Synchro-Check ( parallelling ) Relay

Synchro-Check ( parallelling ) Relay

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  • Model:

    256-PLL , 256-PLD

  • Request Code:

    256-PLL , 256-PLD

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The synchro-check relay can be used to assist in the semi-automatic parallelling of two AC power systems . The volt-free relay contacts change state when the voltage level, phase relationship and frequency are within the selected synchronising limits . Connecting two electrical systems that are not closely matched can cause expensive damage and disturbance to the electrical system. Using this relay will ensure that damage will not occur . Other features of this device are : - Single phase or three phase, 3 or 4 wire - Live and dead bus versions - Adjustable setpoint - LED trip indication - Volt free relay contacts Bornika is the exclusive agent of Ziegler company in the fields of consultation , sales and distribution of power industry products including Synchro-Check (parallelling) Relay .

  • Output 1 pair NO (normally open), 1 pair NC (normally closed) 2 pair NO and 2 pair NC (available on request)
  • Frequency Range 45 , 50 , 55 , 60 , 65 Hz
  • IP IP50
  • Dimensions 150x70x112 mm
  • Nominal Voltage 100V, 110V, 120V, 208V, 220V, 230V, 240V, 277V, 380V, 400V, 415V, 440V , 480V
  • Burden Bus : 2VA , Generator : 4VA
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More Details
  • Synchro-Check (parallelling) Relay
  • 256-PLL : The relay continuously monitors the voltage, phase displacement and frequency of two supplies. A single setpoint adjustment permits selection of suitable matching , and a red LED illuminates when the relay is energised , indicating that the two supplies are well matched and it is safe to close the breaker. 256-PLD : This version operates in the same way as model 256-PLL , but includes an additional dead bus detection function. If there is a requirement for a continuous supply or emergency power, then the generator can be connected without synchronising, thus ensuring continuity of supply . The absence of bus voltage will cause the relay to energise . - Operating temperature : 0°Cto +60°C - Material : Flame retardant polycarbonate/ABS - Enclosure style : DIN-rail with wall mounting facility Applications : Marine panels , Switchgear , Distribution systems , Generator sets , Co-generation , Control panels
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