AFR-3S Arc Flash Relay

Features

Dual criteria for arc detection and overcurrent detection;
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
Power supply	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