Description
The REF 541 feeder terminal can be used with different kinds of switchgear, including single busbar, double busbar and duplex systems. The protection functions also support different types of networks, such as, isolated neutral networks, resonant-earthed networks and partially earthed networks. The application area also covers medium-sized three phase asynchronous motors as well as protection and control of shunt capacitor banks used for reactive power compensation. In addition to protection, measurement, control, condition monitoring and general functions, the REF 541 feeder terminals are provided with a large amount of PLC functions, which allow for several automation and sequence logic functions, needed for substation automation, to be integrated into one unit. The data communication properties include the following communication standards: SPA bus, LON bus, IEC 60870-5-103, IEC 61850 via SPA-ZC 400, Profibus DPV1 via SPA-ZC 302, DNP 3.0 and Modbus communication with higher level equipment. Further, the LON communication together with the PLC functions minimizes the need for hardwiring between the feeder terminals. Scope • Feeder protection relay Product benefits • Protection functions for many different types of power networks • Programmable logic functions (PLC) • Wide support for different communication protocols • Optical communication for fast disturbance-free communication Product features • Voltage and current measurement via conventional measuring transformers or current sensors and voltage dividers • Fault locator for short circuits in all kinds of network • Support for IEC 61850 protocol through the SPA-ZC 400 adapter • 15 binary inputs and 12 output relays
peculiarity Protect, control feeder terminals, medium measurement and supervise voltage networks. * Voltage and current measurement Ventilation measurement transformer or curve rent sensor and divider. * Fixed HMI, including large graphic display or external display soft switch mounting module. • Protection functions, including for example: non-directional and directional overcurrent earth fault protection, residual voltage, overvoltage and overvoltage protection thermal overload protection automatic recovery. • Control functions, including local and remote control sync check, status indication at bay switch object and cross lock and station level * Phase current measurements of phase and phase transitions are full of neutral voltage, neutral - current and residual voltage, frequency, power factor, active power and reactive power. * Advanced power quality measurement capabilities. Full harmonic distortion (THD) of ocean currents and the measured voltage of ocean currents. Short-term measured voltage changes such as sinking, expansion and brief interruptions.
* Condition monitoring, including circuit-breaker condition monitoring, trip circuit monitoring and internal self-monitoring transmitter stations. Time synchronization through binary input. Synthesize a timing pulse once per second or once a minute. * Various types of short-circuit fault locator networks and earth fault effective zone ears and low resistance/low reactance wireless networks. * Additional features, including synchro-check, frequency protection, capacitor bank protection and control. * Temperature RTD/ analog module measurement, current/voltage measurement - model and model output. Three communication interfaces: one for local communication with a computer and two simultaneous port communications, such as a substation communication system and a substation monitoring system.
ABB power module features and applications ABB power module uses advanced integrated circuit technology to integrate power devices and logic control circuits in a highly integrated, fully sealed integrated block with power function. The power module has the advantages of convenient use and reliable performance, which represents the development direction of power supply technology. Because the switching power supply has the advantages of high efficiency and small size, it is suitable for integration. Because of its low efficiency, generally about 50%, it is difficult to achieve high-power (more than 100W) integration. The power module introduced by Jimi technology refers to the switching power module, focusing on the DC/DC converter. Today's switching power modules can reach hundreds of watts or even kilowatts. Power module products mainly include DC/DC converter module, power factor correction module, AC input module, etc. Their main characteristics are: ◆ ABB power module working frequency is high, generally 300KHz~1MHz. ◆ ABB power module size is small, ultra-thin, thickness is generally less than 20mm, light weight, generally less than 200g. ◆ ABB power module power density is large, generally 5~10W/ cubic centimeter. ◆ ABB power module is easy to use, less external components, can be expanded in parallel, and can also realize logic control and remote control. ◆ ABB power module is suitable for a wide range of power grid voltage changes. When the general AC voltage fluctuates between 150V and 280V, the output has a voltage regulator function. ◆ ABB power module temperature adaptation range is wide, can be from -55 degrees Celsius ~+100 degrees Celsius, the general high temperature substrate temperature is +85 degrees Celsius, low temperature 0 degrees, -20 degrees, -40 degrees, -55 degrees and other levels. ◆ ABB power module fully sealed package, with three anti-function, waterproof, dustproof, anti-impact. ◆ ABB power modules generally use zero voltage switch or zero current switch technology, good electromagnetic compatibility. ◆ ABB power module structure is highly standardized and easy to install.
The company focuses on DCS, PLC, robot, large servo four systems
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