Advanced Energy - Model Innova 3731 -SF6 Leak Detection System for Enclosed GIS Substations

• 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

• 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

Measurement Specifications

Detection Limit
0.006 ppm at 5 SIT

Dynamic Range
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

Repeatability
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)

Interference
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

Environmental Specifications

Operating Temperature
5 to 40°C (41 to 104°F)

Humidity
Max relative humidity 80% for temperatures up to 31°C decreasing linearly to 50% relative humidity at 40°C

Enclosure
IP 20

H x W x D
175 x 483 x 375mm (6.9 x 19 x 14.8 in)

Weight
24.5 kg (53.5 lb)

Pumping System Specifications

Pumping Rate
30 cm3/s (flushing sampling tube)
5 cm3/s (flushing measurement chamber)

Air Volume Per Sample
See data sheet

Total Internal Volume
60 cm3 (of the measurement system)

Electrical and Communication Specifications

Power Ratings
~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

Back-Up Battery
3 V lithium battery, lifetime 5 years

Monitor Interface
Three interfaces: USB, Ethernet, and RS232, for data exchange and remote control of the instrument

Software Communication
Via USB or Ethernet interface

Safety and Standards Specifications

Safety
EN/IEC 61010-1 3rd Edition: Safety Requirements for electrical equipment for measurement, control, and laboratory use.

EMC
EN 61326-1:2013: Electrical equipment for measurement, control and laboratory use – EMC requirements; Part 1: General requirements

Standards Compliance
CE-mark indicates compliance with: EMC Directive and Low Voltage Directive

Safety

EN/IEC 61010-1 3rd Edition: Safety Requirements for electrical equipment for measurement, control, and laboratory use.

EMC

EN 61326-1:2013: Electrical equipment for measurement, control and laboratory use – EMC requirements; Part 1: General requirements

Standards Compliance

CE-mark indicates compliance with: EMC Directive and Low Voltage Directive

Typical Applications

SF6 leak detection in enclosed GIS substations