Fault Indicator Prod Guide - TNB
Product GuideProtection and ControlVOLTAGE AND FAULT INDICATORS Advanced AccQTrip Design Improves Accuracy,Performance and Reliability 5kV thru 35kV Rated for Underground and OverheadSystem Applications Easily Installed Test Point or Cable Clamp Mounting Styles Compact, Sealed, Corrosion Resistant ConstructionWith Provision for Hotstick Installation and Operation Accurate Voltage and Phase Indicators Fault Indicators Include Choice of:– Voltage or Time Reset– Mechanical Flag or Flashing LED Display Units are Self Powered and Feature Automatic Trip andReset Functions Exceeds ANSI/IEEE 495-1986
VOLTAGE AND FAULT INDICATORSProtection and Control ProductsNowadays electric power underground distribution systems demandhigh performance in the form of improved reliability, improved powerquality, reduced operational and maintenance costs, and flexibilityof operation. These can be accomplished by sectionalizing feeders,installing equipment with minimal maintenance/installation costs,installing protection and/or automatic source transfer equipment, andproviding ways to monitor the system and quickly locate a fault.Thomas & Betts’ Elastimold Voltage and Fault Indicators aidin the location and isolation of the faulted cable or equipment inoverhead and underground distribution systems through 35kV. Thisproduct guide details the different types of faulted circuit indicators,voltage indicators, and phase indicators. With a complete line ofelbow test point mount and cable mount indicators, you will find thebest product to meet your system’s performance needs.BLOWN FUSEAT RISER POLECABLEFAULTOPENPOINTT1T2T3T4T5T6T7UNDERGROUND LOOP CIRCUIT WITH ELBOW CONNECTED TRANSFORMERS T1 THRU T7FAULTED CIRCUITUNFAULTED CIRCUITINDICATOR SHOWINGFAULTED CIRCUIT DISPLAYINDICATOR SHOWINGNORMAL CIRCUIT DISPLAYFault Indicators reduce outage duration by quicklypinpointing the location of the fault. As shown in thecircuit diagram, the fault is located between the lasttripped indicator and the first untripped indicator.Once identified, this section is switched to becomethe new open point, allowing full service restorationto the rest of the customers during repairs.FEATUREBENEFIT/DESCRIPTIONAccQTrip “Off The Trip”Logic CircuitryPrevents false tripping due to transient current surges or system overloading.AccQClamp Self AdjustingMounting ProvisionNo need for customer to specify cable O.D. when ordering cable mount FCI’s. The AccQClamp maintains 10% trip accuracy over the entire clamping range (.4”-2.2”), and is composed of U.V.stable polycarbonate, stainless steel reinforced materials.Voltage and/or TimeReset Fault IndicatorsEliminates false resetting and false tripping associated with current (reset) dependent FCI’s. Idealfor use on lightly loaded circuits where sufficient current may not be available to reliably energizea current reset type fault indicator. Automatic reset upon restoration of system voltage and/or timereset after 4 hours.High/Low TripSetting SelectionCoordinates FCI’s with current limiting fuses. No minimum load current requirements and no loadsurveys needed.Inrush Restraint CircuitryCoordinates FCI’s with circuit breaker or auto reclosure operation, avoiding mis-indication due toinrush currents.Internal AdjacentPhase ShieldingPrevents electro-magnetic interference from adjacent phase conductors.1 mSec. Trip Response TimeCoordinates FCI’s with current limiting fuses, and other protective devices.Universal StyleFault IndicatorsReduces part numbers and inventory, simplifying the application and ordering process.Quality ManufacturingProcessesManufactured using state-of-the-art surface mount technology, and premium quality electroniccomponents, for the highest degree of performance and reliability. All fault indicators meet orexceed ANSI/IEEE Standard 495-1986.2
AccQTrip LOGIC OPERATIONFaulted Circuit Operationt1 – Fault Indicator is connected to the system andpowers up. At 5kV, this takes 3 min. in the case of thetest point mounted unit, and 6 min. in the case of theoverhead type unit. At higher voltages the power up timeis shorter.t2 – Fault current is detected. Fault Indicator is Armedafter 1ms. Fault Indicator display shows Normal.t3 – Breaker/recloser trips open and voltage drops.t4 – Voltage is lost. A 30 second time window allows forthe protective device to clear the fault, and reclose. If thefault persists the Fault Indicator shows Fault.Inrush Restraint Operationt1 – Fault Indicator is connected to the system andpowers up. At 5kV, this takes 3 min. in the case of thetest point mounted unit, and 6 min. in the case of theoverhead type unit. At higher voltages the power up timeis shorter.t1 - t2 – Upline recloser / breaker operation due to faulton another phase. After 100ms (t2) the Fault Indicator isdisabled because there is no fault current detected.t3 – Recloser closes back. Voltage is back to normal.Unfaulted phases see Inrush. No change in Fault Indicator.Overloading Operationt1 – Fault Indicator is connected to the system andpowers up. At 5kV, this takes 3 min. in the case of thetest point mounted unit, and 6 min. in the case of theoverhead type unit. At higher voltages the power up timeis shorter.t2 – Device downline from Fault Indicator switchescreating an overload. Fault Indicator is Armed after 1ms.Fault Indicator display shows Normal.t3 – More than 100ms without voltage loss. Fault Indicatordoes not change state.t4 – After 30 sec. Fault Indicator goes back to initializedstate.3
TEST POINT MOUNTED FAULT INDICATORSTPM SeriesStandard FeaturesnAccQTrip Logic Circuitry Prevents false indications due to inrushcurrents, cold load pickup, and overloadingnHigh/Low Trip Setting Selection No minimum load currentrequirement, and no load surveys needed.nInrush Restraint Avoids misindicationnInternal Magnetic Shielding Prevents adjacent phase effectsnTrip Response .001 Seconds Coordinates with current limitingfuses, as well as other protection devicesnMagnetically Latched Flag Indication Flag Indication will notchange state due to shock or vibrationnLight Weight, Compact and SealedModel TPMVFTPMTest Point Mounted Fault Indicators provide a clear, visual means forlocating faulted cables and equipment on underground distributionsystems. Indicators are self-powered and consist of a solid statecurrent sensor connected to a faulted circuit display. Designsincorporate advanced circuit logic, monitoring system protectionoperation and preventing indicator tripping unless an overcurrentcondition is followed by a loss of system voltage. Trip and resetoperations are automatic and the same indicator may be used for 5KVthru 35KV applications.Units are designed to mount directly to 200 & 600 Amp elbows, splicesand other cable accessory components equipped with IEEE 386Standard capacitive test points. Indicators include a universalmounting provision allowing installation on test point products asmanufactured by Elastimold and others.Model TPMVLTest PointDesigns feature compact, shielded and sealed, corrosion resistantconstruction. The indicator is enclosed in a rugged, impact resistantLexan housing and includes an EPDM molded rubber, test pointmounting boot. A built-in pulling eye allows for easy hotstickinstallation and removal of the indicator from the test point.Provisionfor HotstickInstallationand RemovalBasic OperationA faulted circuit produces an associated magnetic field which closesa reed switch in the indicator resulting in a tripped display. Tripresponse occurs in .001 seconds allowing the fault indicator toproperly coordinate with all types of circuit protection schemesincluding current limiting fuses.To eliminate confusing false trips, indicators are equipped with inrush,overload and cold load pick up restraint circuitry as standard. Currentsensors are constructed with internal shielding to prevent inadvertenttripping when located in close proximity to adjacent phases, such asjunction mounted applications.4Faulted CircuitDisplayTest PointMounting Provision
TEST POINT MOUNTED FAULT INDICATORSTPM SeriesSpecifications for TPM Voltage Reset, Flag Display: Model TPMVFNominal Trip RatingsResponse TimeSensor Indication Time Delay 1Maximum Surge LevelEffect of Adjacent PhaseInrush Restraint ResponseLoad Current RequirementsDisplay TypeMinimum Reset VoltageVoltage Reset TimePower SourceTemperature RangeHousing MaterialWeightLow, 400 Amp; High, 800 Amp1mS.001--30 Sec. Subsequent To Arming25kA 10 Cycles 60 HzInternal Shielding Prevents Adjacent Phase Effects100mS (Disable Delay)NoneMechanical Flag5KV (Beginning Initializing Sequence)3 Minutes @ 5KVVolt Test Point Powered-40ºC To 85ºCMounting Boot--EPDM Conductive RubberHousing Body--UV StabilizedPolycarbonate Polymer258 GramsSpecifications for TPM Voltage Reset, LED Display: Model TPMVLNominal Trip RatingsTrip Response TimeFault Clearing Time 1Maximum Surge LevelEffect of Adjacent PhaseInrush Restraint ResponseLoad Current RequirementsPower Up RequirementDisplay TypeFlash RateLED Display TimeVoltage Reset TimePower Source 3Battery CapacityBattery Operating LifeBattery Storage LifeTemperature RangeHousing MaterialWeightLow, 400 Amp; High, 800 Amp1mS.001--30 Sec. Subsequent To Arming25kA 10 Cycles 60 HzInternal Shielding Prevents Adjacent Phase Effects100mS (Disable Delay)None3 Minutes @ 5kVFlashing Super Bright LED30 Flashes per Minute4 Hour--Standard3 Minutes @ 5kV3.6 volt Lithium Thyonil Chloride Cell2.4 Ah1200 Flash Hours Minimum15-20 Years-40ºC To 85ºCMounting Boot--EPDM Conductive RubberHousing Body--UV StabilizedPolycarbonate Polymer258 GramsDIMENSIONSSpecifications for TPM Time Reset, LED Display: Model TPMTL 2Nominal Trip RatingsTrip Response TimeMaximum Surge LevelEffect of Adjacent PhasePower Up RequirementDisplay TypeFlash RateReset TimePower Source 3Battery CapacityBattery Operating LifeBattery Storage LifeTemperature RangeHousing MaterialWeightLow, 400 Amp; High, 800 Amp1mS25ka 10 Cycles 60 HzInternal Shielding Prevents Adjacent Phase EffectsNoneFlashing Super Bright LED30 Flashes per Minute4 Hour--Standard3.6 volt Lithium Thyonil Chloride Cell2.4 Ah1200 Flash Hours Minimum15-20 Years-40ºC To 85ºCMounting Boot--EPDM Conductive RubberHousing Body--UV StabilizedPolycarbonate Polymer258 GramsFootnotes1) Prevents false trips due to short time interruptions without loss of voltage.2) Inrush restraint is standard on voltage reset models. It is not available on time reset models.3) Cell powers LED and it is active only when LED is ON. Lithium Thyonil Chloride Cells provide accurate indication throughout the entire temperature range.5
URD CABLE MOUNTED FAULT INDICATORSUCM SeriesStandard FeaturesnAccQClamp Mounting Provision Universal one-size-fits-alldesign automatically adjustsnHigh/Low Trip Setting Selection No minimum load currentrequirement, and no load surveys needed.nTrip Response .001 Seconds Coordinates with current limitingfuses, as well as other protection devicesnInternal Magnetic Shielding Prevents adjacent phase effectsURD Cable Mounted Fault Indicators aid in locating faulted cablesand equipment on underground distribution systems. Indicators areself powered and consist of a solid state current sensor connected tofaulted circuit display.Units are designed for direct installation to an underground powercable using a spring loaded, over center toggle clamp mountingprovision. The clamp accommodates cables ranging from .4 to 2.2inches in diameter and includes retainer pads to prevent slip and twist.The clamp positions the cable conductor at a constant distance fromthe current sensor, maintaining indicator trip accuracy over the entirerange of cable sizes.Model UCMTLUCMDesigns feature compact, shielded and sealed, corrosion resistantconstruction. The indicator is enclosed in a durable, impact resistantLexan housing and includes a built-in pulling eye for easy hotstickinstallation and removal from the cable.Basic OperationA faulted circuit produces an associated magnetic field which closesa reed switch in the indicator resulting in a tripped display. Tripresponse occurs in .001 seconds allowing the fault indicator to properlycoordinate with all types of circuit protection schemes includingcurrent limiting fuses.URD Cable Mounted Fault Indicators are constructed with aninternally shielded current sensor that prevents inadvertent trippingwhen located in close proximity to adjacent phases, such as junctionmounted applications.Provision for HotstickInstallation andRemovalSpring LoadedMounting ClampsFaulted Circuit Display6
URD CABLE MOUNTED FAULT INDICATORSUCM SeriesSpecifications for UCM Time Reset, LED Display: Model UCMTLNominal Trip RatingsTrip Response TimeMaximum Surge LevelEffect of Adjacent PhaseDisplay TypeFlash RateReset TimePower Source1Battery CapacityBattery Operating LifeBattery Storage LifeTemperature RangeHousing MaterialLow, 400 Amp; High, 800 Amp1mS25ka 10 Cycles 60 HzInternal Shielding Prevents Adjacent Phase EffectsFlashing Super Bright LED30 Flashes per Minute4 Hour--Standard3.6 volt Lithium Thyonil Chloride Cell2.4 Ah1,200 Flash Hours Minimum15-20 Years-40ºC To 85ºCMounting Boot--EPDM Conductive RubberHousing Body--UV StabilizedPolycarbonate Polymer258 GramsWeightTime/Current Curve for UCM, TLFootnote1) Cell powers LED and it is active only when LED is ON. Lithium Thyonil Chloride Cellsprovide accurate indication throughout the entire temperature range.TYPICAL INSTALLATIONAs shown below, proper installation of URD Cable Mounted Fault Indicatorsrequires routing cable neutral wires to prevent the ground return from affectingtrip accuracy. Similar procedures should be followed for tape, wire, LC or othertypes of shielded cable constructions.Install Fault Indicator in Area Shown***DIMENSIONS*Fig. 1RecommendedFig. 2Fig. 3Fig. 4INCORRECTDo not install indicator directly over the concentricneutral to avoid misindication (Fig. 4)7
OVERHEAD LINE MOUNTED FAULT INDICATORSOLM SeriesStandard FeaturesnAccQTrip Logic Circuitry Prevents false indications due to inrushcurrents, cold load pickup, and overloadingnAccQClamp Mounting Provision Universal one-size-fits-alldesign automatically adjustsnHigh/Low Trip Setting Selection No minimum load currentrequirement, and no load surveys needednTrip Response .001 Seconds Coordinates with current limitingfuses, as well as other protection devicesnInternal Magnetic Shielding Prevents adjacent phase effectsnMagnetically Latched Flag Indication Flag Indication will notchange states due to shock or vibrationnLight Weight, Compact and SealedOverhead Line Fault Indicators aid in locating faulted circuits andequipment on overhead distribution systems. Indicators are selfpowered and consist of a solid state current sensor connected to a faultedcircuit display. Designs incorporate advanced circuit logic, monitoringsystem protection operation and prevent indicator tripping unless anovercurrent condition is followed by a loss of system voltage. Trip andreset operations are automatic and the same indicator may be used for5KV thru 35KV applications.Model OLMVFOLMModel OLMVLUnits are designed for direct installation to the overhead line using aspring loaded, over center, toggle clamp mounting provision. The clampaccommodates conductors ranging from .4 to 2.2 inches in diameter andincludes retainer pads to prevent slip and twist. The clamp positions theconductor at a constant distance from the current sensor, maintainingindicator trip accuracy over the entire range of conductors.Designs are compact, sealed and corrosion resistant.Basic OperationA faulted circuit produces an associated magnetic field which closesa reed switch in the indicator resulting in a tripped display. Tripresponse occurs in .001 seconds allowing the fault indicator toproperly coordinate with all types of circuit protection schemesincluding current limiting fuses.To eliminate confusing false trips, indicators are equipped with inrush,overload and cold load pick up restraint circuitry as standard. Currentsensors are constructed with internal shielding to prevent inadvertenttripping when located in close proximity to adjacent phases.8Provision for HotstickInstallation and RemovalSpring LoadedMounting ClampsModel OLMTLFaulted Circuit Display
OVERHEAD LINE MOUNTED FAULT INDICATORSOLM SeriesSpecifications for OLM Voltage Reset, Flag Display: Model OLMVFNominal Trip RatingsTrip Response TimeFault Clearing Time 1Maximum Surge LevelEffect of Adjacent PhaseInrush Restraint ResponseLoad Current RequirementsDisplay TypeMinimum Reset VoltageVoltage Reset TimeTemperature RangeHousing MaterialWeightTime/Current Curve for OLMVF, VL, TLLow, 400 Amp; High, 800 Amp1mS.001--30 Sec. Subsequent To Arming25kA 10 Cycles 60 HzInternal Shielding Prevents Adjacent Phase Effects100mSNoneMechanical Flag5KV6 Minutes @ 5KV-40ºC To 85ºCMounting Boot--EPDM Conductive RubberHousing Body--UV StabilizedPolycarbonate Polymer258 GramsSpecifications for OLM Voltage Reset, LED Display: Model OLMVLNominal Trip RatingsTrip Response TimeFault Clearing Time 1Maximum Surge LevelEffect of Adjacent PhaseInrush Restraint ResponseLoad Current RequirementsDisplay TypeFlash RateLED Display TimeVoltage Reset TimePower Source 3Battery CapacityBattery Operating LifeBattery Storage LifeTemperature RangeHousing MaterialWeightLow, 400 Amp; High, 800 Amp1mS.001--30 Sec. Subsequent To Arming25kA 10 Cycles 60 HzInternal Shielding Prevents Adjacent Phase Effects100mSNoneFlashing Super Bright LED30 Flashes per Minute4 Hour--Standard6 Minutes @ 5kV3.6 volt Lithium Thyonil Chloride Cell2.4 Ah1,200 Flash Hours Minimum15-20 Years-40ºC To 85ºCMounting Boot--EPDM Conductive RubberHousing Body--UV StabilizedPolycarbonate Polymer258 GramsDIMENSIONSSpecifications for OLM Time Reset, LED Display: Model OLMTL 2Nominal Trip RatingsTrip Response TimeMaximum Surge LevelEffect of Adjacent PhasePower Up RequirementDisplay TypeFlash RateReset TimePower Source 3Battery CapacityBattery Operating LifeBattery Storage LifeTemperature RangeHousing MaterialWeightLow, 400 Amp; High, 800 Amp1mS25ka 10 Cycles 60 HzInternal Shielding Prevents Adjacent Phase EffectsNoneFlashing Super Bright LED30 Flashes per Minute4 Hour--Standard3.6 volt Lithium Thyonil Chloride Cell2.4 Ah1200 Flash Hours Minimum15-20 Years-40ºC To 85ºCMounting Boot--EPDM Conductive RubberHousing Body--UV StabilizedPolycarbonate Polymer258 GramsFault IndicatorsFootnotes1) Prevents false trips due to short time interruptions without loss of voltage.2) Inrush restraint is standard on voltage reset models. It is not available on time reset models.3) Cell powers LED and it is active only when LED is ON. Lithium Thyonil Chloride Cells provide accurate indication throughout the entire temperature range.9
TEST POINT MOUNTED NEON VOLTAGE INDICATORSV2 SeriesTest Point Mounted Neon Voltage Indicators provide a convenient, visualmethod for determining the energized status of underground distributioncircuits. The indicator consists of a self-powered voltage sensor connected to aneon light that flashes when energized. Flash rate is proportional to the systemvoltage and the same indicator may be used for 5KV thru 35KV applications.Units are designed to mount directly to 200 & 600 Amp elbows, splices andother cable accessory components equipped with IEEE 386 Standard capacitivetest points. Indicators include a universal mounting provision allowinginstallation on test point products as manufactured by Elastimold and others.Designs feature compact, shielded and sealed, corrosion resistant construction.The indicator is enclosed in a durable EPDM molded rubber housing andincludes a built-in pulling eye for easy hotstick installation and removal of theindicator from the test point.V2Self Powered Flashing Neon DisplayElastimold Voltage Indicators are self powered from the test point and areprovided with a 20-year, long life neon bulb. A reflective background surroundsthe bulb to provide increased brightness. Flash rate per minute is proportionalto the phase to ph
cable using a spring loaded, over center toggle clamp mounting provision. The clamp accommodates cables ranging from .4 to 2.2 inches in diameter and includes retainer pads to prevent slip and twist. The clamp positions the cable conductor at a constant distance from the current se
Position the hydraulic breaker in a stable and flat place so as to prevent it from over turning. 7 (6) SPECIFICATIONS ‘‘ M ” Series ITEM Total Length Weight Chisel Operating specs. Appropriate Excavator TNB-2M TNB -5M TNB-6M MODEL TNB -08M TNB-1M TNB-3M TNB -4M Without c
Hydraulic Breakers [6]Point Styles & Special Application Bits Lube-Systems and Guards STRIKERMAXX LUBE-SYSTEMS and GUARDS StrikerMaxx Mini TNB-2M-4M Breaker Mounted StrikerMaxx Compact TNB-5M-110 Breaker Mounted StrikerMaxx Compact Guard TNB-5M-110 Breaker Mounted StrikerMaxx 2 TNB-151-400
Capacitors 5 – 6 Fault Finding & Testing Diodes,Varistors, EMC capacitors & Recifiers 7 – 10 Fault Finding & Testing Rotors 11 – 12 Fault Finding & Testing Stators 13 – 14 Fault Finding & Testing DC Welders 15 – 20 Fault Finding & Testing 3 Phase Alternators 21 – 26 Fault Finding & Testing
Bigtable [19], and Megastore [8] all run on Borg. For this paper, we classify higher-priority Borg jobs as “production” (prod) ones, and the rest as “non-production” (non-prod). Most long-running server jobs are prod; most batch jobs are non-prod. In a representative cell, prod jobs are allocated about 70% of the total CPU resources and .
CDS G3 Fault List (Numerical Order) Fault codes may be classified as sticky or not sticky: Type of fault Method to clear Not sticky Clears immediately after the fault is resolved Sticky Requires a key cycle (off and on) after the fault is resolved to clear. CDS G3 Fault Tables 90-8M0086113 SEPTEMBER 2013 Page 2G-3
illustrated in Figure 3. This is a fault occurring with phase A to ground fault at 8 km measured from the sending bus as depicted in Figure 1. The fault signals generated using ATP/EMTP are interfaced to the MATLAB for the fault detection algorithm. (a) Sending end (b) Receiving end Figure 3. Example of ATP/EMTP simulated fault signals for AG fault
In this paper, the calculation of double line to ground fault on 66/33 kV transmission line is emphasized. Figure 3. Double-Line-to-Ground Fault 2.4 Three-Phase Fault In this case, falling tower, failure of equipment or . ground fault, fault current on phase a is I a 0. Fault voltages at phase b and c are: V b .
Upshur County West Virginia Board of Pharmacy April 2020 8 . County Rankings By Indicator Patient County Indicator 1 Indicator 2 Indicator 3 Indicator 4 Indicator 5 Indicator 6 BARBOUR 34 26 38.5 42 24 32 BERKELEY 37 2 19 40.5 2 48 BOONE 2 48 2 36.5 51 3 BRAXTON 43 24 38.5 40.5 18 26
