| 1.Range
of application |
| This device is applicable to power distribution system of
industries of power plant, petroleum, chemical, |
|
metallurgy, textile and high-rise building.
And applicable to power supply system at location required high
degree |
|
of automation and interface with the
computer as large scale power plant, petrochemical system,
served as 3 phase |
|
AC 50(60) Hz with rated working voltage not
exceeding 660V, rated current not exceeding 4000A. |
| Design
of this device is compliant with the following standards: |
| IEC439-1 《Low Voltage Unit Switch Equipment and Control
Equipment》 |
| GB7251.1-1997 《Low Voltage Unit Switch Equipment and Control
Equipment》 |
|
2. Type and the meaning |
| |
| 3.Service
conditions |
| 3.1
Ambient temperature not higher than +40℃, not lower than -5℃.
Average temperature not higher than +35℃ |
|
within 24 hours. Reduce the capacity to run
when over temperature. |
| 3.2 Altitude of using site not exceeding 2000m when used indoor. |
| 3.3 Ambient air relative humidity not exceeding 50% at max.
temperature +40℃, higher humidity is allowed at |
|
lower temperature, 90% at +20℃,
condensation occasionally because of temperature change shall be
considered. |
| 3.4 The lean between equipment and vertical plane shall not exceed
5°, and the whole group cabinet row |
|
relative neat (compliant with GBJ232-82
standard). |
| 3.5 The equipment shall be mounted at site without serious vibration
and impact in order to protect the |
|
electric components. |
| 3.6 Please consult our company is special requirement is needed. |
| 4.Structure
character: |
| 4.1 The
main framework of device use 8MF structural steel, the framework
adopts assembling and partial |
| welding 2 structure forms.
Pore modulus E=20mm installed on the main framework. |
| 4.2 Each
function room of device is separated strictly from each other,
the main compartment is divided |
| into functional unit rooms,
bus room, and cable room. Each room is relatively independent
function modules. |
| 4.3
Dimension of cabinet body of device |
Height |
2200 |
Width |
400 |
600 |
800 |
1000 |
Depth |
800 |
1000 |
800 |
1000 |
600 |
800 |
1000 |
600 |
800 |
1000 |
|
| 4.4 Function
unit: |
| a）The
modulus of drawer floor height is 160mm, being divided into: 1/2
unit, 1.5 unit, 1 unit, 2 unit, 3 unit |
| five dimension series. Unit
loop rated current 400A and lower; |
| b）Dimension
of drawer only changes on the height, the width and depth will
not be changed, drawers with same |
| function unit have good
interchange ability. |
| c）Each
MCC cabinet can be installed with eleven 1 unit drawer or
twenty-two 1/2 unit drawer, of which larger |
| than 1 unit drawer mostly
adopts multifunction backboard; |
| d）In
and out line of drawer adopts joint bar of same dimension plate
structure with different plates |
| according to the current
level. |
| e）The
switchover between 1/2 unit drawer and cable room adopts back
board structure ZJ-2 type switchover |
| pieces; |
| f）The
switchover between unit drawer and cable room adopts bar and
active tube type structure of same |
| dimension ZJ-1 type
switchover pieces according to current stepping; |
| g）There
are obvious marks on the panel of drawer as: OFF, ON, TEST, DRAW
OUT etc. |
| h）There is no
mechanical interlock device for drawer unit; |
| 4.5
Feeder cabinet and motor control cabinet
equipped with specialized cable separating room, connection |
| between function unit and
cable room can be realized through switchover piece or copper
bar, which can increase |
| the using reliability of
cable and provide installation and maintenance for the user with
great convenience. |
| There are two width
dimension (240mm and 440mm) for choose, which can be determined
by the quantity of cable, |
| section and the requirement
of installation and maintenance of the user. |
| 4.6
Auxiliary contact joint coupled number of function unit of
device: for 1 unit and larger is 32 pairs, 1/2 |
| unit 20 pairs, meeting the
requirement of automation user and computer interface. |
| 4.7
Considering the universality and safety of dry-type transformer
and economics of oil-immersed transformer, |
| the device can be composed
as a unit with dry-type transformer, and connected with LV bus
of oil-immersed |
| transformer conveniently. |
| 4.8
Drawer as main body, meanwhile with withdraw and fixed type,
which can be combined and being selected |
| freely. |
| 4.9
The device is designed by three-phase five-wire system and
three-phase four-wire system, PE+N or PEN type |
| can be chosen conveniently
by design department and the user. |
| 4.10
Protection class of cabinet body is IP30, IP40 type. |
| |
