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Defines the manual's scope, liability limitations, and user responsibilities.
Specifies the manual's validity for NVA100X-D devices with firmware version 1.70 and following.
Lists the CEE directives the product complies with, including EMC and Low Voltage Directives.
Provides contact information for technical service and support.
States all rights are reserved; copying is forbidden without consent.
Details the one-year warranty period for defects in materials and workmanship.
Highlights crucial safety information and symbols like DANGER, WARNING, CAUTION.
Advises on handling hazardous voltages after insulation tests.
Explains the relay's typical use in MV/LV networks for differential protection.
Shows an image of the NVA100X-D device.
Lists key hardware and operating features of the relay.
Covers general specifications like standards, mechanical data, insulation, and EMC tests.
Details specifications for auxiliary power, current, and voltage inputs, and binary inputs.
Provides specifications for output relays and block output circuits.
Describes MMI components: display, LEDs, and keyboard.
Lists Ethernet and RS485 ports with protocols and connection types.
Specifies rated values for frequency, currents, voltages, powers, and general settings.
Details numerous protective functions with codes, characteristics, and parameters.
Covers functions like harmonic restraint, trip circuit supervision, and circuit breaker supervision.
Lists accuracy for measurements and defines symbols.
Describes device layout, power supply, CPU, analog processing, and input board.
Explains firmware structure: base software, RTOS, and tasks.
Details metering inputs, signal processing, and conventions.
Lists and describes protective elements with their technical data and rated values.
Explains direct/inverse cyclic sequences and selection methods.
Explains how to reset latched LEDs and output relays.
Describes two independent setting profiles (A and B) and how to switch them.
Describes how binary input change blocks phase and ground protective elements.
Explains how binary input change blocks phase protective elements.
Explains how binary input change blocks earth protective elements.
Describes how binary input blocks protection for a specific time.
Explains how external acquisition of remote commands drives CB remotely.
Details how input activation presets the thermal image and its adjustment.
Explains how input activation drives a programmed output relay.
Describes the local port for setting via ThySetter software.
Lists implemented protocols like ModBus RTU and IEC 60870-5-103.
Details Ethernet ports, options, and connection types.
Lists settable parameters like reference name, frequency, and rated currents.
Explains use for generator short-circuit protection and coordination with distance protections.
Describes impedance measurement calculation and start/trip logic.
Introduces optional thermal protection using Pt100 probes for machinery overheating.
Describes two adjustable thresholds with definite/inverse time and enablement/disablement.
Explains frequency acquisition and comparison with setting values for start/trip.
Describes adjustable threshold with definite time delay and its enabling/disabling.
Explains positive sequence voltage calculation and comparison with setting values.
States 27V1 element can produce Breaker Failure output if U1<BF is ON.
Explains element blocking during VT supervision to prevent false trips.
Defines active power calculation and lists involved components.
Explains element enablement for start/trip based on direction setting.
Describes single adjustable threshold with definite time characteristic.
Explains comparison of three side L currents with setting values and start/trip logic.
Defines active power calculation and lists involved components.
Explains element enablement for start/trip based on direction setting.
States application for protection of synchronous generators and motors.
Lists causes for loss of field in synchronous motors/generators.
Discusses causes of loss of field in generators and resulting effects.
Explains consequences of excitation failure in synchronous motors.
Explains machine operation with unbalanced load and induced currents causing overheating.
States application for protection of synchronous generators and motors.
Details negative sequence current computation and comparison with thresholds.
Explains motor operation with unbalanced load and induced currents causing overheating.
Details negative sequence current computation and comparison with setting values.
States starting of synchronous motors is inhibited when 47 function is active.
Explains positive sequence voltage calculation and comparison with thresholds.
Describes how 47BLK1 parameter and binary input block the element.
Explains thermal replica algorithm considering Joule losses and cooling effects.
Details thermal current calculation and thermal image, including constants and presets.
Mentions three adjustable thresholds with delay for H and L sides.
Explains comparison of phase fundamental frequency current with setting values.
Explains function for protecting against thermal effects of slow starting or locked rotors.
Details comparison of phase fundamental frequency current with setting values and start/trip logic.
Explains use for generator short circuit current detection.
Details measures involved and two operation thresholds with definite time.
Explains use in radial/meshed networks for feeders, transformers, or motors with neutral grounding.
Describes comparison of residual frequency current with setting values.
Explains use for calculated residual current, useful when direct measurement is unavailable.
Details comparison of calculated residual current with setting thresholds.
Mentions two adjustable thresholds with delay, for definite/inverse and definite time.
Explains measuring criteria for residual voltage and comparison with settings.
States adjustable threshold with definite time delay, and enablement/disablement.
Explains negative sequence voltage calculation and comparison with setting value.
States 59V2 element can produce Breaker Failure output if U2>BF is ON.
Describes how U2>BLK1 parameter and binary input block the protection.
Explains use for detecting ground faults in three-phase windings.
Details comparison of residual current with stabilization current and tripping conditions.
Explains task to prevent excessive motor restarts.
Describes comparison of starts/span with thresholds.
Mentions four adjustable thresholds, enablement/disablement, and inhibition.
Explains comparison of residual current with setting values and start/trip logic.
Explains VT monitoring for detecting failures and its impact on overcurrent elements.
Explains four adjustable thresholds with programmable operate time.
Details operating modes and polarizing reference selection.
Mentions two adjustable thresholds with delay, enablement/disablement.
Explains frequency acquisition and comparison with setting values.
Mentions four adjustable thresholds with delay, enablement/disablement.
Explains frequency acquisition and comparison with setting values.
Describes stabilized differential protection for transformers, motors, and generators.
Provides definitions for phase currents, compensated currents, and stabilization currents.
Explains function to issue back-up trip if primary breaker fails.
Details starting conditions and enablement/disablement.
Explains CB position acquisition using binary inputs.
Describes how BF-BLK1 parameter and binary input block protection.
Explains logic selectivity purpose and available I/O circuits.
Details use of pilot wire input BLIN1 and binary inputs.
Details use of pilot wire output BLOUT1 and output relays.
Explains phase/earth block selection via ModeBLOUT1.
Describes configuration of output relays for selective block.
States detailed diagnostic info for pilot wire is available.
Explains selection of desired quantities for oscillography.
Explains selection of desired quantities for analog channels.
Explains selection of desired quantities for digital channels.
Lists direct measures like frequency, voltages, currents.
Lists calculated measures like compensated currents, differential currents.
Lists displacement angles.
Lists positive/negative sequence currents and voltages.
Lists device diagnostic statuses.
Lists program diagnostic statuses.
Lists data-base boot statuses.
Lists data-base runtime statuses.
Lists DSP boot statuses.
Lists DSP run-time statuses.
Lists memory boot statuses.
Lists memory run-time statuses.
Lists data bus heavy statuses.
Lists PLC boot statuses.
Lists PLC run-time statuses.
Lists protection I/O assigned verify startup statuses.
Lists protection I/O assigned verify run-time major statuses.
Lists total protection I/O assigned not-matching values.
Lists protection I/O assigned not-matching statuses.
Lists PLC I/O assigned not-matching statuses.
Lists PLC I/O assigned not-matching run-time major statuses.
Lists total PLC I/O assigned not-matching values.
Lists PLC I/O assigned not-matching statuses.
States detailed diagnostic info for pilot wire is available.
Summarizes functions of selective block.
Explains how fault trigger initiates data storing for fault record SFR.
Describes packaging ensuring protection for transport and storage under normal environmental conditions.
Details mounting options: Flush mounting and Rack mounting.
Lists characteristics for screw terminals, including nominal cross section, tightening torque, and stripping length.
Lists characteristics for IN1C, IN2D, OC1E, OC2F connections.
Lists characteristics for X1-X6 connections.
Describes amperometric input circuits and essential precautions for short-circuiting.
Lists available time synchronization methods: SNTP protocol and IRIG-B.
Describes the local port for setting via ThySetter software.
Details Ethernet ports, options, and connection types, including PC connection for testing.
Explains RS485 communication circuit connections, termination, and impedance adjustment.
Illustrates logic selectivity performed by dedicated I/O.
Shows accelerated protection example using binary input and pilot wire links.
Describes ThySetter software as a data browser and setup engine.
Mentions ThySetter release download location.
Refers to ThySetter user manual for instructions.
Explains the meaning of front panel LEDs.
Describes how data can be displayed in functional submenus.
Explains how to change the password.
Outlines steps to restore data base and reset password.
Explains how to issue CB commands and enable output relays.
Describes factory default mode for settings changes.
Describes mode for settings changes via password.
Describes mode where settings changes are disabled.
Details operating with a password, including changing it.
Explains password change procedure.
Outlines steps for database restoration and password reset.
Describes data display and arrangement in functional submenus.
Shows operate characteristic curves for protective elements.
Provides the mathematical formulas for IEC inverse time curves.
Provides mathematical formulas for Rectifier, I2t, and EM inverse time curves.
Shows connection diagram for differential protection of transformers/generators.
Shows connection diagram for differential protection of motors.
Provides dimensions for flush mounting cutouts.
Shows the arrangement for rack mounting.
Lists harmonized standards applied.
Lists other applied standards.
Indicates the year of CE marking.
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