MNS Low Voltage Draw-Out SwitchgearSystem of new modular and modularized de

Main circuit scheme number
Auxiliary circuit scheme number
Regular service condition
The ambient air temperature shall not be higher than +40°C and not lower than
-5°C, and the average temperature within 24 hours shall not be higher than
+35°C. When the ambient air temperature is at +40°C, the relative humidity
shall not exceed 50%. At lower temperatures, the relative humidity may be
higher, for example, 90% at +20°C. However, due to temperature changes,
moderate condensation may occur occasionally.
It is for indoor use, and the altitude of the installation site shall not
exceed 2000m. It should be installed in a place without severe vibration,
shock, and where electrical components are not corroded.
MNS Low Voltage Draw-Out Switchgear Structural Features
This switchgear has been technologically improved based on its original design
to better suit China's national conditions. The cabinet body uses C-shaped
profiles with a modulus of 25mm, which are connected by connectors to form
various frame structures and drawer units that can meet different requirements.
In the MCC cabinet, high-strength flame-retardant engineering plastic
components are used to make the safety performance more reliable. At the same
time, foreign functional boards are modified and combined with a modulus of
200mm, making it more conducive to the design requirements of mixed PC and MCC
cabinet bodies. The extraction unit (withdrawal unit) and the cabinet body
are equipped with a reliable interlocking device to prevent load-breaking under
energized conditions, improving safety. In addition, the cabinet body is
generally assembled from cold-rolled steel plates after passivation treatment.
It can also be made of aluminum-zinc coated steel plates according to different
user requirements.

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