HM100PR Uhv Sf6 Density Monitor
HM100PR Uhv SF6 Density Monitor adopts highly reliable circuit design, multilevel isolation and filtering technology, effectively preventing conductive interference.
Drawing of HM100PR EHV SF6Density Monitor
Application of HM100PR EHV SF6Density Monitor
SF6 Gas Insulated Switchgear (GIS)
SF6 Insulated Circuit Breakers
SF6 Insulated Pole-Mounted Switch
SF6 Insulated Transformers
SF6 Insulated Mutual Inductor
SF6 Insulated Busbar Systems
Feature of HM100PR EHV SF6Density Monitor
They adopt highly reliable circuit design, multilevel isolation and filtering technology, effectively preventing conductive interference.
They adopt a full-body shield design, stainless steel shield, shielding junction box and military-grade shielding glass, ensuring anti-electromagnetic radiation interference ability.
They are able to use the backstage of optical fibre communication to prevent the transmission of data by electromagnetic interference.
Using a high-precision SF6 density algorithm, background monitoring data will coincide with the field instructions.
They are fully compatible with standard SF6 remote products; in strong interference occasions they do not need further modifications.
The temperature compensator ensures greater accuracy of the instrumentation pressure measurement.
Suitable for installation indoor or outdoor.
Overpressure alarm, dual alarm or double locking, and many more solutions up to four switch contacts can achieve safer and more secure gas density monitoring
Technical Data of HM100PR EHV SF6Density 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 500 V) |
| Withstand voltage: | 2kV, 50/60 Hz 1 min |
| Contact type: | Magnetic 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: | 24V DC |
| Power consumption: | < 2W |
| Communication mode: | RS485 or Single-mode fiber |
| Protocol: | ModBus RTU |
| Baud rate: | 9600bps |
Anti-electromagnetic interference
| IEC61000-4-2： | level 4 /A (8KV/15kV) |
| IEC61000-4-3： | Exceed national standard requirements /A (30V/m) |
| IEC61000-4-4： | level 4/A (4KV) |
| IEC61000-4-5： | level 4/A (+/-2Kv) |
| IEC61000-4-6： | level 3/A (10V) |
| IEC61000-4-8： | level 5/A (100A/m) |
| IEC61000-4-9： | level 5/A (100 0A/m) |
| IEC61000-4-10： | level 5/A (100A/m) |
| IEC61000-4-12： | Exceed national standard requirements /A (4KV) |
| IEC61000-4-17： | level 3/A (10%UN) |
| IEC61000-4-29： | 0.1s/A (40%UT/70%UT) |
Options of HM100PR EHV SF6Density Monitor
Power-frequency withstand voltage: 2.5kV 50/60 Hz 1min
Oil-filled
Measuring medium: SF6, Air, N2, SF6 + N2 and other gases
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