. / 6 kV imp. 1,2/50µsanyBy screw terminals – wire section max 2.5 mm2IP 40 frontal with cover - IP 20 caseConnection snap on DIN rail 35mm / 6 modules of 17.5 mmabout 0,4 kg for RI-R15 / about 0.2 kg for ARI-R15safety EN 61010-1 / CEI 64.8 /electromagnetic compatibility EN 61326-1-2-4
RI-R15 SeriesDEVICE FOR PERMANENT INSULATION CONTROLVERSION FOR NEUTRAL NETWORKS (IT) UP TO 1000VDCDIMENSIONS90901055410573RI-R15 300V / RI-R15 500V WIRING CONNECTION - LEGENDV nnessione PEVaux: *20V control19INSULATION MONITORresetremotemanual9PE101112RES RES-relay outputTRIPFail Safefunction1314F.S. F.S.-15161718T-NCT-CT-NOPE INSULATED LINE ----------POWER SUPPLY AND NETWORK UNDER CONTROL CONNECTION / terminals 21-3 - At these terminals must be connected the negative and positivepole of the network to control. The same voltage must be used to supply the instrument. If the negative and positive pole are inverted, the instrument will not be damage but the indication of LED and LED- will be inverted. It’s necessary to verify the use of the instrument with correct supply -----------GROUND REFERENCE CONNECTION / terminals 27-9 - The terminals must be connected to the PE protection conductor (earth referring) to allowthe insulation ------------REMOTE TEST CONNECTION / AUTOMATIC RESET / terminal 11-12 - For RESET function from external push-button it’s necessary to connect anexternal N.O. contact push-button between these terminals. If these terminals are short-circuited the functioning of the reset will be automaticwhen
10 100 kohm ALARM 30 100 kohm Fault on /L Fault on -/N Alarm on /L Alarm on -/N Potential variation of polarities RI-R11D 110 RI-R11D 220 80 110 Vdc Local and remote 185 275 Vdc read from under c ontr l network Automatic Manual local and remote TRIP 10 100 kohm ALARM 30 100 kohm Fault on /L Fault on -/N A l arm on /L Alarm .
