Fortune telling red button _ How to deal with the red symbol given by fortune telling

What's the little red button on the bull socket for?

The red button is the super power protection button.

The standard maximum power of the socket is 2500W, and the pressed state is in normal use. When the electrical power used on the power strip exceeds the rated power of the power strip of 2500W, this red button will automatically pop up, and then automatically turn off the power supply to ensure that there will be no fire and other accidents due to excessive power.

If you press the red button again when the electricity consumption of electrical appliances is reduced, that is, below 2500W, then the patch panel can continue to be used normally.

When too many high-power devices are inserted into the line, tripping will be found. In another case, when the cross section of the conductor is not selected properly, this trip will also occur. The third case is a short circuit inside the patch panel.

This super power protection button is also called overload protector. Overload is actually an excessive power load, which exceeds the rated load of the patch panel itself. The case of automatic tripping is also aimed at the damage of working conductor. This red button can't be removed in order to prevent burning out equipment or circuits.

Extended data:

Introduction of overload protection cycle function

1, overcurrent protection

Fixed time limit: when the load is overcurrent and the continuous overcurrent time reaches the set value of overcurrent time, the overload protector will automatically trip and reset after 5 minutes.

After tripping, the overload protector displays the current value of the maximum phase. The adjustment range of overcurrent time is 0.2~30S, the repeatability error of overcurrent time is 5 [%], and the specification error of overcurrent time is 10 [%].

Inverse time limit: when the load is overcurrent and the duration reaches the time specified in a curve of 1 ~ 4 selected by the tripping level and the ratio of load current to current setting value, the overload protector will trip automatically and reset after 5 minutes. After tripping, the overload protector displays the current value of the maximum phase.

2, short circuit protection

When the ratio of load current to current setting value exceeds a certain value, it can be regarded as short circuit, and the overload protector trips within 0.5S This value is called instantaneous multiple, and the adjustment range of instantaneous multiple is:

Winding motor: 2 ~ 4.5 times.

Squirrel cage motor: 2 ~ 9 times.

Other electromechanical equipment: refer to the above two options.

After the overload protector trips, the digital tube displays "short" and the instantaneous multi-indicator light is on.

3, lack of phase protection

When the current of any one of the three phases is less than one third of the minimum current setting value and the duration reaches a certain time value, the overload protector will trip automatically, which is the phase-missing time. When tripping, the digital tube displays "phase".

4, phase imbalance protection

When the three-phase current imbalance reaches 50[%] and the duration reaches a certain time value, the overload protector will trip automatically, which is the phase imbalance time. When tripping, the digital tube displays the current value of the maximum phase.

5, wrong phase protection

The phase sequence of the three-phase power supply is opposite to the original phase sequence, and the overload protector trips automatically within 0.2 seconds. When tripping, the digital tube displays the phase error symbol "PR".

Baidu encyclopedia-overload protector