Air Circuit Breakers

RDW1 (DW45) Series

General

RDW1 Series circuit breaker is mainly used in rated service current up to 6300A of distribution networks to distribute electric energy and protect lines.

● AC rated current: 630-6300A;

● Short-circuit breaking capacity: 80kA-120kA;

● Rated working voltage below AC690V;

● Both the 3 poles and 4 poles are available;

● Two types: Draw-out type and fixed type;

● Equipped with many types of intelligent controllers with different functions;

● Standards: IEC60947-2, GB14048.2.

Model

Operation Conditions

● When the ambient air temperature is -5°C to +40°C, the mean value is no greater than +35°C within 24 hours.

● Altitude: not higher than 2000m for the installation site.

● When the ambient air temperature is +40°C, the relative humidity of the air shall not be higher than 50%; a higher relative humidity is allowed at a lower temperature; for example, for the wettest month, the maximum relative humidity averaged shall be 90% while the lowest temperature averaged in that month +20°C, and special measures shall be taken for the condensation occasionally produced due to temperature change.

● Pollution grade: Class 3.

● The installation category of the breaker's main circuit is IV and the control circuit and auxiliary circuit being III.

● The circuit breaker should be installed according to the manual.The vertical tilt angle should not exceed 5°.

● If the air circuit breaker is installed in a small compartment of the switch board, the protection grade is up to IP40.

RDW1 (DW45) Series

Feature

a. Intelligent controller types: H type (communication type), M type (standard type), L type (economic type), 2M type (high immunity type) and 2H type (high immunity communication type);

b. It have overload long time-delay, short circuit short time-delay and short circuit instantaneous functions;

c. Single-phase earthing fault protection;

d. Display function: setting current display, action current display and each phase voltage display (the voltage display should be informed when ordering);

e. Alarm function: overload alarm;

f. Self checking function: overheat self checking and micro self checking;

g.Test function: Action characteristics of test controller.

Main Technical Parameters

RDW1 (DW45) Series

Main Technical Parameters

Note: The capacity-reducing factor is 0.9 for above 2500A.The 4000A of 6000A is not reducing capacity.

RDW1 (DW45) Series

Product Structure

M Type Controller

① Reset key

② Current (voltage), time indicator

③ Select key

④ LED indicator

⑤ Clear LED key. After the setting, testing and fault checking of the controller, make the circuit breaker at normal operation.

⑥ Setting key

⑦ Fault checking key.After the breaker tripping, press this key to indicate the kind of fault.

⑧ Tripping and Non-tripping key

⑨ Storage "+" "-" key

Is short time-delay current setting value Ts short time-delay time setting value

Ii short circuit instantaneous current setting value

Ig earthing current setting value Tg earthing time setting value

Ir long time-delay current setting value Tr long time-delay time setting value

L Type Controller

① Reset key

After the breaker tripping, press it to switch the breaker.

② Unload indicator

Indicate overload long time-delay current

③ Long time-delay, short time-delay, instantaneous and earthing protective current setting key

④ Fault indicator key Indicate the kind of fault

⑤ Clear LED key

After the setting, testing and fault checking of the controller, make the circuit breaker at normal operation.

⑥ Long time-delay overload time setting key

⑦ Earthing current setting key

⑧ Short time-delay time setting key

⑨ Fault checking key

After the breaker tripping, press it to indicate the kind of fault

⑩ Select key Test key

L Type Setting

● Long time-delay setting

Ir setting current from (0.4-1)In;

Tr setting time is 30s, 60s, 120s and 240s

Rotate Ir to off position to quit the function

● Short time-delay setting

Isd setting current from (3-10)In; Tsd setting time is 0.2s and 0.4s.

Rotate Isd to off position to quit the function

● Instantaneous setting

Ii setting current from (3-10)In or (10-20)In or (7-14)In;

Rotate Ii to off position to quit the function

● Earthing fault setting

Ig setting current from (0.2-0.8)In

Tg setting time is 0.2s, 0.4s, 0.6s and 0.8s

Rotate Ig to off position to quit the function

● Controller is in operation state.

Press clear LED key to finish all the parameters.

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