Classification and Material Composition of Terminal Blocks
- PRODUCT DETAIL
Features of optical isolation terminal
The existing rail-type terminal block and frame-type screw connection technology is used, and a circuit composed of electronic components is added to realize the transmission coupling of the photoelectric process.
The core of automatic control is that the control unit must be reliably isolated from the sensors and actuators to avoid interference. WUKG2 optical isolation terminal can accomplish this function well and ensure that the field signal matches the low voltage required by the electronic control device. It can also be used as the interface component between process control peripheral equipment and control, signal and regulator device, and is suitable for different voltage and power ranges.
The optical isolation terminal has the advantages of low control end signal loss, high switching frequency, no mechanical contact jitter, no wear switching, high insulation voltage, no fear of vibration, no positional influence, and long life. Therefore, it is widely used in the field of automatic control.
Terminal identification standard
This standard is equivalent to adopting the international standard IEC455 (1988) "General Rules for the Identification and Application of Alphanumeric System of Equipment Terminals and Specific Wire Ends."
Scope of terminal application
This standard specifies various methods for identifying electrical equipment (hereinafter referred to as equipment) terminals, and formulates general rules for identifying equipment terminals and specific wire ends with an alphanumeric system.
This standard applies to equipment (such as resistors, fuses, relays, contactors, transformers, rotating electrical machines, etc.) and the identification markings of the terminals of the combination of these equipment, as well as the identification of specific wire ends.
When necessary, the detailed application of these general rules to certain products and the necessary auxiliary identification methods can be given in the relevant standards.
Terminal reference standard
GB 4728 Graphical symbols for electrical diagrams
GB 5465 Graphical symbols for electrical equipment