· Safe and reliable
· Meets outdoor industrial and mining requirements, and adapts to both marine and land environmental conditions.
· Comprehensive solutions with flexible combinations
· On-site installation—no disassembly, no inflation, and no maintenance required.
· For outdoor or indoor use;
· Altitude: ≤5000 m (If the operating altitude of the equipment exceeds 2000 m, this must be specifically noted);
· Ambient temperature: Maximum temperature +65℃, minimum temperature -40℃, average value within 48 hours ≤35℃;
· Environmental humidity: Suitable for all humid environments;
· Pollution degree: Level 4 pollution;
· Corrosion resistance class: Offshore C4H;
· Seismic resistance level: AG5 (horizontal acceleration 0.3g, vertical acceleration 0.15g);
· Electromagnetic interference: The amplitude of electromagnetic interference induced in the secondary system ≤ 1.6 kV;
· Installation environment: There should be no explosive or corrosive gases in the surrounding air, and the installation location should be free from frequent, severe vibrations or impacts.
· Note: If the operating environment conditions exceed those specified above, please consult with the company to arrange custom solutions.
· GB/T 7674-2020 Gas-insulated metal-enclosed switchgear with rated voltage of 72.5 kV and above
· IEC62271-203:2011 Gas-insulated metal-enclosed switchgear for rated voltages above 52 kV
· IEC60694-2002 Common Technical Requirements for High-Voltage Switchgear and Control Equipment
· GB/T3906-2020 and IEC 62271-200:2011—3.6 kV to 40.5 kV AC metal-enclosed switchgear and control equipment
· Common technical requirements shared by GB/T 11022-2020 and IEC 62271-1:2017—Standard for High-Voltage Switchgear and Control Equipment
· GB/T1984-2014 and IEC 62271-100:2017 AC High-Voltage Circuit Breakers
· GB/T4208-2017 and IEC60529 Enclosure Protection Ratings (IP Codes)
· GB/T16927.1～2-2013 High-Voltage Test Techniques
· GB/T3309-1989 Mechanical Tests for High-Voltage Switchgear at Ambient Temperature
· GB/T 4473-2018 Synthetic Testing of High-Voltage AC Circuit Breakers
· GB/T5582-1993 Pollution Severity Levels for External Insulation of High-Voltage Power Equipment
· GB/T11023-2018 Test Method for Gas Sealing of Sulfur Hexafluoride in High-Voltage Switchgear
· DL/T402-2017 Technical Specifications for Ordering High-Voltage AC Circuit Breakers
· DL/T486-2021 Technical Specifications for Ordering High-Voltage AC Disconnect Switches and Earthing Switches
· DL/T403-2017 Technical Specifications for Ordering 12kV~40.5kV High-Voltage Vacuum Circuit Breakers
· DL/T404-2018 3.6kV～40.5kV AC Metal-Enclosed Switchgear and Control Equipment
· DL/T593-2016 Common Technical Requirements for High-Voltage Switchgear and Control Equipment Standards
|
Name |
Unit |
Switchgear and Circuit Breaker Parameters |
|
|
Rated voltage |
kV |
72.5 |
|
|
Rated frequency |
Hertz |
50 |
|
|
Rated current |
A |
630/1250 |
|
|
Rated insulation level |
Power-frequency withstand voltage (phase-to-phase, phase-to-ground, vacuum interrupter) |
kV |
160 |
|
Power-frequency withstand voltage (isolated break) |
kV |
160+42 |
|
|
Power-frequency withstand voltage (auxiliary and control circuits) |
kV |
2 |
|
|
Lightning impulse withstand voltage (phase-to-phase, phase-to-ground, vacuum interrupter) |
kV |
380 |
|
|
Lightning Impulse Withstand Voltage (Isolation Break) |
kV |
350 + 60 |
|
|
Rated short-circuit breaking current |
kA |
31.5 |
|
|
Rated short-circuit breaking operations |
Next |
30 |
|
|
Rated short-circuit making current (main switch/fault-making earthing switch) |
kA |
80/80 |
|
|
Short-time withstand current and duration (main circuit + earthing switch, earthing connection) |
kA/s |
31.5/4, 27.5/2 |
|
|
Rated peak withstand current (main circuit + earthing switch, earthing connection) |
kA |
80, 69.6 |
|
|
Circuit breaker mechanical life |
Next |
10000 |
|
|
SF6 rated pressure |
Rated inflation pressure (gauge pressure at 20℃) |
MPa |
0.12 |
|
Minimum inflation pressure (gauge pressure at 20℃) |
MPa |
0.08 |
|
|
Protection rating |
—Electrical box with power supply |
|
IP67 |
|
Cabinet body, cable compartment, cover plate |
|
IP5X |
|
|
Annual relative leakage rate of gas |
%/year |
≤0.01 |
|
|
Mechanical Operation Sequence |
|
0-0.3s-CO-180s-CO |
|
|
Expected service life |
Year |
40 |
|
|
Busbar/Grounding busbar (copper bar) |
|
240mm2 |
|
|
Institutional and Secondary Operating Voltage |
|
Spring mechanism AC/DC 220 |
|
|
Name |
Unit |
Isolating switch |
|
|
Structural type |
|
Direct-acting |
|
|
Rated voltage |
kV |
72.5 |
|
|
Rated frequency |
Hertz |
50 |
|
|
Rated current |
A |
630/1250 |
|
|
Rated insulation level |
Power-frequency withstand voltage (phase-to-phase, phase-to-ground) |
kV |
160 |
|
Power-frequency withstand voltage (isolated break) |
kV |
160+42 |
|
|
Lightning impulse withstand voltage (phase-to-phase, phase-to-ground) |
kV |
380 |
|
|
Lightning Impulse Withstand Voltage (Isolation Break) |
kV |
350 + 60 |
|
|
Short-time withstand current and duration (main circuit + earthing switch, earthing connection) |
kA/s |
31.5/4, 27.5/2 |
|
|
Rated peak withstand current (main circuit + earthing switch, earthing connection) |
kA |
80, 69.6 |
|
|
Mechanical life |
Next |
3000 |
|
|
Expected service life |
Year |
40 |
|
|
Busbar/Ground Busbar (Copper Bar) |
|
240mm2 |
|
|
Secondary operating voltage |
|
AC/DC220 |
|
|
Name |
Unit |
Grounding switch |
|
|
Short-time withstand current and duration (main circuit + earthing switch, earthing connection) |
kA/s |
31.5/2 |
|
|
Rated peak withstand current (main circuit + earthing switch, earthing connection) |
kA |
80, 69.6 |
|
|
Mechanical life |
Next |
3000 |
|
|
Expected service life |
Year |
40 |
|
|
Secondary operating voltage |
|
AC/DC220 |
|
