Lightweight, rugged cart to evacuate and refill SF6 equipment in the field
The ARFU-2 evacuates air and moisture from switchgear and circuit-breaker compartments and then allows regulated refilling with standard SF6 gas cylinders, all from a single portable cart.
Advantages
Two operations, one cart
The ARFU-2 brings together prior evacuation of air and moisture and subsequent regulated refilling in a single unit, avoiding the need to bring two separate units to site.
Single-valve operation
A 3-way ball valve switches between evacuation and refilling without rewiring hoses, simplifying operation in the field.
High-capacity vacuum pump
The permanently mounted vacuum pump reaches a sealed pressure below 0.03 mbar, leaving the compartment ready for refilling.
Regulated, controlled refilling
Refilling is user-adjustable through a pressure regulator, with an integral vacuum gauge to track every stage of the process.
Built for substation work
The lightweight yet rugged frame rides on large tires that make it easy to move over gravel yards or uneven ground.
Applications
- Evacuation of air and moisture prior to filling SF6 equipment.
- Regulated filling of switchgear and circuit-breaker compartments with SF6.
- Field commissioning and maintenance of gas-insulated equipment.
- Monitoring of vacuum and filling pressure through integral gauges.
About the product
The process runs in two stages linked by the same 3-way valve: the compartment is first evacuated with the vacuum pump until free of air and moisture, down to a sealed pressure below 0.03 mbar; the same valve then connects the SF6 cylinder to the equipment through the pressure regulator, which controls the filling pressure while the vacuum gauge is used to follow the process.
The cart runs on 120 V or 220 V single-phase power and ships with 3 m hoses and a power cable. Available accessories: special supply voltages on request and longer hoses for hard-to-reach installations.
Technical specifications
| Vacuum pump | 10 CFM (17 m³/h) |
| Sealed vacuum | Below 0.03 mbar |
| Valve | 3-way ball valve, evacuation/filling |
| Filling | User-regulated through pressure regulator |
| Power supply | 120 V AC, 60 Hz / 220 V AC, 50/60 Hz, single-phase |
| Dimensions (H × W × D) | 1500 × 600 × 400 mm |
| Weight | 31 kg |
| Hoses | 3 m, supplied with power cable |
Frequently asked questions
What two operations does the ARFU-2 perform?
It evacuates air and moisture from the compartment before filling, then regulates the filling of SF6 from standard cylinders.
How do you switch between evacuation and filling?
With a single 3-way ball valve, with no need to rewire hoses.
What vacuum level does it reach before filling?
The vacuum pump reaches a sealed pressure below 0.03 mbar.
Is it suited to substation work on uneven ground?
Yes. Its lightweight, rugged frame rides on large tires designed for gravel and uneven surfaces.
Who regulates the filling pressure?
The user, through a pressure regulator, using the integral vacuum gauge as a reference.
Download the catalogue of Gas Filling Regulation Unit ARFU-2 SF6.
If you want to acquire Equipos de manipulación de sf6 with quality, you can also consult prices of Equipos de manipulación de sf6.
If you have any doubts or need advice from our engineers, don't hesitate to contact us and we will be pleased to help you. You can also call us at (+34) 982 20 99 20.