American SEL microprocessor protection device SEL751A01G1G3G73810100

Brand: SEL/USA

Delivery Time: Over one month

Application Areas: Chemical, Petroleum, Energy, Electrical, General

SEL Microcomputer Protection Device Commissioning and Installation Method (USA)

SEL products are composed of highly integrated, bus-less microcontrollers, 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. It can also be used for voltage and current protection and control in some systems with voltage levels between 70V and 220V.

Advantages of SEL Microcomputer Protection Device (USA):

Product Features: Ultra-thin size, powerful functions, excellent workmanship, beautiful appearance, and high cost-effectiveness. Nanjing Dongzi microcomputer protection devices feature high integration, complete protection configuration, strong resistance, low power consumption, and resistance to harsh environments. They are particularly suitable for installation in KYN-28 medium-voltage switchgear, ring network switchgear, and various box-type substations, and can also be installed in centralized panels.

Features of the American SEL Microcomputer Protection Device:

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

(1) Complete Variety: The microcomputer protection device offers a particularly complete range of varieties, meeting the various protection requirements of various equipment in different types of substations. This greatly facilitates substation design and computer networking.

(2) Hardware: The use of new chips improves technical precision. The CPU uses an 80C196KB chip, and the measurement is a 14-bit A/D conversion. There are up to 24 analog input circuits. The acquired data is processed by a DSP signal processing chip, utilizing high-speed Fourier transform to obtain the fundamental to 8th harmonics. Special software automatic correction ensures high measurement accuracy. A multi-CPU system is formed by using dual-port RAM and CPU to convert data. Communication uses a CAN bus. It features high communication speed (up to 100MHz, generally operating at 80 or 60MHz) and strong resistance. On-site observation and setting of various protection modes and parameters can be easily performed 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, providing strong resistance. Besides centralized panel mounting, it can be directly installed on switchgear.

(4) The software boasts rich functions. In addition to various measurement and protection functions, it can 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 facilitates networking with various computer management systems.

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

(7) It features high integration, small size, and light weight, facilitating centralized panel mounting and decentralized installation on switchgear. In addition to the advantages of microprocessor-based protection mentioned above, the American SEL microprocessor protection device has the following characteristics compared with similar products:

(1) Complete range of products: The microprocessor protection device offers a particularly complete range of products, meeting the various protection requirements of various equipment in different types of substations. This greatly facilitates substation design and computer networking.

(2) The hardware utilizes new chips, improving technical precision. The CPU uses an 80C196KB chip, with 14-bit A/D conversion and up to 24 analog input circuits. The acquired data is processed by a DSP signal processing chip, using high-speed Fourier transform to obtain the fundamental to 8th harmonics. Special software automatic correction ensures high measurement accuracy. A multi-CPU system is formed by using dual-port RAM and CPU to convert data, with communication via a CAN bus. It features high communication speed (up to 100MHz, generally operating at 80 or 60MHz) and strong resistance. On-site observation and setting of various protection modes and parameters can be easily performed via 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, providing strong resistance. Besides centralized panel mounting, it can be directly installed on switchgear.

(4) The software boasts rich functions. In addition to various measurement and protection functions, it can 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 facilitates networking with various computer management systems.

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

(7) It features high integration, small size, and light weight, facilitating centralized panel mounting and decentralized installation on switchgear. SEL-751A; (751A01G1G3G73810100

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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

Our company primarily deals with European and American brands, and can source brands from any European country. For example, our key German brands include: FESTO, BURKERT, BOSCH-REXROTH, IFM, TURCK, P+F, BALLUFF, SICK, HIRSCHMAN, MURR, HYDAC, GSR, CROUZET, E+H, PILZ, HAWE, SIEMENS, STAUFF, EUCHNER, EMG, UNIVER, ATOS, NORGREN, and approximately 500 other European brands of varying sizes. We have cooperative relationships with these companies.

We also have companies in the US, and cooperate with approximately 200 brands, including ASCO, Vickers, MAC, Parker, MOOG, Fairchild, Denison, Ross, UE, MTS, and GEFRAN.

We have agency rights for Japanese brands, such as CKD, TOYOOKI, NACHI, DAIKIN, SMC, KOGANEI, TACO, NOK, and TOKIMEC.

Our business scope includes:

Hydraulic components such as:

Solenoid directional valves, directional valves, check valves, stack valves, relief valves, counterbalancing valves, proportional valves, manual directional valves, flow valves, pressure reducing valves,

Throttle valves, pressure control valves, back pressure valves, filling valves, flow dividers, shuttle valves, pressure relays, cartridge valves, pneumatic valves, and piston pumps. Gear pumps, vane pumps, cycloidal hydraulic motors, oil coolers, hydraulic cylinders, etc.

Pneumatic components include:

Air source processor assemblies, filters, pressure regulating valves, oil feeders, solenoid valves, pneumatic valves, angle seat valves, manual valves, pull valves, foot valves,

Mechanical valves, check valves, vacuum generators, cylinders, magnetic switches, shock absorbers, pressure gauges, quick couplings, floating couplings,

Pressure gauge switches, water coolers, electric positioners, PU tubing, vacuum suction cups, oil filters, vibrators;

Electrical components include:

Relays, sensors, converters, proximity switches, encoders, programmable controllers;

The company maintains a large inventory, with standard parts readily available. To better serve customers in various industries, the company also distributes other spare parts, with professional sourcing channels and reasonable prices.

The company's products are widely used in industrial machinery, machine tools, plastic machinery, shoe machinery, brick machinery, metallurgy, mining, chemical industry, papermaking, coal mining, shipbuilding, power generation, construction machinery, environmental protection machinery, and many other fields.