Key Benefits
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Ultimate Safety
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Live components locked in stainless-steel, SF₆-pressurized chambers
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IP67-rated enclosure ensures dust- and flood-proof operation
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Zero exposure to arc flashes or accidental contact
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Long-Term Reliability
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Over 30 years of service life under GB/DL standards
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Zero SF₆ leakage, eco-friendly insulation
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Type-tested at China’s National HV Test Center
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Space & Time Savings
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Compact footprint with expandable busbar system
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Rapid on-site installation (< 4 hours via modular assembly)
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Minimal civil works: ideal for tight urban sites
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Smart Grid Ready
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Supports IEC 61850 communication protocols
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Optional metering (M) and voltage transformer (PT) cabinets
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Seamless SCADA/IoT integration
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Product Parameters
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Item
|
Parameter
|
|
Arc extinguishing type
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Vacuum
|
|
Rated Voltage
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12kV
|
|
Rated Frequency
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50Hz
|
|
Rated current
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630A
|
|
Temperature rise test
|
1.1lr
|
|
Rated frequency 1min withstand voltage
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Phase-to-phase and phase-to-ground outlets 42kA, 48kA
|
|
Rated lightning impulse withstand voltage peak (1.2/50us)
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Phase-to-phase and phase-to-ground disconnect 75kV, 85kV
|
|
Auxiliary and control circuit short-time frequency withstand voltage
|
2kV
|
|
Rated short-circuit breaking current
|
25kA
|
|
Rated short-circuit breaking current / duration
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Main circuit, earth switch earth circuit 25/4kA/s, 21.7/2kA/s
|
|
Rated peak withstand current
|
63KA
|
|
Rated short-circuit closing current
|
63KA
|
|
Rated active load current
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630A
|
|
Partial discharge (measured value at 1…2Ur)
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≤ 20pC
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Core Technology: Sealed Modular Architecture
Unlike traditional air-insulated switchgear, the SRM6-12 encapsulates all live parts and switching mechanisms in stainless-steel GIS compartments filled with SF₆. This approach:
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Eliminates contamination risks—dust, moisture and corrosion have no path to live parts.
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Ensures consistent performance—sealed chamber maintains dielectric integrity.
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Reduces maintenance—no periodic cleaning or live-line servicing required.
Model Configuration Guide
Example: SRM6-12-CF/630IR
- SRM6-12: GIS ring main unit, 12 kV standard (24 kV optional)
- CF: Load Switch (C) + Fuse Combo (F)
- 630: Rated current (A)
- I: Left-side expansion
- R: Right-side cable entry
Cabinet Options:
- C: Load Switch
- F: Fuse Combo
- V: Vacuum Circuit Breaker
- SV/SL: Busbar Segmentation
- M: Metering
- PT: Voltage Transformer
Expansion & Entry:
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I / D / ID: Left, Right or Both-sides expansion
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L / R / LR: Left, Right or Dual-side cable entries
How to Choose Your SRM6-12
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Voltage Level
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12 kV: Standard urban grids
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24 kV: Heavy-duty industrial parks
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Current Rating
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630 A: Commercial/residential networks
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1250 A: Large industrial loads
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Footprint & Layout
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Compact sites: Front-entry (no suffix)
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Scalable networks: Bidirectional expansion (ID)
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Automation Needs
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IEC 61850: Add M/PT cabinets for real-time data
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Remote control: Integrate with existing SCADA
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FAQ
Q1: Why choose gas-insulated switchgear over air-insulated units?
A: GIS chambers eliminate arc-flash hazards, block contaminants and require no live-line maintenance—critical for densely packed substations.
Q2: Can SRM6-12 panels connect to my SCADA system?
A: Absolutely. All units are IEC 61850-compliant. Simply specify M (Metering) or PT (Voltage Transformer) modules for seamless integration.
Q3: What are typical delivery times?
A: Standard configurations ship within 15 days. Custom, multi-cabinet assemblies take up to 25 days due to in-factory busbar testing.
Why Partner with ZHENGXI?
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OEM Manufacturer: Direct factory pricing, no intermediaries
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Certified Quality: GB/DL/T404 type-test approval
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Comprehensive Support: 25-year technical assistance & spare parts
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Tailored Solutions: Custom cabinet fusion per site layouts
🔧 Experience Next-Level Distribution Resilience
Contact our ZHENGXI engineers today for a tailored SRM6-12 proposal and discover why our gas-insulated switchgear sets the industry standard.
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