ABB circuit breakers can quickly restore operating conditions (prevent failures), and provide the best solutions, while providing the best electrical installation protection. From miniature circuit breakers to high breaking capacity molded case/air circuit breakers, ABB has solved all technical problems within its scope.
product detailed information
System Pro M compact, 1P, type B
Residual current circuit breaker series, with overcurrent protection and integrated in the System Pro M Compact® series, used to provide complete protection in a single device.
1 pole + N
B characteristics
Rated voltage 230 V AC
DIN installation
ABB RCBO and RCCB
RCBO: DIN rail installation, operating temperature range -25 to +55 °C. Optimal frequency range 50 to 60 Hz
Number of poles: 1P+N
Tripping characteristics: B
Leakage current: 30mA
Rated current: 10A
Breaking capacity: 6KA
Leakage protection type: A
Leakage release type: electromagnetic
Distributors of ABB DS201 residual current operated circuit breakers are not allowed to use sandpaper when cleaning the contacts, and plastic files should be used. d. Check whether the contact action is flexible, the contact stroke should meet the specified value, and check whether the contact is loose or falling off. If any problem is found, it should be repaired or replaced in time. b. Check the tightness of the iron core. If the iron core is loose, the operating noise will increase. b. Whether the coil insulation is discolored or aging, the surface temperature of the coil should not exceed 65. c. Check the wire connection of the coil. If there is open welding, the burned damage should be repaired in time.
ABB miniature circuit breakers (MCBs)
The miniature circuit breaker has overload and short-circuit protection to ensure reliable and safe operation.
The new series of proM compact S200 can meet the most common requirements and can be used in households, industry and commerce. All miniature circuit breakers comply with IEC/EN 60898 and IEC/EN 60947-2 standards.
Household / civil installation: typical breaking capacity 3 / 4,5 / 6 kA o Household Compact SH 200 T, SH 200 L, SH 200 Household or small store installation: breaking capacity up to 10 kA o Special models: S440, S950 / 970
o proM compact S200, S200 M
Industrial application installation: breaking capacity up to 25 kA and with special accessories o proM compact S200, S200M, S200P, S200U, S200U P utilities install special, selective and backup function miniature circuit breakers, breaking capacity up to 25 kA, It can achieve complete selectivity for downstream circuit breakers. o S 700 series
Industrial and commercial applications, with high breaking capacity and special features/accessories o S200P, 290, S500, S610, S220, S800
ABB Air Circuit Breaker
Air circuit breakers are used for overall protection of factories, complex systems and electronic circuits. They can also be used to protect generators, motors, transformers and capacitors.
Emax air circuit breakers are suitable for use in all factories and installed in ships, coal mines and substations for primary and secondary power distribution. Product features All ABB Emax air circuit breakers (fixed and withdrawable) have the same height and depth, and can be installed in the switch cabinet. Their performance ensures the safety of the operator. For example: when the cabinet door is closed, the circuit breaker can be shaken out, the protection level reaches IP54, and it also has a safety lock and double insulation. The phase and the neutral line are completely insulated, and the arc extinguishing chamber and the main contact can be inspected completely. SD Pocket has a special function, it can realize the connection communication between Emax circuit breaker and personal computer and palmtop computer through Bluetooth. In this way, no cables are needed, protection parameters can be set, the measurement data stored in the data logger can be displayed, the state of the circuit breaker can be corrected, and of course the number of circuit breaker operations can also be seen. Compliance with standards Emax circuit breakers and their spare parts are in compliance with international IEC60947, EN 60947, CEI EN 60947 and IEC 1000 standards, as well as relevant EC directives:
– "Low Voltage Directive" (LVD) no. 73/23 EEC
– "Electromagnetic Compatibility Directive" (EMC) no. 89/336 EEC.
In addition, a series of Emax circuit breakers are more compliant with UL 1066 standards.
ABB molded case circuit breaker
Two series of molded case circuit breakers designed by ABB: the well-known Isomax S series and the newly developed Tmax series (in 2003 international design, famous for its technical content and environmental protection). In addition, Tmax has a very high level of performance: small dimensions and simple installation. Coupled with double insulation, to ensure operator safety. Because of the excellent performance of its Tmax circuit breaker and the integrity of its release and accessories, it can be used in the main distribution and sub-distribution of AC and DC power plants.
Tmax features The Tmax series has high technology and adopts the most advanced design and simulation tools to ensure the best performance in the smallest form factor. Because the arc extinguishing chamber adopts the latest technology and can accelerate the opening speed, the Tmax series circuit breakers can greatly limit the let-through energy and reduce the current peak value, thereby avoiding the device from overheating and reducing the electric stress. In addition, Tmax series circuit breakers use a set of completely universal and standard accessories, which have many advantages: reduced inventory, convenience, flexibility and ease of use. They are all optional (using current up to 500A) new residual current release. (RC221, RC222, RC223) Application areas
Molded case circuit breakers are used in industrial and urban low-voltage factories, and the working current ranges from 1-1000A. They are installed in DC and AC power distribution cabinets for motor protection (motor control center), generator protection, capacitor protection and end users.
Failure and handling:
Judgment and treatment of "rejection" failure
The occurrence of "refusal to close" is basically in the process of closing operation and reclosing. This kind of failure is more harmful. For example, when the emergency power supply is required to be turned on in an accident, if the backup power circuit breaker refuses to close, the accident will be enlarged. Judging the reason for the "refusal to close" of the circuit breaker and the treatment method can generally be divided into three steps.
1) Check whether the previous refusal to close is caused by improper operation (such as letting go of the control switch too fast, etc.), and close it again with the control switch.
2) If the closing is still unsuccessful, check the conditions of all parts of the electrical circuit to determine whether the electrical circuit is faulty. The inspection items are: whether the closing control power supply is normal; whether the closing control circuit fuse and closing circuit fuse are good; whether the contacts of the closing contactor are normal; pull the control switch to the "closing time" position to see if the closing Whether the core movement is normal.
3) If the electrical circuit is normal and the circuit breaker still cannot be closed, it means a mechanical failure. The circuit breaker should be disabled and the dispatcher should be reported to arrange for maintenance.
After the above preliminary inspection, it can be determined whether the fault is electrical or mechanical. Common electrical circuit faults and mechanical faults are described as follows.
1. Common faults in electrical
If the red and green lights are off before the closing operation, it means that there is no control power supply or the control circuit is disconnected. It can check whether the control power supply and the components on the entire control loop are normal, such as whether the operating voltage is normal, whether the fuse is blown, whether the anti-trip relay is normal, whether the auxiliary contact of the circuit breaker is in good contact, etc.
When the green light flashes after the operation is closed, but the red light is off, the instrument has no indication, the horn sounds, and the mechanical opening and closing position indicator of the circuit breaker is still in the opening position, it means that the position of the operating handle does not correspond to the position of the circuit breaker. The circuit breaker is not closed. The common reasons are: the fuse of the closing circuit is blown or poor contact; the closing contactor does not operate; the closing coil fails.
When the circuit breaker is switched on, the green light goes out, the red light is bright and then goes out again, the green light flashes again and the horn sounds, indicating that the circuit breaker automatically trips after being closed. The reason may be that the circuit breaker is closed on the fault line causing the protection action to trip or the mechanical failure of the circuit breaker cannot keep the circuit breaker in the closed state.
If the green light flashes or goes out after the operation is closed, the red light is off, but the meter has instructions, and the mechanical opening and closing position indicators are in the closing position, indicating that the circuit breaker has been closed. The possible cause is the poor contact of the auxiliary contacts of the circuit breaker, for example, the normally closed contact is not disconnected, and the normally open contact is not closed, causing the green light to flash and the red light not to light; it may also be that the closing circuit is broken or the closing red light is burned out .
2. Common failures in machinery
1) The connecting rod of the transmission mechanism is loose and falls off.
2) The closing iron core is jammed.
3) The mechanism does not return to the pre-closing position after the circuit breaker is opened.
4) Tripping mechanism tripped.
5) The operating voltage of the closing electromagnet is too high, so that the hook cannot be caught.
6) The opening link has not returned.
7) The mechanism is stuck and the shaft pin of the connecting part falls off, making the mechanism empty and closed.
8) Sometimes when the circuit breaker is closed, the opening and closing actions are continuously performed many times, and the auxiliary normally closed contact of the switch is opened too early.
If the circuit breaker trips automatically but the relay protection does not act, and there is no short circuit or other abnormal phenomenon in the system when the trip occurs, it means that the circuit breaker is "mistakenly opened. The judgment and treatment of "misclassification" are generally divided into the following three steps.
1. According to the characteristics of the accident phenomenon, that is, before the circuit breaker trips, the meter and signal indicate normal. After the trip, the green light flashes continuously and the red light goes out. The current meter and active and reactive power meters of the circuit breaker circuit indicate zero. The judgment is "misclassification".
2. Check whether it is caused by accidental touch, misoperation, or vibration caused by external mechanical forces. At this time, the cause of the switch failure should be eliminated and the power should be sent immediately.
3. If the power cannot be delivered immediately due to electrical or mechanical failures, the dispatcher should be contacted to stop the "mis-opening" circuit breaker for maintenance. Common electrical and mechanical faults are:
Electrical faults include: protection malfunction or improper setting value, or current and voltage transformer circuit fault; poor insulation of the secondary circuit, two points of the DC system are grounded, so that the DC positive and negative power supplies are connected, which is equivalent to relay protection Action to generate a signal and cause a trip.
Mechanical faults include: the tripping and tripping mechanism cannot be maintained; improper adjustment of the positioning screw makes the three points of the turning arm too high; the spring of the trailer is deformed and the elasticity is insufficient; the roller is damaged; the trailer has a large slope or is not correct or the roller is in contact on the trailer Less noodles.
Judgment and treatment of "mismatch" failure
If the circuit breaker closes automatically without operation, it is a "misclose" fault. Generally, it should be judged and handled as follows. After inspection, it is confirmed that it has not been closed. If the handle is in the "after split" position and the red light flashes continuously, it indicates that the circuit breaker has been closed, but it is a "mis-closing". At this time, the wrongly closed circuit breaker should be opened.
For the "mis-closing" circuit breaker, if the circuit breaker "mistakenly closes" after opening, remove the closing fuse, check the electrical and mechanical reasons respectively, contact the dispatcher to stop the circuit breaker and transfer it to maintenance. The reasons for the "mismatch" may include:
1. The positive and negative points in the DC loop are grounded to make the closing control loop connected.
2. A fault in the automatic reclosing relay connects the control circuit (such as the internal time relay normally open contact mistakenly closed) to close the circuit breaker.
3. The coil resistance of the closing contactor is too small and the starting voltage is too low. When a pulse occurs in the DC system, it will cause the circuit breaker to close by mistake.
