Protective disconnection device - ساخ-ء

 Purpose

  P.D.D. of type ساخ-ء is designed using electricity service systems of house and industrial buildings and to provide electro- and fire-safety equipment and people in emergency situation in three-phase electrical network of alternating current with grounded the neutral with voltage 380/220V and nominal currents from 80 to 630 A.
 ساخ-ء are devices, controlled by differential current, what disconnect the control signal for disconnection protective circuit in case of excess given quantity by differential current.
   ساخ-ء are making protective disconnection in case as well as:
          - break phase wire on side of supply network;
          - single-phase asymmetric decreasing network voltage below 0,6Un or 0,75Un;
          - three-phase symmetric decreasing network voltage below 0,5Un or 0,75Un;
          - and execute additional protective function from overcurrent and short circuit current.
  Possible using area:
          - Protection electric network house, industrial buildings;
          - Protection single or group electro installation in building and industry, organized on temporary scheme;
          - Common protection air and cable line electricity service in this number, generate multilevel group protective system electricity service network.

Technical characteristics

Structurally ساخ-ء have unit designed in two variants:
      Differential switch (ساخ-ء in complete with automatic switch) in composition:
              - electronic unit;
             - gauge unit;
             - automatic switch with independent uncouple.
       Differential relay (ساخ-ء in control relay variant) in composition:
          - electronic unit;
          - gauge unit.

Other characteristics
Nominal load current, A 80, 100, 160 for model 1
200, 250, 320 for model 2
400, 500, 630 for model 3
Nominal voltage, V 380/220
Nominal frequency, Hz 50
Nominal disconnecting differential current, A 0,1; 0,3;  0,5;  1,0;  3,0
Nominal voltage auxiliary power supply (supply from protective network), V
frequency, Hz 		380/220
50
Nominal connection and disconnection cabable, A from 1000 to 10000
Disconnection time from differntial current, s 0,1;  0,2;  0,3; 0,4;  0,5
Disconnection time in decreasing network voltage, s 0,1; 0,3; 0,5; 0,8; 1,0
Power consumption,not more, W 3
Temperature operating range, C from -40 to +50