Protection & Control Relays

Complete and Reliable Solutions for Digital Transmission and Distribution Substations

Modular, Flexible & Cybersecure Protection IEDs designed to meet the most demanding requirements in each Application Field

HV Lines / Transformers / Busbars and Breakers / Feeders / Motors / Bay Control Applications / Grid Automation

 

General characteristics of the Flex Family

  • Powerful programable logic. 9 2000 event log. Up to 100 oscillography seconds.
    Alphanumeric or graphic display.
  • 160 DI, 80 DO, and 22 LEDs.
  • Bonding, RSTP, PRP and HSR Redundancy.
  • IEC 61850 Ed.2, DNP3.0, Modbus RTU and PROCOME Protocols.
  • Native process bus. Analog input cards operate as Merging Units for the CPU.
  • Synchronized samples at 4800 Hz (as per IEC 61869-9).
  • Cybersecurity in accordance with IEC 62351, IEC 62443 and IEEE 1686-2013 standards. RBAC, secure keys, physical and logical port disabling, cybersecurity event log, securing of management protocols (PROCOME, HTTPS, SFTP, SSH), remote authentication (LDAP, RADIUS) and digital firmware securitization.
  • Time synchronization by IRIG-B, SNTP and PTP (Ordinary Clock / Transparent Clock).

 

Download now the Flex Family Protection Relays leaflet PDF

All about the Cybersecurity functionality on the Flex Family Protection Relays 

IRF – Modular Feeder Protection Relay IEC 61850 2

Protection relay for distribution feeders, transformers and generators, transmission line backup, and BCU (bay control unit). IEC 61850 Certified ed 2. The IRF is applicable in any substation scheme. The protection functions are suitable for any neutral configuration, solid-grounded, resistor grounded, Petersen coil compensated, and isolated. The powerful programmable logic features selectable execution times according to the required priority (2 [...]

DLF – Line Differential Protection Relay IEC 61850

Line Differential Protection with Distance Backup. Both units are suitable for lines of any Voltage Level, Overhead or Under Ground, Multiterminal, and Single or Parallel Circuits The DLF includes all the protection, control and measurement functions for a power line with or without Series Compensation, Single Breaker, and Single or Three Pole Tripping. The fast Differential Unit, complemented by the [...]

IDF – Transformer Protection Relay IEC 61850 2

Protection relay for two or three winding transformer or autotransformer, of any voltage level, with single or double circuit breaker. IEC 61850 Certificate ed 2 Suitable for phase-shifting transformers, Scott or Leblanc transformers. Can be applied as a differential protection for reactances, SVCs, generators and motors. A fast differential unit, complemented by advanced blocking and harmonic restraint logics and an external fault [...]

ZLF – Distance Protection Relay IEC 61850 2

Subcycle distance protection suitable for lines of any voltage level with any configuration: overhead or underground, single or parallel circuits The ZLF includes all the protection, control and measurement functions for a power line, with or without series compensation, single or double breaker, and single pole or three pole tripping. Eight distance zones with Mho or quadrilateral characteristic, complemented with [...]

RTF – (AVR) Automatic Voltage Regulator – IEC 61850

Automatic voltage regulation (AVR) for up to 5 power transformers in parallel. Parallel transformer regulation by master-slave, circulating current and negative reactance methods. It also includes line voltage drop compensation. AVR Key Features Voltage Regulation. Maintains the transformer output voltage at the setpoint value, calculating the difference between the measured voltage and the setpoint voltage and comparing it with a threshold [...]

ZIV Protection relays by application

Feeder Protection

IRV – Feeder Protection (“V” Platform)

The IED generically called IRV integrates protection, control and metering functions for a great variety of applications, such as feeders, machine lines, frontier points, etc These IEDs use digital technology based on a potent microprocessor and DSPs that incorporate Directional and Non-Directional Overcurrent Protection, Overvoltage, Undervoltage, Over / Underfrequency, Synchronism, Power Inversion, Thermal Image, Recloser function and others. IRV systems [...]

IDV – Transformer Differential Protection

A Complete solution for Transformer Bays and other Machines IDV Relays include all Protection, Control and Measurement functions for Two or Three Winding transformers or autotransformers at any voltage level, with Single or Double Breaker. It may also be applied as differential protection in Reactances, Generators or Motors. Key Features Solid State Trip Outputs. Differential Unit with Percentage and Harmonic [...]

IRL – Compact Feeder Protection

Multifunction Protection for MV Power Systems & Industry. For Grounded or Ungrounded Schemes Compact Feeder Multifunction solution for MV switchgear, with Load Shedding Function to ensure the stability of the system, Back-Up performing capability in HV lines and powerful built-in Control Logic Module. Key Features 50/51 - Phase O/C. 50N/51N - Neutral O/C. 50G/51G G- round O/C. 50Ns/51Ns - Sensitive [...]

IDF – Transformer Protection Relay IEC 61850 2

Protection relay for two or three winding transformer or autotransformer, of any voltage level, with single or double circuit breaker. IEC 61850 Certificate ed 2 Suitable for phase-shifting transformers, Scott or Leblanc transformers. Can be applied as a differential protection for reactances, SVCs, generators and motors. A fast differential unit, complemented by advanced blocking and harmonic restraint logics and an external fault [...]

IRF – Modular Feeder Protection Relay IEC 61850 2

Protection relay for distribution feeders, transformers and generators, transmission line backup, and BCU (bay control unit). IEC 61850 Certified ed 2. The IRF is applicable in any substation scheme. The protection functions are suitable for any neutral configuration, solid-grounded, resistor grounded, Petersen coil compensated, and isolated. The powerful programmable logic features selectable execution times according to the required priority (2 [...]

Line Protection

ZLV – Distance Protection (“V” Platform)

Selective, Fast and Reliable Protection in Overhead Lines and Cables ZLV relays provide distance protection for power transmission and subtransmission lines. They feature a complete package of functions and protection schemes offering selective, quick and reliable protection both for underground and overhead lines, with or without series compensation. Key features Single or Double-breaker bay protection. 21/21N Distance protection for ground [...]

ZLF – Distance Protection Relay IEC 61850 2

Subcycle distance protection suitable for lines of any voltage level with any configuration: overhead or underground, single or parallel circuits The ZLF includes all the protection, control and measurement functions for a power line, with or without series compensation, single or double breaker, and single pole or three pole tripping. Eight distance zones with Mho or quadrilateral characteristic, complemented with [...]

DLF – Line Differential Protection Relay IEC 61850

Line Differential Protection with Distance Backup. Both units are suitable for lines of any Voltage Level, Overhead or Under Ground, Multiterminal, and Single or Parallel Circuits The DLF includes all the protection, control and measurement functions for a power line with or without Series Compensation, Single Breaker, and Single or Three Pole Tripping. The fast Differential Unit, complemented by the [...]

Transformer Protection

IDF – Transformer Protection Relay IEC 61850 2

Protection relay for two or three winding transformer or autotransformer, of any voltage level, with single or double circuit breaker. IEC 61850 Certificate ed 2 Suitable for phase-shifting transformers, Scott or Leblanc transformers. Can be applied as a differential protection for reactances, SVCs, generators and motors. A fast differential unit, complemented by advanced blocking and harmonic restraint logics and an external fault [...]

IDV – Transformer Differential Protection

A Complete solution for Transformer Bays and other Machines IDV Relays include all Protection, Control and Measurement functions for Two or Three Winding transformers or autotransformers at any voltage level, with Single or Double Breaker. It may also be applied as differential protection in Reactances, Generators or Motors. Key Features Solid State Trip Outputs. Differential Unit with Percentage and Harmonic [...]

Busbar Protection

DBC – Busbar Protection Central Unit

Distributed Low-impedance Busbar Differential + Breaker Failure Protection (Central Unit) DBN Systems consists of one Differential Central Unit (DBC), and a Bay IED (DBP) per line on the bus. The DBN System can be configured to protect any substation scheme (singlebus, double-bus, transfer bus schemes, sectionalized schemes, etc.) up to 4 buses and 28 lines. Additionally, it is also possible [...]

DBP – Busbar Protection Bay Unit

Distributed Low-impedance Busbar Differential + Breaker Failure Protection (Bay Unit) DBN Systems are suitable for substations with up to four or five buses (depending on model), and up to 14, 28 or 32 current bays. Up to 4 bus voltage DBP type bays are available as a function of the selected model Key Features Overcurrent and undervoltage supervision units. Breaker [...]

DCV – Busbar Protection Bay Unit + Capacitor Bank Protection

All protection, control and metering functions required by any Capacitor Bank or Reactance Bay, featuring also complete Bus Differential Bay Unit functionality DCV systems are designed for Substations where it has been planned or it can be planned in the future the installation of the Bus Differential Protection Unit. The reduction of the cost, due to the integration of the [...]

DRV – Busbar Protection Bay Unit + Feeder Protection

Integral Protection and Control Bay Unit as Terminal of a Distributed Bus Differential Protection The IED generically called DRV integrates protection, control and metering functions for a great variety of applications, such as feeders, machine lines, frontier points, etc. DRV systems are designed for medium voltage lines, transformers, generators and feeders in general where a complete protection of the position [...]

IRV-Z ·  Bus Differential / Feeder Protection Bay Unit

The IRV-Z integrates Protection, Control and Metering functions with the complete functionality of a Bus Differential Bay Unit IRV-Z systems are designed for medium voltage lines, transformers, generators and feeders in general where a complete protection of the position is required, in Substations where it has been planned or it can be planned in the future, the installation of the [...]

Breaker Protection

6MCV – Bay Control Unit

The ideal Complement to Protective Relays for Intelligent Management of Analog and Digital Signals 6MCV relays are the ideal support of protection terminals for intelligent management of a great number of analog and digital signals. There are provided both with local and remote control, graphic bay location, logics and communications. Key Features Programmable Logic. Versatility in communications. Supervision of switching [...]

6IRV – Bay Control and Breaker Management Unit

Integrated Solution for Control, Monitoring and Protection for Simple or Double Breaker Bays The IED generically designated as 6IRV combines all the necessary functions required for full control, supervision and protection of a breaker. These IEDs incorporates Breaker Failure protection, Recloser and Synchronism Supervision. Also, 6IRV relays incorporate backup protection units like Overcurrent, Over/Undervoltage, Over/Underfrequency as well as Control and [...]

Capacitor Bank & Reactance Protection

BCV – Capacitor Bank Protection IED

A Complete, Reliable and Economic Solution for most Capacitor Bank Protection and Control Applications BCV relays incorporate protection, control, and metering functions for capacitor bank and reactance applications combining the specific protection functions with complete bay protection in a single IED. Key Features Based on the latest digital technology and designed to provide maximum flexibility and versatility. Voltage unbalance protection [...]

Disturbance Recording.    Automatic Voltage Regulator (AVR)

6RTV – Automatic Voltage Regulator (“V” Platform)

AVR - Transformer Automatic Voltage Regulation and Control 6RTV units integrate power transformer voltage regulation (AVR) via tap changer control, maintaining the voltage within constant. It is of application when voltage must be kept within constant values with the transformer in operation. Key Features Automatic Voltage Controller (AVR) Tap changer. Remote Voltage Set-point Value Control. Current Compensation. Reactive Current Compensation. [...]

8PRN – Disturbance Recorder

A Compact Solution featuring up to 384 samples per cycle with Ethernet Accesibility 8PRN recorders cover oscillographic applications requiring very high performance signal acquisition and data storage, where the recording functions of digital relays do not meet the application requirements. A typical use of these recorders is in power generation where the frequency spectrum of the relevant events require extremely [...]

RTF – (AVR) Automatic Voltage Regulator – IEC 61850

Automatic voltage regulation (AVR) for up to 5 power transformers in parallel. Parallel transformer regulation by master-slave, circulating current and negative reactance methods. It also includes line voltage drop compensation. AVR Key Features Voltage Regulation. Maintains the transformer output voltage at the setpoint value, calculating the difference between the measured voltage and the setpoint voltage and comparing it with a threshold [...]

Industrial Relays

CPI – Overcurrent Protection

Overcurrent (Directional and Non-Directional) Protection Relay, Metering and Communications The CPI relays are applicable in all of those circuits (feeders, machines, transformers, etc.) where protection against overloads and short-circuits (between phases and to ground) is required. In systems with isolated neutral (67 NA), where high sensitive protection for faults to ground is needed, one directional protection unit is also recommended. [...]

FGI – Frequency Protection

Overfrequency and Underfrequency Protection, Metering and Communications Frequency is one of the defining parameters for "Power Quality" in electrical networks. During normal system operation (balanced generation and load) the power system frequency remains stable and usually very close to its rated value. When fault conditions are present or in this situations where the generation - load balance is disturbed, the [...]

TPI – Over / Under Voltage Protection

Over and Under voltage Protection Relay, Measurement and Communications Overvoltage and under voltage protections are usually inverse or definite time type, with tripping times between 0.2 and 20 s. Instantaneous trip is required in those cases where the magnitude of the overvoltages is considerable. TPI protective relays, are applicable in those installations requiring a reliable detection of voltage fluctuations. Key [...]

Trip Coil Supervision Relay.         Machine Protection Relays

MV

ADF – Advanced Directional Fault Detector

Compact RTU with advanced protection, automation, monitoring and distributed generation functions Designed to implement MV automation in RMU & recloser applications with different grounding method (grounded grids, ground isolated grids or compensated via Petersen coil). Key features IEC 61850 protocol used to share information via Goose Messages from one device to another. Coordination schemes supported. Software integration of the current measurement coming from Rogowski coil. Compatible with active [...]

IRS – Self-Powered Relay

Self-powered Overcurrent and Breaker Failure Protection Relay with Harmonic Blocking Where dependable auxiliary power source is not available, the IRS Relay can be energized either directly from Main Current Transformers, AC/DC Auxiliary Voltage or through the USB Front Port. To guarantee the correct operation of the relay, ZIV offers a bistable linear solenoid which perfectly matches the energy output of the IRS [...]

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