Line matching unit tunable ULS-P

        Line matching unit tunable “ULS-P”

        (universal tunning device)


        Line matching unit tunable (“ULS-P”) together with coupling capacitors or capacitive voltage transformers is a transformer bandpass filter circuit or high pass filter. Device provides coordination of the wave impedance of high-frequency subscriber equipment and high-frequency communication channel formed by high-voltage wires, cables, ground wires in the nominal frequency band.

        The device “ULS-P” was created for work on power lines with voltage from 35 to 750 kV and ground wires cables.

        The main feature of “ULS-P” is the possibility of its reconstruction at the facility when changing the capacity of the connection and / or working frequency range.

        «ULS-P» able to solve problems, which today to solve the line matching unit «LMU5000» (Areva T&D, France), BLM (Tesmec S.p.A, Italy), UAPA-1 (ZIV, Spain), MCD80 (ABB Ltd., Germany), SCA/SGA (Selta S.p.A., Italy) and others of similar purpose.

It is manufactured on a modern technical basis, with tendency development and the needs of the energy industry.

The transformers that are part of the device are manufactured on modern high-quality ferrite cores.

The tunable linear matching unit can be equipped with a single-pole disconnector, which performs the functions of a grounding knife.

The tunable line matching unit are designed for high-frequency power of ?200 W


Characteristics Value
Connection type «phase-to-ground», «phase-to-phase»,  «two phase-to-ground»
Frequency range 24 – 1000 kHz with tunable subranges (depends to the capacity connection)
Connection capacity 2 – 14 nF (2000 – 14000 pF)
Nominal impedance (power line side) 180 – 450 Ohm
Nominal impedance (PLC equipment side) 75, 150 Ohm
Composed attenuation within subbands ? 2 dB
Return loss within subbands ? 12 dB
Power rating (РЕР) 200 W
Rated current of the disconnector 300 A
Distortion and intermodulation Better than 80 dB at appropriate РЕР (IEC 481, cls. 9.6)
Resonant circuit third-order high-pass filter; second-order band-pass filter
Temperature and humidity - 40°С … +70°С and relative humidity not greater that 95% (IEC 870-2-2, class C3)
Dimensions 430х400х190 mm
Weight 10 kg

        Delivery are carried out in the shortest times.

       Coupling capacitors SМ, tuning devices ENU, line traps VZ, cabinets of voltage selection ShON, as well as PLC equipment manufacturing by «Iskra» ЕТ9, anty emergency automation equipment DPA, teleprotection equipment DZ9, PVZ, PVZ-VL can be included in the supply.