Monitoring technique Phase sequence relay MK 9056, MK 9056N varimeter According to IEC/EN 60 255, DIN VDE 0435-303 Detection of wrong phase sequence 2 changeover contacts 2 Wire connection: also 2 x 1.5 mm stranded ferruled, or 2 2 x 2.5 mm solid DIN 46 228-1/-2/-3/-4 MK 9056N as option with plugable terminal blocks for easy exchange of devices - with screw terminals - or with cage clamp terminals Width 22.5 mm MK 9056 MK 9056N Approvals and marking Options with plugable terminal blocks * * Canada Canada / USA * see variants Applications The MK 9056 and the MK 9056N detects wrong phase sequence in Terminal block 3-phase systems. with cage clamp terminals To monitor phase failure it is more suitable to use an Asymmetry relay (PC / plugin cageclamp) e.g. MK 9040N. Function diagram U L1 t Terminal block U with screw terminals MK N P L3 (PS / plugin screw) L2 Notes U Removing the terminal blocks with cage clamp terminals L2 L3 1. The unit has to be disconnected. 2. Insert a screwdriver in the side recess of the front plate. 3. Turn the screwdriver to the right and left. 4. Please note that the terminal blocks have to be mounted on the 11-14 belonging plug in terminations. 11-12 M6051 b Circuit diagram L1 L2 L3 L1 L2 L3 L1 L1 L2 11 21 L1 L1 L2 11 21 L3 L2 L3 12 14 22 24 L3 L2 L3 12 14 22 24 11 12 14 11 12 14 M7284 b M8156 a 21 22 24 21 22 24 MK 9056.12 MK 9056N.12 All technical data in this list relate to the state at the moment of edition. We reserve the rigth for technical improvements and changes at any time. MK 9056, MK 9056N / 05.09.08 e 1 Now with selectable Plugin technology 0225105 Technical Data Technical Data Input Wire fixing: Plus-minus terminal screws M 3.5 box terminals with wire protection or Nominal voltage U : 3 AC 42 ... 60 V, 100 ... 127 V cage clamp terminals N 3 AC 230 ... 240, 380 ... 500 V Mounting: DIN rail IEC/EN 60 715 Voltage range: 0.9 ... 1.1 U Weight: 140 g N Nominal frequency of U : 50 / 60 Hz N Nominal consumption: approx. 2 W Dimensions Output Width x height x depth: MK 9056: 22.5 x 82 x 99 mm Contact MK 9056N: 22.5 x 90 x 97 mm MK 9056.12, MK 9056N.12: 2 changeover contacts MK 9056N PC: 22.5 x 111 x 97 mm Operate / release delay: < 100 / 50 ms MK 9056N PS: 22.5 x 104 x 97 mm Thermal current I : 5 A th Switching capacity Standard type to AC 15: NO contact: 3 A / AC 230 V IEC/EN 60 947-5-1 MK 9056.12 AC 380 ... 50 V 50 / 60 Hz NC contact: 1 A / AC 230 V IEC/EN 60 947-5-1 Article number: 0028411 stock item Short circuit strength Output: 2 changeover contacts max. fuse rating: 4 A gL IEC/EN 60 947-5-1 Nominal voltage U : AC 380 ... 500 V N 6 Mechanical life: > 20 x 10 switching cycles Width: 22.5 mm General Data MK 9056N.12 AC 380 ... 500 V 50 / 60 Hz Article number: 0054183 stock item Operating mode: Continuous operation Output: 2 changeover contacts Temperature range: - 20 ... + 60C Nominal voltage U : AC 380 ... 500 V N Clearance and creepage Width: 22.5 mm distances rated impuls voltage / Variant pollution degree: 4 kV / 2 IEC 60 664-1 EMC MK 9056.12/60: with CSA approval Electrostatic discharge: 8 kV (air) IEC/EN 61 000-4-2 MK 9056.12/61: with UL approval HF irradiation: 10 V / m IEC/EN 61 000-4-3 Fast transients: 2 kV IEC/EN 61 000-4-4 Ordering example for Variant Surge voltages between MK 9056N.12 PS / 3 AC 380 ... 500 V 50/60 Hz wires for power supply: 2 kV IEC/EN 61 000-4-5 between wire and ground: 4 kV IEC/EN 61 000-4-5 Nominal frequency Interference suppression: Limit value class B EN 55 011 Nominal voltage Degree of protection Variant, if required Housing: IP 40 IEC/EN 60 529 Type of terminals Terminals: IP 20 IEC/EN 60 529 without indication: Housing: Thermoplastic with V0 behaviour terminal blocks fixed, according to UL subject 94 with screw terminals Vibration resistance: Amplitude 0.35 mm, PC (plugin cage clamp): frequency 10 ... 55 Hz, IEC/EN 60 068-2-6 plugable terminal blocks Climate resistance: 20 / 060 / 04 IEC/EN 60 068-1 with cage clamp Terminal designation: EN 50 005 terminals Wire connection DIN 46 228-1/-2/-3/-4 PS (plugin screw): Screw terminals plugable terminal blocks 2 (integrated): 1 x 4 mm solid or with screw terminals 2 1 x 2.5 mm stranded ferruled or Contacts 2 2 x 1.5 mm stranded ferruled or Type 2 2 x 2.5 mm solid Insulation of wires or sleeve length: 8 mm Plugin with screw terminals max. cross section 2 for connection: 1 x 2.5 mm solid or 2 1 x 2.5 mm stranded ferruled Insulation of wires or sleeve length: 8 mm Plugin with cage clamp terminals max. cross section 2 for connection: 1 x 4 mm solid or 2 1 x 2.5 mm stranded ferruled min. cross section 2 for connection: 0.5 mm Insulation of wires 0.5 or sleeve length: 12 mm E. DOLD & SHNE KG D-78114 Furtwangen PO Box 1251 Telephone (+49) 77 23 / 654-0 Telefax (+49) 77 23 / 654-356 e-mail: dold-relays dold.com internet: