AC network insulation monitor SRI3/D2

DCAC/DCfor three-phase systems

881 / 5.000 Risultati della traduzione Risultato di traduzione SRI3/D2 - 2 thresholds - 2 Din modules SRI3/D2 is a device used for the permanent isolation check of single-phase or three-phase networks with neutral isolated from earth or without neutral. In the event of insulation loss, the instrument is able to give two different signaling levels (fault and alarm). The SRI3/D2 technology makes the measurement insensitive to DC voltage components present in the system. The insulation resistance measurement is carried out by applying an alternating voltage with an amplitude of less than 24Vp-p (in accordance with IEC61557-8) at a self-adaptive variable frequency. - control with variable frequency signal injection - mains to be controlled: AC/DC ≤400 Vdc/Vac – DC ≤420Vdc - 2 fault thresholds + alarm - Ran regulation: 20 KΩ ÷ 500 KΩ - led display - 2 independent NO-C-NC contactsesent in the system. - Aux power supply (Vac) 115/230 Vac Other caracteristics - programmable - modular - smart - configurable