DISCONNECTOR DFM 3000A 40,5KV 3P

1. TECHNICAL DESCRIPTION 1.1 DISCONNECTOR TYPE DFM 3000A 40,5KV 3 POLES "FI" series disconnectors indoor type. The blades have multiple contacts and every contact point is independent with pressure springs with gauged load. This solution assure working conditions with heating well below the limits indicated by the standards. All the main contacts are in high-conductivity strongly silver-plated copper to give long-term constant contact resistance. ▪ Rated voltage 40,5kV ▪ Impulse voltage withstand phases to earth 180kV ▪ Impulse voltage across the isolating distance 200kV ▪ AC voltage withstand phases to earth 90kV ▪ AC voltage withstand across the isolating distance 105kV ▪ Rated current 3000A ▪ Short-time withstand current 1 Sec. 25kA ▪ Short-time withstand current peak value 62,5kA ACCESSORIES: ▪ Right side manual operating mechanism type M2/MT ▪ Left side motor operating mechanism 220Vdc ▪ Upper side simultaneous earthing blades 25kA ▪ N. 2 Key locks for the disconnector ▪ N. 2 Key locks for the earthing blades ▪ Auxiliary contacts: 6NO+6NC for the disconnector ▪ Auxiliary contacts: 6NO+6NC for the earthing blades ▪ N. 1 adjustable transmission rod mt. 1 NC 100036 ▪ N. 2. Handle shaft extension mt. 0,5 NC 100035 ATTACHED DOCUMENTATION: - 20608002: DFM 3000A 40,5kV 3 poles with simultaneous earthing blades overall dimension - 1011: manual operating mechanism type M2/MT.