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Voita Electronic
Voita Electronic
The static transformer switch (STS) is an advanced AC switch equipped with two independent inputs. In standard operation, one AC input remains active to provide consistent power to the load while the second input stays in standby mode. Should the primary power supply become abnormal, the STS utilizes high-speed switching technology to automatically transfer the load to the secondary power supply, ensuring uninterrupted equipment operation and maximum reliability.
The STS dual power switching device leverages high-speed static contactless switching principles:
| Category & Parameter | Specifications | |
|---|---|---|
| Switch Over | Switching Time | ≤4ms |
| Method | High-speed Static Contactless | |
| AC Input / Power | Rated Voltage | 220VAC |
| Rated Voltage Range | 190 ～ 260VAC | |
| Rated Frequency | 50HZ | |
| Power Factor | 1 | |
| Auto-Switch Threshold Voltage | Under-voltage: 190Vac ± 5Vac | Over-voltage: 260Vac ± 5Vac | |
| Auto-Switch Threshold Freq. | 50HZ ± 10%, backlash ± 2HZ | |
| Overload Capacity | Load ≤ 110%: Continuous | Load > 110%: Shutdown in 60ms | |
| Comm. | Communication Interface | RS485 |
| Environment | Dielectric Strength | 2KVAC, 1min |
| Noise (at 1m) | ≤55dB | |
| Operating Temperature | -25 ～ 50℃ | |
| Altitude | ≤3000m (Derating of 1% per 100m above 2000m) | |
| Protection | Input under/over voltage, Output overload, Over temperature, Short circuit protection | |
