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SF6 Gas Insulated Switchgear (GIS)
SF6 Insulated Circuit Breakers
SF6 Insulated Pole-Mounted Switch
SF6 Transformers
SF6 Insulated Mutual Inductor
SF6 Gas Insulated Busbar Systems
The temperature compensator ensures greater accuracy of measurement.
Fiber optic interface, high data capacity, high communication speed, strong adaptability, long service life.
Strong anti-interference capability, in particular for powerful electromagnetic and static interference.
Suitable for installation indoor or outdoor.
Hermetically sealed case of stainless steel AISI 304
AISI 316 stainless steel gas connecting tubes
With the HUB self-developed optical interface, all monitoring points can be linked to higher IEDs, reducing the number of interfaces and saving IED resources.
With a perfect mechanical and electronic combination, local indication and instrumentation control can be achieved
Four pairs of contacts can achieve alarm overpressure, dual alarm or double lock and many other options to ensure the security and reliability of the gas density monitor
| Case diameter: | 100mm |
| Scale range: | -0.1 to 0.9MPa (customizable) |
| Accuracy: | (related to the measuring span; SF6 in gas phase) |
| a) At 20°C: | Class 1.0 or 1.5 |
| b) -40°C to +60°C: | Class 2.5 |
| Degree of protection: | IP65 |
| Ambient conditions: | -40°C to +60°C, relative humidity ≤ 95%RH |
| Leakage rate: | ≤ 1 × 10-9 Pa·m3/s （Helium leakage inspection) |
| Interface size | M20 × 1.5 (customizable) |
| Installation method: | radial or axial |
| Electrical connection: | Plug-in connection M20 × 1.5 sealing head |
| cable size: | 1.5mm2 recommended, 2.5mm2 maximum |
| Insulation properties: | |
| Insulation resistance: | >100 MW (DC 500V) |
| Withstand voltage: | 2kV, 50/60 Hz 1 min |
| Contact type: | gnetic snap-action switch |
| 80%Ag, 20%Ni, 10µm Au plated | |
| Impact rating: | 50g (oil-filled), 30g (non-oil-filled) |
| Contact electrical parameters: | 30W/50VA, 1A (maximum) |
| 220VDC/380V 50/60Hz (maximum) | |
| Watch glass: | Laminated safety glass |
| Weight: | 1.2kg |
| Pressure element: | European bourdon tubes |
Main electrical performance indicators and specifications of the remote transmission part
| Power supply: | DC 24V |
| Power consumption: | < 2W |
| Communication mode: | Optical cable |
| Protocol: | ModBus RTU |
| Baud rate: | 57600bps |
Anti-electromagnetic interference:
| IEC61000-4-2: | level 4 (15kV) |
| IEC61000-4-3: | level 3 (10V / m) |
| IEC61000-4-4: | level 4 (4kV) |
| IEC61000-4-5: | level 3 (+/- 2kV) |
| IEC61000-4-6: | level 3 (10V) |
| IEC61000-4-8: | level 5 (100A / m) |
Power-frequency withstand voltage: 2.5kV 50/60 Hz 1min
Oil-filled
Measuring medium: SF6, Air, N2, SF6 + N2 and other gases
