Guide: low-pressure switches for certain multi-purpose products with some success in various sectors of petrochemical textiles play a key role in electricity input, distribution and conversion. Low pressure switch cabinets are defined as one or more low pressure switch devices and a control, protective, regulatory device that has some connection to them. The connection between its internal electrical and external machinery needs to be completed by the manufacturer, which can be described as a combination, as it also requires some structural components to be combined and assembled. Now let's find out how it works。
I. Conditions for use
1. The ambient temperature should be between 5°c and +40°c and the average temperature of the day should not be greater than +35°c
2. The air is kept clean and its humidity is controlled at the same time as the temperature is controlled. At high temperatures, it cannot be more than 50% wet, and at low temperatures, the requirements for humidity are less high。
3. The selection of the installation site is conditioned on the level of contamination and altitude, which cannot be higher than 2,000 metres。
Ii. Rationale
Breakers in high-pressure switches can cause breakers to split and close gates, when the breakers operate without the entry of source contacts, the breakers close their regular working contacts, the breakers glow their red simulators when the breakers operate, and the breakers close their contact points that are often closed, when the green simulators do so. The work position of the breaker shows the closing of the current contact, and the breaker is in working position if the contact is closed。
Iii. Characteristics
Reasonable design: it is designed as a unitization that combines some of the characteristics of electrical switches such as escape points, graphics, etc
Design。
2. Generic structure: its configuration is flexible: its unique model c is structured in a way that is consistent with the general pattern。
3. Standardized modules: it has made standardized changes to protect modules, operating modules, conversion modules, control modules, etc
A piece of structure is optional。
4. Safety of protection: the necessary isolation between the various areas and the segregation of some functional units when they operate and operate, in both cases using highly safe protective functions。
5. Technical parameters: technical parameters for low-pressure switches are now in the international lead。
Classification
(1) fixed:
Meets the electrical components reliably fixed to the position identified in the cabinet. The outer shape of the cabinet is typically a cube, such as a screen, box, etc., and there is also a prism such as a desktop. These cabinets are separate and arranged。
In order to ensure the size of the cabinet, a step-by-step combination of components is often used, usually consisting of two pieces or both of the right or the right side, followed by a cabinet, or an external requirement, followed by an interlocking of the inner parts of the cabinet. The precise length of the parts on each side of the composition cabinet must be correct (public differential negatives) in order to guarantee the geometric dimensions of the various aspects, thus ensuring the overall appearance requirements. For both sides of the cabinet, there can be no rises in the middle due to the need for ranking。
In order to adjust easily to offset the accumulation of public differentials, the container width is negative. When the combination of the components of the cabinet is completed, it shall also be reformed as necessary to meet the dimensions of the parts. For the manufacture of a rigid or large batch of cabinets, due consideration should be given to the use of a work kit to ensure the correct uniformity of the structure, the baseline surface of the packaging is set to the bottom, and the positioning blocks in the package are set in accordance with the ease of removal from the work, and uniform adjustments are generally made at the time of installation, for example, because of the vulnerability of the outer doors of the cabinet to transport and installation。
2) expulsion:
The extraction form consists of a fixed cabinet and a removable component of the main electrical component, such as a switch, which is easily transposable, is reliable when moved in, and is reliably interchangeable in drawers of the same type and specification, and in which the partial processing of the cabinet is essentially similar to that of a fixed cabinet. However, due to interchange requirements, the accuracy of the cabinet must be increased and the relevant parts of the structure adjusted to a sufficient level, and for the removable parts of the device to be capable of being transposed and reliably equipped with the main components, there is a need for greater mechanical strength and precision, as well as sufficient adjustments for the relevant parts。
The process of manufacturing drawer-based low-pressure cabinets is characterized by: (i) a uniform reference frame for fixed and removable parts; (ii) the relevant parts have to be adjusted to their optimal location and to apply a special standard working suit, including standard cabinets and standard drawers, when adjusting; (iii) error in critical sizes cannot be excessive; and (iv) the exchange of drawers of the same type and specification is reliable。
