3 Channel Arc Guard Flash Fault Detection Protection Relay for Mv Hv Switchgear Power Distribution Systems

Product Description

AFR-3s arcflash protection are mainly used to detect arc faults in electrical systems and protect equipment and personnel in

electrical systems from arc faults(flash arc). The arc fault detection can detect arcs by monitoring parameters such as current, voltage, and electric power, and quickly disconnect the power supply before an electrical fire occurs, thereby reducing the risk of fire.

This AFR-3s Arc flash relay is usually used in medium and high-voltage power distribution systems, control cabinets, transformers, generators, motors, and other electrical equipment. The electric arc flash relay adopt the dual-criteria principle of arc light detection and overcurrent detection and have the characteristics of fast protection action and high reliability.

 

Features

 

 

* Complete exception records, event records, and operation records;
* All information power-off retention;
* Equipped with RS485 communication interface;
* Integrated MODBUS standard communication protocol;
* Small and exquisite appearance, reasonable structure;
* Using high-grade, high-quality components;
* Using multi-layer board technology and SMT process;
* The product has high electrical performance;
* Can collect 3 channels of arc light signals;
* Support ST visible light and ST ultraviolet sensor access.

 

 

 

 

Specification

 

Working power supply
Power supply	AC/DC 85~265V
	DC24/48V customized
Power consumption	Normal operation ≤8W; device action ≤10W
Current input
Rated current value	5A/1A
Measuring range	Protection current: 0.06~10In
Power consumption	≤0.5VA
Electrical parameter error
Protection current accuracy	≤±4%
Zero sequence current accuracy	≤±4%
Arc signal input
Number of channels	1-3 channels
Sensor type	ST optical fiber type
Detection light type	Visible/UV optional
Temperature measurement signal input (optional)
Number of channels	3-12 Channels
Sensor type	Passive/Active/Micro
Signal acquisition type	433M
Partial discharge signal input (optional)
Channels number	1 channel
Sensor type	Wire transmission
Detection light type	Geoelectric wave/Ultrasonic wave/Noise/UHF (optional)
Smoke sensor input (optional)
Channels number	1 way
Sensor type	External wired smoke sensor
Fire extinguishing sensor (optional)
Injection time	≤12S
Start mode	Electric start & thermal start
Protect space	≤3m³
Component type	Aerosol fire extinguishing unit
Action time error
Pure arc trip	≤10ms
Current+arc trip	≤20ms
Alarm action time	≤40ms
Fire extinguishing spray lag time	≤3s
Relay output
Channels number	4 channels (optional 6 channels)
Operating Voltage	AC250V/8A
Input	Passive contact, photoelectric isolation, isolation voltage 2500V
Communication Interface
Communication Interface	1 channel, photoelectric isolation, with lightning protection
Baud rate	4800, 9600bps (default 9600)
Communication protocol	Modbus RTU
Ethernet communication
Communication Interface	1 channel
Network parameters	10M/100M adaptive
Communication protocol	IEC60870-5-103 (NZ103)
Environment
Working temperature	-25 ~ 70°C
Storage temperature	-40 ~ +85°C
Humidity	5~95%RH
Atmospheric pressure	60kPa~106kPa
Electromagnetic compatibility
Electrostatic discharge test	GB/T 14598.14-2010 ,level-4
Fast transient dry resistance test	GB/T 14598.10-2007, level-A
1mhz burst interference test	GB/T 14598.13-2008, level-3
Electrical disturbance test	GB/T 14598.9-2010, level-3
Surge immunity test	GB/T 14598.18-2007
Conducted disturbance test	GB/T 14598.17-2005,22-6

Note: If you have any puzzles or requests about this product (including model number, data sheet or any other aspects), please contact us immediately.

Application

* Reduce the harm of arc light to human body;
* Reduce damage to equipment caused by arc short-circuit faults;
* Avoid transformer damage caused by bus failure;
* Protect the dc system in the station;
* Ensure the stable operation of power substations;
* Thermal power plant electrical section switchgear;
* Wind farm and photovoltaic station switchgear;
* Large municipal engineering project.

 

 

 

 

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