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TOR 300 series IED

Platform TOR 300 includes full range of relay protection, automation and control IEDs for applications in electric power systems. Modularly designed hardware and software platform TOR 300 and its suitable engineering tool offer a wide product range for every application and requirement. This modern PAC devices provides full-scheme protection and incorporates all functions usually required for the protection of MV, HV, EHV and UHV transmission grids. TOR 300 IEDs are designed for fast and selective fault clearance on different elements of a transmission grid. Each line protection IED is suitable for single and/or three-pole tripping applications with or without pilot teleprotection schemes.

System integrity protection scheme (SIPS) can be created on IEDs for power system stability as well. Different functions for system stability and automatic control are designed for these purposes and can be implemented in stand-alone system integrity devices or be a part of relay protection devices.   

TOR 300 platform allows using corresponding IEDs also for power generation objects – hydro, thermal, nuclear power plants as well as distributed power generation. Verified protection algorithms provide fast and selective fault clearance inside the protection zone of small and big generators, different generator-transformer-auxiliary transformer- excitation transformer groups, etc.

All TOR 300 IEDs have an extensive communication functionality which makes them an integral part of existing digital protection, automation, and control systems according to IEC 61850 standard.
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TOR 300 platform allows reliable protection, automation and control of  MV, HV, EHV and UHV power systems, to combine main and backup protection functionality in a single device. It also provides a lot of additional functions, such as fault location, remote and local breaker control, LED signaling, disturbance and event recording, non-commercial energy measuring, etc.


Each TOR 300 terminal is freely programmable. Functional logical diagrams have been developed with the use of graphical programming tool allowing for configuration of binary inputs and outputs, analog inputs, control buttons, LEDs, disturbance recorder, event recorder, user interface. Freely programmable logic makes it possible to modify typical functional logical diagrams considering a peculiar nature of the protected object. Four basic types of standard 19" case allow the user to choose the most appropriate solution.


The terminals can be applied on substations with AC, rectified AC and DC auxiliary voltage. Operating auxiliary voltage range is between 88 … 242 V of DC, 50 Hz or 60 Hz AC selectable by the user. Low power consumption, not sensitive to auxiliary power interruptions, wide temperature range from -40 °C to +55 °C  - these are some main properties of TOR 300 devices.


TOR 300 has built-in internal continuous self-supervision and fault detection functions which, being activated, enable detecting and alarming (input signal, LED indication) internal faults. TOR 300 ensures no false connection of output relay contacts when energizing and/or disconnecting auxiliary power supply source (regardless the duration of power supply interruption). The terminal enclosure provides high protection degree according to IEC 60529.


Implementation of various communication protocols, such as IEC 60870-5-103, IEC 60870-5-104, ModBus-RTU, Modbus-ASCII and IEC 61850-8-1 (MMS, GOOSE), ensures integration of the terminal into substation monitoring and automated process control system, as well as provides data changing with other devices. Standard  IEC 61850-9-2 allows connection to “digital (low power or non-conventional)” current and voltage transformers as well as to Merging Units. Built-in optical or HF-ports allow implementing different types of differential or pilot-wire protections (optical line current differential, HF-carrier aided directional and others). 

Protection, automation, control, monitoring and measuring devices for different primary equipment:

  • transmission cables and overhead lines

  • two winding, three winding transformers

  • autotransformers

  • different types of reactors

  • busbars

  • capacitors banks

  • generators

  • generator- transformer

  • etc.

Analog CT an VT input circuits

Flexibly adjustable quantity of input CTs, VTs within the scope of application:

  • 12 - typical application in ¼  x 19’’ housing

  • 16 - typical application in  ½  x 19’’ housing

  • 48 - extended application in ¾  x 19’’ housing

  • 48 - extended application in 19’’ housing

Binary input and output circuits

  Flexibly adjustable quantity of BIs/BOs within the scope of application

  • 8 to 140 binary inputs

  • 5 to 137 binary outputs

Housing width

  • ¼ x 19"

  • ½ x 19"

  • ¾ x 19"

  • 19"

Environmental conditions

  • operating temperature range from - 40 °С to +55 °С

See more in Technical specifications  manual

  • One platform – a high number of different applications 

  • Fast and reliable protection algorithms

  • User-friendly configuration tool

  • Interoperability with third-part SCADA according to IEC 61850 standard and protocols

  • Extreme environmental immunity 

To be advised


    ТОР 300 1_4 TFT.jpg     

       ТОР 300 1_2 TFT.png 

ТОР 300 3_4 OLED.png

ТОР 300 1 OLED.png

Bi-colour LED quantity (without button LEDs)


27 / 35



HMI control buttons, RESET button





Switching devices control buttons





Programmable control buttons quantity


13 / 16



Display type





Analog inputs quantity, max





BI quantity, max





BO quantity, max





Send us a message and our engineers will promptly answer all your questions.
Send a message and our engineers will promptly answer all your questions.
Send us a message and our specialists will promptly answer all your questions.
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