SF6 gas leakage online monitoring and alarm system installation basis: GB/T8905-1996 "Guidelines for Gas Management and Detection in sulfur hexafluoride Electrical Equipment" and DL 408-1991 "Safety Regulations for the Electrical Industry" (electrical parts of power plants and substations) and "Eighteen Major Anti-accident Measures for the Power Grid Company" special provisions, The distribution unit room equipped with SF6 equipment must ensure that the SF6 gas concentration is less than 1000ppm, in addition to the installation of strong ventilation devices, must be installed with alarm oxygen meter and SF6 gas concentration detection and alarm meter.

Industry safety regulations:

Article 191 Power distribution rooms and SF6 gas laboratories equipped with SF6 equipment must be equipped with powerful ventilation devices. The air outlet should be set at the bottom of the room.

Article 192 In the room, when the equipment is filled with SF6 gas, the relative humidity of the surrounding environment should be less than 80%, and the ventilation system must be turned on to avoid SF6 gas leaking into the work area. The SF6 gas content in the working area air shall not exceed 1000ppm.

Article 196 The staff entering the SF6 distribution unit room must first ventilate for 15min, and measure the SF6 gas content with a leak detector, try to avoid one person entering the SF6 distribution unit room for inspection, and no one is allowed to enter the maintenance work.

Article 198 Entering the SF6 power distribution unit room low area or cable trench work should first test whether the oxygen content is qualified.

Article 199 An oxygen meter and an SF6 gas leak alarm meter shall be installed in the low area of the SF6 distribution unit. These instruments should be tested regularly to ensure their good condition.

Article 203 In the event of an emergency, all ventilation systems should be opened immediately for ventilation. In the event of a rupture of the explosion-proof film of the equipment, power should be cut off and the equipment should be wiped clean with gasoline or acetone.

Cabinet frame type and GIS entrance wall mounted two options, imported original sensor, long life, safe and reliable!

SF6 online gas leakage monitoring and alarm system device WINFOSS-S1 meets the SF6 industry safety regulations for SF6 substation maintenance and management of the four functional requirements:

A. Hypoxia and excessive SF6 alarm.

B. The fan exhaust function when the environment is abnormal.

C. Local display and audible and visual alarm warning at the entrance of the switch room.

D. Define any time period or forced ventilation function.

Product application

The SF6 Online gas leakage monitoring and alarm system device (WINFOSS-S1) can be used for the integrated monitoring and control of indoor or closed environments in power systems (6KV-1000KV high-voltage switch rooms with different voltage levels).

A. SF6 High voltage ring network cabinet switch room.

B. GIS Room.

C. SF6 Laboratory.

D. All environments where SF6 devices are installed.

The product fully considers various voltage levels of SF6 switching station occasions; Whether it is a small substation with more than 10 intervals or only a few intervals of GIS switch room, the high voltage ring cabinet is your application of choice.

Product function

Status monitoring

A. SF6 concentration and oxygen content monitoring: Real-time monitoring of SF6 concentration and oxygen content in the environment of the switch station 24 hours A day, 365 days. The system host and the computer in the monitoring room display the monitoring results synchronously.

B. Temperature and humidity online monitoring: 365 days 24 hours real-time monitoring and dynamic display of the current switch station ambient temperature and humidity values.

C. Real-time monitoring of system operating status: real-time monitoring of the communication status of each monitoring unit in the system, and synchronous display of monitoring results on the interface of the system host and monitoring station.

D. Automatic voice prompt: When the staff is near the entrance of the switch station, the system automatically prompts the environmental safety status in Mandarin to remind the staff whether they can safely enter the switch room, and the voice volume is adjustable.

E. Sound and light alarm: When SF6 concentration exceeds the standard or hypoxia is detected, the system prompts on-site personnel to deal with it in time with high-frequency whistle and warning light alarm.

F. Fan running status indicator: Displays the current fan running status. If the fan is in the stopped state, the latest fan start/stop time is displayed to determine whether forced ventilation is required before entering the switch room.

Safety control

A Fan linkage control: When the SF6 concentration is detected in real time to exceed 1000ppm or hypoxia is less than 19.6%, the fan ventilation will be automatically controlled until SF6 and oxygen concentration return to normal, and the fan will be automatically shut down after continuous ventilation for 10 minutes.

B. Fan timing control: customized period ventilation (up to 24 periods) to ensure that the switch room can be ventilated on time every day. Ventilation start/stop time can be set flexibly. It can meet the various exhaust requirements of users.

C. Remote alarm: provides the form of hard contact to support the connection with the remote device to achieve remote alarm in the main control room or dispatch center.

Data processing

A. Monitoring data storage: Data storage of abnormal environmental status. The mass storage capacity of monitoring historical data meets the operation requirements for more than 10 years.

B. Historical data query: The historical data of any time period can be queried and managed in the host menu or the computer in the main control room.

C. System self-healing, self-recovery: independent, dedicated fault self-detection, self-healing module in the system program error can be self-guided, self-recovery.

D. Full touch operation function: full touch operation mode, the system can locate the selection information input according to the finger touch icon or menu position, which shortens the reaction time of the system and saves the user waiting time; At the same time, the system is more convenient to operate, and the appearance is simple and beautiful.

Product characteristics

A. RS485(MODBUS) bus technology: strong anti-interference, to eliminate the phenomenon of network paralysis and data disorder, flexible networking mode, field wiring is more convenient and simple.

B. DSP digital signal processing technology: 32-bit wide data processing, data sampling is more accurate and reliable.

C. All-weather online monitoring: all-weather online monitoring and control function to ensure the safety of maintenance work.

D. Multi-master communication mode: When an individual monitoring unit fails, it does not affect the normal operation of other equipment and the entire system.

E. Low power chip design: highly integrated components, reducing the weight and volume of the host.

F. Support hot swap: the number of monitoring units can be arbitrarily increased or decreased during system operation, and the normal operation of the system will not be terminated during maintenance or expansion of monitoring units.

G. LCD Chinese display: dynamic high-definition color LCD display, high resolution, fast refresh speed, interface browsing is very comfortable.

H. Special environmental applications: suitable for applications in high altitude and cold environments (see environmental requirements).

I. Long-term data storage: Historical monitoring data is stored for a long time. Users do not delete the data even if the system is powered off for 10 years.

J. Flexible expansion: After the user switch unit is increased, the monitor can be easily expanded and the expansion cost can be saved.

K. Simple operation: clear interface structure, convenient touch operation. Operators need only simple training to be skilled in use.

L. Screen protection: unattended screen automatic protection function, environmental protection and energy saving, significantly improve the service life of the host.

M. Host software driver: Support of host computer software to realize the import, management, analysis and printing of monitoring data; Automatic backup for further management and trend analysis.

N. Function customization and expansion: Prepare the expansion interface, can be connected to other signals and control equipment on site, personalized according to user needs.

Display interface

A. 10.4-inch LCD display, Configuration Wang Chinese interface, touch operation.

B. The operation and use only need to master two steps, simple and convenient.

C. The monitoring results of each monitoring unit can be curvilinear.

Hierarchical monitoring

A switch station local monitoring

The on-site wall-mounted main machine is installed at the entrance of the switch station. When the system detects any abnormal SF6 concentration or oxygen content at any interval in the switch station, the alarm will be synchronized by sound and light. It is easy for staff to understand the current safety status before entering the switch station.

B. On-site monitoring at the switch station

The on-site wall-mounted main machine is installed at the entrance of the switch station. When the system detects any abnormal SF6 concentration or oxygen content at any interval in the switch station, the alarm will be synchronized by sound and light. It is easy for staff to understand the current safety status before entering the switch station.

C. Monitoring the dispatch center

The remote communication device can communicate with the remote communication device by hard contact point to realize the remote alarm of the dispatching center. The function is convenient and practical.

Technical parameter

A. SF6 and oxygen detection indicators.

B. SF6 Measurement range: 1 ~ 3000ppmv.

C. Detection accuracy: < 5%FS.

D. SF6 Alarm point: 1000 PPMV The value ranges from 100 to 1000.

E. Oxygen measurement range 1 ~ 25% Detection accuracy < 1% FS.

F. Hypoxia alarm point; 18.0% can be defined by 15.0-18.5%.

G. Temperature detection range: -30 ~ +70℃, detection accuracy ±1℃.

H. Humidity detection range: 1-99%RH; Detection accuracy ±1%RH.