High And Low Voltage Series

KYN28A-12 Indoor AC high voltage metal shift switchgear

Type KYN28A-12 indoor AC high voltage metal shift switchgear is a complete set of indoor power distribution device with three-phase AC 50Hz, rated voltage of 12kV and working current to 4000A. It is suitable for power plants, substations, industrial and mining enterprises to accept and distribute electric energy, control, protection and monitoring of circuits, and can be used in frequent operation places.

How We Guarantee Quality

Insulation Performance Testing
- Insulation resistance ≥ 10000 megohms (compliant with national (international) standards)
- Power frequency withstand voltage test passed, no breakdown or flashover
- Partial discharge < 5pC, ensuring long-term operational safety
Electrical Performance Verification
- Rated current ranges from 100A to 7500A, meeting various application scenarios.
- Short-circuit withstand current up to 80kA/1s.
- Short-circuit withstand current up to 80kA/1s.
- Protection level up to IP31 (indoor) / IP54 (outdoor).
- Complete five-proof interlocking function to prevent misoperation.
Temperature Rise and Load Test
- Continuous operation under full load for 8 hours, cabinet temperature rise ≤ 40K;
- Current balance in each circuit, circuit resistance < 80μΩ, no overheating at conductor connections;
- Current balance in each circuit, circuit resistance < 80μΩ, no overheating at conductor connections;
Comprehensive pre-shipment testing
- Each cabinet undergoes a power-on simulation test.
- Secondary circuit verification ensures accurate protection actions.
- A complete test report is provided, which is traceable and verifiable.

Get Started

We make it easy to get a quote and order a transformer. Follow the steps below to get started.

01
Request a Quote
Call or fill out the form below to get a quote. Most quotes are turned around the same or next-day.
02
Place your order
Send us a purchase order, or give us a credit card number, and your dedicated customer service rep will send you an order confirmation and answer any questions you may have.
03
Receive your transformer
We’ll handle all transportation and logistics. Ningyi has the shortest lead times in the industry so you can get the power on when you need it.

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