Up to 2 stages and possibility for switching ON or OFF for each stage separately
Possibility for UVP function blocking at voltages, beyond the setting range
Possibility for UVP function blocking through the binary input (at operation of TOC or distance protection on 110 kV level for example)
Under voltage elements (UVE)
Type: phase-earth or phase-to-phase UVE
Total number: 3 pcs. for each stage
Setting range (for each stage separately): (0,5 ... 1,2).Un
Accuracy: 3 %
Reset ratio: 0,95
Operating time of the UVP: < 30 ms
Time delay
Setting range (for each stage separately): 0,00 ... 10 s
Accuracy: ±0,5 % of the set value, but not less than 10 ms
Upper voltage limit for blocking of the UVP: 0,5 ... 1,3 Un
Lower voltage limit for blocking of the UVP: 0,05 ... 0,6 Un
Time delay for blocking through dedicated binary input: 0,00 … 1,00 s

The function can be used for ground fault control function for middle voltage feeders
Up to 2 stages and possibility for switching ON or OFF for each stage separately
According to configuration the RVP function can measure directly, by using of allocated analogue input, or calculate, by sum the three phase voltages, the zero sequence voltage 3Uo of the protected object
Over voltage elements (OVE)
Setting range (for each stage separately): (0,05 ... 1,40).Uon
Accuracy: 3 %
Reset ratio: 1,05
Operating time of the RVP:< 30 ms
Time delay
Setting range (for each stage separately): 0 ... 10 s
Accuracy: ±0,5 % of the set value, but not less than 10 ms

Each protection function can be switch-ON or switch-OFF.

The event recorder memory buffer is designed for up to 2000 records.
Each of the records consists of information about the event type, the real time of its appearance (year, month, day, hour, minute, second, second/1000) and in certain cases – some numerical data characterizing the process recorded.
The information recorded is stored in non-volatile memory and can be shown on the device’s display and/or memorized on the PC running the MMI program.
In the unit’s memory the stored event can be found and displayed using the following attributes:
Last stored event
The events stored during the last hour
The events stored during last 24 hours
The events stored during the last month (up to the same moment in the previous month)
The records stored during the chosen day

The device can be connected to Work Station in SCADA-system by means of local network. The network is based on RS485 or fiber optic – the respective interface connector is used. The communication protocol is IEC 60870-5-103 / IEC 61850. The device’s data acquisition and remote control functions are performed by means of work station – measuring, signaling, remote control (opening or closing command to the circuit breaker, disconnecttors, earthing switch).
Additionally by work station facilities the device can be configured its settings parameters, can be read and corrected and all stored into unit’s memory data can be archived. Also all data stored by means of “Disturbance recorder” and “Event recorder” functions can be transferred and archived into WS for farther analysis.

Device’s HMI interface is situated on the front panel. It consists of:
LCD display – 2 rows, 16 characteristics each. The display has back light illumination
Indication zone of 9 LED’s (green LED “READY” and 8 red colored S1 – S8 which are free configurable)
Screen blinkers (7 pcs) free configurable
Functional keypad comprising 10 push buttons
PC optic interface zone for positioning of specially designed connection cable

The MMI program is a 32-bit application intended to work under WINDOWS® operational system. The connection between the device and PC running MMI software is done trough RS232 interface by means of specially designed connection cable. The PC interface cable can be connected to PC COM port or to USB port through RS232-USB converter. The connection is fully isolated.
The PC interface cable can be connected to the device in one of two ways: by the serial port CANON 9 type positioned on the left side of the device or by the serial port positioned on the front side of the device (by means of magnet – optical head).
The PC based MMI program is designed to make the configuration and setting of the relay easier. It can fulfill the following functions:
Reviewing, changing, saving and setting of the relay configuration and settings;
Reviewing and saving of information from event recorder and disturbance recorder;
Remote commands such as: changing of the working setting group; synchronizing of the real time clock; LED indicators acknowledgment; clearing of the events stored into the device’s memory; changing the CB life time ect.;
Remote control of the main measuring possibilities of the relay – analogue and binary outputs and LED indicators ;
Analysis and documentation of system faults;
Printing of the setting parameters, configurations, recorded events and distur-bance data saved into the relay memory.

Download MMI program