Low Voltage Draw-Out Switchgear Cabinet
Zhejiang Tianrun Electric Co., Ltd. is one of the leading manufacturers and suppliers of low voltage draw-out switchgear cabinet in China. We are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk advanced low voltage draw-out switchgear cabinet from our factory. Also, quotation is available.
Product Overview
The MNS low-voltage Draw-out Type Switchgear, developed with reference to and comprehensive improvement of ABB's MNS series, features a standardized, serialized modular structure. Drawers are equipped with mechanical interlocking devices for safe and reliable operation. It is widely used in power plants, substations, industrial and mining enterprises, hotels, airports, docks, and communication centers such as broadcasting and television, for controlling power generation, transmission and distribution, energy conversion and consumption equipment. It can also provide reactive power compensation for the main busbar through capacitor compensation cabinets.
Product Advantages
- Withdrawable functional units: Units can be drawn out and replaced with ease, facilitating operation and maintenance, minimizing downtime, and improving equipment availability.
- Comprehensive safety protection: Mechanical interlocking with position indication effectively prevents misoperation for safe use.
- Wide applicability: Suitable for controlling various power-consuming equipment, and capable of reactive power compensation with capacitor units.
- Standardized modular design: Highly versatile and flexible assembly to suit various structures and operating environments.
- Compact structure: More functional units can be accommodated within a given space, saving installation area.
- Flexible layouts: Configurable to suit different site spaces and operating conditions.
- Easy extension: Modular structure facilitates system expansion, upgrade, and retrofit.
Specification
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Main Technical Parameters |
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Electrical Performance |
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Rated Insulation Voltage |
600V |
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Rated Operating Voltage |
380V, 660V |
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Maximum Operating Current of Main Busbar |
5000A |
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Rated Withstand Current of Main Busbar |
100kA |
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Rated Peak Withstand Current of Main Busbar |
220kA |
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Maximum Operating Current of Distribution Busbar (Vertical Busbar) |
1000A |
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Peak Current of Distribution Busbar (Vertical Busbar) |
80kA |
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Standard Type |
105kA (max) |
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Enhanced Type |
176kA (max) |
Structure Features
The basic structure of the switchgear cabinet is assembled from C-shaped profiles. The C-shaped proteins are made of steel plates bent with a modulus of E=25mm for mounting holes. All the cabinet frames and inner partitions galvanized for purification. The surrounding door panels and side panels are coated with high-voltage electrostatic spray. The basic structure of the cabinet is shown in Figure 1, and the basic dimensions of the cabinet.
Operating Conditions
- Ambient Temperature: The ambient air temperature shall not be higher than +40℃ or lower than -5℃, with an average temperature within 24 hours not higher than +35℃.
- Atmospheric Conditions: The air shall be clean. Relative humidity shall not exceed 50% at the maximum temperature of +40℃. At lower temperatures, a higher relative humidity is permissible (e.g., 90% at +20℃), but the possibility of occasional condensation due to temperature fluctuations should be considered.
- Altitude: The altitude shall not exceed 2000m.
- Transport and Storage: The device is suitable for transportation and storage within a temperature range of -25℃ to +55℃, and may withstand short-term exposure (not exceeding 24 hours) up to +70℃. No irreversible damage shall occur at these extreme temperatures, and the device shall operate normally under the conditions specified above.
- Note: If the above operating conditions cannot be met, the matter shall be resolved through negotiation between the user and the manufacturer.
Application
Power Generation, Transmission and Distribution
Power plants, substations, etc., for control, protection and energy conversion of power generation, transmission and distribution systems.
01
Industrial Sector
Industrial and mining enterprises, petrochemical and metallurgical industries, for motor control and power supply/distribution of production equipment.
02
Buildings and Public Facilities
Hotels, airports, docks, railway stations, large commercial buildings, etc., for building power distribution and power/lighting control.
03
Communication and Information Centers
Broadcasting and television centers, data centers, etc., ensuring stable and reliable power supply to critical equipment.
04
New Energy and Special Applications
Suitable for offshore platforms, marine vessels, nuclear power plants (subject to a separate technical agreement), as well as emerging power distribution scenarios such as new energy generation.
05
The Different among GCS, GCK, MNS
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Dimension |
GCK |
GCS |
MNS |
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Positioning |
Economy type |
Standard type, cost-effective |
High-end type |
|
Structural module |
Conventional structure, taller drawer units |
20mm module commonly used in China, standard drawer unit |
25mm module (C-profile), highly modularized |
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Drawer options |
Standard drawers |
Minimum 1/2 drawer |
Minimum 1/4 drawer, higher circuit density |
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Busbar system |
Horizontal busbar at cabinet top; vertical busbar without flame-retardant functional board |
Horizontal busbar at rear; vertical busbar mounted in flame-retardant plastic functional board |
Horizontal busbar rear-exit; vertical busbar in flame-retardant plastic functional board |
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Interlocking |
Relatively simple |
Mainly relies on the switch's own interlocking |
Additional interlocking mechanism on drawers for enhanced protection |
★ How to choose? Choose GCK for general projects, GCS for balanced performance and cost, and MNS for critical loads and high reliability requirements.
FAQ
Q1: What is the MNS low-voltage Draw-out Type Switchgear?
A: It is a low-voltage switchgear assembly developed with reference to and comprehensive improvement of ABB's MNS series. Featuring a standardized, serialized modular structure with mechanical interlocking devices on drawers, it is designed for safe and reliable operation.
Q2: What are the benefits of withdrawable functional units?
A: Units can be drawn out and replaced with ease, facilitating operation and maintenance, minimizing downtime and improving equipment availability. Combined with mechanical interlocking and position indication, it effectively prevents misoperation for safe use.
Q3: Why choose the withdrawable type instead of the fixed type?
A: Withdrawable functional units can be drawn out for maintenance or replacement individually without cutting off the whole cubicle, minimizing downtime. Fixed-type units have a simpler structure and lower cost, suitable for circuits with stable loads. Both can be flexibly combined within one assembly.
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