Vacuum of GIS Gas Compartments Service

Vacuum pumping of GIS gas compartments is a mandatory and critical process before SF₆ gas filling. Any residual air or moisture inside the compartment can severely reduce dielectric strength, cause partial discharge, and shorten equipment life.

EngineerBari™ performs controlled deep vacuum pumping using high-capacity vacuum pumps and calibrated instruments, strictly following IEC standards and OEM procedures.

Scope of Service

✅Connection to GIS gas filling/service valves

✅Pre-vacuum inspection of gas compartments

✅ Deep vacuum pumping to specified pressure levels

✅Moisture and air removal from GIS compartments

✅Vacuum holding test to verify gas tightness

✅Monitoring and recording vacuum pressure values

✅Preparation of compartments for SF₆ gas filling

Applicable Equipment

✅Gas Insulated Switchgear (GIS)

✅GIS circuit breaker gas chambers

✅GIS busbar and disconnector compartments

✅Gas Insulated Lines (GIL)

✅Indoor & outdoor GIS substations

When This Service Is Required

✅Before initial SF₆ gas filling (new equipment)

✅After SF₆ gas recovery

✅After maintenance or internal inspection

✅Following leakage repair

✅Prior to recommissioning of GIS equipment

Standards & Compliance

✅IEC 62271 series

✅IEC 60480

✅OEM-specific GIS vacuum requirements

✅Utility and grid code practices

Deliverables

✅Vacuum Pumping Service Record

✅Achieved vacuum level and holding time

✅Gas compartment identification details

✅Leak-free and moisture-free confirmation

✅Readiness confirmation for SF₆ gas filling

Key Benefits

✅Removes moisture and residual air completely

✅Prevents partial discharge and insulation failure

✅ Improves long-term reliability of GIS equipment

✅Ensures compliance with manufacturer requirements

✅ Essential for safe and successful SF₆ gas filling

Transportation & Accommodation

For outstation or remote sites, transportation and accommodation shall be arranged by the client or charged separately as per the approved quotation.

Optional Add-On Services

✅SF₆ Gas Purity & Moisture Testing

✅ SF₆ Gas Filling & Refilling

✅ SF₆ Gas Recovery Services

✅ SF₆ Leakage Detection & Repair

✅ Annual SF₆ Maintenance Contract (AMC)

Why Choose EngineerBari™

✅Experienced GIS & SF₆ handling engineers

✅High-capacity vacuum pumping equipment

✅Utility-grade procedures & documentation

✅Suitable for EPC, utility & national grid projects

✅Reliable on-site technical support

✅ Partial payment opportunity.