EKR series digital integrated protection device is applicable to the 110KV voltage level neutral point grounding, Peterson coil grounding or microcomputer products by small resistance grounding in distribution network, substation. To provide for transmission lines and transformers, capacitors, motor and other main equipment protection, control, measuring and monitoring function. The device adopts the design unit that can be easily equipped with a switch device, also can focus group screen. Through the field bus interface standard, support multi node cooperative work, realize the sharing of system level management and comprehensive information.
This series of devices using a user level three module project programming mode, field programmable technology (ISP), being applicable to power system PLC function, based on alternative can achieve two times its programme can not be completed. Therefore, the future development direction of EKR series digital integrated protection device to comply with this technology, is the ideal equipment which constitutes the foundation, distribution automation system.
Tel: 021-69213339-801, 805.
The EKR200/300 series device using high performance digital signal processor (DSP) TMS320F2812 and ultra large scale integrated circuit chip (VLSI). CPU frequency rate is as high as 150MHz, with the kernel of advanced structure, high speed and real time signal processing quality characteristics and provide powerful computing capabilities. The hardware design is concise, equipped with industrial level module, stable and reliable operation of protection device. The EKR400/500 series device is completely the introduction of foreign advanced technology, at the same time into the native element, with similar foreign products of the same quality and ensure.
The special module level project level a user level three level programming model, can provide the protection module is up to 32 * 6, module type site can set parameters, module field distance can be set.
Switch input, relay output programmable, easy to realize interlocking /l atresia and other equipment and cooperation. Professional JTAG online programming method can in extreme cases, requirements for grid systems tailored to the special function of the user.
The high speed, high precision AC signal measurement, sampling frequency up to 1600Hz. The completion of a number of AC signal FFT calculation in milliseconds, fundamental and harmonics can be obtained by 2-13. A digital calibration measurement values, and can effectively suppress noise and offset.
The powerful calculation method of vectorization, outer 12 way analog channel can be obtained based on the characteristics of various derived; AC signal, including positive, negative, zero sequence, phase transformation point, line, impedance, differential current, power etc..
Fault - 32 points per cycle of the recorder for recording density current and voltage waveform of fault, fault recorder starting module, channel optional wave. The maximum record length of 200 frequency x phase.
The real time waveform display, through the 320 x240 graphic LCD display, can display 23 frequency arbitrary waveform two AC signal. Double channel waveform adjustable display provides powerful support for field monitoring.
The continuous recording 20 events (and cooperation, the background monitoring system can record more than a year of the event), the protection action with fault time, fault type, fault peak recorded, and power off keeping, convenient for fault analysis and query,
Adopts the large screen liquid crystal display (320x240), and Chinese characters that display icons, all display content in "primitive" way of drawing, according to the requirements of users can add and modify. Simple operation and setting, setting function has two levels of password protection to facilitate on-site management.
The surface mount technology, multilayer wiring. The king will signal circuit with electromagnetic interference absorption module, device has good electromagnetic compatibility characteristics, suitable for harsh electromagnetic environment.
The various communication interfaces including RS485/CAN, communication protocol enhancement, in addition to the normal data transmission, but also can transmit the real-time waveform, physical data block etc..
The perfect self checking function, including parameter setting, memory module, operation circuit, measuring circuit and other abnormal monitoring, the operation management personnel work of the device can accurately grasp.
The simple structure design.
The simple GB/T3047 plug-in chassis conform to GB requirements of the installation: connection adopts the plug pull plug connection mode, easy installation and maintenance.
The hardware system of the hardware system of the modularized design uses the modular, systematic and standard, avoid AT open circuit, short circuit to VT. Convenient batch production and maintenance, is conducive to reducing the spare parts.
