紧凑型继电器
紧凑型继电器
概述
Single function protection relays (SFPRs) are used for time-graded current (over current or short circuit), voltage (over voltage, under voltage, voltage unbalance) and frequency protection applications. Single function or compact relays are used in low-voltage applications. They are DIN rail-mountable and are easy to install, operate and commission. The wide-range power supply for AC and DC make these relays universal. Compact relays can be single or three phase relays.
Single function protection relays use MCU with an internal ADC for measuring the electrical parameter. A seven segments LED or character LCD is provided to display measured parameters. LEDs are provided for quick indication of the load status and other system functionalities. One or two relay outputs are provided for disconnecting the load during fault conditions. The parameter settings are configured using keys, rotary switches or potentiometers provided on the front panel. An RS-485 interface with MODBUS protocol is provided for networking.
设计要求
- Optimize the cost, size and performance of the MCU with integrated AFE and LED drive for capturing and processing of analog input signals and implementing protection algorithm.
- Power supply designs can help improve efficiency for wide input AC and DC voltages.
- Relay drivers and seven-segment LED drivers can be used depending on the drive requirements.
Modern compact relay designs can help:
方框图
查找适用于您系统的产品和参考设计
技术文档
类型 | 标题 | 下载最新的英文版本 | 日期 | |||
---|---|---|---|---|---|---|
应用手册 | 用于控制和保护的 HVDC 架构和解决方案简介 (Rev. B) | PDF | HTML | 下载英文版本 (Rev.B) | PDF | HTML | 2022年 5月 11日 | |
应用手册 | 扩展电网应用中的模拟输入通道(使用 16 通道、16 位、1MSPS 双路同步采样 ADC) (Rev. A) | 下载英文版本 (Rev.A) | 2022年 5月 10日 | |||
白皮书 | 实施并集成有线和无线技术以实现电网互操作性 | 下载英文版本 | 2019年 3月 22日 | |||
应用手册 | HSR/PRP Solutions on Sitara Processors for Grid Substation Communication | 2018年 4月 17日 |