China HXGN15A-12 medium voltage electrical ring main unit switchgear electrical rmu Manufacture and Factory

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HXGN15A-12 medium voltage electrical ring main unit switchgear electrical rmu

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HXGN15A-12 medium voltage electrical ring main ...

Product Details

Medium Voltage Switchgear
HXGN15A-12 Air-insulated RMU(Fixed Type)

Rating: Rated voltage 3~12KV, rated current reach to 630A for load break switch and 125A for combined switchgear.
Application:
mainly applicable in urban power grid features and renovation project, industrial and mining enterprises. high-rise buildings and communal facilities .For power distribution, controlling and protection on electric equipment as the loop power supply unit or
terminal equipment. It also can be installed in pre-loaded substation.
Feature:
Equipped with vacuum load switch and spring operating mechanism which can be operated by hand or electric. Grounding switch and insulating switch are equipped with hand operating mechanism .With small volume and high security.
Standard: IEC60420

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.

Technical data

No.	Item		Unit	Data
1	Rated voltage		kV	12
2	Rated current	Load break switchgear	A	630
		Combined switchgear	A	125
3	Rated short-circuit breaking current		kA	31.5
4	Rated active on-load breaking current		A	630
5	Rated short-time withstands current		kA	20
6	Rated withstands current(Peak)		kA	50
7	Rated power frequency voltage withstands		kV	42/48
	inter-phase,to earth and to the open contact
8	Thundering withstands voltage inter-phase,		kV	75/85
	to earth and to the open contact
9	Mechanical life		times	10000
10	Rated take-over curent		A	3150
11	Operating mode		/	Manual or automatic
12	Protection level		/	IP2X

Loop power supply principle

The loop power supply is composed of three basic unit to separate any one of the failure line and ensure the continuous power supply through the other unit. The branch line for the user could separated and protect the transformer which could facilitate the maintenance. The loop power supply could be expanded as per the user's requirements to form various protection plans.

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Feature

1. 8MF material adopted for the switchgear,modular holes available with E=200.
2. Switch disconnector ,vacuum load breaker switch, earthing switch and the switchgear door reliably interlocked,which could avoid miss operation.
3. Both manual and automatic operation are available.
4. There isleas sealed pin at the door of measurement chamber and meter chamber.
5. Prompt tripping could be realized to protect the equipments.
6. The design facilitate the operation at the front panel and the switchgear could be installed alongside the wall.
7. The switchgear is featured for its complete interlocking function: the load break switch could be operated to the making status when the switchgear door is closed and locked and the earthing switch to the making position.
When the earthing switch is at making status, input the insulation clapboard to its position, the switchgear door then, could be operated.
8. The Vacuum arc-extinguishing chamber and fuse are reliably connected. So as the fuse & switchgear door and insulation clapboard & the switchgear door.

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