Alternative solution for metering and protection devices compatible with lo-po instrument transformers. typically recommended in installation conditions where the output cable is long or multisignal, or when the rated burden is too high. the active version is needed when the relay / meter cannot integrate the signal from the passive current sensor (rogowski coil).

very low voltage signals proportional to the primary voltage and / or current. features: high linearity, accuracy class up to 0,5 in the operating temperature range, analogue calibration in factory, compatible with output cables up to 100 m, no significant influence of the secondary burden. limits: auxiliary power supply needed, wide dinamic range but limited by the electronic circuit, rated frequency only.

Rated insulation level 27/60/150
Accuracy class *
For protection 3P
For measurement 0.2 or 0.5
Rated primary voltage, Upn * 27/√3 kV
Maximum voltage, Um 27 kV
Rated secondary voltage, Usn * 3,117 V
Rated voltage factor, Ku 1,9 for 8h
Nominal frequency * 50 / 60 Hz
Nominal transformation ratio, Kn * 1/5000
Supply voltage 12 to 36 Vdc
Max. Supply Current 100 mA
Creepage 720 mm
Primary terminal capacity 7 pF
Weight 2,25 kg
Applicable Standards IEC 60044-7
Bandwidth (-3 dB) 30 Hz – 100 kHz
Accuracy on harmonics According to IEC 60044-8
Operating temperature range [-40; +65] °C