SF6 leakage alarm system

SF6 leakage alarm system：Fan start: When the oxygen content is ≤ 18% or the SF6 gas concentration is>1000ppm or the ambient temperature is higher than the set value, the fan will automatically start for ventilation and directly restore normal operation. The start and stop time of the fan can be freely set in different time periods, and the fan can be manually forced to start. Data remote transmission: using universal standard protocols for data communication with other business systems.

SF6 leakage monitoring subsystemReal time qualitative and quantitative detection of trace SF6 gas leakage, oxygen concentration, and indoor temperature and humidity in GIS indoor air. The system collects and processes monitoring information from all sensors, sends out voice commands, controls fans, etc.

SF6 leakage alarm systemTechnical Specifications:

1. SF6 concentration detection range: 0~3000PPM; Over limit alarm point: adjustable at 1000ppm (national standard value); Accuracy<2% FS

2. Oxygen detection range: 0-25%, oxygen deficiency alarm point: 18% (national standard value) adjustable; Accuracy<0.4% FS

3. Temperature detection range: -30-+99 ℃; Humidity detection range: 10-99% RH

4. Working power supply: AC 198-242V 50Hz;

5. Fan output power contact: AC220V/40A, normally open node;

6. Display screen size: Touch color LCD screen (7 inches), user-friendly interface operation;

7. The average working time of the system is 10 years;

8. Host data recording time: 12 months;

9. Communication method: RS-485 bus mode;

10. Communication protocol: General Electric Power Communication Protocol;

11. Insulation performance between the shell and the power supply:>10M Ω;

12. Electrical strength between the shell and the power supply:>1000V;

13. Electromagnetic compatibility characteristics: Fast transient pulse group GB/T17626.4-1999 level 3;

14. Lightning strike (surge) GB/T17626.5-1999 Level 3;

Wiring instructions:

Control function of fan:

A、 Timed start of fan (the time period for timed start and stop of the fan can be set every day, and the duration after the fan is started can also be set)

B、 Manually start the fan (there is a manual control button on the host to manually start the fan)

C、 Automatically start the fan (to achieve linkage function, first set the fan control box to automatic control)

Note: When the SF6 gas concentration is ≥ 1000ppm and the oxygen content is ≤ 18%, the system automatically controls the start of ventilation until the SF6 concentration and oxygen content in the indoor environment return to normal

Fan control box: J2-5 in the middle section of the J2 sub row of the main engine，J2-6Normally open contacts, used for the action of turning on a single fan, these two serial ports are connected to the linkage contacts of the fan control box.

Fan controller: If a fan controller is configured, it can be wired according to our construction specification wiring diagram. Control the fan through the open nodes of the fan controller.