ST420F-L9 combined electrical fire monitoring detector

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ST490F-3
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ST420F-L9 series combined electrical fire monitoring detector device is designed for TT and TN systems below 690V. It monitors and manages the residual current and temperature electrical fire hazard parameters of the distribution circuit to prevent electrical fires. It is an ideal choice for electrical fire prevention and monitoring in chemical enterprises. The device is composed of protection main body (including display), residual current transformer, temperature sensor and other parts. The pr

1) Device Overview

ST420F-L9series of combined electrical fire monitoring detector devices are designed690Vthe followingTT,TNsystem design, through the distribution circuit of the residual current and temperature of electrical fire hazard parameters to implement monitoring and management, so as to prevent the occurrence of electrical fires, is the ideal choice for chemical enterprise electrical fire prevention monitoring. The device is composed of protection main body (including display), residual current transformer, temperature sensor and other parts. The protection main body of the device is installed on the cabinet panel, and the other parts are installed in the cabinet.

2) Device Model

Note:

1) Standard1RoadModbus-RTUCommunications and1relay output;

2) has9residual current measurement and1road temperature measurement function.

3) technical parameters

Analog Input Loop

Rated residual currentI△n

1A

frequencyF

50Hz

Measurement range and accuracy

Name

accuracy

residual currentI△

50 ~ 1000mA

≤± 1%

temperature

0°C~ 200°C

≤± 5%

protection action accuracy

residual current

300 ~ 1000mA

≤1mA

temperature

45-140°C

≤1°C

protection delay time

0.1~ 60.0s

≤0.1s

Auxiliary power supply

power supply voltage (both AC and DC)

AC 85~264V,DC 90~300V

power consumption(is normal./protection)

≤3W / 5W

relay output (standard 1 way)

R(open and close)

AC250V 5A,DC30V 5A

communication function

Modbus-RTUStatute

1channel, RS485 interface, terminal access

Alarm function

Alarm mode

Sound and light alarm

Alarm Record

8alarm records

audio device

70~115dB

work environment

working temperature

-10~ +40 ℃

storage temperature

-20~ +70 ℃

relative humidity

5~ 95% (no condensation or ice inside)

altitude

<2500m

IPlevel

IP20

4) Contour Installation

Device body

dimensions: 76.7mm × 112.3mm × 57.8mm (length and widthhigh).

Installation Method

device is the standard in the cabinet.35mmrail installation.

5) Terminal Arrangement

6) Terminal Definition

7) Typical Wiring

Product Details

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