SF6 recovery system AGRU-8 series

SF6 recovery system AGRU-8 series

We developed the AGRU-8 for our customers, who needed more storage and retrieval capacity than with smaller trolleys, but without the high volume and price of wheeled equipment. The equipment is designed to recover, temporarily store, condition and provide SF6 gas. The equipment is designed for field use in insulated metal-clad switches, bus ducts and individual switches. The AGRU-8 SF6 Gas Handling Equipment is fully assembled on two heavy duty wheels, which are sufficiently reinforced to minimize vibrations. The trolley is completed with an eyebolt, hose with hook and power cable.

Features

Storage not included. Two options:

• • 300l- ASME tank with scale
• +3 Horizontal cylinders with evaporator and balance

Vacuum capacity:

• • 30 m3/h (60Hz - 110V ) <1mbar → 40 m3/h
• • 25 m3/h (50Hz - 220V) <1mbar → 35 m3/h
• Evacuation pressure < 0.5 mbar
• Weight: 950 lbs - 432 Kg
• Dimensions: 74''x45''x58'' - 190x114x147 cm - (H x W x D)
• Optional: PLC control with touch screen, tank heater, stainless steel pipes and hoses, vacuum compressor and vacuum pump upgrade

Functions:

SF6 gas recovery, purification and storage from the breaker to the storage tank

Evacuation:

• Hoses < 0.5 mbar
• Handling trolley SF6 < 0.5 mbar
• Air and humidity of the switch < 0.5 mbar
• Purification of the SF6 gas is achieved by recirculating it through the filter system:
• (D1) & (D2)- Dry Filter - Contains activated alumina to aid in the drying and purification of SF6
• (P1) - Purification Filter - Contains a 5x molecular sieve to remove arches from the product
• (F1) - Particle Filter - Will filter out all material particles below 0.1µm
• Recharge pressure of SF6 gas from storage tank to regulated switch
• Evacuation of SF6 gas from handling equipment to an external storage tank for maintenance purposes

Characteristics:

• Mounted on a trolley with 16" (400mm) tires for easy movement
• Very easy to handle - only two valves to change and operate in the different modes
• High pressure, oil-free, directly controlled compressor with a 1000:1 compression ratio (capable of 1000psi - 69 bar)
• Capable of storing SF6 liquid gas
• Purifies, dries and filters down to 0.1 µm during recovery and re-pressurization
• Easy filter replacement without disconnecting any tubes or using any special tools
• Auxiliary connections allow storage of infinite amounts of gas using external tanks
• Includes 9.8ft / 3m hose and power cord
• Moisture indicator changes color to indicate gas humidity
• Mounted on a wheeled trolley with storage rack where it can hold up to 3 SF6 cylinders. 156 kg storage with the four cylinders or 300l (300kg) with the storage tank

Applications:

• Recover and purify SF6
• Evacuate air and moisture before refilling
• Can be used with SF6 cylinders
• Storage of SF6 in liquid form in the storage tank or in auxiliary bottles
• Regulated SF6 filling
• SF6 purification (removal of particles, moisture and products from SF6 decomposition)

  AGRU-8 Specifications
  Type	Portable SF6 Gas Recovery Unit
  Physical specifications	58" (1470 mm) W x 45" (1140 mm) D x 74" (1900 mm) // 950 lbs. (432 kgs.)
  Food	110Vac/60Hz - 220Vac/50Hz - other configurations available (choose when ordering)
  SF6 Compressor	Three single-stage, oil-free high pressure compressors with direct drive capable of producing pressures of 70 bar. 0.5kW motor, 3450 rpm. Compressor built in metal with a displacement of 6.6 m3h-1 (60Hz).
  Suction pressure regulator	A suction pressure regulator, brass body, 0-2 bar spring
  Vacuum Compressor	One diaphragm type vacuum compressor, 0.24kW, displacement 5 m3h-1 (60 Hz), ultimate vacuum 20 mbar. Optional, available upgrade the vacuum compressor to reach an ultimate pressure while recovering SF6 < 1 mbar - this allows 99.9% SF6 to be recovered
  Equalization circuit	An equalisation circuit, allows the compressor to be restarted by high pressure
  Check valve	Nine check valves, brass, prevent high pressures from returning to the compressor when operating at low equalization pressures
  Condenser	A high-efficiency, 4-step, ventilated SF6 condenser assists in the liquefaction of SF6 for high ambient temperatures
  Discharge pressure	A discharge pressure switch automatically cuts off when the maximum permissible pressure is reached.
  Vacuum pump	Engine: 1.1 kW, 1750 RPM, TEFC electric motor Optional; increase displacement to 40 m3h-1 (60Hz) Displacement: Sealing pressure: 0.08 mbar. Pump also includes: non-return
  Storage tank	The cylinders are secured in a tray and by a manifold, to provide storage of up to 156 kgs. of SF6 in a liquid state indefinitely, at room temperature or less than 114ºF (45.5ºC), without the need for refrigeration. The AGRU-8 comes equipped with an external storage connection, where any SF6 gas cylinder or tank (for minimum pressures of 40bar) can be connected to store the desired amount of gas. All storage tanks will include relief valves and inlet/outlet valves
  Filters	(D1) & (D2) - Pre-Drying and Drying Filter - Contains activated alumina to aid in the drying and purification of SF6 (P1) - Purification Filter - Contains a 5x molecular sieve to remove arches from the product (F1) - Particle Filter - Will filter out all material particles below 0.1µm
  Valves	Designed for pressure, temperature and flow. Teflon sealed bronze body, quarter turn.
  Pressure gauges	One for pressure equipment, composite (4" stainless steel) One for discharge pressure (4" stainless steel)
  Vacuum gauge	0-50 mbar for Vacuum System
  Pressure regulator	A pressure regulator, brass body, 0-7 bar spring, allows safe regulated filling of SF6
  Hoses	Two strong rubber hoses: 12 mm I.D. X 4.5 meter. Long, complete with self-sealing quick-connect terminals Hoses are suitable for system pressure, temperature and flow.
  AGRU-8 Upgrades and Optional Accessories
  Stainless steel pipe	Unit can be supplied with stainless steel pipe instead of standard copper pipe
  Stainless steel hoses	Unit can be supplied with stainless steel hoses instead of rubber hoses
  Storage tank	Optional SF6 cylinders. Size: H, 52 kg, CGA 590 valve connection without check valve, 99.9% dry can be supplied. The AGRU-8 has a capacity of up to 4 cylinders giving a total capacity of 158 kgs. Optional SF6 storage tank, 300 litres (300 kgs.), can be supplied to increase the capacity of the AGRU-8.
  Storage tank heater	300 W storage tank heater. Heater comes with its own power cord and a thermostat pre-set at 125°F (52°C) and is protected from overheating by a temperature cut-off. The heater maintains a uniform temperature for a constant positive pressure, allowing the filling process to be accelerated
  Electronic Scale	Optional electronic scale to monitor the filling of SF6 cylinders. The scale system comes complete with configurable maximum weight points and a carriage attachment system
  DN-20 style connections	Unit can be supplied with DN-20 style connections on both the equipment and the hoses
  Increased hose length	Unit can be supplied with 6m of hose instead of 3m
  PLC control Touch screen	Unit can be supplied with touch screen PLC control with automatic or manual valve control instead of the conventional control panel
  Compressor or Vacuum Pump Upgrade	Unit can be improved by reducing the final pressure of the vacuum compressor < 1mbar. Vacuum pump displacement can be improved to 40 m3h-1(60 Hz)
  AGRU-8 Consumables
  Filter D-1	Dry filter - recommended to be changed every 50 hours of compressor operation
  Filter P-1	Filter Purification - recommended to be changed every 50 hours of compressor operation
  Filter F-1	Particle filter - recommended to be changed every 50 hours of compressor operation
  Vacuum pump oil	The oil in the vacuum pump has to be checked every time it is switched on. Available in two sizes: 946 ml or 3780 ml