SF6 Gas Insulated Ring Main Unit

1 SF6 Ring Main Unit exported to Korea, Viet. and Pakistan 2 ISO 9001 Standard 3 OEM is accepted 4. Got Type Test report

Parameters

No.	Item				Value
1	Rated Voltage				24kV
2	Rated Current				630A
3	Rated Frequency				50Hz/60 Hz
4	Rated Breaking Current				630A
5	Rated Short-circuit Making Current				50 kA
6	Rated Peak Withstand Current		Main Circuit		50 kA
			Grounding Switch		50 kA
7	Rated Short-time Withstand Current		Main Circuit		20 kA/4s
			Grounding Switch		20kA /2s
8	Rated Insulation Level		Power Frequency Withstand Voltage		Impulse Withstand Voltage
		Between Breakers	79kV		145kV
		Between Phases	65kV		125kV
		To earth	65kV		125kV
9	Mechanical Endurance				5000times
10	Breaking Times at Full Load				200times
11	Main Circuit Resistance				less 200μΩ
12	Rated Gas Pressure(at above 20°C)				0.05MPa
13	SF6 Gas Leakage Rate Per Year				less 0. 1%
14	Degrees of Protection			Switch Enclosure	IP67
				Kiosk	IP33

I. About Product

1. APPLICATION

1.1   The Ring Main Unit is used for the secondary distribution networks.

1.2   The ring main unit is conform to the following standard specifications,

IEC Publications: 60684, 60298, 60420, 60265, 60129, 60056, 60529.

2. SERVICE CONDITIONS

2.1   The ambient temperature does not exceed the range of -40°C~+50°C. Its average value measured over a period of 24 hours does not exceed 40°C.

2.2   The altitude does not exceed 4000M.

2.3   Relative humidity range from 0~100%.

2.4   Earthquake Richter scale: Not over than 8.

2.5   Condensation, heavy pollution and corrosion are all considered while designing.

3. TYPES:

Our standard Ring Main Units are un-extendible type. According customer’s specific requirements, we also can supply the extendible type. Our standard Ring Main Units can be supplied in 25 different configurations suitable for most switching applications in 12/24 kV distribution networks. They represent nearly a complete solution for 12/24 kV secondary distribution networks.

C: Loadbreak Switch; F: Switch and Fuse combination; V: Vacuum Circuit Breaker

CC/CV

CCC/FCC/CCF/CFC/ VCC /CCV/CVC

CCCC/CCCF/CCFF/CFFC/CCCV/CCVV/CVVC

CCCCC/CCCCF/CCCFF/CCFFF/CCCCV/CCCVV/CCVVV

CCCCCC

CCCCCCC

4. MAIN ACCESSOREIS:

1) BAROMETER ( GAS LEAKAGE INDICATION): Barometer is provided to indicate the sufficient and in-sufficient gas pressure. 

2) VOLTAGE CONTROL DEVICE AND PHASE COMPARISION TESTING: A voltage control device is installed for each circuit to show if the cable is energized or not. Socks for phase comparison testing are provided.

3) SHORT CIRCUIT INDICATORS: Short circuit indicators can be installed which can be manually re-settable.      

                             

4)COUNTER: Counter is installed to show the operating times.

5) OPENING HANDLE: One common operating handle for High Voltage and Earthing switches is provided for each set of Ring Main Unit.

6) PRESSURE RELEASING DEVICE: Each set of Ring Main Unit will be installed a pressure releasing device for releasing the pressure when the inner pressure overpasses the standard.

7) LOW PRESSURE ALARMING DEVICE: With the device, the alarming sound will be given when the pressure lower than the standard.

8) PAD LOCKING: Provision is made for padlocking the load break switches and the earthing switches in either OPEN OR CLOSED position, a parking position for the padlock is provided for each padlocking device.

II.  About Factory

1) We have 8 years experience of manufacturing SF6 Ring Main Unit, KYLIN Ring Main Unit is a name that stand for quality and durability.

2))This type and design products are sold well in South Korea, India, Pakistan and Vietnam. Other countries in South America, South-east Asia, Middle East and Africa are our target markets.

SF6 Gas Insulated Ring Main Unit