• a multi-processor digital measurement and decision-making system with three groups of protection settings;
• galvanic separation of individual inputs and outputs (analog and digital);
• 59 – eight overvoltage stages, one for each voltage group, with the possibility of individually setting the logic, voltage and time settings (8 x U>);
• 27 – eight undervoltage stages, one for each voltage group, with the possibility of individually setting the logic, voltage and time settings (8 x U<);
• ability to set the name, gear ratio and voltage type for each group independently;
• possibility of setting up to 8 operating systems with programmable names recognized by the machine;
• possibility of setting up to 50 different, fully programmable and independent cycles;
• possibility of setting up to 10 excitation conditions for each program determining the states of the switches, the states of the voltage elements and the PZ control;
• possibility of setting up to 10 steps for each program enabling control of any switch, control of the status of any switch and control of the status of any voltage component;
• the possibility of a programmable name, default and current state of the system, programmable cycle duration, return from an unsuccessful cycle, ignoring the lock on activation and the type of lock after the cycle for each program;
• the ability to automatically detect the reserve type or declare a dedicated type;
• monitoring the readiness and position of circuit breakers;
• functions of remote or local control of PSS cycles and locking and unlocking the machine;
• accurate and detailed signaling of machine errors and blockages locally and remotely;
• 74 – UP, AL station signaling functions;
• 30/74 – possibility of connecting external protection devices to binary inputs;
• 33 – bay controller function with presentation of the bay status on a graphic display with support for 15 fully programmable switches;
• permanent control of the correctness of the terminal’s internal systems;
• three levels of password-protected permissions;
• event registration and disturbance registration (8 voltages and 16 digital channels);
• function of synchronous sampling of analog inputs, time synchronization and real-time clock;
• measurement of the quantity – U and visualization on the controller display with the possibility of transmitting them to the system;
• switching counters and device operating times;
• detailed reporting of the switching process displayed on the display and transmitted to the system;
• graphic display and 11-button keyboard and 16 three-color LEDs (15 freely programmable);
• 32 logical functions with programmable modifiers to implement simple and complex algorithms;
• possibility of visualization, control and configuration via the SAZ 2000 program.

UTX3 devices enable communication in the following protocols:

• IEC 61850 – standard via the RJ45 Ethernet port implementing:
  • Fast Ethernet MAC/PHY (IEEE 802.3 10Base-T/100Base-TX compatible Supports full-duplex operation with IEEE 802.3x flow control and half duplex with backpressure)
  • QoS (Supports Quality-of-Service for port-based, 802.1p VLAN and IPv4 TOS/IPv6 COS packets with four priority queues Supports RFC2475 DiffServ-based)
  • VLAN (802.1Q tag-based VLAN function)
  • SNTP (RFC 2030, RFC 4330)
  • TCP/IP v4
  • Additionally, the RedBox redundant transmission module is equipped with:
    • 2 x IEEE 802.3 10Base-FX LC connector or optional 2 x IEEE 802.3 10Base-T/100Base-TX
    • PRP parallel redundancy protocol and HSR uninterrupted high availability redundancy – IEEE 62439-3,)
    • RSTP – IEEE 802.1w
• CCbus – standard via the RJ45 Ethernet port) communicating with:
  • SAZ2000 firmware,
  • XSerwer station concentrator,
  • local position (diagram),
  • other Computers & Control devices via AoE (Automatics over Ethernet)
• AAbus – optional – via OPTO interface (single or multimode) for communication with UTXvMSZ or UTXvMR protection,
• TRbus – OPTO interface (single-mode) for communication with the second half-set of UTXvZRP or UTXvRP protection,
• IEC 870-5-103 – optional – via OPTO interface (multimode)
• PPM2 CANBUS – optional – via interfaces: 2xCAN,