American SEL microcomputer protection device 0351A0H2X4E55X1

Brand

SEL/USA

Delivery Cycle

More than one month

Application Areas

Environmental Protection, Petroleum, Energy, Electrical, Comprehensive

Composition of SEL Microcomputer Protection Devices

Microcomputer protection devices are mainly used in power plants, substations, and distribution stations with voltage levels of 110KV and below. They can also be used for voltage and current protection and monitoring in some systems with voltage levels between 70V and 220V.

Features of SEL Microcomputer Protection Devices

In addition to the advantages of microcomputer protection mentioned above, microcomputer protection devices have the following characteristics compared with similar products:

(1) Complete Variety: Microcomputer protection devices are available in a particularly complete variety, which can meet the various protection requirements of various equipment in various types of substations, thus greatly facilitating substation design and computer networking. (2) The hardware utilizes the latest chips, enhancing technological sophistication. The CPU is an 80C196KB chip, employing 14-bit A/D conversion for measurement. It features up to 24 analog input loops. The acquired data is processed by a DSP signal processing chip, utilizing high-speed Fourier transform to obtain the fundamental to 8th harmonic frequencies. Special software automatic correction ensures high measurement accuracy. A multi-CPU system is constructed by using dual-port RAM and CPU for data conversion, with communication via a CAN bus. It features high communication speed (up to 100MHz, typically operating at 80 or 60MHz) and strong anti-interference capabilities. On-site observation and setting of various protection modes and parameters are conveniently achieved through the keyboard and LCD display unit.

(3) The hardware design employs special isolation and anti-interference measures in the power supply, analog inputs, digital inputs and outputs, and communication interfaces, resulting in strong anti-interference capabilities. Besides centralized panel mounting, it can be directly installed on switch cabinets. (4) The software boasts rich functionality. Besides performing various measurement and protection functions, it can also perform fault recording (1-second high-speed fault recording and 9-second dynamic fault recording), harmonic analysis, and low-current grounding line selection functions in conjunction with a host computer.

(5) It can use RS232 and CAN communication methods, supports multiple remote control transmission protocols, and is convenient for networking with various computer management systems.

(6) It adopts a wide-temperature-range background 240×128 large-screen LCD display, which is easy to operate and aesthetically pleasing.

(7) It features high integration, small size, and light weight, facilitating centralized panel installation and distributed installation on switchgear.

US SEL Microcomputer Protection Device Debugging and Installation Method

US SEL consists of a highly integrated, non-chip microcontroller, high-precision current and voltage transformers, high-insulation-strength output intermediate relays, and high-reliability switching power supply modules. The microcomputer protection device is mainly used in power plants, substations, and distribution stations with voltage levels of 110KV and below, and can also be used for voltage and current protection and control in some systems with voltage levels between 70V and 220V. Advantages of American SEL microcomputer protection devices:

Product features: ultra-thin size, powerful functions, excellent workmanship, beautiful appearance, and high cost performance. Nanjing Dongzi microcomputer protection devices have the characteristics of high integration, complete protection configuration, strong anti-interference ability, low power consumption, and resistance to harsh environments. They are particularly suitable for installation on KYN-28 medium-voltage switchgear, ring network switchgear, and various box-type substations, and can also be installed in centralized panels.

Features of American SEL microcomputer protection devices:

In addition to the advantages of microcomputer protection mentioned above, American SEL microcomputer protection devices have the following characteristics compared with similar products:

(1) Complete range: The microcomputer protection devices have a particularly complete range of products, which can meet the various protection requirements of various equipment in various types of substations, which greatly facilitates the design of substations and computer networking. (2) The hardware utilizes the latest chips, enhancing technological sophistication. The CPU is an 80C196KB chip, employing 14-bit A/D conversion. It features up to 24 analog input circuits. The acquired data is processed using a DSP signal processing chip, employing high-speed Fourier transform to obtain the fundamental to 8th harmonic frequencies. Special software automatic correction ensures high measurement accuracy. A multi-CPU system is constructed by using dual-port RAM and CPU for data conversion, with communication via a CAN bus. It features high communication speed (up to 100MHz, typically operating at 80 or 60MHz) and strong anti-interference capabilities. On-site observation and setting of various protection modes and parameters are conveniently achieved through the keyboard and LCD display unit.

(3) The hardware design employs special isolation and anti-interference measures in the power supply, analog inputs, digital inputs and outputs, and communication interfaces, resulting in strong anti-interference capabilities. Besides centralized panel mounting, it can be directly installed on switch cabinets. (4) The software boasts rich functionality. Besides performing various measurement and protection functions, it can, in conjunction with a host computer, perform fault recording (1-second high-speed fault recording and 9-second dynamic fault recording), harmonic analysis, and low-current grounding fault location.

(5) It can use RS232 and CAN communication methods, supports multiple remote control transmission protocols, and facilitates networking with various computer management systems.

(6) It adopts a wide-temperature-range background 240×128 large-screen LCD display, which is easy to operate and provides a beautiful display.

(7) It features high integration, small size, and light weight, facilitating centralized panel installation and distributed installation on switchgear. American SEL microcomputer protection products: SEL551, SEL351A, SEL587, SEL751A, SEL

SEL-351 SELX1 (replaces 0351S6X3A4E15X2)

SEL-751A SEL751A01D1D3D72810300

SEL-751A SEL751A01G3G0X0X81

SEL-787 SEL0787EX1D1D1D71810300

SEL-300G SEL0300G00H421XX32XX

SEL-487B SEL0487B1X6X12XB1XDH9DDDX

SEL-411L SEL0411L1X6X1C6EEX36D52525

SEL-421 SEL04215611XC0C5361X1XXX

SEL-2506 SEL250604515X

SEL-2523 SEL252301310A0G1XX

SEL -3533 SEL3533XXXXX1323XXXXXXXX

SEL-2407 SEL24070A133

SEL-2730 SEL2730M0ARAC1111AAAAX0

SEL-2241 SEL2241X01323X0XXXXXX

SEL-2242 SEL2242R1X0

SEL-2244 SEL22442525X0

SEL-487B-1 SEL0487B1X6X52XC1XG37RRXXX

SEL-411L SEL0411L1X6X5C6CCX3425XXXX

SEL-551 SEL0551006X152X

SEL-551 SEL0551006X152X

SEL-551 SEL055100CX632X

SEL-578Z SEL0587Z0X115H22XX

SEL-311C SEL0311C00324255X1 Update 0311C103H4E55X1 KEY:7085

SEL-250 SEL2505425XX

SEL-0551 SEL0551C0CX13

SEL-0551 SEL0551C0CX13

SEL-0551 SEL0551003X532X

SEL-0351A SEL0351A00324565XX

SEL-0351A SEL0351A00324565XX 0351A030X4E65X1

SEL-710 SEL071050E1DCD1D74831210

SEL-710 SEL071001G1G9X71810831

SEL-710 SEL071002B1B9X71860000

SEL-749M SEL0749M01G602X1G10

SEL-751A SEL751A01G1G72810100

SEL-751A SEL751A01G1G0X72850100

SEL-751A SEL751A01D1D3D72810300

SEL-751A SEL751A01DCD1D74830210

SEL-751A SEL751A01G1G73860600

SEL-751A SEL751A62BCB3B74840820

SEL-751A SEL751A01G1G3G73810100

SEL-751A SEL751A01G1G1G72811310

SEL-751A 751A11GCGOX71860100

SEL-751A 751001ACA3A70850611

SEL-751A 751A01G1G0X0X810200 SEL-751A 751A01G3G1G71811630

SEL-751A 751A11A1A3A75850830

SEL-751A 751A01G1G3G72860100

SEL-787 07870X1G1G3G0X850310

SEL-787 07870X1G1G0X0X810100

Our company mainly deals in European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ, FESTO, and IFM. Door sensors: E+H (Germany), HEIDENHAIN (Germany), P+F (Germany), SICK (Germany), TURCK (Germany), HIRSCHMANN (Germany) industrial switches; Hengstler (Germany), MURR (Germany), SCHMERSAL (Germany), SAMSON (Germany), EPRO (Germany, Emerson's subsidiary); MOOG (USA), ASCO (USA) solenoid valves, MAC (USA) solenoid valves, NUMATICS (USA), PARKER (USA), VICKERS (USA), ROSS (USA); Norgren (UK); OMAL (Italy), ATOS (Italy), CAMOZZI (Italy), UNIVER (Italy), Camozzi (Italy)