Product introduction
The Aierway KYN28-12 is a state-of-the-art, armored, removable, AC metal-enclosed switchgear designed for indoor installation in medium-voltage power distribution and control systems. As a core component in secondary distribution networks, it is engineered for exceptional reliability, operational safety, and ease of maintenance, with a primary voltage rating of 12 kV.
Key Features
1.Advanced Metal-Enclosed, Compartmentalized Design:
-Constructed with robust, fully enclosed sheet metal panels, providing enhanced protection against environmental dust, moisture, and physical impact.
-Strict segregation of functional compartments (busbar, circuit breaker, cable, low-voltage control) ensures safety, prevents fault propagation, and enhances personnel protection.
2.Innovative Removable (Draw-Out) Mechanism:
-The heart of the system is the fully removable, truck-mounted vacuum circuit breaker. It features three distinct positions: Service (Connected), Test, and Disconnected/Isolated.
-This design allows for safe and swift isolation, routine testing, maintenance, or replacement of the breaker without powering down the entire switchgear lineup, minimizing system downtime.
3.Flexibility and Integration:
-Available in various standard configurations to function as incoming, outgoing, bus tie, transformer feeder, or motor control units. Easily integrates with modern digital protection relays, microprocessor-based controllers, metering devices, and communication modules (e.g., for SCADA, IoT) for smart grid and industrial automation applications.
Technical data table
| No. | Item | Unit | Parameter |
|---|---|---|---|
| 1 | Rated Voltage | kV | 12 |
|
2 |
Rated Insulation Level | – | |
| Power Frequency Withstand Voltage | KV | Phase-to-phase and phase-to-earth: 42; Isolation gap: 48 (kV) | |
| Lightning Impulse Withstand Voltage | KV | Phase-to-phase and phase-to-earth: 75; Isolation gap: 85 (kV) | |
| 3 | Rated Frequency | Hz | 50 |
| 4 | Circuit Breaker Rated Current | A | 630，1250，1600，2000，2500，3150，4000 |
| 5 | Switchgear Rated Current | A | 630，1250，1600，2000，2500，3150，4000 |
| 6 | Rated Short-Circuit Breaking Current | kA | 20，25，31.5，40 |
| 7 | Main Circuit Rated Short-Time Withstand Current | kA/4s | 20，25，31.5，40 |
| 8 | Protection Class (IP Rating) | – | IP4X |
Outline and dimensions of installation
