MNS Low-voltage Withdrawable Switchgear
Model and Definitions
Environmental conditions for use
◆The surrounding air temperature should not exceed +40℃and not be lower than -5℃, with an average temperature within 24 hours not exceeding +35℃.
◆Atmospheric conditions: The air should be clean, with Relative Humidity not exceeding 50% at the maximum temperature of +40℃. Higher Relative Humidity is allowed at lower temperatures, such as 90% at +20℃; however, temperature changes should be considered, as condensation may occur occasionally.
◆The altitude should not exceed 2,000 meters.
◆This device is suitable for transportation and storage processes within the temperature range of -25℃to +55℃. For a period short (not exceeding 24 hours), it can reach +70℃. At these extreme temperatures, the device should not suffer any irreparable damage and should operate normally under standard conditions.
◆If the above application conditions cannot be met, the user and the manufacturer should negotiate a solution.
◆When this device is used on offshore oil drilling platforms and nuclear power plants, a separate technical agreement should be signed.
Cabinet Structure
The basic structure of the switchgear cabinet is composed of C-shaped profiles assembled together. The C-shaped profiles are made of steel plates bent with E=25mm as the modular mounting hole. All cabinet frames and internal partitions undergo galvanized phosphating treatment. Surrounding door panels and side panels are finished with high- voltage electrostatic spraying.
Technical Parameters
|
Electric Performance |
|
|
Rated Insulation Voltage |
660V(1000)V |
|
Rated Working Voltage |
380V、660V |
|
Maximum Working Current of Main Busbar |
5000A |
|
Rated Withstand Current of Main Busbar |
100kA/1s |
|
Rated Peak Withstand Current of Main Busbar |
220kA/1s |
|
Maximum Working Current of Distribution Busbar (Vertical Busbar) |
1000A |
|
Peak Current of Distribution Busbar(Vertical Busbar) |
|
|
Standard |
105kA(Max)/0.1s |
|
Reinforced |
176kA(Max)/0.1s |
|
Level of Protecti |
|
|
Complies with lEC 529 and DIN 40050 standards: |
|
|
IP30: Provides protection against solid objects larger than ф2.5mm. |
|
|
IP40: Provides protection against solid objects larger than ф1.0mm. |
|
|
IP54: Offers protection against dust and splashes from any direction |
|
|
(Note: When ordering lP54 Level of Protection,consultation with the manufacturer is reguired.) |
|
Types of Switch Cabinet
Power Distribution Center Cabinet (PC): Can utilize circuit breakers from series such as Emax, MT, 3WN, AH, and ME.
Motor Control Center Cabinet (MCC): Assembled from drawers of various sizes, with the main switch for each circuit using high-breaking capacity molded case circuit breakers or rotary load switches with fuses. It includes a power factor automatic compensation cabinet.
(equipped with manual, automatic, and remote power factor compensation devices).
Cabinet Schematic Diagram
Schematic Diagram of Compound Mode
Installation Schematic Diagram
