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Zhuhai Guoce Electric Energy Instrument Technology Co., Ltd

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    No. 4, Third Street, Cuizhu Industrial Zone, Qianshan, Zhuhai City, Guangdong Province

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GC-DB100 Low Voltage Motor Protection Device

NegotiableUpdate on 03/11
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Overview

Product model: GC-DB100

Product Details

Product Introduction

GC-DB100 is suitable for AC380V and AC660V low-voltage systems. It adopts a powerful 32-bit processor and advanced 24 bit A/D conversion technology. It integrates measurement, protection, network communication and other functions, and can provide comprehensive protection and control for three-phase asynchronous motors.

This product adopts a modular integrated structure design, with a small volume, compact structure, and easy installation, especially suitable for switchgear, drawer cabinets, and operation boxes.

It can replace traditional molded case circuit breakers, thermal relays, ammeters, current transformers, various signal lights, a large number of intermediate relays and time relays, transmitters, PLCs and other components. It is an ideal product for motor protection in industries such as petroleum, chemical, coal, power, metallurgy, municipal, etc.


Product Features
  • Advanced high-performance industrial grade microprocessors with strong data processing and information storage capabilities, high reliability, and fast operating speed;

  • High brightness LED display, user-friendly buttons, easy for users to manually set parameters;

  • Adopting advanced storage technology, the set parameters can still be saved after power failure;

  • Protection function: The device has multiple built-in protections, which can be easily selected to enable or disable protection, alarm or trip;

  • The product can expand the "leakage protection" function and detect the leakage status of the motor circuit;

  • Equipped with event recording function, it can query the latest event record through the panel, facilitating fault analysis of the cause of the event;

  • Equipped with remote communication function: using RS485 interface and Modbus RTU protocol, measurement and control information, switch status, protection parameters, etc. can be uploaded to the background monitoring host to form a motor control center, achieving centralized management from a distance.

  • Wide power input function: applicable range of working power supply, AC85V~264V、DC110V~340。

  • Commonly used for AC or DC on-site power input.


TECHNICAL INDEX
Protection function

Short circuit during startup, short circuit during operation, overload protection during startup, overload protection during operation, locked rotor protection, overload protection, underload protection, overvoltage protection, phase loss protection, undervoltage protection, current imbalance protection, startup timeout protection, etc.

Measurement function One phase voltage, three-phase current.
Relay 2-channel relay output (passive output)
Switching input 3-channel switch input function (active input)
Transmission output One channel 4-20mA analog output function (optional three-phase current la lb lc)
communication 1 RS485 communication interface, standard Modbus communication protocol, speed adjustable from 1200bps to 9600bps
Leakage current Equipped with a leakage current protection function (optional)
Start mode Protection startup
Status display Corresponding indication of motor status through LED indicator lights
INPUT VOLTAGE

Rated voltage: AC220V or AC380V

Overload capacity: 1.2 times continuous operation

CT module

Rated current of electric motor ≤ 400A

Suitable for rated current ≤ 400A

measurement accuracy Level 0.5
Protection accuracy

Current not exceeding ± 5%

Voltage not exceeding ± 2.5%

Delay action not exceeding 40ms

Event recording resolution: ≤ 10ms

input frequency

Input range: 45-65Hz

Rated frequency: 50/60 Hz

Relay contact capacity 5A/250VAC、5A/30VDC
Switching input Conventional AC220V external power supply photoelectric isolation
4-20mA output Programmable, DC24V internal power supply
Auxiliary power supply DC 110V-340V or AC 85-264V, power consumption < 3W
work environment

Working temperature: -25 ℃~+65 ℃

Relative humidity at work ≤ 90%

Non corrosive gas environment





Outline dimension diagram


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Wiring Terminal Diagram


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