12/24/36kV Cable Branch Box With Switchgear Inside

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.