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Electrical MCC panel / Motor control center panel

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Port: China
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability: 100 Set/Sets per Month
Brand Name: ZHONGSHENG
Rated insulation voltage: up to 1000V
Place of Origin: China
Product name: MCC panel
Rated impulse withstand voltage: 6kV, 8kV, 12kV
Rated operating voltage: up to 690V
Model Number: MNS
Rated frequency: 50Hz/60Hz
Packaging Detail: Wooden package.
Hubei Zhongsheng Electric Co., Ltd.
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Product Description

Product name: MCC panel

Model no.: MNS

Description:

MNS mcc panel is a metal enclosed low voltage power circuit breaker switchgear offers excellent flexibility due to the modularity of both the electrical and mechanical design. The modularity enable customization of the structural design, interior arrangement and degree of protection. It's modular design is widely used for power distribution and motor control.

Technical parameter:

Rated insulation voltageup to 1000V
Rated operating voltageup to 690V
Rated frequency50Hz, 60Hz
Main busbarRated currentup to 6300A
Rated peak withstand currentup to 250kA
Rated short-time withstand currentup to 100kA
Distribution busbarRated currentup to 2000A
Rated peak withstand currentup to 176kA
Rated short-time withstand currentup to 100kA
SizeWidth600mm, 800mm, 1000mm
Depth800mm, 10000mm
Height2200mm
Forms of separationup to Form 4b
Degrees of protectionIP30

Mechanical design:

1. Frame construction: The basic elements of the MNS frame construction are "C" shaped steel profiles with a 25mm hole pitch. This 25mm equals the dimension of 1E used in MNS to define the area usage within the switchgear. Each cubicle is precision constructed by bolting horizontal and vertical profiles together, to form a rigid modular structure. The profiles are galvanic protected against corrosion.

2. Enclosure: MNS switchgear enclosure is made of sheet steel protected by galvanic coating and powder coating for maximum durability. The fixing of the enclosure with respect to doors, roof plates, rear and side walls is achieved with thread forming screws. Final construction varies depending upon the required degree of protection. In accordance with the general safety philosophy followed with MNS, each compartment and sub-compartment which requires access for commissioning, operation or maintenance, has its own door.

Functional compartments:

The switchgear is divided into compartments thus separating different functional areas: equipment compartment, busbar compartment, cable compartment.

low_voltage_switchgear_7.JPG

Busbar system:

1. Main busbars: The MNS main busbar system is arranged in the rear of the switchgear. This assures a maximum distance between the busbars and the operator and maintenance staff. the main busbar system is fully separated from the equipment compartment as well as from the cable compartment. The busbar system and all associated parts are manufactured from copper.

2. Protective earth and neutral busbars: As a standard, protective earth and neutral busbars run horizontally with the front of the switchgear just above the base. The PE busbar is fastened to the frame to assure electrical continuity. Inside the cable compartment the run vertically, located on the front right hand side of the compartment.

3. Distribution busbars: A fully phase segregated and encapsulated 3 or 4 pole distribution busbar system runs the full height of the cubicle.

Withdrawable modules:

1. Modules can be easily exchanged under operational conditions thus assuring maximum flexibility.

2. Module operation: MNS modules are operated with the multifunction operating handle. This handle also activates the electrical and mechnical interlocking of the module and the module door. No further tools or unlocking devices are necessary to withdraw a module, thus replacing a module takes less than a minute. Replacement as well as retrofitting of modules can be performed under live condition, should plant operating procedures allow.

low_voltage_switchgear_8.JPG

8E/4 and 8E/2 withdrawable module positions:

low_voltage_switchgear_9.JPG

ON: Module is inserted, main switch closed, main and control circuit connected.

OFF: Module is inserted, main switch open, main and control circuit disconnected, padlocking possible.

TEST: Module is inserted, main switch open, main circuit disconnected, control circuit connected, padlocking possible.

MOVE: Module may be completely withdrawn from the switchgear.

ISOLATED: Module is withdrawn 30mm from the inserted position, main switch open, main and control circuit disconnected, padlocking possible.

8E, 16E and 24E main switch handle positions:

low_voltage_switchgear_10.JPG

ON: Main switch closed.

OFF: Main switch open.

8E, 16E and 24E mechanism handle positions:

low_voltage_switchgear_11.JPG

ON: Module is inserted, main switch closed, main and control circuit connected.

TEST: Module is inserted, main switch open, main circuit disconnected, control circuit connected, padlocking possible.

MOVE: Module may be completely witchdrawn from the switchgear.

ISOLATED: Module is withdrawn 30mm from the inserted position, main switch open, main and control circuit disconnected, padlocking possible.

Service condition:

1. Altitude: up to 2000m.

2. Ambient temperature: -15℃ to 40℃.

3. Relative humidity:

    Daily average relative humidity: ≤ 95%.

    Monthly average relative humidity: ≤ 90%.

4. Special service conditions: on request.

Installation foundation diagram:

low_voltage_switchgear_12.JPG

low_voltage_switchgear_13.JPG

low_voltage_switchgear_14.JPG

Standards applied:

1. GB7251.1-2005: Low-voltage switchgear and controlgear assemblies Part 1: Type-tested and partially type-tested assemblies

2. IEC 60439-1:1999: Low-voltage switchgear and controlgear assemblies Part 1: Type-tested and partially type-tested assemblies

3. JB/T 9661-1999: Low voltage withdrawable switchgear assemblies

Typical primary scheme:

low_voltage_switchgear_15.JPG

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