MDK Density Switch
These instruments are used to monitor the density of SF6 gas in sealed tanks, and can be widely used in medium voltage switchgear and RMU. They’re suitable for outdoor harsh external conditions.
They can provide multiple solutions to support new substations and the intelligent transformation of existing substations.
Application
SF6 gas insulated RMU
SF6 gas Insulated Switchgear
Features
Gas compensation ensures higher set point accuracy.
Micro switch enables normally open contacts and normally closed contacts freely switch to each other.
High shock resistance
Normally closed contacts will not set a false alarm due to vibration
Technical Data
Scale range: 0 to 3 bar
Accuracy of set point：±2.0% (–30 °C to +50 °C )
Degree of protection: IP42
Ambient conditions: -30°C to 60°C, relative humidity ≤95%RH
Leakage rate: ≤1 × 10-9 Pa·m3/s (Helium leakage inspection)
Interface size: G1/4 (customizable)
Installation method: axial
Electrical connection: Plug-in connection
cable size: 0.2mm to 2.5mm2
Insulation properties:
Insulation resistance: >100 MW (500 V DC)
Withstand voltage: 2kV, 50/60 Hz 1 min
Contact type: Mirco switch
Impact rating: 15g
Contact electrical parameters: 30W/50VA, 1A (maximum)
220VDC/380V 50/60Hz (maximum)
Weight: 0.3kg
Pressure element: European bourdon tubes
Options:
Measurement Scale
Wide temperature range -60°C to +60°C
Can detect SF6, Air, N2, SF6 + N2 and other gases
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