Functional Purpose: Utilizes SF6 gas or eco-friendly alternative insulating gases; current ratings range from 1250 A to 3150 A; specifically engineered for primary distribution applications, featuring high safety, reliability, compactness, and maintenance-free operation.
Category NameGas-Insulated Metal-Enclosed SwitchgearClassificationJ10X | RMU Gas-Insulated Ring Main Unit J20X | C-GIS Gas-Insulated Switchgear J30X | GIS Gas-Insulated Switchgear (72.5 kV)
Product FeaturesC-GIS: Box-type, slightly positive-pressure gas-insulated metal-enclosed switchgear; features high safety, reliability, compactness, and maintenance-free operation; widely deployed in primary distribution systems, substations, and rail transit power supply systems; extensively applied in 12–40.5 kV primary step-up/step-down transformers and rail transit substations.Technical SpecificationsRated Voltage: GMU-12 — 12 kV; GMU-40.5 — 40.5 kV;
Rated Frequency: 50 Hz, 60 Hz;
Power-Frequency Withstand Voltage (phase-to-phase, phase-to-ground / across open contacts): GMU-12 — 42 / 48 kV; GMU-40.5 — 95 / 118 kV;
Lightning Impulse Withstand Voltage (phase-to-phase, phase-to-ground / across open contacts): GMU-12 — 75 / 85 kV; GMU-40.5 — 185 / 215 kV;
Rated Current: GMU-12 — 1250 A, 3150 A; GMU-40.5 — 1250 A, 2500 A, 3150 A;
Rated Short-Time Withstand Current (current / time): 31.5 / 4 kA·s, 40 / 4 kA·s;
Insulating Medium: SF6 / dry air;
Annual Average Leakage Rate: ≤ 0.01%;
IAC Rating: AFLR / 1 s;
SF6 Gas Compartment Ingress Protection Rating: IP67;
Front Panel Ingress Protection Rating: IP3X;
Rated Filling Pressure (at 20 °C): 0.03 MPa
BrandJST
Product details
Application Scenarios: Designed for PLN distribution networks in Indonesia, industrial parks, mining sites, photovoltaic step-up substations, switchgear rooms, and island microgrids.
Product Configuration: P-289; GIS model; current ratings: 1250 A, 3150 A; voltage ratings: 40.5 kV, 12 kV; frequency: 60 Hz; insulation levels: 48 kV, 118 kV.
Indonesia-Specific Adaptation: Compact substation configurations support either ring-main or gas/solid-insulated solutions; for coastal and high-humidity regions, condensation resistance, creepage distance, corrosion protection, and cable termination interface compatibility must be verified.
Requirement Confirmation
Verify application scenario, rated parameters, quantity, and drawings.
Factory Matching
Review supplier production capacity, certifications, and manufacturing schedule.
Order Transaction
Confirm commercial terms, contract, and documentation checklist.
Shipment Control
Track packaging, inspection records, and logistics status.
