CSA463AE Analog input module ABB
Brand ABB color Standard Application Industrial height 315mm rated current 410mA
Protection Level IP45 Suitable for motor power 195KW Application Area Power Industry Material Code GJR2391500R1220 Power industry HIEE401782R0001 Part Number CSA463AE
Applicable pipe 2 Whether imported is weighing 4.88 kg can be sold nationwide
CSA463AE Analog input module ABB
What is relay protection
This paper studies the power system failure and the abnormal condition that endangers the safe operation, in order to discuss the anti-accident automation measures. Because in its development process has been mainly used with contact relay to protect the power system and its components (generators, transformers, transmission lines, etc.), so that it is not damaged, so called relay protection.
The basic task is: when the power system fails or abnormal working conditions, in the shortest possible time and smallest area, the fault equipment is automatically removed from the system, or the signal is sent by the duty personnel to eliminate the root cause of abnormal working conditions, in order to reduce or avoid the damage of the equipment and the impact on the power supply in the adjacent area.
The earliest relay protection devices were fuses. Later, electromagnetic relay protection devices for circuit breakers, electronic static relays and even digital relay protection for application computers appeared.
Classification of relay protection
1, according to the protected object classification, there are power line protection and main equipment protection (such as generator, transformer, bus, reactor, capacitor and other protection).
2, according to the protection function classification, there are short circuit fault protection and abnormal operation protection. The former can be divided into primary protection, backup protection and auxiliary protection. The latter can be divided into overload protection, loss of magnetic protection, out-of-step protection, low-frequency protection, non-full-phase operation protection and so on.
3, according to the protection device for comparison and calculation of the semaphore classification, there are analog protection and digital protection. All electromechanical, commutator, transistor and integrated circuit (operational amplifier) protection devices, which directly reflect the continuous analog of the input signal, are analog protection; The protection device of microprocessor and microcomputer, which reflects the discrete digital quantity after sampling and analog/digital conversion of analog quantity, is digital protection.
4, according to the principle of protection action classification, there are overcurrent protection, low voltage protection, overvoltage protection, power direction protection, distance protection, differential protection, longitudinal protection, gas protection, etc.
Performance of relay protection
The relay protection operating on tripping should generally meet four basic requirements in technology: selectivity, quickness, sensitivity and reliability. That is to protect the four natures.
1. Selectivity
Selectivity means that when the power system fails, the protection device only cuts out the faulty components, and the non-faulty components can still operate normally, so as to minimize the scope of power failure.
2. Quickness
Fast fault removal. ○1 Improve system stability; ○2 Reduce the user’s operation time under low voltage; ○3 Reduce the damage of the faulty components to avoid further expansion of the fault.
The general fast protection action time is 0.06 ~ 0.12s, and the fastest can reach 0.01 ~ 0.04s.
The operating time of the general circuit breaker is 0.06 ~ 0.15s, and the fastest can reach 0.02 ~ 0.06s.
3. Sensitivity
It refers to the ability to react to fault situations within the specified protection range. The protection device that meets the sensitivity requirement should react sensitively and correctly when the fault occurs in the area, regardless of the location of the short circuit point and the type of short circuit.
Typically, sensitivity is measured by the sensitivity factor and expressed as Klm.
The minimum and maximum calculated values of fault parameters are calculated according to the most unfavorable operating mode, fault type and short circuit point.
In the “Technical Specification for Relay Protection and Safety Automatic Device (DL400-91)”, the requirements of the sensitivity coefficient Klm of various types of protection are specified.
4. Reliability
Refers to the occurrence of a fault belonging to its change of action, it can operate reliably, that is, no rejection action (rejection); When the action is not changed, he can be reliably stationary, that is, there is no wrong action (referred to as mismovement).
There are internal and external factors that affect reliability:
Internal: the quality of the device itself, including the quality of the components, the rationality of the structural design, the level of manufacturing technology, the simplicity of the internal and external wiring, the number of contacts, etc.
External: level of operation and maintenance, correct debugging, correct installation
CSA463AE Analog input module ABB
ABB DTDX991A
ABB FPX86-9329–C
ABB GCC960C102
ABB GCC960C103
ABB GDC801B101
ABB HAC319AEV1
ABB ICSI16E1
ABB IMASI23
ABB IMBLK01
ABB IMDS014
ABB IMDSI14
ABB IMDSM04
ABB IMFECI2
ABB INIIT03
ABB INIIT13
ABB INIT03
ABB INNIS21
ABB INNPM12
ABB KUC720AE
ABB KUC720AE01
ABB MSR04X1
ABB MVR 0.44-10KA
ABB NPCT-01C
ABB PCD244A101
