Shulou(Shulou.com)05/31 Report--

Hello everyone, Lin Fei to answer the above questions for you, empty, empty many people do not know, now let's take a look!

Air switch, also known as air switch, is a kind of circuit breaker. It is a switch that turns off automatically as long as the current in the circuit exceeds the rated current. Air switch is a very important electrical appliance in low-voltage distribution network and electric traction system, which integrates control and multiple protection functions. Air switch is indispensable in family life, and its specifications are various. Next, let's see what they are.

1. Common models of air switches in homes

At present, DZ series air switches are used in homes. The common air switches are as follows:

C16, C25, C32, C40, C60, C80, C100, C120 and other specifications, where C represents the trip current, that is, the trip current. For example, C32 represents the tripping current of 32 A, C32 is generally used to install 6500W water heaters, and C40 is used to install 7500W and 8500W water heaters.

Second, the common industrial models are:

The DW and DZ types of power supply circuits are 20,32,50,63,80,100,125,160,250,400,600,800,1000. (unit A)

three. Example:

Empty, there is a wide variety of products, but the model is roughly the same. This is understandable, but different names of different companies lead to different names of the same product. But the bidding method is still the same. Taking Huazhou Kongkai products as an example, this paper introduces the models and specifications of Kongkai.

Example:

1. HZM6-63C32/1

Among them, HZ-an enterprise code (Huazhou), M6-a product model, 63-11 shell grade, C-a lighting circuit (or general circuit) use category 3360, 32-11 rated current, 1-1p (1 pole), empty open hzw 66-400pm 3, HZ "- 400"-rated current (A); "/ 3"-3 poles.

two。 Polarity and representation of air switches (circuit breakers)

Unipolar 220V hot wire cut off (small circuit breaker); bipolar 220V hot wire and zero wire cut off at the same time (DPN zero hot wire double in and double out circuit breaker); three-stage 380V three-phase line all cut off; four-stage 380V three-phase fire line and one-phase zero line are all cut off. The lighting circuit generally chooses 10-16A micro-break. Socket circuit generally choose 16-20A micro-break leakage. The air conditioning circuit generally chooses 16-25A micro-break. In general, the main switch of household distribution box is 2P/32A-2P/63A microswitch or isolation switch.

After introducing the specifications and models of the air switch, Benshaw briefly described the tripping of the air switch that people often encounter. When we encounter tripping, we should first judge whether the tripped air switch is the master switch in the home distribution box or the branch outlet switch. If the main switch does not trip, only the tap switch tripped, indicating that there is something wrong with the power supply line of high-power appliances, that is, multiple high-power appliances are connected to the same tap switch. In this case, the circuit of the high-power appliance is adjusted to a tap switch with light load (a separate tap switch is recommended for the high-power appliance); if the tap switch is not tripped and the main switch is tripped, calculate whether the sum of the power of household appliances exceeds the approved power supply capacity, and check whether the total switch capacity matches the approved power supply capacity.

At the end of this article, I hope it will be helpful to you.

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