Fully Enclosed Full Insulated Gas Filled Ring Main Unit

Keeya, a prominent supplier, presents the Fully Enclosed Full Insulated Gas Filled Ring Main Unit, combining cutting-edge technology with cost-effective solutions. Our commitment to providing high-quality products is matched by our dedication to ensuring competitive prices. Keeya stands as your reliable source for efficient and low-cost solutions in the realm of fully enclosed, fully insulated gas-filled ring main units. Partner with us for top-notch products that align with your budgetary considerations.

RM6-40.5 fully enclosed full insulated ges filed ring main unit is a new generaition of switchgear produced by our company as a complete set of indoor 12-40.5kV three-phase AC 5OHz equipment for recewing and distributing electric energy.It is mainly used for power transformation and transmission of medium voltage power systems such as various power plants,substations,industrial and mining enterprises,subways,civil and commercial buildings for control,protection and monitoring.It is charactenzed by reliable performance,strong adaptabllty and small size.

RM6-40.5

RM6-40.5 Fully enclosed full insulated gas filled ring main unit

Compliant standards

● GB 3906 Alternating-current metal-enclosed switchgear and control gear for rated voltages above 3.6kV and up to and including 40.5kV

● DL/T 404 Indoor AC high voltage switchgear panel

● IEC 62271-200:2003 AC metal-enclosed switchgear and control gear for rated voltages above 1kV and up to and including 52kV 1016001/003-0000-00 Material Procurement Standard of State Grid Corporation of China for 12kV,24kV

● 1016001/003-0000-00 Materials Procurement Standard of State Grid Corporation of China for 12KV,24kV 40.5kV High Voltage Switchgear 1016001/003-0000-00 General Technical Specifications

Service condition 

● Ambient temperature:the maximum temperature is 40℃,the minimum temperature is -25℃,and the average value measured within 24h does not exceed 35℃;

● Relative humidity:the average value of relative humidity measured within 24h shall not exceed 95%,and the average value of monthly relative humidity shall not exceed 90%.

● Condensation may occur when the temperature changes rapidly during high humidity.The average value of water vapor pressure measured within 24h shall not exceed 2.2kPa,and the average value of monthly water vapor pressure shall not exceed 1.8kPa;

● Altitude:no more than 1000m;

● Seismic intensity:no more than 8 degrees;

● The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV;

● The surrounding air is not obviously polluted by dust,smoke,corrosive and combustible gases,steam or salt mist.

Note:When the use conditions exceed the above provisions,the solution can be determined through consultation with the user. RM6-40.5 RM6-40.5 Fully enclosed full insulated gas filled ring main unit 

Technical parameter

No.	Item			Unit	Technical parameter
1	Rated voltage			kV	12	40.5
2	Rated current			A	1250~3150	1250~2500
3	Rated frequency			Hz	50
4	Rated short-time withstand current			k/Vs	25、31.5
5	Rated peak withstand current			kA	63、80
6	Rated short-circuit current duration			S	4
7	Rated short-circuit breaking current			kA	25、31.5
8	Rated short-circuit making current			kA	63、80
9	Duration of arcing			S	0.5
10	Mechanical life	Circuit breaker		time	2000	10000
		Isolating switch			3000
		Grounding switch			3000
11	Electrical life of circuit breaker			time	30
12	Rated filled gas pressure(gauge pressure at 20℃)			MPa	0.05
13	Minimum functional pressure(gauge pressure at 20℃)				0.03
14	SAnnual leakage rate of SF6 gas				≤0.5%
15	Rated insulation level	Rated power frequency withstand voltage (1min)(effective)	Phase to phase,phase to ground	kV	42	95
			isolating distance,vacuum opening		48	118
		Rated lightning impulse withstand voltage (peak)	Phase to phase,phase to ground	kV	75	185
			isolating distance, vacuum opening		85	215
16	Auxiliary control circuit	Rated voltage		V	12	40.5
		1min power frequency withstand voltage			1250~3150	1250~2500
17	Cabinet protection grade	Cabinet housing			50
		Gas fulled compartment			25、31.5
18	Category of loss of operation continuity			A	63、80
19	Temperature rise test				4
20	Main circuit resistance	1250		UΩ	25、31.5
		2000			年
		2500			0.5
		3150			2000	10000
21	Partial discharge	Test voltage		kV	3000
		Single insulating element		pC	3000
		Complete set			30
22	Service life				0.05

RM6-40.5

RM6-40.5 Fully enclosed full insulated gas filled ring main unit

Note:

1.The rated short-circuit breaking current of 40.5kV/2000A is 31.5kA; rated short-circuit breaking current of 12kV/3150A is 31.5kA;

2.The parameters of rated peak withstand current and rated short-time withstand current of current transformer shall be assessed separately;

3.The circuit resistance refers to the measured value measured from the outgoing line of the bus coupler socket (including the bus coupler)to the outgoing line side of the cable socket (including the current device).When the bus coupler and the current device are not included,the value in the table should be subtracted by 20.

Outline and structure diagram of switchgear

1.Small bus room

2.Instrument room

3.Gas-filled compartment of main bus

4.Station disconnector

5.Operating mechanism room

6.Circuit breaker

7.Gas-filled compartment of circuit breaker

8.Cable room

9.Current transformer

10.Cable

11.CM-35 lightning arrester

12.Pressure release channel

13.Cable plug

14.Cable socket

15.Test socket plug

16.Test socket

17.Branch bus

18.Pressure relief device

19.Main bus

20.Bus coupler socket

21.Bus coupler

Note:

a(cabinet width): 600mm,800mm;

b(cabinet depth): 1420 in depth for 12kV; 1620 in depth for 40.5kV.