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YCU-B Type Controller

Brief functional Introduction of YCU-B Controller

  • Adding over voltage detection of two-path power
  • Providing generators start signal (delayed about 3 S to issue when a main power fails), When you order,please indicate electricity grid Generators.

Main characteristics:

  • Adopt single chip to stop program control ;
  • Logical program and electric dual linkage;
  • Compact design make it available to be placed in switch cabinet panel for observation, operation and running;
  • A strong anti-electromagnetic interference performance;

YCU-B-type controller connection terminals diagram:

  • a. A1, B1, C1, N1 connect three-phase four wire system of main power supply , if connected three-phase three wire,N2 grounding
  • b. A2,B2,C2,N2 connect three-phase four wire system of stand-by power supply, if connected three-phase three wire,N2 grounding
  • c. When L1 connects the main power phase A through the auxiliary contact in the switch, the main power will close.
  • d. When L2 connects the stand-by power phase A through the auxiliary contact in the switch, the stand-by circuit will close.
  • e. M1, M2, M3, M4 are switching out-put terminals.
  • F, F1, F2 are generator start signal output terminals, F is the public terminal, when the main power is normal, F will closes with F2, F and F1 disconnect ;when the main power become abnormal and the stand-by power has no power , F and F1 will close after three seconds , while F and F2 will disconnect.

YCU-B controller N type wiring diagram:

YCU-B controller M type wiring diagram:

YCU-B controller Q type wiring diagram: