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The STS static transfer switch is a product specially designed for key equipment requiring uninterrupted power supply, and a contactless electronic switch device designed to realize mutual backup and quick switchover between two AC power supplies. It allows automatic or manual switchover, and the switchover time is S4ms so that continuous power supply to key equipment can be ensured.
The technical characteristics of our company's STS static transfer switch:
◆Adopt full digital control, strong anti-interference ability and fast operation speed.
◆Switching time <5ms, high reliability; automatic and manual switching.
◆Strong overload capacity, can withstand full load boot.
◆With input over-voltage, under-voltage, output over-voltage, under-voltage, over-temperature, overload and other protection functions.
◆The front panel is equipped with a monitoring screen (no under 10KVA), and the status information is clear at a glance.
|Project name||Technical indicators|
|Module rated output power||8KVA|
|switching time||priority switching||≤2Ms|
|Power off switch||＜5Ms|
|AC input||Rated Voltage (VAC)||220|
|Rated frequency (Hz)||50|
|Rated current (A)||32|
|Automatic switching threshold voltage||220Vac±12.5％，return difference ±5V|
|Automatic conversion threshold frequency||50Hz±10％，return difference ±0.2Hz|
|Overrun protection shutdown threshold voltage||≤120Vac Or ≥260Vac，return difference±5V|
|Overrun protection shutdown threshold frequency||≤42.5Hz or ≥57.5Hz，return difference ±0.2Hz|
|overload capacity||Load current <105%, continuous work Load current 105～125% for 10min Load current 125～150% for 1min Load current>150%, 60mS shutdown|
|environmental conditions||Dielectric strength||2KVAC，1min|
|Shipping and Storage Temperature||－40～70℃|
|Altitude (m)||≤3000 1500～3000m 1% output derating for every 100m rise|
|Protective function||Input reverse protection, input under-voltage, over-voltage protection, output overload protection, over-temperature protection|