System Overview

With the development of electrical automation technology and computer technology in the power system, higher requirements have been put forward for intelligent equipment in the power system. As an important intelligent device in the power system, the relay protection device will no longer have a single protection function, but should be a protection device that integrates measurement, metering, control, and communication.

The CNIK-800 series microcomputer protection and measurement device is a high-performance protection and measurement device developed to meet the needs of power system development and the market, integrating measurement, metering, control, and communication. This series of microcomputer protection and measurement devices adopts the current 64 bit embedded microprocessor, fully isolated high-speed and safe fieldbus technology, and humanized human-machine interface. Its performance and technical indicators are at the advanced level in China. Mainly applicable to power systems and other industry users with voltage levels of 110KV and below.

CNIK-840 Functional Features

◇ Panel material: Aluminum profile with metal paint surface treatment

Back chassis: 5U all aluminum profile

Circuit board structure: plug-in structure

◇ EMC testing: Level 4

◇ Panel size: 222mm * 149mm

◇ Input: 14 passive, output: 12 relay outputs

◇ Analog acquisition: dual channel measurement of current and protection current

◇ Operating power supply: DC220V ± 20% or DC 110V ± 2%

◇ Adaptive frequency range of 45~665HZ

◇ switchable between Chinese and English

◇ Input and output can be easily customized

◇ Equipped with independent anti jump and operation circuits

Protection function

Measurement and control function

◇ Electricity measurement: IA、IB、IC、 Three phase current, IA2, IB2, IC2 three-phase current

◇ 14 channel switch remote signal acquisition, remote signal displacement, and accident remote signal

◇ 12 relay outputs

RS485 communication (optional with 2 channels)

◇ 64 fault records kept during power failure

Typical wiring