To choose an industrial connector, you need to do the following
Plug, socket which needs to be fixed, which needs to move
Judging the use environment
Determine voltage and current parameters
[1] plug and socket
Connect the power supply and the power supply to the two ends of a cable.
At both ends, the plug or socket of the industrial connector is separately installed.
When selected, this is the same as the wall socket at home or the terminal block.
Consider who is mobile and who is fixed.
Look at some specific applications.
[2] Classified by usage environment
The description of the environment is divided according to the IP rating as usual.
[2.1] Quick connect type
In such a place, the environmental conditions are relatively loose, and more emphasis is placed on the convenient connection in the application.
Easy & Safe's quick-connect series, with IP44 protection, protects against liquid and solid interference in most cases.
The product itself is more focused on quick connection: ergonomically designed in terms of plug socket shape, locking, unlocking form, etc., easy connection and reliable connection.
Looking for a section of the industrial connector plug
The wall switch for daily use, the chip plug and the reed socket, are suitable for places with low load current.
Poor contact often leads to potential failure risks such as fever.
The bushing pin structure used in industrial connectors has self-clamping characteristics and is larger than ordinary sockets in terms of contact pressure or contact area.
This structure can effectively reduce the contact resistance and avoid malfunctioning heat.
[2.2] Heavy duty protection type
In more demanding industrial locations: high liquid overflow probability, high air dust density, we need to choose heavy-duty protective products
The Tough&Safe range offers protection up to IP67.
The product itself, often use PBT material, anti-made industrial connector application site introduction.
Introduction to PBT material:
(Information from Baidu Encyclopedia)
PBT Chinese name polybutylene terephthalate, referred to as saturated polyester, is a high crystalline thermoplastic.
advantage:
1. Mechanical properties The tensile strength is similar to the tensile modulus and nylon;
2. The friction coefficient is small and self-lubricating;
3. Low water absorption rate;
4. Excellent electrical properties;
5, good dimensional stability;
6. Excellent chemical resistance and oil resistance.
use:
1. Electronic appliances: no fuse disconnector, electromagnetic switch, return transformer, appliance handle, connector, housing, etc.;
2, the car: door handle, bumper, distribution plate cover, fender, wire shield, rim cover, etc.;
3, industrial parts: OA fan, keyboard, fishing tackle reel, parts, lampshade, etc.
High-quality materials allow the rugged to adapt to harsher and more complex environments.
Sectional view
The Tough&Safe rugged version is equipped with two inner and outer clamps, and the pin screws are all double screws.
Regarding the double screws, one of the internals of our company explained this:
If the chain of the Saint Seiya Glacier is actually a cable, the two pendants are an industrial connector, a socket, and a plug.
The nebula chain is big, and if it doesn't tighten, hey, fly out, isn't it awkward?
....
[3] IEC standard classification
Due to the numerous applications of industrial connectors, the use is also very different. In order to facilitate the selection and standardization, the International Electrotechnical Commission (IEC) has developed a selection "clock diagram".
This clock diagram is mainly designed according to the relative position of the keyway and the grounding pole.
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 turns:
The innermost circle number is 1-12, which is the same as the watch scale.
The letter h in the center, there is a small jiujiu directly below, the small jiujiu corresponds to the keyway on the socket.
The keyway of all industrial connectors is at six o'clock.
All industrial connectors have a grounded jack/pin.
Based on the keyway, the ground pin is at the time of the clock, and there is a corresponding code in the model of this connector.
Grounding, arranged according to pre-divided voltage and frequency regions.
Three circles going out are different pin classifications
Corresponding to the three pin classifications of 2P+E, 3P+E, and 3P+N+E.
Each sector has a different color
Color is related to voltage and frequency.
Look at the real thing
[3.1] Grounding foot protection
There are three types of pins/pins 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 clear identification polarity.
All connector import keyways are at 6 o'clock.
The applied voltage and frequency are different, and the grounding pin position of the connector is also different.
According to different working voltages and frequencies, the grounding feet are arranged at different angles relative to the keyway, which can avoid mixing and inserting in different application situations, and prevent electrical accidents caused by different voltages or frequencies.
Three different connectors as shown below (small jiujiu is the key/keyway, the grounding pin position at the big blue dot)
6-point plug: 4P+E, 380V, 50Hz, China's standard power frequency power supply.
11-point socket: 4P+E, 450V, 60Hz, a wide range of marine power standards, including yachts.
9-point socket: 4P+E, 230V, 50/60Hz, voltage for some special equipment.
(Some countries have multiple grids, such as Japan and the United States.)
All connectors have a grounding leg that is thicker than the other pins.
They cannot be mixed between them.
ä¸ Impossibility of matching different stitches
First, the keyway position is 6 o'clock.
Then, it can be seen that the grounding pin is larger than the other pinholes, and it is impossible to insert the grounding pin into other polarities by mistake.
Again, the different "hours" connectors have different pinhole angles and cannot be completely overlapped, so they cannot be inserted.
[3.2] color
Industrial connector housing, a total of six colors: red, blue, yellow, green, black, white.
Different colors represent different voltages and frequencies.
For example: green for high frequency 500Hz applications and black for high voltage 500~690V applications.
Red and blue are the most common specifications.
↑ Blue - applied to 230V system 2P+E
↑ Red - applied to 400V system 3P+E
↑ Red - applied to three-phase five-wire system 4P+E
[3.3] rated current
The rated current of industrial connectors, generally have these specifications 16A, 32A, 63A, 125A
对比 Comparison of sockets with different currents
Different rated current specifications, different dimensions, the corresponding plug and socket can not match.
After reading this picture, we can professionally chat a string of characters, and understate the help of the office sister to answer questions:
Well, this 416P6W is an industrial connector plug.
4 is the pin configuration of 3P+N+E
16 is rated current 16A
P is the meaning of the plug, indicating the plug (recommended London cavity)
W means that the degree of protection is IP67.
6 En, 6 is a bit complicated, the grounding pole is at 6 o'clock. Now I am a little busy, let's wait for the school, I will tell you the clock diagram in IEC60309-2.
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