Capacitive Voltage Transformer ECF high voltage

Capacitive Voltage Transformer ECF high voltage

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Capacitive Voltage Transformer ECF high voltage,
Voltage transformers type ECF are used in high voltage networks,
within the 72-550 kV range.
They transform high voltage into standardised values for meters,
measuring and protection devices.

Features

  • Cost-effective and reliable Design for high and very high voltages
  • Expandable for the transmission of high-frequency Signals (TFH)
  • Fabrication-internal adjustment of the accuracy classes, no on-site adjustment is required
  • Temperature- and accuracy stable over the entire service life
  • Increased safety against relaxation oscillation due to damping unit

Technical data

Type ECF

72

123

145

170

245

300

362

420

550
Standard IEC / IEEE
Highest voltage for equipment kV 72.5 123 145 170 245 300 362 420 550
Rated power-frequency withstand voltage kV 140 230 275 325 460 460 510 630 680
Rated lightning impulse withstand voltage kV 325 550 650 750 1050 1050 1175 1425 1550
Frequency Hz 50 / 60
Accuracy class 0.1-3; 3P; 6P
Rated thermal limiting output VT part VA ≤ 1000
Max. simultaneous burden (cl. 0.2) VA 150
Max. number of VT windings 5

Type ECF

72

123

145

170

245

300

362

420

550
Height of unit* A mm 1660 1930 2130 2330 2930 3310 3510 4310 5110
Height to primary terminal* B mm 1520 1790 1990 2190 2790 3170 3370 4170 4970
Depth of unit including terminal box C mm 746 746 746 746 746 746 746 746 746
Depth of unit base D mm 500 500 500 500 500 500 500 500 500
Width of unit base E mm 500 500 500 500 500 500 500 500 500
Distance between screw holes at base F mm 450 450 450 450 450 450 450 450 450
Min. creepage distance*   mm 2420 3540 4280 5030 7260 7820 8560 11540 14520
Approximate weight*   kg 280 300 320 340 400 420 450 500 540

 

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