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Products

PFC1729

The relay is meant for flush mounting in a panel for connection to the electrical system.The relay is the ‘intelligence’ which controls the automatic system for correction of the power factor. It senses the power factor by taking the ratio of the KW and the true rms KVA of the system, for any phase to neutral or phase to phase connections of the three phase electrical system.

This means that phase to neutral or phase to phase are connected to the meter as voltage inputs and current of the same phase or different phase as current input. For correct operation of the relay, however there are some minimum requirements should be met.

Unless the various points in the system which are mentioned below are correctly setup, proper operation of the relay cannot be expected.

Features

  • All readings are true RMS measurements
  • Site selectable 1A or 5A CT secondary
  • Automatic power factor control through system PF.
  • Programmable target PF setting (from 0.800 to 1.000 LAG or LEAD)
  • Programmable Time delay for step switching (Normal: 40-300, Fast: 1-10 Sec)
  • Stage wise LED indication
  • Auto/Manual mode selection through programming mode
  • Normal/Fast switching control action is site programmable
  • Alarm and tripping indication for over/under compensation and over/under voltage respectively
  • Installation selection for phase to phase(L-L) or phase to neutral(L-N) input is site selectable
  • Control action with/without capacitor CT is site selectable
  • Switch ON/OFF banks manually in manual mode only
 

Specifications

Parameters
Type Name Statistics
Input Power Supply Auxiliary Supply : 80 - 500 VAC, 50-60 Hz.
Voltage Direct Voltage Input : 50-300V L-N & 50-500V L-L
Burden : 0.5VA
Current Secondary Current Input : 5A or 1A (Site Selectable)
CT Ratio: Site Selectable
Range of Reading : 5 - 9995A
Burden : < 1.0VA
Overload: 5A CT = 6A RMS Continuous 1A CT = 1.2A RMS Continuous
Output Relay Switching Voltage : Max. 230 VAC
Switching Power: Max. 1000W
Expected Mechanical life : >10 x 10^6 switching operations
Expected Electrical life:>4 x 10^6 switching operations@(Load = 200VA, Cosφ=0.5)
MEASUREMENT True RMSBasicParameters Capacitor Current CT Primary : Site Selectable
Range of reading : 5 – 9995A
Accuracy : 1.0% of Reading
Power Factor Accuracy : 1.0% of Reading (IPFI ≥ 0.5)
MISC. Dimensions Bezel 144 X 144 mm
Panel Cutout 138 X 138 mm
Depth of installation 55 mm
Operating temp 10°C to 50°C
Weight 0.560 Kg. (Approx.)
Min. Operating Current 5% of CT Primary in FIFO/SFIFO mode