PLC Technology
Optical monitoring systems

TOPAZ OCTU Current Control System

The TOPAZ OCTU Current Control System is designed for continuous monitoring of alternating current in conductors, checking the integrity of the measurement path and generating alert signals in a timely manner when a threshold electric current value is exceeded, or in the event of measurement path failure, as well as for measuring the frequency and phase shift of the currents.
Benefits of the current monitoring system:
•    Compact size: the device can fit into existing racks
•    Powerful laser: the sensors can be located in cable line shield cross connection manholes at a distance of up to 5 km from the modules
•    Passive sensors: no power supply required
•    Suitable for digital substations.
  • Specifications


Feature Value
Current measurement channels
Number of channels 3
Type of current sensor interface ports LC (single-mode fiber)
Max fiber-optic line length, km up to 5
RMS current, A up to 1000
Frequency, Hz 30…3000
Ethernet interface
Baud rate, Mbit/s: 10 / 100
Connector type RJ-45
Data exchange protocols IEC 60870-104; SV 61850-9-2 (optional)
RS-485 communication interface
Baud rate, bit/s: up to 115,200
Data exchange protocol IEC 870-5-101
Power supply
Rated supply voltage, V 24 (DC)
Operating supply voltage range, V 9 ÷ 58
Current consumption (at 24 V), mA 100
Mounting type DIN rail 35 mm
Case IP 20 plastic
Module dimensions (width х height х depth), mm 22.5 x 99 x 117
Weight, kg 0,5
Operating conditions and reliability
Operating temperature range, °C: from -60 to +70
Mean time between failures, h 140000
Average service life, years 30
Back to TOP