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Automatic PF Correction Relays
Automatic PF Correction Relays
Trinity Energy Systems offers Automatic PF Correction Relays. This is used for true RMS measurement. This is a compact, cost effective APFC relay, which is packed with features and is extremely reliable. A field proven product, it is rich in features and ease of programming. The relay has in-built PF mode (FIFO), Binary (ascending steps control) as well as VAR (random switching) mode of operation to enable successful maintenance of PF under all load conditions. Features: available in 6 stage controls; FIFO, Binary and VAR option-site selectable; bright 16 digit LC display for ease of reading and programming; "no control" mode to enable panel manual operation; built-in display for volts, amps and PF; and no need to set % kVAR, C/K ratio, etc. Technical specifications: measurement system - the PF is measured for any one phase from the voltage sensed between phase and neutral and current in the same phase, using digital signal processing (DSP) methods; supply voltage - 230 V AC, 50 Hz nominal between phase and neutral; supply voltage range - 80 to 270 V AC; current - 5 A from CT secondary; output switching capacity - 5 A at 230 V AC resistive load; number of stages - standard 6 stages; target PF setting - from 0.8 (Lag) to unity in PF mode, and 0.8 (Lead) in VAR mode; reconnection time delay - settable at site, from 5 seconds to 120 seconds; minimum current - 5% of rated CT primary in PF mode, and 1.0% in case of VAR mode; mounting - flush mounted using clamps; size - 96 x 96 mm bezel, 92 x 92 mm cutout size, depth of installation - 95 mm including terminals.
