High Voltage Fixed SF6 Ring Main Unit(RMU) HXGN15-12/24/40.5KV

HXGN15 series is composed by standard finished function units from the factory, it adopts advantaged FLN36 load break switch (LBS), use SF6 gas with superior performance as arcing insulating medium.It is small ,compact and convenient installation, safety, stable working. It is widely used in 7.2~40.5kV electric power distribution system. The switchgear meet the requirements of standard IEC62271-200,IEC62271-100 etc.

Convenient Installation
Its small volume & light weight make user to install & delivery it more conveniently and easy . It can be completed wiring schemes according to user’s need, also can choose the intelligent control units to realize intelligent controlling & operation. Standard design make this product to be the best choice of users.

Simple Operation
Each switchgear has single line diagram(SLD) & analog displayer which can display inside parts. For operation, it has interlock board to guarantee the handle direction of rotation with correct operation. In order to avoid the operation in mistake, on the door, there has operation manual to supply & guarantee the simple & safe operation.

Model

Structural Features
Its enclosure ,door & the upper chamber is spray processing. All cabinets have main grounding busbar which can connect near cabinet. All the metal parts, like grounding switch & interlocking parts are connected with grounding busbar. In order to ensure the continuity, between the parts which connected by screws ,the connection is used by copper braid. On the back of cabinet,there has pressure relief door to ensure the gas release from the back to avoid inner burning arc. Its upper board is fixed by screws. So it can be opened from outside to connect bus. Its upper auxiliary devices chamber can be installed with terminals and other parts. After heighten the small chamber, it can realize the relay protection. The load break switch & grounding switch adopts block type interlock. The grounding switch & door adopts coercive interlock .Following below steps ,it can realize automatic interlock: close the door, turn on the grounding switch and close the load break switch. This separately operation can avoid fault.

Safe operation of HXGN15 series switchgear
●Its professional structure design to guarantee its operation safety.
●The whole switchgear is divided into 5 insulation intervals.
●The interlock structure is reliable, simple and convenient.

Structure Features
Appearance: its enclosure is used by cold –rolled steel or aluminium zinc plate mold. It is beautiful and high anti-erosion, compact ,small volume and convenient combination.The inner has five insulation intervals. The rear side has two pressure release exits.

Convenient installation: it can be assembled freely & simply as different design requirements. No special need for its installation size.

Maintenance –free: Good sealing,SF6 insulation gas pressure complies with IEC60298 standard, safe and reliable working, maintenance free.

Design Advantages
Pressure release :
There have two pressure release exits for bus room & cable room to ensure the pressure release under the condition of extreme to ensure person safety .

Three position/double position:
Natural interlock switch, only in “Close “、”Earthing “ or “Interlock” 3 position

Interlock Position:
Switch is interlocked with operation structure to avoid misoperation High voltage cable room is interlocked with operation structure to avoid opening the installation door under the condition of switch non-grounding to protect person safety.

Panel Display:
Panel analog primary circuit and clearly display that charge display can flash to display the electric parts. Five independently intervals to avoid the accident spread.
Independent interval:

No.	Item		Unit	Parameter
1	Maximum system voltage		kV	12	15	24	40.5
1	Rated voltage		kV	7.2、11	13.8、15	17.5、20、22	30、33、36
2	Rated current		A	630/1250
3	Rated frequency		Hz	50/60
4	1min Power frequency withstand voltage	Phase to phase, phase to earth	kV	42	48	55	85
		Fracture	kV	48	55	65	95
5	Lightning impulse withstand voltage	Phase to phase, phase to earth	kV	75	90	125/150	170
		Fracture	kV	85	105	150/160	185
6	Short time withstand current	Main circuit	kA	25/2s
		Earthing circuit	kA	25/2s
7	Rated withstand current (peak)		kA	63			50
8	Rated transferring current		A	1300-1700
9	Rated load circuit making current		A	630
10	Rated cable(line) charging breaking current		A	50/10
11	No load transformer breaking current		A	20
12	Cable charge breaking current in earthing fault		A	100			80
13	Rated short circuit breaking current (peak)		kA	20
14	Rated short circuit making current (peak)		kA	63			50
15	Protection level			IP4X
16	Load break switch life		times	5000
17	Earthing switch life		times	5000