High Voltage Withdrawable 24kv Vs1 Vacuum Breaker Kyn28-24kv Incoming Distribution Panel

• Shell Material: Stainless Steel
• Voltage Level: Medium Voltage
• Installation: Removable
• Structure: Cabinet
• Current: AC
• Transport Package: Track
• Model NO.: KYN28-24KV
• Trademark: JUNKE
• Origin: China
• HS Code: 8538909000
• Production Capacity: 1000PCS

Product Description

• KYN28A air-insulated metal-clad withdrawable switchgear 3-phase AC 50/60Hz. It is mainly used to receive and distribute 7.2~24kV network electrical and control protection and monitoring to line circuit.
   The cabinet is equipped with VS1 , Vacuum circuit breaker, also can be equipped with imported VD4 vacuum circuit breaker and VC series vacuum contactor. 
  Technical Parameter Of Switchgear

No	Name		Unit	Data
1	Rated voltage		kV	12	15	24
2	Insuation level	Lightning impulse withstand voltage	kV	75/85	90/105	125/150
		1min power frequency withstand volatge	kV	42/48	48/55	55/65
3	Rated frequency		Hz	50/60
4	Rated current		A	630,1250,1600,2000,2500,3150, 4000
5	4s short time withstand current		kA	20,25,31,31.5,40,50
6	Rated peak withstand current		kA	50,63,80,100,125
7	Thickness
7.1	Base frame		mm	2.0
7.2	Side panels		mm	2.0
7.3	Top cover(with provisions of louvers for heat dissipation)		mm	2.0
7.4	Doors		mm	2.0
8	Live cable indicators for incoming & outgoing cables			Supply Live display
9	Material			Steel sheet coated with aluminum-zinc alloy
10	Protection level			Enclosure IP4X,partition of each compartment is IP2X
11	Standard			IEC62271-200
12	Color			RAL7032 / RAL7035

A.Circuit breaker chamber
B.Bus chamber
C.Cable chamber
D.Relay instruments chamber
1.Bus bar
2.Fix contact box
3.Circuit breaker
4.Earth switch
5.Current transformer
6.Capacitive voltage divider

 
  
7.Lightning arrester
1.Enclosure  2.Branch small bus  3.Bus bushing  4.Main bus  5.Fix contact device 6.Fix contact box 7.CT 8.Earth switch 9.Cable
 
A. Bus chamber B. Circuit breaker truck chamber C. Cable chamber D. Relay instruments chamber
1.1 pressure relief device 1.2 Control small wire slot 14. Secondary plug 15. Circuit truck
16. Heater
 
  
10.Lightning arrester 11.Grounding main bus 12.Loading and unloading type partition
13.partition(valve) 17. Draw out type horizontal partition11.Grounding main bus
18. Earthing switch operation mechanism 12.Loading and unloading type partition
19.Bottom plate
The switchgear is composed of a fixed body and a withdrawable part (the handcart) (switchgear structure shown in Figure 2), switchgear enclosure and function modules are using aluminum-clad galvanized steel sheet to bolt together . The protection level of the switchgear enclosure is IP3X, while the protection level is IP2X between the partition boards and circuit breaker door .

KYN28A-12/15/24 type switchgear could match VS1 type vacuum circuit breaker handcart and VD4 vacuum circuit breaker handcart and ABB manufactured VC series vacuum contactor, switchgear can be installed to back-to-back arrangement. The switchgear installation and commissioning can be operated in the front, so the switchgear can be mounted against the wall, the biggest advantage of againsting the wall can save area, and can also off wall installation, namely double maintenance type, the two of internal structure layout is not uniform, it has the advantages of convenient maintenance.

Enclosure And Partition

• The enclosure and partition of the switchgear is made of top quality imported aluminum-clad galvanized steel sheet through multiple edge-folding processing with CNC machine tool. The assembled switchgear could keep uniform in dimension, and it has high corrosion resistance and oxidation resistance and higher mechanical strength than equal steel sheet. The switchgear is divided to handcart chamber ( circuit breaker chamber ), bus chamber , cable chamber and relay instrument chamber ( LV chamber ) each unit enclosure are independently earthing.

Cabinet Overview

• The enclosure and partition of the switchgear is made of top quality imported aluminum-clad galvanized steel sheet or steel sheet through multiple edge-folding processing with CNC machine tool. The assembled switchgear could keep uniform in dimension. Aluminum-clad galvanized steel sheet has a strong corrosion resistance and oxidation resistance, and higher mechanical strength than qual steel sheet. The switchgear is divided to handcart chamber ( circuit breaker chamber ), bus chamber , cable chamber and relay instrument chamber ( LV chamber ) each unit enclosure are independently earthing .The door of switchgear are using electrostatic spraying to make the surface with the advantage of anti impact, corrosion resistance, beautiful appearance (color can be set by the user) etc..

Outline Dimension

	Description	12(15)kV	24kV
Height(B)	Cabinet	2300mm	2430mm
Width(A)	Branch bus current less than 1600A, short circuit break current at 31.5kA	800mm	1000mm
	Branch bus current more than 1600A	1000mm	1000mm
Depth(C)	Cabinet	1500mm	1860mm
Weight(kg)	800~1200

Switchgear Outline Dimension Diagram 

• A Handcart
  The truck frame series adopts thin steel plate by CNC machine after processing by riveting, welding to make it. According to the use of handcart, which can be divided into circuit breaker handcart, voltage transformer handcart, isolator handcart, metering handcart, etc.. The handcart with same purpose could convenient to exchange.The handcart has the isolation position, the test position and the work position in the cabinet, each position is provided with the positioning device, so as to ensure that the handcart can not move freely when the position is in above , while moving handcart, it must be unlocked

• B Bus room
  The bus bar is led from one switchgear to another switchgear by branch bus bar and static contact box to fix. The flat branch bus bar is connected with the static contact box and main bus bar by bolts, and it does not need any other wire clip or insulator connection. When the user and the special needs of the project, the busbar connection bolts can be insulated and end cap packaging. When the bus across clapboard of the switchgear by bus bushing to fix. If an internal fault arc occurs, the accident can be limited to extend to the adjacent panel and the mechanical strength of the busbar can be ensured.

• C Cable room
  An cable room could install current transformer, grounding switch, arrester and cable, and at the bottom of the preparation of slotted removable aluminum plate to ensure the construction site conveniently.

• 
  D Relay Instrument Room Instrument Room Door Open, Instrument Room Inner View
•  
• 
  D Relay Instrument Room Instrument Room Door Close, Instrument Room Front View 
• 
  Lock Structure

• D relay instrument room
  The relay instrument room is used to install all kinds of relays, instruments, signal indication, operation switch and other components. In addition, according to user requirements for adding a small bus room in the top of the instrument room , and can lay of sixteen loops controlling small bus .

• Pressure relief device
  A pressure relief device in the upper handcart rooms, bus room and cable room, when the circuit breaker or main bus, cable indoor occur internal fault arc ,with the appearance of arc, internal pressure of switchgear rises, and reaches a certain pressure, the pressure relief device at the top of the metal plate will be opened automatically, and release the pressure and excretion of gas to ensure the safety of operators and switchgear 

• Lock structure
  Connection between the door and the cabinet with lock structure, and with the lifting mechanism to make it more convenient for opening the door, when medium door is in the closed state, which is connected with a strength of the cabinet body, strengthens the ability to effectively combat internal arcing fault.

Avoid Misoperation Interlocking Device

• The switchgear has reliable interlock device, which provides reliable safety and protection for operators and equipment , its function as follow:
  1 When the grounding switch is in open position, the handcart can move from the test position to service position.
  2.The handcart of the circuit breaker has been fully engaged in the test or service position before operation.
  3.Handcart is in the service position, the secondary plug is locked and can not be removed.
  4.The grounding switch is closed, the handcart cannot from the test position move to service position .
  5.Grounding switch can only be operated when the handcart is in the test position or isolated position. The switchgear can be equipped with an electromagnet locking mechanism in the grounding switch operating mechanism to improve the reliability to prevent high voltage charged and misoperation grounding switch. Its order can be according to the user's needs.

Secondary Plug And Handcart Position Interlock

• The secondary wires of the switchgear is connected with the secondary of the handcart through the manual secondary plug. The movable contact of the secondary plug is connected by the handcart and a nylon corrugated telescopic pipe, and the secondary static contact seat is arranged on the upper right side of the handcart compartment of the switchgear. Handcart is only in the test position and then can plug and remove secondary plug. When the handcart is in the service position, the secondary plug is locked and can not be removed ,because of the interlocking mechanism.

Grounding Device

• In a separate cable room install 8 x 40mm grounding bus bar, this row can run through the adjacent cabinet and good contact with cabinet, this ground row directly grounding for components using, at the same time ,as the whole cabinet with aluminum-clad galvanized steel sheet combining together, so that the entire cabinet are in good grounding state to ensure the safety operator touching cabinet .