PROTECTIVE RELAYS

THYTRONIC protective relays solution provides complete power system protection from any type of faults and system distress condition, making secure, reliable and efficient the power grid operation.

FEEDER PROTECTION

Protection relays for distribution feeders and transmission line back up.

MOTOR PROTECTION

Protection and control relays for asynchronous motors of all size for any kind of drives.

TRANSFORMER PROTECTION

Protection relays for two or three windings power and distribution transformers.

GENERATOR PROTECTION

Protection and control relays to ensure any size of generator protection within hydro, steam, thermal power generation..

GRID INTERCONNECTION PROTECTION

Protection relays for safe interconnection of any type of customer and renewable sources to the utility grid.

CAPACITOR BANK PROTECTION

The specialized solution for single/ double Wye grounded/ungrounded capacitor bank and harmonic filter.

SECONDARY MV PROTECTION

Self-Powered protection relays and advanced Fault Locator designed for protection and automation of medium voltage grid with any type of grounded system.

EXPLORE THE UNIQUE FEATURES AND PRODUCTS OF THE XMORE FAMILY.

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Feeder protection Motor protection Transformer protection Generator protection General protection Capacitor bank protection Secondary MV protection Loss of mains protection

Feeder protection

NA011

The relay type NA011 can be used in radial networks as feeder or power transformer protection.
In solidly grounded systems the residual overcurrent protection can be used on feeders of any length, while in ungrounded or Petersen coil and/or resistance grounded systems, the residual overcurrent protection can be used on feeders of small length in order to avoid unwanted trippings due to the capacitive current contribution of the feeder on external ground fault.
The NA011 protection relay may be shipped with traditional CTs or low power (LPCT) current inputs. For both versions, the residual overcurrent protection can use the measured (CTs or balanced transformer) or the calculated residual current.

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NA11

The relay type NA11 can be used in radial networks as feeder or power transformer protection. In solidly grounded systems the residual overcurrent protection can be used on feeders of any lenght, while in ungrounded or Petersen coil and/or resistance grounded systems, the residual overcurrent protection can be used on feeders of small lenght in order to avoid unwanted trippings due to the capacitive current contribution of the feeder on external ground fault.
Beside to the phase and residual overcurrent protections, the automatic reclosing function is provided. The NA11 device may be shipped with traditional CTs or with low power (LPCT) current inputs.

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NA20

The relay type NA20 is typically used in HV, MV and LV radial networks as feeder or power transformer protection.
In solidly grounded systems the residual overcurrent protection can be used on feeders of any length, while in
ungrounded or Petersen coil and/or resistance grounded systems, the residual overcurrent protection can be
used on feeders of small length in order to avoid unwanted trippings due to the capacitive current contribution
of the feeder on external ground fault.
Beside to the phase and residual overcurrent protection, the following protective functions are provided:
  • Thermal image protection of lines and power transformers.
  • Undercurrent protection for monitoring of CB opening.
  • Negative sequence protection against asymmetrical short circuits and unbalance loads.
  • I2/I1 protection against phase interruption under low-load condition.

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NA21

The relay type NA21 is typically used in HV, MV and LV radial networks as feeder or power transformer protection.
In solidly grounded systems the residual overcurrent protection can be used on feeders of any length, while in ungrounded or Petersen coil and/or resistance grounded systems, the residual overcurrent protection can be used on feeders of small length in order to avoid unwanted trippings due to the capacitive current contribution of the feeder on external ground fault.
Beside to the phase and residual overcurrent protection, the following protective functions are provided:
  • Thermal image protection of lines and power transformers
  • Undercurrent protection for monitoring of CB opening
  • Negative sequence protection against asymmetrical short circuits and unbalance loads
  • I2/I1 protection against phase interruption under low-load condition
  • Automatic reclosing.

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XMR-A

XMR-A is a part of XMORE platform, the complete range of IEDs for Medium Voltage application including feeder, motor, generator, transformer and capacitor bank.

Thanks to Hardware and Software modularity XMR-A is flexible and scalable in term of application and performance as:

  • Overcurrent and Earth fault protection (StandardSW configuration)
  • Additional double Earth Fault input for two-side Transformer protection (SW PAC Xtra Current)
  • Additional Earth Fault Directional Overcurrent(SW PAC Xtra Voltage)
  • Small sized Motor Protection (SW PAC Motor)
The relay is compliant with CEI-016 requirements

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XMR-P


XMR-P is a part of XMORE platform, the complete range of IEDs for Medium Voltage application including feeder, motor, generator, transformer and capacitor bank; it is the multifunction and comprehensive Feeder, Transformer, Motor and Generator protection which includes an accurate and complete measurement, including Energy and Power.

Thanks to Hardware and Software modularity XMR-P is flexible and scalable in term of application and performance as:

  • Feeder Protection (Standard SW configuration)
  • Feeder Protection with additional Power protection element (SW PAC Power)
  • Feeder Protection with additional Directional Overcurrent and Earth Fault element (SW PAC Directional) 
  • Generator and Motor Protection relay (SW PAC Motor)
The relay is compliant with CEI-016 requirements

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DMC900A3S0

Protection and control panels that can be installed to the risers of the MV section and HV user line of primary substations.
The devices can also be installed to MV nodes and primary substations operated with neutral to ground or very low neutral resistance in foreign countries.
To supplement the protection functions, the system includes the following functions: breaker failure (BF), CT monitoring (74CT), VT monitoring (74VT), trip circuit monitoring (74TCS), Synchrocheck relay, EAC (Equilibratore Automatico di Carico)/ALB (Automatic Load Balancer) protection, programmable logic controller (PLC) and automatic reclosing (79).
The system can be calibrated, programmed and its logs and values read with a PC running the Thy-Visor software, or via Ethernet; all the above operations are also available via the front panel keypad (MMI).
Up to 2 external RIO modules DMRIS0 can be supplied.
Compliant to ENEL DMI 900016 and GSTP101 and to cyber security standards.

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Motor protection

NM10

The relay type NM10 can be used for protection of medium size motors in MV and LV systems powered through lines of:

any length in solidly or low resistance grounded systems
small length in ungrounded or Petersen coil and/or high resistance grounded systems

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NM20

The relay type NM20 can be used for protection of large size motors in MV systems.
For any grounded systems (solidly grounded, ungrounded or Petersen coil and/or resistance grounded) the protection can be used on feeders of any lenght.

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XMR-A

XMR-A is a part of XMORE platform, the complete range of IEDs for Medium Voltage application including feeder, motor, generator, transformer and capacitor bank.

Thanks to Hardware and Software modularity XMR-A is flexible and scalable in term of application and performance as:

  • Overcurrent and Earth fault protection (StandardSW configuration)
  • Additional double Earth Fault input for two-side Transformer protection (SW PAC Xtra Current)
  • Additional Earth Fault Directional Overcurrent(SW PAC Xtra Voltage)
  • Small sized Motor Protection (SW PAC Motor)
The relay is compliant with CEI-016 requirements

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XMR-P


XMR-P is a part of XMORE platform, the complete range of IEDs for Medium Voltage application including feeder, motor, generator, transformer and capacitor bank; it is the multifunction and comprehensive Feeder, Transformer, Motor and Generator protection which includes an accurate and complete measurement, including Energy and Power.

Thanks to Hardware and Software modularity XMR-P is flexible and scalable in term of application and performance as:

  • Feeder Protection (Standard SW configuration)
  • Feeder Protection with additional Power protection element (SW PAC Power)
  • Feeder Protection with additional Directional Overcurrent and Earth Fault element (SW PAC Directional) 
  • Generator and Motor Protection relay (SW PAC Motor)
The relay is compliant with CEI-016 requirements

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Transformer protection

XMR-T

XMR-T is a part of XMORE platform, the complete range of IEDs for Medium Voltage application. 
XMR-T the comprehensive solution for two or three windings transformer protection.

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Generator protection

NG20

Several functions, required for synchronous generators and not self-started synchronous motors are included.

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XMR-D

XMR-D is a part of XMORE platform, the complete range of IEDs for Medium Voltage application including feeder, motor, generator, transformer and capacitor bank; it is the multifunction and comprehensive Motor and Generator protection relay, including Differential element. Thanks to Hardware and Software modularity XMR-D is flexible and scalable in term of application and performance.


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XMR-P


XMR-P is a part of XMORE platform, the complete range of IEDs for Medium Voltage application including feeder, motor, generator, transformer and capacitor bank; it is the multifunction and comprehensive Feeder, Transformer, Motor and Generator protection which includes an accurate and complete measurement, including Energy and Power.

Thanks to Hardware and Software modularity XMR-P is flexible and scalable in term of application and performance as:

  • Feeder Protection (Standard SW configuration)
  • Feeder Protection with additional Power protection element (SW PAC Power)
  • Feeder Protection with additional Directional Overcurrent and Earth Fault element (SW PAC Directional) 
  • Generator and Motor Protection relay (SW PAC Motor)
The relay is compliant with CEI-016 requirements

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General protection

NA016

The relay type NA016 is typically used in radial HV, MV and LV networks as feeder or power transformer protection.
In solidly grounded systems the residual overcurrent protection can be used on feeders of any lenght, while in ungrounded or Petersen coil and/or resistance grounded systems, the residual overcurrent protection can be used on feeders of small lenght in order to avoid unwanted trippings due to the capacitive current contribution of the feeder on external ground fault.
The relay complies with CEI 0-16 requirements.

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NA10

The relay type NA10 is typically used in radial HV, MV and LV networks as feeder or power transformer protection.
In solidly grounded systems the residual overcurrent protection can be used on feeders of any lenght, while in ungrounded or Petersen coil and/or resistance grounded systems, the residual overcurrent protection can be used on feeders of small lenght in order to avoid unwanted trippings due to the capacitive current contribution of the feeder on external ground fault.
The relay complies with CEI 0-16 requirements.

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NA30

The relay type NA30 is typically used in radial MV networks as feeder or power transformer protection:

  • On long radial feeders in ungrounded or Petersen coil and/or high resistance grounded systems
  • On the LV side of parallel connected transformers with any grounding
  • As earth fault protection of parallel connected generators or generator-transformer unit on the same busbar
The relay complies with CEI-016 requirements.

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NA60

The relay type NA60 can be typically used in radial or meshed MV and LV networks as feeder or power transformer protection:

  • on radial, ring and parallel feeders of any length in solidly grounded, ungrounded, Petersen coil and/or resistance grounded systems
  • on parallel connected generators on the same busbar
  • Moreover undervoltage and overvoltage functions are provided as protections or voltage controls.
The NA60 relay can be can be shipped with circuits for input phase current suitable for traditional CTs and VTs, or combined ThySensor devices.

The NA60 relay complies with CEI-016 standard

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NV021

The relay type NV021 can be typically used in LV distribution systems, on transformers or for electrical machines.
It can be used for system decoupling, load shedding and loss of main (islanding) protection.
The relay complies with CEI 0-21 requirements.

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NV10B

The relay type NV10B can be typically used in HV, MV and LV distribution systems, on transformers or for electrical machines. It can be used for system decoupling, load shedding and loss of main (islanding) protection.

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MODEM GSM-4

M-GSM4 modems enable the implementation of remote control of Thytronic protection relays via GSM/GPRS/LTE mobile phone up to and including 4G technology. Specifically, they enable control of the opening and closing of interface devices installed on photovoltaic and wind renewable generation systems having a total rated power greater than or equal to 100 kW.

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Capacitor bank protection

NC020

In recent years the harmonic producing part of total load has increased continuously because of the massive usage of power electronic in all the voltage levels. Thyristor convertors, frequency convertors, thyristor switches and static var compensator, such as thyristor controlled reactors (TCR) and thyristor switched capacitors (TSC), are commonly adopted in industrial applications and power utilities.
Filter capacitor banks consist of capacitor bank and series connected air core. Their task is to absorb the harmonic currents generated by loads and all above mentioned power electronic devices.
The aim of NC020 is to provide a reliable and cost effective solution for such an application granting capacitor bank safe operations.

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NC20

The relay type NC20 provides protection of shunt capacitor banks and harmonic filter circuits. The capacitor banks may have the following configurations:

  • Single Wye grounded.
  • Single Wye ungrounded (with a resistor on the output of the neutral unbalance voltage transformer in order to develop the appropriate input current for the unbalance protection).
  • Double Wye ungrounded.
The capacitor banks may be: internally/externally fused or fuseless capacitor units. A suitable compensation method is provided to compensate the inherent unbalance neutral current
Protections 37, 49 and 50/51 (RMS) are based on RMS value measurement of the three phase currents (fundamental and harmonics up to the 11th)

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Secondary MV protection

SME2-IS (RGDM-I)

Indoor fault detection device with functions: maximum current, earth directional, maximum active power directional, reclosing, presence/absence voltage and synchronism control.
Compliant to ENEL GSTP011 and cyber security standards.

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SME70 (RGDAT INDOOR)

SME70-C/SME70-M fault detection system is designed in conformity with the ENEL GSTP001 specification; it is installed in indoor application in order to provide local and remote signalling of short circuit and earth faults that may occur in MV distribution networks. SME70-C/SME70-M quickly locates the line section affected by the fault thus reducing power outage.

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SME70-O (RGDAT OUTDOOR)

SME70-O fault detection system is designed in conformity with the ENEL GSTP001 specification; it is installed in outdoor application in order to provide local and remote signalling of short circuit and earth faults that may occur in MV distribution networks. SME70-O quickly  locates the line section affected by the fault thus reducing power outage.

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Loss of mains protection

NV10P

The relay type NV10P can be typically used in HV, MV and LV distribution systems, on transformers or for electrical machines. It can be used for system decoupling, load shedding and loss of main (islanding) protection.

The relay is compliant with CEI-016 requirements

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XMR-V

XMR-V is a part of XMORE platform, the complete range of IEDs for Medium Voltage application. XMR-V is suitable for Loss of Main Voltage and Frequency protection.

The relay is compliant with CEI-016 requirements

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