Stong Mns Low-Voltage Withdrawable Switchgear

Advantages:
                      1.Our Company Has Great Reputation In Domestic                          Market.
                  2.Good Quality Guaranteed With Reasonable Price.
                  3.OEM,ODM Are Welcomed.
                  4.Goods Will Be Delivered On Time.
                  5.Factory Selling Directly
Descriptions:
MNS
Low-voltage Withdrawable Switchgear

MNS
Low-voltage withdrawable switchgear
 
Product  overview
MNS is a kind of modular, multi-function low-voltage
power distribution cabinet.MNS can accommodate to
need of power supply and distribution ,it ban be widely
used in power station ,substations,mining enterprises,
hotels,high rise buildings or underground installation,and
such low-voltage power distribution system.
MNS adoption of the cabinet1 structure with a high
degree of flexibility, according to the specific needs and
use different occasions to install a variety of models and
specifications of the components.
According to various electric apparatus, various types
feeder units can be installed in the same column of
cabinets or the same cabinet. For example: Feeder circuit
and motor control circuit can be mixed together.
MNS is a kind of full range of low-voltage switch
cabinet, Can meet your full range of needs. It's suitable
for all kinds of low-voltage system lower than 4000A.
  MNS can provide a high level of reliability and
safety .Humanized design, to strengthen the protection
of personal and equipment safety.
MNS is fully assembled structure. Its unique structure
and connection mode and the compatibility of various
components, can meet the demanding duration and
power supply continuity requirements.
Perform Standard: IEC439,GB7251.1
 
Normal conditions of use
1,Application occasions:Power distribution, motor
control;
2, Perform Standard: IEC439,GB7251.1 ;
3,Ambient temperature:-5C~+40C;
4,Environmental relative humidity of 40 degrees does not
 exceed fifty percent, At lower temperatures, a higher
relative humidity is allowed.(e.g. : 90 percent at 20C) ;
5,Installation location:Indoor ;
6,Altitude is not more than  2000m;
*If more than the above conditions,please consult with
our company.
technical parameter:
1.1 Form of incoming and outgoing lines :Cable bus bar
bridge
1.2 Cable in and out: Top or bottom
1.3 Connection form:Front or back of the cabinet
1.4 Protection level:IP30,IP40,IP54
1.5 Functional unit isolated form:Full isolation or partial
isolation
 

2. Cabinet size
2.1 Height:2200
2.2 Width:600,800,1000
2.3 Depth:600,800,1000
2.4 Surface treatment:High voltage electrostatic epoxy
powder coating
 
3.Electrical data
3.1 Rated insulation voltage:To 1000V
3.2 Rated operating voltage:To 660V
3.3 Rated frequency:50/60 HZ
3.4 Rated impulse withstand voltage:8 KV
3.5 Rated voltage of auxiliary circuit: AC380,
220V/DC220V
3.6 Overvoltage level
3.7 Class of pollution: 3
3.8: Rated current: 4000A
3.9: Rated current of horizontal bus bar: 4000A
3.10: Rated current of vertical bus bar: 2000A,1000A
 
4.Horizontal Bus bar
4.1 Rated short-time withstand current(icw): 50/80 KA
4.2 Rated peak withstand current: 105/176 KA
 
5.Vertical Bus bar
5.1 Rated short-time withstand current(ICW):50 KA
5.2 Rated peak withstand current: 105 KA
 
6.grounding system: TT,IT,TN-C-S
 
7.Maximum out of line circuit breaker: 4000A
 
*The cabinet with a glass door, Its minimum depth is 725.
  In order to facilitate the laying of the horizontal
Bus bar ,the same system arrangement, cabinet depth
should be unified. If it is not uniform, it should add a
400mm-wide bus adapter at each connection point.
   A bus bridge or outlet busbar cabinet, its depth should
be more than 800mm.
*Products with special requirements should consult with
 the company.
 
Main Features:
1.In order to be in favor of the installation of equipment
and site operation , a  special cable channel is arranged
 in the power distribution cabinet. And equipped with the
corresponding cable fixing parts.
2.Each drawer unit positioning accurately, clear
indication ,and in each position can be locked with at
most 3 padlocks.
3.Special section structure and the connection mode to
ensure the strength of the cabinet.
4.The drawer unit adopt "the contact wire is directly
inserted with the L type vertical bus"mode,convenient
and reliable.
5.Unique 3 section type guide rail,to make the drawer
incoming or going more flexibly and conveniently,and
 under the condition of the drawer units is not out of the
cabinet,people can check repair or replace the
internal components and wirings directly.  
 

Function unit room
Vertical busbar chamber
Horizontal busbar chamber
Cable room
Division of area in distribution cabinet
According to the function of each part, the power
 distribution cabinet can be divided into 4 separate
compartments.
1.Horizontal busbar chamber(A separate compartment
at the top or back of the cabinet.)
1.1 the horizontal busbar is put in the back of the cabinet
 when using front outlet.
1.2 Horizontal busbar can also put at the top of the
 cabinet.
2.Vertical busbar chamber(located in a separate
compartment on the left side in the back of the
cabinet.)
The" L"type busbar  is used in the vertical busbar, and
is placed in the special fully closed function board.not
only the dynamic stability of the vertical busbar is
guaranteed, but also can the charged part protection
grade reach "IP20" when the drawer units are drew
out.
3.Function unit room(located in every separate
compartment on the left side in the front of the cabinet.)
drawer unit or fixed separate unit.
4.Cable room
Located in the front right of the cabinet when outlet at
the front.
Located in the back right of the cabinet when outlet at
the back.
Structure and features
1.Framework
1.1 The cabinet body frame using C type special
materials (25mm module),adopt three connection,by
 locking screws and high strength bolt assembly.The
profile has a variety of specifications and sizes, can be
based on different cabinet type or the actual needs,
according to the corresponding modules combined into
different specifications of the cabinet.
1.2  The cabinet is made of 2mm cold rolled steel or
tibnor.
 
2.Shell
According to the body structure and the actual
requirements, the cabinet body frame can be installed
 with various types of door panel for protection.
2.1 The front of the cabinet
a.Transparent glass door
b.Common door panel
c.Drawer panel
d.Ventilation door
2.2 back of the cabinet
a.back of the cabinet open-door.
b.The cabinet which is installed on the wall,back of the
cabinet adopt sealing plate,directly fixed with screws.
 
2.3 Side of the cabinet: Side panel fixed with screws.
2.4 Top of the cabinet
a.Top panel (opening the air hole, when upper outlet,
According to the size of the cable choose the
corresponding outlet ring or flange plate.)
2.5 Bottom of the cabinet: Bottom panel(According to
the size of the cable choose to use corresponding outlet
 ring or flange plate.)
2.6 Between cabinets and cabinets, Using the complete
separator to separate.
 
3. Cabinet combination
3.1 Drawer cabinet(MCC)
a.The drawer cabinet is composed of drawers,cabinet
frame and related components, electrical components
which are all fixed in the drawer.Drawer unit normal
standard specifications: 8E/4 , 8E/2 , 8E , 16E , 24E
(E=25mm) these 5 specifications.The same specifications
of the drawer can be easily interchanged.
b.The rated current of the drawer to 400A, each device
can be equipped with nine 8E unit drawers, Can be
combined into 36 loops(8E/4).
c. Mainly used for motor control loop, can also be used
 for power distribution.
3.2 Fixed cabinet ,This kind of cabinet is mainly used for
 the incoming cabinet, the contact cabinet, the
capacitance compensation cabinet, the frequency
conventer cabinet, the soft starter cabinet and so on.
 
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3.3 Mixed cabinet
a.drawer unit and fixed unit can be mixed installed in the
 same cabinet.According to the modulus, 8e as a unit to
combinate.
b.Power distribution circuit and motor control circuit.
3.4 Fixed separate cabinet
a. Mutual isolation between each circuit unit ,Using the
plug-in or draw out type circuit breaker in order to ensure
the convenience of equipment maintenance.
b.Mainly used for distribution circuit, but also can be
used for some of the larger power motor control loop.
 
4.Horizontal busbar
4.1 Horizontal busbar of the cabinet is arranged  in the
 horizontal busbar chamber of the cabinet which can be
 put at the top or back of the cabinet.
4.2 When the horizontal busbar is placed in the cabinet,
it can be divided into upper and lower layers.
a.  The single layer horizontal busbar system is composed
of 2 bus bars, which is suitable for the system current no
more than 2500A .
 
b. When the system current is more than 2500A, the
horizontal bus bar is arranged in the double deck.
Each phase bus is composed of 4 bus bars. (Rated
current up to 4000A).
Two layer busbar section size can be different.
c. Busbar material is T2 copper,Specifications
have (30mm*10mm,60mm*10mm,80mm*10mm),
different interface size specifications of the bus can also
be connected,and the horizontal busbar can be
 connected with the bus bar without punching.
4.3 The cabinet with back outlet structure,the horizontal
busbar should be put at the top of the cabinet(The
maximum current 3150A, when the current exceeds
3150A, an 8E unit must be reduced,the height of cabinet
 function units is 1600mm).
 
 
5.Vertical busbar
5.1 Vertical busbar
a.The vertical busbar is arranged in the vertical busbar
chamber,used as the connection between  functional
units and  bus bars.The vertical busbar use "L"type
rectangular copper busbar.Placed in a special multi-
function board, can be three-phase or four-phase.
b.protection grade can reach IP20 when the drawer
units are drew out.
 
6.Protective conductor
6.1Protection conductor used to ensure that the skeleton
of the equal potential connection,It consists of a
horizontal and a vertical conductor located in each of
the cabinets,The horizonal conductor is connected with
 the cabinet body frame and other horizonal conductors  
, vertical conductors used for the protection of power
cable and the connection with grounding wire.
6.2 The section of protective conductor  is according to
the actual needs of current,choose corresponding
 specifications of the standard copper busbar to
produce.
 
7.Little Control busbar
7.1 It is used to provide power supply for the entire
control circuit, as well as some communication
equipment or field bus working power supply.
7.2 It can be installed in a special compartment, which
can be laid in the whole system according to the need.
 
8. Cable room
8.1 It is a dedicated channel for laying power cables
and control cables,placed in a separate compartment
 which is located in the front or back of the cabinet.
8.2 The cable room has dedicated primary and
secondary terminal and corresponding cable fixing
member.
8.3 According to the actual size of the cable and the
ways of incoming and outgoing wire in the cabinet,a
cable outlet ring or an outlet flange plate is arranged on
 the bottom plate or the top cover plate.
8.4 The size of cable room is allowed to change
according to the needs of customers by providing us
 with corresponding modulus.
 
 
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Functional unit
1.Drawer type functional unit
1.1 The drawer is composed of the function components
comprising a plurality of mechanical mechanisms.These
institutions ensure that the drawer has a link / test /
separation / removal and other locations,and can be
locked by padlock in different locations.At the same
time, the display, control and man-machine interface
elements are integrated on the front panel.
1.2  Through the operation handle and the large
interlocking, the drawer can be positioned accurately in  
the positions of connection / test / separation / removal
 and so on.Each position on the front panel has
corresponding identification,convenient and intuitive.
1.3 When the breaker is closed, the mechanical interlock
 prohibited drawer movement, to ensure the safety of
operation.
1.4 In the course of operation, it is possible to check the
internal situation of the drawer.Therefore need to open
the drawer panel,At this time, the drawer panel can be
opened with the corresponding unlocking tools.
1.5  Each drawer unit is completely independent and
 completely isolated from the drawers.
1.6 The same specifications of the drawer units can be
exchanged flexibly.
1.7 The outlet side is directly connected with the fixed
outlet connecting piece, and the secondary line is
connected with a special  secondary wiring plug-in.
(Two plug-in unit 804 up to 16 cores,8e / 2 units and
above, for the 32 cores)
1.8 Various specifications of the drawer unit are
corresponding to the import and export of rail and roller,
Can be used to guide the incoming and outgoing and
positioning.The use of roller, can effectively reduce the
 required force of operation.
1.9 The three section type guide for not only the drawer
out of more flexible, and can effectively guarantee the
drawer cabinet body skeleton is derived,even in the
 condition that the drawer unit does not leave the
skeleton of the premise, can the drawer units also be
carried out maintenance or maintenance.
1.10 According to the height of the drawer unit or the
size of the circuit current, the unit and the above drawer
 can also be equipped with a propelling mechanism.
1.11 The drawer unit is particularly suitable for motor
control circuit. The distribution loop can also be selected
according to various functions and practical needs.
 
2. Fixed separated function unit (Based on fixed or plug-
in components)
2.1 The functional unit has the advantages of simple
 structure and convenient operation,also has the
characteristics of clear separation and separation
reliable.Suitable for distribution circuit or motor control
circuit.
2.2 The inserted element can be drawn out for
maintenance and replacement without the need to cut
off the power supply.The use of such components can
be guaranteed that ,in the equipment maintenance,
people just have to draw out the corresponding circuit
components,and it does not affect the other loops of the
 whole distribution system.
2.3 Through the operating mechanism and interlock, can
ensure that it's unable to open the door when the
breaker is closed, enhance the safety of the equipment.
2.4 When the device is running, if you need to set or
check the internal components of the unit, you can use
the corresponding unlock tool to open the panel.
 
3.Draw out type functional unit of cabinet
3.1 The equipment is installed on the base of a drawing
 frame,has positions of connection / test /separation /
removal. Each position has a corresponding status
indication, and can be locked in this location.
3.2 When the position is change,In front of the switch will
have the corresponding position change instructions.The
 degree of Protection IP20 can maintain in any positions.
3.3 The scheme greatly simplifies the maintenance of
large power equipment,Can be used in the incoming,
 contact and distribution circuit.

 


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