Thytronic NG10 User Manual

MEASURES, LOGIC STATES AND COUNTERS
93
NG10 - Manual - 04 - 2022
Oscillography - DFR
Upon programmable trigger, the fault records are recorded in COMTRADE format; the sampled mea-
sures (16 sample per cycle) are stored in a circular shift memory buffer.
The fault record are self-triggered; they are stored in sequential order up the allocated memory is
used up after which the oldest memory is overwritten.
An operating procedure example for the digital fault recording is illustrated inside the ThyVisor sec-
tion.
Following parameters are user-programmable:
• Alarm: when the 80% of the buffer space is reached an alarm may be issued. The system being of
linear type, the records are back-to-back recorded to the end of available memory; the alarm out-
put is a warning in order that the user may download data
[1]
to clear memory for new records
• Pre-trigger and post-trigger time setting
• Selected sampled quantities,
• Analog channels (1...12) allocation,
• Digital channels (1...12) allocation (output relay and/or binary inputs),
• Trigger setup; the information storage starts when a state transition on the selected signal occurs.
(protective element start and/or trip, output relay and/or binary input switching).
COMTRADE
Records are recorded in COMTRADE format; (Common Format for Transient Data); This is a standard
for the data exchange for various types of tests or simulation datas, etc, for power system applica-
tions.
The measurements are recorded in ASCII or BINARY format. COMTRADE files always come by
pairs:
• The “.CFG”-file describing the configuration: number of analog and digital channels, sampling rate,
scale factors, etc.
• The “.DAT”-file containing the data
The COMTRADE is part of IEC 60255-24 standard.
The recording can be analyzed by mean of ThyVisor sw or any other standard compliant viewer.
The record quantity is depending on settings of following parameters:
• Pre-trigger and post-trigger times
• Number of allocated channels.
By means of the following formula the record quantity may be evaluated::
where:
• N record quantity
• v
i
sampled measures
• v
RMS
analog measures (RMS)
• n
B
logic variables (2 up to 16 variables)
• t
pre
pre-trigger time interval
• t
post
post-trigger time interval
• f frequency
Note 1 Data are stored into non-volatile memory; they are retained once power is turned off.
trigger.ai
Oscillographic recorder - trigger
Trigger
Time
pre-trigger post-trigger
N
= int
(34 + 20 v
i
+ 4 v
RMS
+ n
B
)·
12000
(t
pre
+ t
post
)(s)
·
f (Hz)
50 (Hz)

Thytronic NG10 Specifications

General

Brand	Thytronic
Model	NG10
Category	Protection Device
Language	English

Summary

1 INTRODUCTION

Safety Recommendations

Highlights critical safety information, symbols, and precautions for handling the device.

3 TECHNICAL DATA

General Technical Specifications

Covers product standards, mechanical, insulation, voltage, and EMC data.

Input Circuits

Details auxiliary power supply, phase current, residual current, and binary input circuits.

General Settings

Parameters for rated values, input sequence, and polarity selection.

Protective Functions: Thermal and Residual Overcurrent

Details thermal protection and residual overcurrent/ground fault functions.

Protective Functions: Ground Fault, Differential, and Breaker Failure

Details low impedance ground fault, differential protection, and breaker failure functions.

Control and Monitoring Functions

Covers trip circuit supervision, selective block, CT supervision, and demand measures.

4 FUNCTION CHARACTERISTICS

Hardware Description

Illustrates the device layout and modular component allocation.

Software Description

Explains the three fundamental elements of the Pro-N relay software: base, RTOS, and DSP.

I/O Description: Metering Inputs and Signal Processing

Binary Inputs: Configuration and Functions

Output Relays

Details six output relays, their contact types, operating modes, and logic.

LED Indicators

Communication Interfaces

4.4 PROTECTIVE ELEMENTS

Rated Values

Parameters for setting relay name, nominal currents, and primary values.

Thermal Protection with Pt100 Probes

How Pt100 probes acquire temperature and provide thermal protection.

Residual Overcurrent/High Impedance Ground Fault

Explains use, operation, settings, and characteristic curves for 50N/51N-87NHIZ.

Residual Overcurrent/High Impedance Ground Fault: Blocking Logic

Details Breaker Failure, Logical Block, and Selective Block functions for this protection.

Residual Overcurrent/High Impedance Ground Fault: Blocking Logic Continued

Continues the description of blocking logic for the residual overcurrent/ground fault protection.

Residual Overcurrent/High Impedance Ground Fault: Logic Diagrams

Residual Overcurrent/High Impedance Ground Fault: First Element Logic

Detailed logic diagram for the first element of the protection.

Residual Overcurrent/High Impedance Ground Fault: First Element Blocking Logic

Residual Overcurrent/High Impedance Ground Fault: Second Element Logic

Detailed logic diagram for the second element of the protection.

Residual Overcurrent/High Impedance Ground Fault: Second Element Blocking Logic

Residual Overcurrent/High Impedance Ground Fault: Third Element Logic

Detailed logic diagram for the third element of the protection.

Residual Overcurrent/High Impedance Ground Fault: Third Element Blocking Logic

Low Impedance Restricted Ground Fault - 64REF

Explains operation and settings for the 64REF protection.

Low Impedance Restricted Ground Fault - 64REF: Operation and Criteria

Discusses operating conditions, comparison criteria, and enable parameters.

Low Impedance Restricted Ground Fault - 64REF: Diagrams and Characteristics

64REF Protection: Blocking Functions

Details Breaker Failure, Logical Block, and Selective Block functions for 64REF.

Differential Protection (87G-M-L): Introduction and Definitions

Introduces differential protection and defines current values.

Differential Protection (87G-M-L): Magnitude and Polarity Matching

Explains current compensation and polarity matching calculations.

Differential Protection (87G-M-L): Current Calculations

Differential Protection (87G-M-L): External Fault Stabilization

Conditions for start of the first threshold and external fault stabilization.

Differential Protection (87G-M-L): Second Threshold and Blocking

Operation of second threshold, breaker failure, logical block, and selective block.

Additional Stabilization: Saturation Detector

How saturation detector stabilizes current loops and its detection criteria.

Saturation Detector Logic

Biased Dual Slope Characteristic

Logic diagrams for the biased dual slope characteristic and blocking functions.

Biased Dual Slope Characteristic: Block Output Logic

Breaker Failure (BF) Function

Explains BF operation, start conditions, and parameters.

Breaker Failure (BF) Logic Diagram

Logic diagram illustrating the breaker failure element.

4.5 CONTROL AND MONITORING

Logical Block - Block1

How logical block function uses binary inputs to block protection trips.

Logical Block - Block1: Logic Diagram

Selective Block - Block2: Input Logic

Using pilot wire input and binary inputs for selective blocking.

Selective Block - Block2: Input Logic Diagrams

Selective Block - Block2: Output Logic and Operation

Using output relays and pilot wire for selective block, and operational behavior.

Remote Tripping

CT Supervision - 74CT

Monitors phase CTs and relay phase input for failures using symmetry criteria.

Trip Circuit Supervision - 74TCS

Monitors trip circuit for anomalies like missing opening or auxiliary voltage faults.

Circuit Breaker Supervision

Diagnostic functions for CB position, wear estimate, and opening time.

Circuit Breaker Supervision: Diagnostic Logic Diagrams

5 MEASURES, LOGIC STATES AND COUNTERS

Measures: Direct, Calculated, and Demand

Pilot Wire Diagnostic, Selective Block, and Fault/Event Recording

Oscillography (DFR) and COMTRADE Format

Parameters for fault records in COMTRADE format and data exchange standards.

Self-Test and Diagnostics

6 INSTALLATION

Mounting: Flush and Projecting

Instructions for flush mounting screw access and projecting mounting steps.

Mounting: Flush Mounting

Details for mounting the case on an electric control board.

6.3 ELECTRICAL CONNECTIONS

Amperometric Inputs and Earthing

Details on current input connections, specifications, and protective ground connection.

Core Balanced CT Usage

Communication Ports: USB, Ethernet, and RS485

Details connection requirements and parameters for USB, Ethernet, and RS485 ports.

6.4 NOMINAL CURRENT SETTINGS

Factory Defaults and Modification Procedure

Factory default settings and procedure for modifying nominal current settings.

Amperometric Inputs: Dip-switch Configuration

6.6 FINAL OPERATIONS

Pre-Energization Checks

Pre-energization checks for auxiliary voltage, CT settings, wiring, and screws.

7 PROGRAMMING AND SETTINGS

SW ThyVisor: Installation and Use

How to download, install, and use the ThyVisor software.

MMI: Operation and Reading Variables

Explains MMI buttons, display, and how to read variables.

MMI: Parameter Adjustment Procedure

Test Operations

MMI: Setting Modifying

Communication Settings

Reading and modifying RS485 and Ethernet parameters via MMI.

8.4 APPENDIX B1 - I/O Diagram

8.5 APPENDIX B2 - Interfaces

8.6 APPENDIX B3 - Connection Diagrams

Differential Protection of Generator

Differential Protection of Motor

Differential Protection of Short Line

8.8 APPENDIX D - Setting Table

Base, Inputs, and Relays Settings

Details settable parameters for Base, Inputs, and Relays.

8.8 APPENDIX D - Setting table

Residual Overcurrent/Ground Fault (IE> Element) Settings

Details settable parameters for Residual Overcurrent/Ground Fault (IE> Element).

Residual Overcurrent/Ground Fault, 64REF, Differential, CT Saturation, and Id> Element Settings

Details settable parameters for Residual Overcurrent/Ground Fault (IE>>, IE>>> Elements), 64REF, Differential, CT Saturation, and Id> Element.

Id>> Element, Trip Circuit Supervision, Selective Block, and Breaker Failure Settings

Details settable parameters for Id>> Element, Trip Circuit Supervision, Selective Block, and Breaker Failure.

Residual Overcurrent/Ground Fault (IE>>, IE>>> Elements) Settings

Details settable parameters for Residual Overcurrent/Ground Fault (IE>>, IE>>> Elements).

64REF, Differential, CT Saturation, and Id> Element Settings

Details settable parameters for 64REF, Differential, CT Saturation, and Id> Element.

PLC, Switches, and Timers Settings