MNS

Product details：

Normal conditions of use
1. The ambient air temperature is not higher than +40 degrees, not less than -5 degrees, and the average temperature within 24 hours is not higher than +35 degrees. When it exceeds, it must be operated in accordance with actual conditions.
2. The altitude does not exceed 2000m;
3. The relative temperature of the surrounding air does not exceed 50 % at a maximum temperature of +40 degrees, and a larger relative temperature is allowed at a lower temperature;
4. The mounting and vertical tilt of the Switchgear does not exceed 5 degrees.
Main technical parameters
Rated insulation voltage 660V, 1000V
Horizontal busbar rated short time tolerance current(1S) 50KA-80KA
Rated operating voltage main circuit AC 380V, 660V
Horizontal bus rated peak tolerance current 105KA-176KA
Auxiliary circuits 220V, 380V
Vertical busbar rated short time tolerance current(1S) 50KA
Rated frequency 50HZ, 60HZ
Vertical busbar rated peak tolerance current 105KA
Horizontal bus rated current 4000A
Shell Protection Level IP40
Vertical busbar rated current 1000A
Special use environment up to IP50
Structural characteristics
1. Overview
The product design fully takes into account the requirements of the vast number of power users and design departments, and can meet the needs of the continuously developing power industry for capacity enhancement, computer interface, power centralized control, convenient installation and maintenance, shortened accident handling time, safety, economy, rationality, and reliability. The product has strong ability to connect, high segmental ability, good thermal and thermal stability, flexible electrical scheme, convenient combination, strong series and practicality, novel structure, high protection level characteristics, is the high-grade product of low-voltage pull type switch complete set of equipment.
2. Basic structure
The basic structure of the cabinet is a combination structure suitable for the company. The C profile(basic modulus E = 25mm) is used as the main structure, and the locking self-tapping screw and the 8.8 high-strength bolt are used to tighten it. Therefore, the cabinet body has high accuracy and rigidity. Good grounding continuity.
Transport and installation
1. Transport of products
Transportation unit: The product is divided into four types of transportation units: single station, two sets, three sets, and four sets. However, the total length must not exceed 3M.
The lifting(loading) of the product: The lifting of the product during the lifting and installation process must be hung by the hollow line in Figure 11. The top angle of the wire rope must not be greater than 120 degrees. The lifting should be stable and avoid strong vibration. Shake and impact.
2. Installation of Products
The combination of switches
Basic treatment: The width of the cable groove is selected by the user and the width is pre-buried and flattened with 10 # groove steel as shown in Figure 1.
Installation: the Switchgear is in place. Locating, welding, welding cabinets and welding lengths are determined by the user, the relative position of the product installation and distribution room is referenced, and the installation of the cable in the base is determined by the user. The manufacturer provides the principle that when the length of the bus bridge is greater than 3 meters, suspension cables should be considered. However, when the current of the bus bridge is greater than or equal to 2500A, a sling should also be installed when its length is 2.5.
Use and maintenance
1. After the Switchgear is installed, it must be inspected and tested according to relevant regulations before it can be put into use.
2. Use of switch cabinets
For the use of the remaining functional units, please refer to the information provided by the major electrical component manufacturers.
3. Maintenance of switchgear
A The user unit records and maintains daily operations in accordance with the relevant system.
B Check that the primary and secondary inserts of the functional units are in place.
C Check that the internal connection wire of the unit is strong and loose, causing fever.
D Dust is removed from the circuit breaker interplate.
E Check mechanical interlocks for accuracy and reliability.
F Check for electrical performance and movement.
G Equipment maintenance should be performed once a year and electrical insulation checks should be added.