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Products - Circuit Breaker - AW45 Intelligent Circuit Breaker

AW45 Intelligent Circuit Breaker

4. Intelligent controller
   Intelligent controller is one of the core components of the circuit breaker
   4.1 properties of the intelligent controller
      a. Protective function of over-load long time-delay and inverse time limit, short time-delay and inverse time limit, short time-delay definite time limit instantaneous operation protection;
      b. Single-phase earthing failure protection;
      c. Display of setting current Ir and operational current;
      d. Ampere meter;
      e. Over-load alarm;
      f. Short-circuit alarm
      g. Testing of operational properties
      Note: The breakers with telecommunication port are available to realize remote control to breaker through master computer.
   4.2 Protection performances of over-current release
a. Ir and its inaccuracy of the controller

Inm(A)	Long time-delay		Short time-delay		Instantaneous		Earthing failure
Inm(A)	Ir1	Error	Ir2	Error	Ir3	Error	Ir4	Error
≥ 2000	(0.4~1)In	±10%	(0.4~15)In	±10%	1.0In~15kA	±15%	Inm ≤ 4000A(0.2-0.8) In (Max.1200A.Min.200A) Inm ≤ 6300A(0.2-1.0) In	± 10%

Note: 1.When the breaker could realize over-load with long time delay .short-circuit with short time-delay and short-circuit instantaneous protections, the setting ratings can not be over-lapped ,and Ir1< Ir2< Ir3
2. When the frame is 3200A and above ,the setting ratings range from 1.01In to 75kA.

b. Characteristics of long time-delay protection

   c. Characteristics of short time-delay protection.
    For low over-current ,inverse time-limit protection could be realized; when the over-current is >8 Ir1, it will automatically change to be definite time-limit protection properties.
   Refer to table below for time-limit properties.

5. Standard composition
To facilitate your ordering and utilization, the AW45 intelligent with basic electric accessories as follows.

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Arc Welder & Cutter

Circuit Breaker

Contactor

Indicator

Meter

Power Supply

Relay

Starter

Switch

Transformer

Other

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