High-Quality Mingri Current-limiting Protector System Main Unit Manufacturers, Factory

The current-limiting protector system main unit includes the CPU main control unit, alarm unit, communication unit, and display unit. By connecting to on-site current-limiting protectors, it can accurately receive power data transmitted from the current-limiting protectors. Through calculation and analysis, it determines whether values exceed standards. If values exceed thresholds, it triggers an audible and visual alarm. The current-limiting protector system main unit features a 6-inch LCD screen for displaying real-time on-site measurement data, performing historical data queries, system time settings, alarm parameter configurations, and other operations. The operation interface is simple and user-friendly. It adopts a wall-mounted installation method.

Product Description

System Functions

  • Digital processing technology for real-time monitoring and display of each distribution circuit's working status
  • RS485 communication technology for real-time and accurate transmission of operating parameters and control commands
  • Multi-level distributed intelligent control system for zone protection of distribution circuits
  • Dangerous electricity warning and alarm, high-risk current cutoff
  • Intelligent data analysis and intelligent parameter setting
  • Backup power system capable of supporting system operation for more than 12 hours
  • System self-check and network inspection functions
  • Audible and visual alarm, remote switching functions
  • Alarm and fault record storage, query, and printing functions

Product Display

Technical Parameters

Technical Specification Details
Operating Power Supply AC220V
Display 6-inch LCD Screen
Monitoring Points Standard 128 points; customizable 256, 384, 512 points
Alarm Method Audible and visual alarm, alarm sound ≥70dB
Storage Records ≥10,000 records
Printer Micro thermal printer
Backup Power UPS power supply
Communication Method RS485
Communication Cable ZR-RVVP-2×1.0mm² shielded twisted pair
Communication Distance ≤500m
Ambient Temperature -20℃~60℃
Altitude ≤4500 meters
Product Dimensions 550×400×130mm
Installation Method Wall-mounted installation

Main Components

1Central Processing Unit (CPU)

Functions as the "brain" of the system host, responsible for processing and analyzing all data received from field protectors, and making judgments and responses based on preset logic.

2Communication Unit

Responsible for data exchange with on-site current-limiting protectors. Common communication methods include RS485 bus, following protocols such as Modbus-RTU.

3Display Unit

Used to intuitively display system operation status, real-time data, alarm information, and historical records, facilitating viewing and operation by management personnel.

4Alarm Unit

When abnormalities are detected, it issues alerts through audible and visual means to draw management personnel's attention.

Frequently Asked Questions

How many monitoring points does this system support?

The standard configuration supports 128 monitoring points, and it can be customized to support 256, 384, or 512 points depending on your electrical network requirements.

What happens if the main AC power fails?

The system is equipped with an integrated UPS backup power system capable of maintaining continuous operation for more than 12 hours.

How is the system installed?

The system is designed for wall-mounted installation, featuring compact dimensions of 550×400×130mm for convenient integration into control rooms or distribution panels.

What communication protocols and cables are required?

It communicates via the RS485 bus using ZR-RVVP-2×1.0mm² shielded twisted pair cables, supporting effective transmission distances up to 500 meters.

How are alarms and system events logged?

The device features high-capacity internal storage capable of holding at least 10,000 fault and alarm records, which can be retrieved, displayed on the 6-inch LCD screen, or printed via the built-in micro thermal printer.

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