Protection Relays for Medium & High Voltage Distribution and Smart Grids

Download the Feature Comparison Table and select the relay that best suits your needs:

Protection Relays for Your Success

Fanox is specialized in the Design and Manufacture of Protection and Control Relays, becoming a leader in SELF-POWERED Protection Relays which allow to reduce considerably the maintenance of distribution centers.

The wide range of high-quality Protection Relays provides the solutions demanded by the market. Being evidenced by a successful proven experience and thousands of installed devices operating in harsh conditions for more than 20 years. High electromagnetic compatibility makes Fanox Relays the safest in the market. KEMA Certification proves it.

Our relays include the latest technology: SCADA communications, PC software, event recording, LCD, keyboard…

Overcurrent Self-Powered Protection Relays

AUTONOMY In terms of its products lines, Fanox feature internaltianally approved SIA-B and SIA-C Relays. These Self-powered Overcurrent and Earth-fault Protection Relays are designed to protect Secondary Transformer Stations and Distribution Centers of Electrical Networks with independence and free of maintenance.

FLEXIBILITY SIA-B and SIA-C have been designed with a very compact size, to cover all customer requirements and make installation easier, faster, economic and more reliable. Optionally you can have an auxiliary power supply in addition to self-powered function.

SIMPLICITY The SIA-B relay, as SIA-C, is Self-Powered from the power lines and both relays use STANDARD current transformers. The need for batteries and any maintenance is eliminated, reducing the operating cost of the center considerably.

KITCOM Additionally,  the equipment can be connected to an external portable accessory (KITCOM) for commissioning and setting up office through the front communication port. The possibility of powering up with the KITCOM accesory, offers the possibility to activate the trip contact from the test menu, allowing the verification of the circuit breaker before energizing the switchgear.

SIA-B Specific CT’s
Dual & Self-Powered OC&EF Protection Relays

Impeccably suited for protection in distribution as well as in Renewable Energy systems, SIA-B Protection Relay with specific CT’s, provides a comprehensive range of protection functions in an amazingly compact and lightweight housing, preventative maintenance, and remarkable cost savings.

Remote communications RS485 Modbus RTU

  • Self-Powered & Dual-Powered (Self+Vaux)
  • Low consumption
  • Wide protection range through the Sensors
  • Load data profiling
  • Disturbance fault recording
  • With internal commissioning battery as optional

Ansi Code Functions

50, 51, 51N, 49T, 50N, 49, PGC, TB

SIA-B Standard CT’s
Advanced OC&EF Self-Powered Relay

SIA-B is the most reliable dual powered (Self-Powered + Universal Vaux) relay offering a high performance previously available only in relays with Vaux:

Remote communications for SCADA (Modbus or DNP3.0 protocols)

  • Up to 10 COMTRADE records
  • Advanced protection functions
  • Completely configurable I/O thanks to advanced logic

Ultra-fast SOTF
Very low start-up levels and minimum consumption <2 VA
Compact design

Ansi Code Functions

50, 51, 50G, 51G, 49, 46, SHB, 49T, TB, 52, 50BF, CLP, 68, PGC

SIA-C Standard CT’s
Dual & Self-Powered OC&EF Protection Relays

Counting with an extensive experience of successfully operating devices in the field worldwide and thanks to these unique advantages, SIA-C enjoys top recognition among users all around the planet.

Above all, the different mechanics available by model list make our SIA-C the best choice for our customers, covering all the needs of the market

Remote communications RS485 Modbus RTU or IEC 60870-5-103

  • Self-Powered & Dual-Powered (Self+Vaux)
  • Standard CTs /1 or /5
  • Low start-up levels
  • Load data profiling
  • Self diagnosis (watchdog)
  • Non-volatile RAM memory (up to 1.024 events and 20 fault report), maintaining date & time even in SP mode, thanks to its internal RTC
  • With internal commissioning battery as optional
  • Withdrawable model as optional

Ansi Code Functions

50, 51, 49T, 51G, 50G, 46, 46BC, 49, SHB, CLP, 79, 52, 50BF, 74TCS, 60CTS, 68, PGC

Line Protection Relays

SIL-A Advanced (A/D) Models
Advanced Feeder Protection Relay

The SIL-A is an advanced and efficient Feeder Protection Relay with reliable overcurrent and earth fault protection for primary and secondary distribution, specially developed for compact MV switchgear

SIL-A has a design that requires less equipment and space, reducing operating costs and maintenance. The optimal design makes the useful life of the device longer and enhanced safety by reducing hazards. In addition to saving installation time. The perfect solution for renewable energy installations.

Intuitive and easy to use, SIL-A has flexible communications with multiple ports and protocols that allow seamless integration: RS485, IEC60870-5-103, Modbus RTU or DNP3.0, Modbus TCP/IP, IEC60870-5-104, RJ45, IEC61850

Ansi Code Functions

50, 51, 51N, 49T, 51G, 50N, 50G, SOFT, 46, 46BC, 37, 49, SHB, CLP, 79, 52, 50BF, 74TCS, 60CTS, 86, 68, PGC, TB

SIL-A (B/C) Models
Feeder Protection for Primary and Secondary Distribution

Fanox SIL-A Relay has been designed for overcurrent and earth fault protection. It takes a step forward in line protection, providing advanced communications and more protection functions such as auto-recloser.

Moreover, the ability to choose between standard /1 A or /5 A CTs easily by software, combined with more sensitive measurements, provides the flexibility and reliability you need for complete line protection.

Ansi Code Functions

50, 51, 51N, 49T, 51G, 50N, 50G, 46, 46BC, 37, 49, SHB, CLP, 79, 52, 50BF, 74TCS, 74CT, 86, 68, PGC, TB

Directional Protection Relay

Fanox SIL-D brings you all features included in our SIL-A relays adding the highly requested Neutral Directional protection function for an even wider protection.

 Therefore, SIL-D is designed for overcurrent and earth fault protection take a step forward in terms of line protection providing advanced communications and more protection functions such as auto-recloser. 

Most noteworthy like SIL-A, the ability of being able to choose between standard /1 or /5 CTs easily by software combined with more sensitive measurements provides you the flexibility and reliability you need for a complete line protection.

Ansi Code Functions

50, 51,  49T, 50N, 67N, 67N, CLP, 79, 52, 50BF, 74TCS, 86, TB, 59N, 67NI

SF6 & Metalclad Switchgear Protection Relay

Fanox SIA-F is our most competitive and cost-effective solution for overcurrent and earth-fault protection. Like all other Fanox protection relays the compact size with reduced depth makes it easier to install and saves costs.

Additionally  the use of external CTs allows you to modify their relation adapting to your requirements and reducing installation costs while having a wider range power supply.

Ansi Code Functions

50, 51, 50G, 50N, 51N, 51G, 52, 49T, 68, 86, CLP, 50BF, 49, TB

Voltage Protection Relays

Voltage & Frequency Protection Relay

The SIL-V is a voltage and frequency protection relay and represents the best and precise protection soluctions for transformers and electrical machines, in high, medium and low voltage distribution systems. Also protects decoupling, load shedding and loss of main (islanding).

  • Sf6 & metalclad switchgear protection
  • For transformers or electrical machines
  • High, medium and low voltage systems
  • For decoupling, load shedding and loss of main (islanding)
  • Recloser: 5 attempts

Ansi Code Functions

27, 27V1, 59, 47, 59N, ΔV/ΔT, 74TCS, BF, 52, 79, 81 U/O, 81R, 86, 78, 25

Feeder & Generator Protection Relays

Feeder & Generator Protection Relays are designed for effective protection of primary and secondary switching substations of electric distribution network. The protection features include protection against current, voltage, frequency, power, and including function as synchronism and autorecloser.

The protection functions can be enabled by using both the front panel and the communications link to the SICom program.

The combination of the available IEC and ANSI-IEEE curves and settings allows a precise coordination with other equipments.

For a complete information management, several communication protocols are incluided in this Relays.

SIL-A  / SIL D / SIL-V can be used as Generator Protection Relays too, depending on the applications requirements.

SIL-G Advanced
Feeder & Generator Protection Relay

Fanox SIL-G is a relay for primary distribution that can protect a feeder by means of current, voltage, and frequency functions.

The main features include Arc Flash Protection with 4 inputs and 4 high-speed outputs and choosing between universal supply and Self-Powered through VTs.

It also brings some innovative features such as a WIFI connection, providing you complete safety during maintenance.

Ansi Code Functions

50, 67, 50N, 50G, 67N, 67G, 49, 46, 46BC, 37, AFD, 59, 59N/G, 47, 59L, 27, 27V1, 27L, 32, 81U/O, 81R, 78, 24, 25, 49T, 52, 79, 50BF, 74TCS, 74CT, 60, SHB, CLP, 86, PGC

Generator Protection Relay

Overcurrent and overvoltage and frequency Protection. Feeder Protection for Primary Distribution

The ability of measuring current, voltage and frecuency levels combined with Syncro-Check and directional protection functions makes him one of the safest and most reliable choices for feeder protection.

Ansi Code Functions

50, 50N/G, 67, 67N, 46, 59, 59N, 27, 32/40, 79, 50BF, 52, 49, 86, CLP, 49T, 74TCS, 25, 81U/O, 37, IRG-B

Recloser Control Relays

SIR-B is the latest design advancement for Recloser Controls, taking particular care on simplicity and future upgradeability. It has a completely high-performance design  ready for the smart grid.

It is designed to be a flexible, easy to use control that has been built keeping in mind  the specifications of utility crews and field operators.

The intelligence that enables a recloser to sense overcurrents, select timing operation, time the tripping and reclosing functions, and finally lockout is provided by the recloser control.

SIL-G / SIL-A / SIL-B / SIL-V / SIL-D can be used as Recloser Control Relays too, depending on the applications.

Recloser Control

The innovative Fanox SIR-B Recloser Control presents an All in One solution designed to provide optimum protective coordination and the most effective fault clearance of distribution systems.

SIR-B includes the driving electronic and the trip capacitor. It can work with external battery or with internal super capacitors which allow the user to minimize the maintenance tasks.

It has designe to work with 3-phase reclosers, but it can provide single phase trips and reclose cycles, this is, it is provided with a monopolar circuit breaker control.

79 Protection Function (Recloser) allows up to 4 attempts of reclosing which can be programmed by the user.