The symbol of leakage relay is large. Come in and have a look.

Life is our most precious wealth. At ordinary times, we can see the slogan everywhere. The water is deep here. No swimming! High-voltage lines are dangerous, please stay away! Such a slogan, conspicuously posted on the wall, tells us to pay attention to safety at all times, and the safety of electricity is also what we usually pay attention to in our daily life! What common sense do you know? So today, Xiaobian brought you some basic symbols of leakage relay. I hope you can learn them and maybe help you a lot when necessary!

one, DZ1? -1/33? Ie=6A? Description:

dz-the reverse pinyin of "automatic"

1-the design serial number

1- is its shell frame grade

3-indicating the number of poles, namely three-phase

3-release form (-no release, 1-thermal release. Rated current.

Key points:

1. Rated voltage of air switch is greater than or equal to rated voltage of line

2. Rated current of air switch and rated current of overcurrent release are greater than or equal to calculated load current of line

Example: DZ47-6A? C25:

DZ47-series miniature circuit breakers (there are many series, which are basically named by manufacturers)

LE-with leakage tripping function

6-frame grade of 6a

C-instantaneous tripping overcurrent multiples are classified according to categories, such as 5 ~. What's the difference between type D and type C?

questioner:? yongtaolee? -? There is definitely no such switch as 1In. It may be an extra , which should be 1In. 1In, 5In. This is the representation method of short-circuit protection action value of circuit breaker. Assuming that the rated current of a circuit breaker is 1A, 5 inches means that the short-circuit protection value of this circuit breaker is 5A A. According to the national standard, there is an error of plus or minus 2%. When the current in the circuit is less than or equal to 4A, the circuit breaker must ensure that it does not act, and when the current is greater than or equal to 6A, the circuit breaker must act. ? (especially short-circuit protection, when it is less than 4A, as long as the overload reaches a certain time, thermal protection will also make the circuit breaker act.)

D-type C-type is the expression method of short-circuit protection action value of miniature circuit breaker.

type c? Five to ten times? Generally used for general power distribution.

type d? 1-14 times, used to start electrical appliances with large current (such as motors).

and type B? 3-5 times

3, FAM2-1L/43? -1A? (.3A,.4S) What does the model of this circuit breaker mean? How to choose the model?

what does FAP-125a/3 mean, how to choose the model and what is the basis?

supplementary question:

Then how can we know whether the electrical equipment can be protected, whether it can meet the normal operation, whether it can protect the circuit and whether it can reliably break the circuit in case of failure? How can we determine this?

fam2-manufacturer's named model+serial number, product of Shenyang Jinzhong hongte electric appliance co., ltd., molded case circuit breaker

1l-1a case frame (molded case circuit breaker), where l means p>43----4 with leakage tripping function

means 4 poles, and 3 refers to the type of tripping device. Leakage action current is .3a

.4s-leakage trip action time is .4s

FAP-product of Shenyang Jinzhong Hongte Electric Appliance Co., Ltd., disconnector in miniature circuit breaker category

125a/3-125a, 3-pole

Selection principle of circuit breaker:

1. Meet the requirements of normal operation

2, protect the circuit

3, and reliably break the circuit in case of failure (the disconnector does not have this function)

The above are the basic symbols of earth leakage relay. I hope you can remember that when using electricity, you should pay special attention to safety to prevent unnecessary troubles and accidents. Only by studying more can we enrich ourselves better. In life, we should also study everywhere at any time. This is the main content to be introduced today, the symbol of leakage relay, you should be careful when using electricity, and the life price is the highest! I hope I can bring you some help!

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