Electrical Transmission & Distribution Equipment Catalog
Explore AIKey’s five core product divisions engineered for utility power grids, renewable energy step-up, mining infrastructure, and industrial complexes.
Oil-Immersed Power Transformers
S11, S13, S20, S22 and SZ11 On-Load Tap-Changer series. Hermetically sealed corrugated tanks with high-permeability grain-oriented silicon steel cores.
- Capacity: 30 kVA – 31,500 kVA
- Loss Reduction: Up to 50% vs S11 benchmark
- Cooling: ONAN / ONAF, mineral or ester oil
- Climate: Standard -25°C or custom -40°C cold-start
Cast Resin Dry-Type Transformers
SCB10, SCB14, SCB18 and 12/24-pulse traction rectifier transformers. Flame-retardant epoxy resin casting with partial discharge < 5pC.
- Capacity: 50 kVA – 4,000 kVA
- Safety: Self-extinguishing, zero oil leak hazard
- Enclosure: IP20 indoor to IP33 outdoor protected
- Certifications: E2, C2, F1 environmental rating
Solid Insulated Switchgear (SIS 12kV)
SF6-free eco-friendly medium voltage ring main units. Vacuum interrupters embedded in solid epoxy poles with IP67 hermetic protection.
- Voltage: 12 kV / 24 kV | Busbar: 630A – 1250A
- Withstand: 20 kA / 25 kA (4 seconds)
- Zero SF6 Gas: Immune to low-temperature gas liquefaction
- Operating Range: -40°C to +45°C ambient
Prefabricated Box Substations & PV Cabins
European style (YB-12), American pad-mounted (ZGS11), and utility-scale solar inverter-transformer step-up cabins (YZC series).
- Rating: 35kV / Up to 6250 kVA inverter stations
- Enclosure: Thermal-insulated double-layer steel / GRC
- Turnkey: Integrated HV, transformer, LV & telemetry
- Protection: IP54 weather-proof, seismic & desert-proof
Power Reactors & Low-Voltage Switchgear
CKSG iron core detuned series reactors, VFD inverter input/output line reactors (ACL/OCL), and MNS/GGD modular distribution panels.
- Reactance Ratio: 6%, 7%, 14% for 3rd & 5th harmonics
- Inverter Protection: dv/dt surge damping, line smoothing
- LV Switchgear: MNS 3.0 / GGD up to 6300A busbar rating
- Linearity: 1.8x – 2.0x rated current without saturation
Quick Portfolio Specification & Selection Overview
Compare primary voltage classes, capacity ranges, and application niches across our apparatus lineup.
| Product Category | Primary Model Series | Voltage Rating | Capacity / Current | Governing Standards | Core Competitive Edge |
|---|---|---|---|---|---|
| Oil-Immersed Transformers | S11, S13, S20, S22, SZ11 | 10kV – 35kV | 30 – 31,500 kVA | IEC 60076, GOST-R | Hermetically sealed corrugated tank, low-temperature cold oil (-40°C) |
| Dry-Type Transformers | SCB10, SCB14, SCB18 | 10kV – 35kV | 50 – 4,000 kVA | IEC 60076-11 | Partial discharge < 5pC, Class F/H insulation, flame-retardant self-extinguishing |
| Solid Insulated Switchgear | SIS-12, SIS-24 | 12kV, 24kV | 630A – 1250A / 25kA | IEC 62271-200 | 100% SF6-Free, IP67 sealed pole, zero gas liquefaction down to -40°C |
| Prefabricated Box Substations | YB-12, ZGS11, YZC Solar | Up to 35kV | 100 – 6,250 kVA | IEC 62271-202 | Rapid 48h commissioning, IP54 double-skin insulated enclosure |
| Reactors & LV Switchgear | CKSG, ACL, OCL, MNS | 0.4kV – 35kV | Up to 6300A busbar | IEC 60289, IEC 61439 | High linearity ≥ 1.8x In, dv/dt motor protection, detuned harmonic suppression |