Faced with increasingly complex power systems, automatic transfer switches (ATSs) have become critical equipment for ensuring power supply continuity in many businesses. Simply put, an ATS acts like an "intelligent traffic controller" for the power supply system. When the main power source goes out, it automatically switches to the backup power source within a second; when the main power source is restored, it automatically switches back again. This seemingly simple action, however, is crucial to the safety of the entire power supply system.
To provide you with a more intuitive understanding of our products, we have detailed our ATS specifications in a table. As a premium supplier in China, we consistently provide high-quality products and services.
| Parameter | Value |
|---|---|
| Rated Heating Current (A) | 100, 160, 250, 400, 630, 1000, 1250, 1600, 2000, 2500, 3200 |
| Rated Insulation Voltage Ui (V) | 750, 1000 |
| Rated Operating Voltage (Ue) | AC400V |
| Control Power Supply Voltage (V) | DC24V, DC48V, DC110V, AC220V |
| Conversion Time (S) | 0.5, 1, 1.1, 1.2, 1.25, 2.45 |
A normal ATS will emit a crisp "clicking" sound during operation. If you hear a continuous humming, crackling, or no sound at all, be alert.
The indicators on the ATS have fixed meanings: green indicates the main power source is normal, yellow indicates the backup power source is normal, and red indicates a malfunction. If you notice a flashing light or an unusual color, don't assume it's broken. It's likely due to poor internal circuit contact or a sensor problem.
The ATS will get slightly warm when operating, but under normal circumstances, the casing should only be warm to the touch, not hot. If the casing temperature exceeds 60°C, there's definitely a problem—either the load is excessive, exceeding the ATS's rated current, or internal contacts are oxidized, increasing contact resistance and increasing heat.
First, disconnect both the main and backup power supplies. Check the casing for damage, deformation, or damaged indicator lights. Open the casing (make sure to turn off the power!) and inspect the internal wiring for loose terminals, oxidation, or burnt contacts. If the casing temperature exceeds 60°C, there's definitely a problem—either the load is excessive, exceeding the ATS's rated current, or internal contacts are oxidizing, increasing contact resistance and generating excessive heat.
After powering on, press the "Manual Switch" button to switch to the backup power source, then back to the main power source. Experiencing the switching speed: Under normal circumstances, it should complete within 3-5 seconds, with a crisp, smooth sound and no lag. If the switching is slow or there is an unusual noise, there may be a problem with the internal mechanical structure. Discontinue use and contact the manufacturer for repair.
Measure the ATS's exterior temperature. During normal operation, it should be between 30°C and 50°C. If it exceeds 60°C, investigate the cause. For example, is the load too large or the contact poor? Then measure the voltage of the main power supply and the backup power supply to see if the voltage at both ends of the ATS is consistent with the power supply end. If not, there may be a problem with the internal wiring or a voltage sensor failure, which must be dealt with in a timely manner.
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