ABB Swiss spare parts DSRF180A three-phase thyristor trigger board control module
Brand ABB color Standard Application Industrial height 258mm rated current 568mA
Protection Level IP45 Suitable for motor power 288KW Applicable Site Power Industry BOM Number GJR2391500R1220 Power industry HIEE401782R0001 Part Number 216BM61b HESG448267R1021
Applicable pipe 2 Whether imported is weighing 2.88 kg can be sold nationwide
ABB Swiss spare parts DSRF180A three-phase thyristor trigger board control module
At present, the various control systems used in the 216BM61b HESG448267R1021 automation system may be in a harsh electromagnetic environment formed by strong electric circuits and equipment. In the construction site, electrical equipment, instrumentation, DCS control system, DCS system signal transmission, there is often interference, resulting in system instability and even misoperation, must be paid attention to.
– What are the main introduction of interference
Resistance coupled interference
In the process of work, 216BM61b HESG448267R1021 because many factories ignore the problem of wire aging. When a variety of signal lines are transmitted together, other transmission signals will be affected due to aging leakage of insulating materials on the wire, and other transmission signals will be interfered with. In addition, not only the aging of the signal line will have an impact on other signal lines, but some high-power circuits (such as heat generation circuits) will also cause great interference to the signal if the line aging occurs in use.
Capacitance-inductance coupling interference
Usually, the control cabinet of the controlled site is connected with a lot of signal lines, some of these signal lines use cable slots, some use cable tubes, especially many signals are wired at the same time, and there is a capacitor distribution between the signals, which will interfere with other signal lines. In particular, the alternating magnetic flux is formed around the AC signal line, and then the potential is formed between the parallel conductors, causing potential interference signals.
Lightning interference
When lightning strikes, large electromagnetic interference may be formed around the desired signal, of course, the introduction of interference routes will also be caused by various ground lines to a certain extent. There are two types of lightning interference: one is the overhead power cable, which causes the signal line to encounter lightning and cause interference; The other is that lightning strikes around the signal cable, resulting in capacitive and inductive coupling distribution on the signal line, resulting in greater interference, and serious damage to the equipment, resulting in personal accidents.
Supply line interference
Due to the frequent start-up and shutdown of large equipment in power plants, the 216BM61b HESG448267R1021 is also frequently switched on and off large components, which generate large and transient alternating magnetic fields when these large motor equipment is switched on and off. Alternating magnetic fields will be coupled on the signal line, which will interfere with the system, and these alternating magnetic fields will also produce high-frequency interference on the power line, and the signal degree will also affect the system if it exceeds the specified range. In order to ensure that the system is protected when the large motor is switched, a transformer can be added to the circuit to ensure that the alternating magnetic field will not be generated when the voltage changes too much when the motor is switched.
— The main cause of interference —
Material and equipment problems
216BM61b HESG448267R1021 Control signals connected to the DCS are usually transmitted through cables. When the insulation materials of the signal cables are aged and the shielding materials are damaged, they will be interfered by other electromagnetic interference sources, which will cause measurement errors and damage to the device.
Irregular construction
In the DCS control system, there are often many signals connected to DCS at the same time. These signal lines either take the cable trough or the cable tube, resulting in many different types of cables on the site attached to the same path. There are distributed capacitors between these signals, through which interference is added to other signal lines. At the same time, 216BM61b HESG448267R1021 generates alternating magnetic flux in the surrounding environment of the transmitted signal, such as power lines, motors, generators, power transformers, and relays. These magnetic fields tend to cause large disturbances.
ABB Swiss spare parts DSRF180A three-phase thyristor trigger board control module
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