SF6 Leak Detection System for Enclosed GIS Substations
The Advanced Energy Innova 3731 SF6 leak detection system uses photoacoustic spectroscopy (PAS) technology. It offers highly accurate and stable quantitative gas detection.
- Available in 12- or 24-channel configuration to monitor large GIS installation
- Simple installation procedure
- Low cost of ownership
- Multipoint sampling
- Detection trending and automatic alarms
- Technical Specs
- Service & Support
Advanced Energy’s Innova® 3731 SF6 system utilizes the ultra-sensitive photoacoustic sensing technique to provide a leak detection solution that monitors large switchgear rooms. The system verifies that GIS equipment operates below the 0.5% yearly leakage rate, which is the industrial target. And the 3731 system quickly detects any excessive increase in the leak rate.
Analog output is available for detection trending over time. Measurements are also stored in the internal memory. They can be exported to a remote LAN computer via the user-friendly software interface.
- Calibrate the monitor once a year (no equipment outage needed)
- Lower costs
- Set up tasks using either the remote/offline software or the front panel push-keys
- Enable a direct and integral leak detection solution that can monitor large switchgear rooms
- Achieve exceptional accuracy
- Standalone Multipoint SF6 leak monitor with superior photoacoustic detection (detection limit = 6 ppb)
- Independent from pressure or density readings
- Highly reliable and stable
- Extensive sampling-point distribution over the whole enclosed substation
- Monitor and sampler units are rack-mountable on a standard 19 in chassis
0.006 ppm at 5 SIT
Typically four orders of magnitude (i.e. 10,000 times the detection limit at 5 SIT); using two-span concentrations it can be expanded to five orders of magnitude
1% of measured value
(Measured at 20°C, 1013 mbar, and relative humidity (RH): 60% (a concentration of 100x detection limit4 was used in determining these specifications)
The 3731 automatically compensates for temperature and pressure fluctuations in its analysis cell and can compensate for water vapor in the air sample; if an optical filter is installed to measure a known interferent, the 3731 can cross compensate for the interferent
Internal Data Storage Capacity
The total space available in display memory to store data ia 131072 measurement cycles; one cycle is measurement of SF6 and water vapor on a given channel
5 to 40°C (41 to 104°F)
Max relative humidity 80% for temperatures up to 31°C decreasing linearly to 50% relative humidity at 40°C
H x W x D
175 x 483 x 375mm (6.9 x 19 x 14.8 in)
24.5 kg (53.5 lb)
Pumping System Specifications
Pumping Rate30 cm3/s (flushing sampling tube)
5 cm3/s (flushing measurement chamber)
Air Volume Per Sample
Total Internal Volume
60 cm3 (of the measurement system)
Electrical and Communication Specifications
~135 VA (monitor and sampler); 100 to 240 VAC ±10%, 50 to 60 Hz
Alarm Relay Socket
For connection to one or two alarm relays (visual/audio)
Alarm levels for each gas are user-defined
System On/Running status available
Max 25 VDC, max 100 mA
3 V lithium battery, lifetime 5 years
Three interfaces: USB, Ethernet, and RS232, for data exchange and remote control of the instrument
Via USB or Ethernet interface
Safety and Standards Specifications
EN/IEC 61010-1 3rd Edition: Safety Requirements for electrical equipment for measurement, control, and laboratory use.
EN 61326-1:2013: Electrical equipment for measurement, control and laboratory use – EMC requirements; Part 1: General requirements
CE-mark indicates compliance with: EMC Directive and Low Voltage Directive
- SF6 leak detection in enclosed GIS substations
Specifications are subject to change without notice. Not all options and accessories are available for all models and configurations. Dimensions listed generally refer to standard configurations and module bodies only. Please confirm technical specifications and customizations with a sales representative. Advanced Energy is not responsible for errors or omissions.
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