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GSH-C-NYA-30/60 Fully Automatic SF₆ Gas Recovery & Reclaiming Unit

GSH-C-NYA-30/60 Fully Automatic SF₆ Gas Recovery & Reclaiming Unit

GSH-C-NYA-30/60 fully automatic SF6 gas recovery unit: 30m³/h recovery rate, 60m³/h vacuum capacity, PLC touch control, integrates recovery, vacuum, purification, liquefied storage and refilling. Multi-stage filtration, oil-free compression, multiple safety protections. Mobile design for on-site GIS & circuit breaker maintenance, meets IEC 60480 and DL/T 662 standards.

Description
Specifications
Applications
Advantages
FAQ
Recommended Products

Description

GSH-C-NYA-30/60 is a professional fully automatic SF₆ gas handling system designed for power utilities, switchgear manufacturers, EPC contractors and third-party testing institutions. It is dedicated to SF₆ gas recovery, vacuumizing, purification, liquefied storage and refilling during installation, commissioning, routine maintenance and decommissioning of gas-insulated switchgear (GIS), SF₆ circuit breakers, instrument transformers and other gas-insulated HV equipment.

The system strictly complies with IEC 60480, IEC 62271-4 and DL/T 662-2017 standards. It adopts a two-stage oil-free lubrication compressor and high-capacity dual-stage rotary vane vacuum pump, with a recovery rate of 30m³/h and vacuum pumping speed of 60m³/h. The multi-stage deep purification system includes particulate filters, molecular sieve dryers and oil-mist separators, effectively removing moisture, decomposition products, oil residues and dust particles. Recovered gas meets IEC 60480 reuse standards and can be directly refilled into equipment.

Equipped with a 7-inch PLC touch screen, the unit supports one-key fully automatic operation and manual step-by-step control. It has built-in comprehensive safety protection mechanisms including over-pressure, over-current, over-temperature and low oil level alarms. The mobile cabinet design with casters and handle is suitable for on-site mobile operation in substations and power plants. It realizes closed-loop SF₆ gas management, reduces gas emissions, lowers operation costs and meets environmental protection requirements.

Specifications

Parameter	Specification
System Functions	SF₆ recovery, vacuumizing, purification drying, liquefied storage, pressure-regulated refilling
Recovery Rate	30 m³/h (at initial pressure 0.8MPa)
Final Recovery Pressure	≤ 50 kPa (absolute)
Vacuum Pumping Speed	60 m³/h
Ultimate Vacuum	≤ 10 Pa
Vacuum Rise Rate	≤ 400 Pa / 24h
Compressor Type	Two-stage oil-free SF₆ special compressor
Vacuum Pump Type	Dual-stage rotary vane vacuum pump
Purification Performance
Particulate Filtration	≤ 0.1μm, 99.99% efficiency
Moisture Content After Purification	≤ 40 ppmV
Oil Content After Purification	≤ 10 ppmW
SF₆ Purity After Recovery	≥ 98% by volume
Storage Tank	Standard configuration with liquefied storage tank (customizable capacity)
Control Mode	PLC + 7" touch screen, fully automatic / manual dual mode
Safety Protection	Over-pressure, over-current, over-temperature, low oil level alarm, emergency stop, safety valve
System Leakage Rate	≤ 0.5% per year
Input Power Supply	AC 380V ± 10%, 50Hz (220V customizable)
Operating Temperature	-10℃ ~ +50℃
Ambient Humidity	≤ 85% RH (non-condensing)
Structure Form	Mobile cabinet type with casters and handle

Applications

Core Application Objects

Gas-insulated switchgear (GIS) of 10kV ~ 500kV voltage grade
SF₆ circuit breakers, load switchgear and ring main units
SF₆ instrument transformers (CT/PT) and gas-insulated busbars
Other SF₆-insulated electrical equipment

Typical Usage Scenarios

Power grid operation & maintenance: substation SF₆ equipment routine maintenance, fault repair and gas replacement
Switchgear manufacturers: factory assembly test, ex-factory quality inspection and after-sales on-site service
Power engineering EPC companies: equipment installation, commissioning and handover acceptance
Third-party testing institutions: SF₆ gas quality testing and equipment insulation diagnosis
Decommissioning of old equipment: SF₆ gas recovery and treatment before equipment scrapping

Advantages

Q: Can the recovered SF₆ gas be directly refilled and reused?

A: Yes. The unit is equipped with multi-stage deep purification system including drying, oil removal and dust filtration. After one recovery cycle, moisture, oil content and particulate impurities all meet the requirements of IEC 60480 standard for reused gas, and can be directly refilled into electrical equipment. For gas with severe decomposition after arc fault, it is recommended to perform secondary purification or send to professional reclaiming institutions.

Q: What is the difference between oil-free and oil-lubricated compressors?

A: Oil-lubricated compressors will cause oil contamination to SF₆ gas, affecting insulation performance and increasing decomposition products. The oil-free compressor adopted by this unit completely avoids oil contamination, ensures the purity of recovered gas, meets the requirements of HV equipment for gas quality, and reduces later gas treatment cost.

Q: Can this unit be used for on-site substation maintenance?

A: Yes. The unit adopts mobile cabinet design with universal casters and traction handle, equipped with quick-connect pipeline connectors. It can be easily transported to on-site work positions, and the whole operation can be completed without fixed installation. It is very suitable for on-site maintenance of substations and power plants.

Q: What safety protection does the equipment have?

A: The system is equipped with comprehensive safety mechanisms: electrical protection includes over-current, over-temperature and short-circuit protection; pressure protection includes high-pressure alarm, safety valve pressure relief and emergency stop button; vacuum system is equipped with anti-oil return device. The storage tank is manufactured and inspected in strict accordance with pressure vessel standards to ensure operation safety.

FAQ

Q: Can the recovered SF₆ gas be directly reused?
A: Yes. The 4-stage deep purification system can effectively remove moisture, oil, dust and other impurities from recovered SF₆ gas. After purification, the gas quality meets GB/T 8905-2012 new gas standard and can be directly refilled into equipment for use.
Q: Does it require three-phase power supply?
A: No. GSH-R-5 uses AC220V single-phase power supply, which is widely available in distribution rooms, residential areas and industrial sites, greatly improving on-site operation convenience.
Q: What is the maximum capacity of ring main unit that this unit can handle?
A: It can handle 10kV-35kV ring main unit single gas chambers up to 0.1m³, which covers the vast majority of mainstream ring main unit models on the market.
Q: What is the maintenance cycle of the unit?
A: The adsorbent in the purification system should be replaced every 2 years or after processing 1000kg of SF₆ gas. The vacuum pump oil should be changed every 6 months. Annual calibration of pressure gauges and vacuum gauges is recommended.