1. Overview

DW45-20 / 6.3 universal circuit breaker (intelligent universal circuit breaker) (hereinafter referred to as circuit breaker), for 5050 AC rated working voltage of 380V / 660V, rated current of 630A-3200A distribution network, the main use To allocate power and jealous lines and equipment from overload, under voltage, short circuit, ground and other hazards. The circuit breaker has intelligent jealous function, selective jealousy precision, can improve the reliability of power supply, to avoid unnecessary power outages, and with an open communication interface, remote control, remote control, telemetry, remote to meet Centralized control center and automation system requirements. The following are the same as the "
DW45-20 / 6.3 universal circuit breaker products meet the G814048.2 standard.

2. the model and its meaning

3. the use of environmental conditions

Ambient temperature: ambient air temperature of -5 ° C to +40 ° C (special order to be consulted with the manufacturer); Altitude: 2000M altitude of installation location; Pollution level: Pollution level 3; Installation location: Vertical installation, the tilt does not exceed 5 °; Installation categories: the main circuit and undervoltage release coil, power transformer primary coil installation category Ⅳ, the remaining auxiliary current, control circuit installed as Ⅲ; isolation function: drawer circuit breaker Isolation function; environmental protection: in the design and manufacture of full consideration of environmental factors, most of the components using recyclable and natural degradation of materials.

4. the structure outlined

The circuit breaker is compact, has the characteristics of three-dimensional separation, the contact system is enclosed in the partition between the two insulation plates, each contact are separated to form a small form. The intelligent release, the operating mechanism, the manual and the electric operating mechanism are arranged in front of them to form separate units. If one of the units is broken, the unit can be removed and replaced. The structure of the circuit breaker is shown in Fig. 2, Figure 3. Contact system (see Figure 4) Each phase contact system is installed in the insulating chamber, above the arc chamber. The contact system is connected to the spindle at the insulation plate by a connecting rod, thereby completing the closing and closing operation. And each contact system in order to reduce the repulsion, the use of 10 contacts in parallel form, 10 contacts installed in a contact bracket, a piece of contact with a soft connection and bus connection, the circuit breaker in the closed, the spindle drive The connecting rod rotates the contact bracket "0" counterclockwise, and the contact rotates clockwise around the "01" point when it comes into contact with the stationary contact, thereby compressing the spring, resulting in sufficient contact pressure to ensure that the circuit breaker through.

Operating circuit breaker operating mode has two kinds of electric and electric, circuit breaker with spring energy storage closed, closed speed and electric or manual operation has nothing to do, the circuit breaker using a cam compression of a group of springs to achieve the purpose of storage, and has a free trip function, See Figure 5. The circuit breaker has three operating positions, namely, energy storage, closing, disconnection.

Storage shown in Figure 5-a: electric or manual operation of the external force with cam rotation, the cam is covered with energy storage lever. So that it rotates with the cam, during the rotation process, the storage spring is continuously compressed, the cam when turned to a certain angle, the upper fixed shaft just pressed on the lever 1, and the other end of the lever 1 pressure release tripping On the other hand, the electric or manual operation of the external force to drive the connecting rod 1 rotation, the top of the connecting rod against the lever 2, so that the lever 2 to re-position rotation, and finally the trip to the re-buckle position, When the end of energy storage for the circuit breaker to prepare for closure.

Close shown in Figure 5-b: press the "1" button or close the solenoid action, so that the release can trip the spindle counterclockwise rotation, pressure on the release of the trip shaft on the lever 1 trip, the cam by the energy Spring force clockwise rotation of the energy storage lever counterclockwise rotation, just the energy storage lever on the shaft pin to hit the rod 2, so that the connecting rod rotation, and drive the connecting rod 1 action, connecting rod 3 to promote the spindle 8 clockwise Rotate the circuit breaker to close.

See Figure 5-c: Press the "0" button or the test trip signal from the overcurrent, undervoltage, spike signal, intelligent trip unit to turn the trip trip half axle 10 clockwise, lever 2 Buckle, pressure in the connecting rod of the force disappeared by the connecting rod 1, 2, 3 combination of four-link mechanism into a five-link, connecting rod 1 in a free state, in the contact force and the role of the return spring, The device is quickly disconnected.

The base base is composed of the following parts, which becomes the function executing device of the releasing device.
A. Interlocking mechanism: Actuator for the release - the flux converter actuates the trip lever to hold the circuit breaker after breaking it.
B. Reset mechanism: The flux converter is reset immediately after the main contact is broken.
C. Flux converter: in the receiver circuit to receive the current after a magnetic field, so that the magnetic field lines to change the direction, resulting in the action of the spring under the action of the core drive trip lever.
D. Contact group: according to the state of the circuit breaker to determine the contact of the sub-position.
The housing housing contains a basic circuit board of the release unit, which is subjected to a variety of signals according to the various functional requirements required to perform the various signals, to complete the required circuit breaker function. Sensor accessories are installed in the plastic case within the main circuit bus, the center line transformer can be installed according to user requirements. The sensor provides the energy signal for the triper to work. Unlike conventional transformers, the sensor is a speed-saturated current transformer that is primarily used to provide the normal working energy of the trip unit and another hollow transformer that primarily provides line current variations.
The size of the secondary current of the hollow transformer is proportional to the size of the main circuit current. The two transformers are also installed in a circular plastic box.

Power supply accessories:
Power supply accessories in several ways: installed in the base of the power supply accessories on the voltage from the main circuit for the release of the main circuit or when the current is very small display, remember the working state of the use; installed in the drawer seat on the power accessories AC power supply, DC power supply, uninterrupted (battery) power supply to ensure that the computer, relay accessories power supply.

Relays:
As a release function of the expansion relay accessories are divided into two kinds: according to the computer issued instructions to provide users with overload, short circuit action instructions, responsible for monitoring the action instructions and instructions, the machine fault indication and other sixteen different combinations of relay contact output, The other is controlled by the computer for remote transmission of various parameters and the user provides a variety of different combinations of instructions relay relay output.

Other Relays:
Other releases include undervoltage release, shunt release, remote release of the circuit breaker disconnector and closed electromagnet; circuit breaker in the open position after the storage, such as to close the circuit breaker As long as the closed electromagnet power, which can make the circuit breaker closed, see Table 7.

5. the main technical parameters

The main technical parameters of the circuit breaker are shown in Table 1

The maximum power dissipation of the circuit breaker is 300W, and the rated current of the circuit breaker at different ambient temperatures is shown in the table below.

Intelligent overcurrent release protection features and functions
① the type of trip with intelligent controller, undervoltage transient (or delay) release, shunt release.
② intelligent controller performance:
A. Intelligent controller is divided into: H type (communication), M type (general intelligent), L type (economy);
B. With overload delay inverse time, short delay inverse time, definite time, instantaneous function, can be set by the user to set the required protection characteristics
C. Single-phase grounding protection function;
D. Display function: set the current display, the line voltage (voltage display should be made when ordering);
E. Alarm function: overload alarm;
F. Self-test function: overload self-test, computer self-diagnosis;
G. Test function: test controller of the operational characteristics of energy;
③ over-current release protection features:
A. Detector set Ir value and error in Table 2:

Note: The setting value can not be crossed when there is a third-stage protection requirement at the same time.
(1.05 ~ 2.0) Ir1 action time in Table 3, the time error of ± 15%, Note: tL-long delay, the time delay is too low, 1.5Ir1 set the time, TL-long delay of the action time.
C. Short delay overcurrent protection characteristics: the protection characteristics of the release at low times for the inverse time characteristics. Its characteristic I2T2Ts = (8Ir1) 2ts, ts for the short delay setting time, when the overload current> 8IrI1, automatically converted to definite time characteristics, the timing and characteristics shown in Table 4, the time limit error of ± 15%.
D. Over-current release protection features shown in Figure 8.
E. Ground fault protection characteristics for the definite time limit, the delay characteristics shown in Table 4, the protection characteristics shown in Figure 9.

Operating performance of the circuit breaker The operating performance of the circuit breaker The number of operating cycles is shown in Table 5:

Circuit breaker shunt release, undervoltage release, operating mechanism, release, electromagnet; electromagnet operating voltage and the required power in Table 6; auxiliary contact performance: auxiliary contact of the heating current For the 6A; auxiliary contact form: four normally open four normally closed; auxiliary contact of the abnormal connection and breaking capacity in Table 7;注：(10% to 80%) Us should ensure that the circuit breaker is disconnected; the operating motor should reliably complete the energy storage between (85% ~ 110%) Us; the closing magnet should be % ~ 110%) Us to ensure a reliable closed circuit breaker. ② Undervoltage release The circuit breaker should be disconnected in the range of (70% ~ 35%) Us. When the circuit breaker is less than 35%, it should be able to prevent the circuit breaker from closing, and the circuit breaker is closed when the circuit breaker is close to 85% Ue. The delay time of the undervoltage release is adjustable from 1s to 5s.注：When Pe ≥ 50W T0.95 upper limit = 6P ≤ 300ms.注：The number of times the energization operation of the auxiliary contact is the same as that of the circuit breaker.

Intelligent release of the function of the ammeter function:
The maximum phase current of the main circuit is displayed on the digital tube. When the "Select" key is pressed, the phase current of the indicator light is displayed.

Voltmeter function:
The maximum voltage of the main circuit is displayed on the digital tube. When the "Select" key is pressed, the line voltage of the indicator light is displayed.

Tuning function:
In the long delay, short delay, instantaneous, grounding the whole function "set" button and "+" "-" can be set according to user requirements of the required current and delay time, to achieve the required current or Delay time and then "storage" button will be able to lock the user requirements of the set current and delay time, when the current fault occurs, can immediately stop the implementation of the function, the actual over-current protection.

Test function:
Press the "set" button, so that the set value of the current to the long delay, short delay, instantaneous state, the indicator light, and then press the "+" "-" key, select the required current value, then press the test key There are two types of test keys: one for the "no trip" test key, one for the "trip" test key, the former test function can be connected to the grid when the circuit running, When the network actually occurs when the current, you can interrupt the test function, the actual over-current protection.

Self-diagnosis function:
The trip unit has a local fault diagnosis function;
When the computer fails to send the wrong "E" display alarm, and restart the computer, the user needs, you can also break the circuit breaker when the local ambient temperature reaches 80 ℃, can send an alarm, and at a small current (When required by the user) to break the circuit breaker.

Load monitoring function:
Set the two setting values, Ic1, Ic2 set range (0.2 ~ 1) In, Ic1 delay characteristics for the inverse time characteristics, the delay setting value for the long delay set value of 1/2, Ic2 delay characteristics of two The first is the inverse time characteristic, the time setting value is 1/4 of the long delay setting value, the second is the definite time characteristic, the delay time is 60s, the former function is used when the current is close When the current setting exceeds the IC1 value, so that the delay is not important to break the lower load, the current decreases, so that the main circuit and the important load circuit to maintain power supply, load monitoring characteristics see Figures 10 and 11.

Release of the release function:
The trip unit can display its running current and voltage (ie ammeter and voltmeter function) at run time. When the fault occurs, it displays the section specified by the protection characteristic and locks the fault display and fault current after breaking the circuit. Section of the current, time and section type, such as the delay operation, in the process of running the indicator light flashes, the circuit breaker after the indicator light from flashing to constant light. The test current delay time test indication and test action section are displayed during the test.

Thermal simulation function:
After the overloading or short-circuit delay trip has the function of simulating the properties of the bimetal, the overload energy ends at 30min and the short delay energy is released at the end of 15min. During this period, overload and short delay , The trip time will be shorter, the trip device power, energy automatically cleared.
Circuit breaker control circuit wiring diagram shown in Figure 12.
 

6. Wiring diagram

Circuit breaker control circuit wiring diagram shown in Figure 12. 

7. Shape and installation dimensions

DW45-2000 fixed circuit breaker installation and dimensions shown in Figure 13 and Table 9.
DW45-3200 fixed circuit breaker installation and dimensions shown in Figure 14 and Table 10.
DW45-2000 drawer circuit breaker installation and dimensions shown in Figure 15 and Table 11.
DW45-3200 drawer circuit breaker installation and dimensions shown in Figure 16 and Table 12. 
DW45-4000 drawer circuit breaker installation and dimensions shown in Figure 16.
DW45-6300 (4000 ~ 5000A) drawer circuit breaker installation and dimensions shown in Figure 17.
DW45-6300 (5900 ~ 6300A) drawer circuit breaker installation and dimensions shown in Figure 18. 
DW45-6300 / 4 (In = 6300A) drawer circuit breaker installation and dimensions shown in Figure 19.
Panel mounting dimensions are shown in Figures 20 and 13.

The interlocking mechanism of the circuit breaker is shown in Figure 21a, Figure 21b:
Interlocking mechanism Install the circuit breaker on the right side of the board, stacking circuit breaker with interlocking, flat circuit breaker with steel cable interlock, when one of the circuit breaker in the closed state, the other can not close , The interlocking mechanism is installed by the user. Figure 21a is a three-piece circuit breaker with interlocking link. Such as two circuit breakers only need to remove the top of the circuit breaker. Figure 21b is a two-stage circuit breaker (fixed or drawer) with steel cable interlock. 

8. Installation and maintenance

Before installation, check whether the specifications of the circuit breaker meet the requirements;
Check the circuit breaker with the pole and pole, pole and shell, pole and mounting surface insulation resistance in the surrounding medium temperature 20 ± 5 ℃ and relative humidity of 50% to 70% when not less than 100MΩ, or should be dried, Insulation resistance to meet the requirements before use.
When the circuit breaker is installed, its base should be in the horizontal position, and there are four M10 bolts fixed, and the circuit breaker should be installed balance, no additional mechanical stress.
Drawer-type circuit breakers should first pull out the circuit breaker, the drawer seat and then fasten the circuit breaker into the drawer seat.
Installation should be a reliable protection of the circuit breaker grounding, grounding at a clear grounding mark.

The cross-sectional area of the recommended connecting wire is compatible with the rated current of the release shown in Table 14 to protect the circuit breaker from operation.

After the circuit breaker is installed and connected according to the wiring diagram, the following operation test shall be carried out before the circuit is energized (the "test" position of the drawer type circuit breaker)
A. Check the undervoltage release, shunt release and close the electromagnet, the electric energy storage device rated voltage and the power supply voltage is consistent, and then turn on the secondary circuit (undervoltage release should be connected, Circuit breaker to operate).
B. Check if the intelligent release reset button is reset and the circuit breaker can only be closed when the reset button is in the reset position.
C. Move the handle on the panel up and down seven times to show "energy storage" and hear "click" sound, that is, the end of energy storage, press the "I" button or close the electromagnet power, the circuit breaker is reliable, The handle can be re-energized.
D. If the motor is used to operate the energy storage, the motor power is turned on, the motor is energized to the panel to display "energy storage", and with the "click" sound, the energy storage end motor automatically power off, press the "I" button or close Electromagnet power, the circuit breaker reliable closed, while the motor and power storage for the next closure to prepare.
E. After the circuit breaker is closed, the circuit breaker should be disconnected regardless of the undervoltage release, the shunt release, the "O" button on the panel or the intelligent trip test.

After the circuit breaker is installed and connected according to the wiring diagram, the following operation test shall be carried out before the circuit is energized (the "test" position of the drawer type circuit breaker)
A. Check the undervoltage release, shunt release and close the electromagnet, the electric energy storage device rated voltage and the power supply voltage is consistent, and then turn on the secondary circuit (undervoltage release should be connected, Circuit breaker to operate).
B. Check if the intelligent release reset button is reset and the circuit breaker can only be closed when the reset button is in the reset position.
C. Move the handle on the panel up and down seven times to show "energy storage" and hear "click" sound, that is, the end of energy storage, press the "I" button or close the electromagnet power, the circuit breaker is reliable, The handle can be re-energized.
D. If the motor is used to operate the energy storage, the motor power is turned on, the motor is energized to the panel to display "energy storage", and with the "click" sound, the energy storage end motor automatically power off, press the "I" button or close Electromagnet power, the circuit breaker reliable closed, while the motor and power storage for the next closure to prepare.
E. After the circuit breaker is closed, the circuit breaker should be disconnected regardless of the undervoltage release, the shunt release, the "O" button on the panel or the intelligent trip test....

Test of the release:
After the release parameters are set, the respective protection functions of the release can be checked before the circuit breaker is put into operation.
A. Shake the circuit breaker to the "test" position;
B. Use the "Set" key to view the settings of various functions in turn;
C. Use "Set" "+" "-" to recall a simulated current, be careful not to store the lock.
D. Press the "trip" or "no trip" button, press the "trip" button, the test indicator light, the corresponding status indicator flashes, after the action time, the circuit breaker disconnected, showing the action time, Indicator and trip indicator light, press the "no trip" key and "trip" key the same, but the circuit breaker is not open, the trip indicator light does not shine;

Release other use rules:
In the setting, check the state 1min, do not press the key, the automatic key to enter the normal operation state, and in the event of failure, then automatically block the key function, into the fault handling state, with thermal memory function of the intelligent release, After the current characteristics of the test, you must wait for the end of the release of energy to complete the next test, otherwise the action time will be shortened;
A. Set check:
Release the "clear", in the case of no fault, press the "Select" button to cycle to indicate the various states and the corresponding set current and time. Check finished, click the "clear light" button, 1min does not automatically enter the normal working state;
B. Grid operation current and voltage check:
Press the "Select" key to display the last fault status and fault current, test or fault trip, press the "Select" button to cycle to indicate the test or fault current Or the time value, the test state does not remember;
C. Reset:
In the case of auxiliary power supply, the circuit breaker must first press the controller "clear light" button, so that the release into the normal operation, and then a mechanical "reset" button to close the circuit breaker.

1. If the reset button or the circuit breaker is released, if it is closed again, press the reset button, otherwise the circuit breaker can not be closed;
2. Current time display, can show the tuning, test, fault current and tuning, action time;
3. Current, time unit display;
4. "Trip indicator";
5. "clear light" button, trip set, after the fault test or the circuit breaker must be closed before pressing the button, so that the release in normal operation;
6. "Set" button. Check or set various protection characteristics for current or time. Press this key to cycle through various states;
7. "Check" button. Check or set various protection characteristics for current or time. Press this key to cycle through various states;
8. "trip" "do not trip" button, test function with;
9. "Save" button. Storage set value;
13. Various protection features indicate light bulbs;
15. fault indicator;
16. Test status indicator;
"Select health", the normal running state cycle shows the current value, fault status or fault check status can cycle display fault current or time value;
"" "" Key, set current or time;
Test current rod hole;
protecting mask;

9. Oorder specification

Note: When ordering must specify the shell current, rated current and auxiliary control voltage;
Note: 1) Please tick "√" or "fill" with the corresponding "□" "_" in the desired option. If you do not include the label, the company will provide the factory.
2) If additional features and special requirements are selected, additional cost will be charged.
Configuration instructions a), DW45-20 / 6.3 universal circuit breaker conventional configuration instructions:
1. Electric: undervoltage instantaneous release, shunt release, closed electromagnet, 3 sets of switching contacts, motor, M-type intelligent controller, the main circuit horizontal wiring, door frame, the main circuit mounting bolts, M-type intelligent Controller manual, circuit breaker manual, box, drawer seat (drawer circuit breaker);
2 manual: undervoltage instantaneous release, three sets of switching contacts, M-type intelligent controller, the main circuit horizontal wiring, door frame, the main circuit installation bolts, M-type intelligent controller manual, circuit breaker manual, Drawer seat (drawer type circuit breaker);
(1s, 3s, 5s, 7s, can not be adjusted), can be adjusted (optional), optional configuration (cost separately): 1.DW45-20 / 6.3 universal circuit breaker Optional configuration instructions: (1s, 3s, 5s, adjustable), lever interlock (drawer), cable interlock, button lock, key lock, door interlock, external transformer ground protection, Vertical bus, rotary wire (drawer type In≤3200 drawer), 3 normally open 3 normally closed contact, 4 normally open 4 normally closed contact, 4 groups of switching contacts, 5 groups of switching contacts, H-type intelligent control Device, position signal, counter, shield (NA1-2000)