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Matters needing attention in selection and use of industrial connector
Source: Taixi electric Date: February 22, 2019

To select an industrial connector, you need to do the following:

Which plug or socket needs to be fixed? Which needs to be moved? Determine the use environment / determine the voltage and current parameters.

【1】 Plug and socket

The two ends of a cable are connected to power supply and electrical equipment respectively. Plugs at both ends of the connector or industrial device respectively. It's the same as the plug-in panel in the wall. Consider who is mobile and who is fixed.

Look at some specific application sites.


【2】 Classification by use environment

The description of the environment is classified according to the IP level as usual.

[2.1] quick connect type

This kind of connection is more convenient in the environment.

In most cases, it can protect against interference of liquid and liquid.

The product itself is more focused on fast connection: through the ergonomic design of plug and socket shape, locking, unlocking form and other aspects, it can realize easy connection and reliable connection.

Sectional view of industrial connector plug

Daily use of the wall switch, the use of sheet plug and reed socket, suitable for small load current places.

Poor contact often brings the risk of potential failure such as heating.

The sleeve pin structure used in industrial connector has self clamping characteristics, which is larger than that of ordinary socket in terms of contact pressure and contact area. This structure can effectively reduce contact resistance and avoid fault heating.

[2.2] heavy load protection type

Our products with the highest protection rate of heavy-duty, high-grade and high-density industrial air protection are required

7。

The product itself, often choose PBT material, resistant to manufacturing

Introduction to PBT material:

(data from Baidu Encyclopedia)

The Chinese name of PBT is polybutylene terephthalate, abbreviated as saturated polyester. It is a high crystalline thermoplastic.

advantage:

1. The mechanical properties of diazepam are similar to tensile modulus and nylon;

2. The friction coefficient is small and has self lubrication;

3. The water absorption rate is low;

4. Good electrical properties;

5. Good dimensional stability;

6. The drug resistance and oil resistance are excellent.

Purpose:

1. Electronic appliances: fusionless breaker, electromagnetic switch, galloping transformer, appliance handle, connector, shell, etc;

2. Automobile: door handle, bumper, distributor cover, mudguard, wire cover, rim cover, etc;

3. Industrial parts: OA fan, keyboard, fishing tackle reel, parts, lampshade, etc.

High quality materials enable the rugged model to adapt to more harsh and complex environments.

profile


Tough & safe is equipped with two sets of clamps inside and outside, and the pin screws are all double screws.

About the double screw, a gentleman in our company explained this:

If it's an industrial plug, it's actually a two end connector.

Nebula chain big trick issued, in case of not tightening, click, fly out, is not very embarrassing?

....

【3】 IEC standard classification

Due to the large number of industrial connector applications, the use situation is also very different, in order to facilitate the selection and unified standards, the International Electrotechnical Commission (IEC) developed a "clock diagram" for selection.

This clock diagram is mainly designed according to the relative position of keyway and grounding electrode

IEC 60309-2 "clock diagram",

According to the CEE / IEC standard, only plugs and sockets with the same number of poles, voltage, frequency and rated current can be connected.

The disc is divided into four circles

The inner circle numbers 1-12 are the same as the scale of a watch.

Below the letter H in the center, there is a small one, which corresponds to the keyway on the socket.

Keyways for all industrial connectors are in the six o'clock position.

All industrial connectors have a grounded jack / pin.

There will be a reference pin in the corresponding position of the connector.

Grounding shall be arranged according to the voltage and frequency area divided in advance.

The three turns out are different kinds of stitches

These three kinds of pin classification correspond to 2p + e, 3P + e, 3P + N + e respectively.

Each sector has a different color

Color is related to voltage and frequency.

Look at the real thing

[3.1] prevention of wrong connection

There are three types of pin / pin for industrial connectors.

2P+E:L,N,PE

3P+E:L1,L2,L3,PE

4P+E:L1,L2,L3,N,PE

Each pin has a clearly marked polarity.