XGN15-12~24 Air-insulated RMU(Fixed Type)

Selection

Operating conditions

1. Ambient air temperature: -15℃ ~+40℃ .Daily average temperature:≤35℃ . 2. Altitude: ≤1000m. 3. Relative humidity : Daily average≤95% ,daily averange of vapour pressure≤2.2kpa Monthly average≤90%，monthly averange of vapour pressure≤1.8kpa. 4. Earthquake intensity: ≤magnitude 8. 5. Applicable in the places without corrosive and flammable gas. Note: Customized products are available.

Features

1. Modular design, where each unit module can be combined and expanded arbitrarily, facilitating flexible system configurations and wide adaptability. 2. The cabinet adopts armored structure with metal partitions between compartments. 3. The operating mechanism adopts corrosion-resistant metals, and the rotating parts are designed with self-lubricating bearings, ensuring unaffected performance in various environments and eliminating the need for regular maintenance. 4. To accommodate power grid automation and improve distribution reliability, it can be equipped with motorized mechanisms, distribution network control terminal units, and possesses telecontrol functions. 5. The compact design of the cabinet incorporates a three-position rotary load switch, effectively reducing the number of components and enabling mechanical interlocking for five protection measures. 6. The primary circuit simulation single-line diagram and analog display can demonstrate the internal status of the switch, enabling easy, accurate, and safe operation.

Technical data

Rated voltage		Unit	12KV				24KV
Item		/	Load switch cabinet	Combinedelectrical cabinet	Circuit breaker cabinet		20KVSF6Ring switch equipment
Rated frequency		HZ	50/60	50/60	50/60		50/60
Rated current		A	/
Main busbar		A	630	630		630	630
Branch busbar		A	630	125①		630	630/≤100②
Rated insulation level		KV	/
Power frequency   withstand voltage	Phase-to-phase and phase-to-ground	KV	42	42		42	65
	Gap between breaks	KV	48	48		48	/
	Break control and auxiliary circuit	KV	2	2		2	/
Lightning impulse withstand voltage	Phase-to-phase and phase-to-ground	KV	75	75		75	85
	Gap between breaks	KV	85	85		85	/
Rated short-time withstand current		KA	/
Main circuit		KA	20/3s	-	25/2s		/
Grounding circuit		KA	20/25	-	25/2s		/
Rated peak withstand current		KA	50	-	63		/
Rated short-circuit making current		KA	50	80	63		50
Rated short-circuit breaking current		KA	-	31.5	25		31.5
Rated transfer current		A	-	1750	-		870
Rated active load breaking current		A	630	-	-		630
Rated closed loop breaking current		A	630	-	630		/
Rated cable charging breaking cable		A	10	-	15		25
Protection degree		/	IP3X	IP3X	IP3X		/
Mechanical life	Load switch	times	5000	5000	10000		3000
	Grounding switch	times	2000	2000	2000		2000

Notes：① up to the fuse rated current ② ≤100(Load switch－Fuse combination cabinet)

Structure

● Busbar room 1. The busbar room is arranged at the upper part of the cabinet. In the busbar room, the main busbar is connected together and runs through 2. the entire row of switchgear ● Load switch 1. There is a three position load switch installed in the switch room. The shell of the load switch is made of epoxy resin cast columns, and filled with sulfur hexafluoride (SF6) gas as the insulation medium. SF6 gas density meters or gas density meters with alarm contacts can be installed in the switch room according to customer requirements ● Cable room 1. The load switch has a spacious cable room, mainly used for cable connections 2. with sufficient space also to install lightning arresters, current transformers, lower grounding switches and other components Operating mechanism, interlock mechanism and low voltage control room 3. The low-voltage room with interlocking functions as a control panel also 4. Spring operating mechanism and mechanical interlocking device with position indicator installed in low-voltage room 5. The low-voltage room can also be equipped with auxiliary contacts, trip coils, emergency trip mechanisms, capacitive live displays, keylocks, and electric 6. operating devices 7. The low-voltage room space can also be used to install control circuits, metering instruments and protective relay 8. The 750mm wide cabinet has two identical low-voltage chambers, which can hold more accessories. The whole XGN15 switchgear can be divided into upper and lower parts. The upper part of the cabinet includes busbar room, load switch, operating mechanism and low-voltage room, which is separated from the lower part of the cable room. Therefore, it is safer and easier to repair and modify the equipment installed in the upper unit, and to replace the whole upper unit.

Phase plan

Phase plan number	DC01	DC08	DC01	DC07	DC04
main bus-bar TMY
XGN15-12/24 Disposablesystem diagram
Configuration	Incoming cabinet	Outgoing cabinet	Outgoing cabinet	Configuration	Measuring cabinet
Load switch FLN□-□D	1	1	1	1	1
Load switch FLRN□-□D	/	1	/	/	2
ChargeddisplayDXN-T/Q	1	/	1	1	3
Current Transformer LZZBJ9-□	/	/	/	/	2
Voltage transformer JDZ-□	/	3	/	/	/
Lightning arrester HY5WS	3	/	3	3	2
Fuse XRNT-□/□A	/	3	/	/	/
Meter	/	/	/	/	/
Protection method	/	/	/	/	/
Auxiliary functions	/	/	/	/	/
Operation mode	Manual operation	Manual operation	Manual operation	Manual operation	/

XGN15-24 Overall and mounting dimensions(mm)

XGN15-12 Overall and mounting dimensions(mm)

Schematic diagram of foundation

Switchgear diagrammatic sketch Switchgear installation Overall and mounting dimensions(mm)               Cable incoming and outgoing configuration

Ordering information

1. Main circuit diagram, busbar diagram for main circuit, allocation diagram. 2. Switchgear outline size. 3. spare parts and their quantity. 4. Customized products are available per your requirements.