LFP-7800 SF6 Leakage Monitoring and Alarm System

Product Introduction of SF6 Leakage Monitoring and Alarm System

The extensive use of SF6 gas in medium and high voltage equipment is aimed at addressing issues such as SF6 gas being heavier than air, prone to leakage and accumulation, causing oxygen deficiency in low-level spaces, and posing a threat to personnel in toxic air environments. Industry regulations clearly stipulate that personnel must ventilate for 15 minutes before entering the SF6 distribution equipment room to monitor the concentration of SF6 and oxygen in the air. Oxygen meters and SF6 gas leakage alarm devices that can alarm should be installed in the low-level area of the SF6 distribution equipment. The LFP-7800 SF6 gas leakage monitoring and alarm system is an intelligent online monitoring system developed and designed in accordance with the requirements of the SF6 regulations. It mainly detects the SF6 gas content and oxygen content in the ambient air. When the SF6 gas content in the environment exceeds the standard or is deficient in oxygen, it can give an alarm in real time, and automatically turn on the ventilation fan for ventilation. It also has many rich functions such as temperature and humidity detection, working status voice prompt, remote alarm, and historical data query. Its trace SF6 gas detection technology can detect SF6 gas with a concentration of 1000ppm, which not only ensures personal safety but also ensures the normal operation of equipment.

Application fields of SF6 leakage monitoring and alarm system

This system can be widely used in SF6 switch rooms of various voltage levels, SF6 switch combination electrical rooms (GIS rooms), SF6 main transformer rooms, etc.

Performance characteristics of SF6 leakage monitoring and alarm system

1. SF6 gas concentration over limit alarm, sound and light prompts, automatic exhaust in case of leakage

2. Oxygen content detection in the air, oxygen deficiency alarm

3. SF6 and oxygen can be detected simultaneously

4. When an alarm is triggered, the fan will automatically start

5. The operation status of the monitoring system can be monitored through remote network, and the operation of the host or transmitter can be directly controlled

6. Automatic timed exhaust and automatic exhaust for leakage exceeding standards, manual exhaust function and exhaust time recording

7. Automatic monitoring of environmental temperature and humidity

8. Gas detection points can be expanded as needed

9. Can choose to connect to a computer for remote monitoring, and record events and historical data

10. Circular network of detection points for easy installation and wiring

11. 15 inch large screen LCD true color display, user-friendly operation interface, automatically turns off backlight 60 seconds after stopping operation

12. Automatic voice prompts

Technical parameters of SF6 leakage monitoring and alarm system

Environmental temperature: Operating temperature -20 ℃~65 ℃ Storage temperature -25 ℃~70 ℃

Relative humidity: not greater than 95RH

Atmospheric pressure: 86kPa~106kPa

Detection range: Oxygen 0-25.0

Detection accuracy: Oxygen 0.5; Temperature ± 1 ℃; Humidity ± 5RH

SF6 alarm point: 1000ppm, error<5

Oxygen alarm point: 18

Fan starting point: Oxygen 19.6; SF6 1000ppm

The starting time of the fan can be adjusted from 0 to 60 minutes (default is 15 minutes), and the fan can be manually controlled or forced to start

Temperature display range -25 ℃~99 ℃

Humidity display range: 0-99RH

Electromagnetic compatibility Static discharge GB/T17626.2-1998 Level 3

Radio frequency electromagnetic field radiation GB/T17626.3-1998 Level 3

Electric Fast Transient Pulse Group GB/T17626.4-1998 Level 3

Lightning (Surge) GB/T17626.5-1999 Level 3

Fan output contact power: 380V/15 (three-phase) or 220V/15

Communication: RS485 interface, can be uploaded to the server through GPRS/GSM, TCP/IP, and modem

Design of Massive Alarm Information Storage

Oxygen and SF6 use imported original sensors, with a general service life of ≥ 10 years in air

Dimensions: 700 * 200 * 75mm

Main functions of SF6 leakage monitoring and alarm system

Complete detection functions

SF6 gas detection function in the environment

Quantitative detection function of oxygen in the environment

Environmental temperature and humidity detection function

Simultaneous monitoring of multiple regions

Comprehensive alarm handling

SF6 gas leakage over limit alarm function

Hypoxia alarm function

Temperature and humidity limit alarm function

Automatically start the fan function when an alarm is triggered

When setting up multiple regions, fans can be started in different regions

Alarm and monitoring data remote transmission function

Humanized and convenient functions

Timed exhaust and forced exhaust function

LCD screen backlight automatic shutdown function