Rockwill Electric Group
12/24/36kV Cable Branch Box With Switchgear Inside
Cable brand box with Ring Main Unit inside. It applies to AC 50Hz, rated voltage 12/24/36kV. It is widely used in industrial park, commercial center and mining, airport, railway, port, power distribution network. ...

Detailed description

  • Description
  • Technical data
  • 12kV/24kV/36kV Prefabricated Substation
  • 36kV/40.5kV Prefabricated Substation
  • Underground Prefabricated substation
  • Miniaturization Intelligent Prefabricated Substation

General:

The 12/24/36kV Cable branch box with switchgear inside apply to AC 50Hz, rated voltage 12/24/36kV, cable inlet and outlet outdoor distribution network, it is widely used in industrial park, dweller, commercial center and mining, airport, railway, port, power distribution network. Especially in urban network reconstruction project.

1.Complete insulated, sealed, no need maintain,reliable safety guarantee

2.Simplify the city grid system, to save investment

3.Outdoortype, dustproof, moisture proof,flood water resistance. corrosion resistance, strong adaptability to environment, flexible combination.

4.Compact structure, beautiful appearance, easy installation, maintainance free, and with electric monitor, short circuit indicator and lightning

5.Small area, low height, coordinate with the surroundings.

 

Sevice environment:

a).Air temperature: maximum temperatur:+40℃; minimum temperature:-25℃

b).Humidity: monthly average humidity 95%; daily average humidity 90%.

c).Altitude above sea level: maximum installation altitude:2500m

d).Ambient air not apparently polluted by corrosive and flammable gas, capor etc.

Item
Unit
Parameter
Rated voltage
kV
12
24
36
Rated current
kA
630
Frequency
Hz
50
Power frequency withstand voltage
kV
42
55
70
BIL
kV
75
125
170
Rated capacity
KVA
50KVA~20MV
Crust protection grade
 
IP33
Noisy grade
dB
Less than 55
Appearance dimensions
mm
Accoding to primary wiring circuit schema
Main components for options
Mainl load break switch
type
SC6/SFG
SC6/SFG
SC6-36
Earthing switch
type
FN18
FN18
FN18
Surge arrester
type
HY5W
HY5W
HY5W
Fuse
type
XRNT
XRNT
XRNT
Voltage indicator
type
L6
VT
type
JDZ
CT
type
LZZBJ

General

YB() series products is a kind of set of equipment which assembles the MV switch apparatus, transformer, LV distribution equipment together according to fixed connection scheme. This series substation is suitable for neighborhood unit, hotel, large-scale work site and high building that the voltage is 12kV /24kV/36kV/40.5kV, the frequency is 50Hz and the capacity is under 2500kVA.

Service environment

a) Air temperature: Maximum temperature: +40℃; Minimum temperature:-25℃
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level: Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake

 

Main technical specifications

Name   Unit   HV equipment   Transformer   LV Equipment  
Rated voltage   kV   12/24/36   (12/24/36)/0.4   0.4
Rated current   A   630 3/75-150/3750 Less than 4000
Frequency   Hz   50
Rated Capacity   kVA   50-2500
Pfr withstand   kV   42/50/70/95 2.5
BIL   kV 75/125/170/185  
Crust Protection Grade     IP23 Oil type 55; dry type 65 IP23
Noisy Grade   dB      
Appearance Dimensions   mm According to primacy wiring circuit schema
HV Room   LV Room Transformer Room

 

Main Designation Characteristics

The crust of the substation is designed according to the foreign advanced technology and physical reality. We provide many kinds of crust material such as aluminum alloy steel composite stainless steel board and non metal material(glass fiber).

The HV side use charge switch or vacuum circuit breaker. The transformer could be oil type hermetically-sealed type and dry type.

The proof of the box is double layers structure and between the layers is filled with foam. There are independent boards in HV and LV room, and in the transformer room will install auto thermal controller heater and cooling equipment.

Note: we offer special customized products according to client’s requirement.

36kV/40.5kV Prefabricated Substation Characteristics

This type substations are the HV side 40.5 kV, LV side 0.4-12 kV and 3 phase outdoor completeequipment .It is wide used in cities , towns ,factories and oil fields, wharfs etc. It is also used insome construction sites. The characteristics are small volume, convenient installation, low cost,high automation safe and reliable operation. Substation is combined with HV switch room,LVswitch room, relay room and transformer room.

 

Main technical specifications for 36kV/40.5kV Prefabricated Substation

Name
Unit
HV equipment
Transformer
LV Equipment
Rated voltage
kV
40.5
40.5/12/0.69/0.4
12/6.3/0.69/0.4
Rated current
A
Less than 1250
 
Less than 4000
Frequency
Hz
50
Rated Capacity
kVA
1250-20000
Pfr withstand
kV
70/95
42/2.5(Auxiliary)
BIL
kV
170/185
75
Crust Protection Grade
 
IP23
Oil type 55; dry type 65
IP23
Noisy Grade
dB
 
 
 
Appearance Dimensions
mm
According to primacy wiring circuit schema
36kV/40.5kV prefabricated transformer substation

 

Main Primacy Wiring Circuit Schemas for Substation(40.5kV)

Note: we offer special customized products according to client’s requirement.

This equipments also belong to this Prefabricated substation category with a compact and special function of HV, LV and Transformer are all underground. People can enter into it through a well.

This substation is suitable for installing in square seeded strip and park The clients can choose half-buried type or whole-buried type.

Sketch map of half-buried substation

Sketch diagram of whole-buried substation

Miniaturization Intelligent Prefabricated Substation

This series pre-fabricated substation uses imported SF6 ring switch as its HV incoming and outgoing network realized the power ring system easily. And the substation selects integrated automation system which can realize unattended mode.

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