GLX24 series SF6 Insulated RMU
- Description
- Specification
- Features
- Size
- Catalogue
GLX24 series Ring Main Unit is an extensible, SF6 insulated switchgear, with rated voltage of 12&24 kV. All its HV live parts are contained in an air-tight gas tank, which is made from stainless steel of 3mm. The whole switching assembly is SF6 insulated, and free from any external influence, ensuring it great reliability of service and maintenance free. By plug-in type busbar extension, GLX24 series RMU can be of free combination and full modularization. The busbar extension has passed type test for power and thermal stability, and is fully insulated and shielded, exhibiting high reliability and safety. GLX24 series Ring Main unit is suitable for all MV network up to 24 kV, all compact power stations, power distribution substations in all important industries, such as petrol-chemical industry, metallurgical and mining industries, and all transformer substations and wind power system.
12kV Technical Data
|
Description |
Unit |
LBS unit |
Switch-fuse unit |
VCB unit |
Busbar subsection unit |
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|
Rated voltage |
kV |
12 |
12 |
12 |
12 |
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|
Power frequency withstand voltage (1min) |
Phase to phase/earth |
kV |
42 |
42 |
42 |
42 |
|
|
Across the isolating distance |
kV |
48 |
48 |
48 |
48 |
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|
Impulse withstand voltage |
Phase to phase/earth |
kV |
75, (95)* |
75, (95)* |
75, (95)* |
75, (95)* |
|
|
Across the isolating distance |
kV |
85, (110)* |
85, (110)* |
85, (110)* |
85, (110)* |
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|
Rated frequency |
Hz |
50,60 |
50,60 |
50,60 |
50,60 |
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|
Rated current |
A |
630 |
① |
630 |
630 |
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|
Rated short circuit breaking current |
kA |
|
② |
20,(25)* |
|
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|
Rated short time withstand current |
kA/s |
20/3, (20/4, 25/1)* |
|
20/3, (20/4, 25/3)* |
20/3, (20/4, 25/1)* |
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|
Rated peak withstand current |
kA |
50, (63)* |
|
50, (63)* |
50, (63)* |
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|
Rated short circuit making current |
kA |
50, (63)* |
② |
50, (63)* |
50, (63)* |
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|
Rated transfer current |
A |
|
1800 |
|
|
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|
Rated active load breaking current |
A |
630 |
|
|
630 |
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|
Rated closed loop breaking current |
A |
630 |
|
|
630 |
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|
5% rated active load breaking current |
A |
31.5 |
|
|
31.5 |
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|
Rated operating sequence |
|
|
|
O-0.3s-CO- 180s-CO |
|
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|
Mechanical lifetime |
Ops. |
5000 |
5000 |
10000 |
5000 |
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|
Electrical lifetime |
|
E3 |
|
E2 |
E3 |
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|
Thickness of stainless steel |
mm |
3.0 |
|||||
|
Rated SF6 pressure |
kPa |
30 (at 20℃, 101.3kPa) |
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|
Annual leakage rate |
＜0.02% |
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|
Water treatment test |
12kV 24 hours (at 30 kPa under the water) |
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|
Internal arc test |
20kA 1s |
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Protection degree |
Gas tank |
IP 67 |
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|
Fuse holder |
IP 67 |
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|
RMU enclosure |
IP 4X |
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|
|
|
|
|
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Notes:
① Rated current of switch-fuse unit depends on the rating of fuse: ≤125A
② Rated short circuit breaking/making current of switch-fuse unit depends on the rating of fuse
* Values in brackets are for special requirements, please contact manufacturer or supplier for more information
24kV Technical Data
|
Description |
Unit |
LBS unit |
Switch-fuse unit |
VCB unit |
Busbar subsection unit |
|
|
Rated voltage |
kV |
24 |
24 |
24 |
24 |
|
|
Power frequency withstand voltage (1min) |
Phase to phase/earth |
kV |
50, (65)* |
50, (65)* |
50, (65)* |
50, (65)* |
|
Across the isolating distance |
kV |
64, (79)* |
64, (79)* |
64, (79)* |
64, (79)* |
|
|
Impulse withstand voltage |
Phase to phase/earth |
kV |
95, (125)* |
95, (125)* |
95, (125)* |
95, (125)* |
|
Across the isolating distance |
kV |
110, (145)* |
110, (145)* |
110, (145)* |
110, (145)* |
|
|
Rated frequency |
Hz |
50, 60 |
50, 60 |
50, 60 |
50, 60 |
|
|
Rated current |
A |
630 |
① |
630 |
630 |
|
|
Rated short circuit breaking current |
kA |
|
② |
20 |
|
|
|
Rated short time withstand current |
kA/s |
20/3, (20/4)* |
|
20/3, (20/4)* |
20/3, (20/4)* |
|
|
Rated peak withstand current |
kA |
50 |
|
50 |
50 |
|
|
Rated short circuit making current |
kA |
50 |
② |
50 |
50 |
|
|
Rated transfer current |
A |
|
1400 |
|
|
|
|
Rated active load breaking current |
A |
630 |
|
|
630 |
|
|
Rated closed loop breaking current |
A |
630 |
|
|
630 |
|
|
5% rated active load breaking current |
A |
31.5 |
|
|
31.5 |
|
|
Rated operating sequence |
|
|
|
O-0.3s-CO- 180s-CO |
|
|
|
Mechanical lifetime |
Ops. |
5000 |
5000 |
10000 |
5000 |
|
|
Electrical lifetime |
|
E3 |
|
E2 |
E3 |
|
|
Thickness of stainless steel |
mm |
3.0 |
||||
|
Rated SF6 pressure |
kPa |
30 (at 20℃, 101.3kPa) |
||||
|
Annual leakage rate |
＜0.02% |
|||||
|
Water treatment test |
24kV 24 hours (at 30 kPa under water) |
|||||
|
Internal are test |
20kA 1s |
|||||
|
Protection degree |
Gas tank |
IP 67 |
||||
|
Fuse holder |
IP 67 |
|||||
|
RMU enclosure |
IP 4X |
|||||
Notes:
① Rated current of switch-fuse unit depends on the rating of fuse: ≤100A
② Rated short circuit breaking/making current of switch-fuse unit depends on the rating of fuse
* Values in brackets are for special requirements, please contact manufacturer or supplier for more information
Advanced process technique for gas tank
The digital-controlled laser cutting and punching system and three-dimension and five-axis laser welding system imported from Germany with ensure the gas tightness and uniformity of all gas tanks.
The fully automatic and integral helium leak detection system, made by SEILER Vakuumtechnik GmbH, through detecting of Helium leakage by mass spectrograph, brings gas leakage rate per year down to less than 0.02%, ensuring the life span of gas tank of over 30 years.
Advanced process technique for parts
All epoxy resin insulated parts, including insulated poles, are manufactured by fully-automatic and digitally controlled epoxy resin vacuum mixing/pressure gelatinizing system from Hedrich (Germany)
The busbar connector, cable connector, end-plug and other silicone rubber insulated parts are manufactured by fully-automatic and digitally controlled silicone rubber mixing/pressure gelatinizing system from VOGEL(Switzerland).
Excellent solutions for products
With small and compact structure, the basic functional units K, T, V, B and C have uniform dimension: 350*800*1380 mm (width*depth*height)
Complete solutions:
Single version: load break switch unit, switch-fuse unit, vacuum circuit breaker unit, busbar subsection unit, cable unit, metering unit, etc.
Block version can be made up of two, three, four, five or six functional units.
Single units and block version can be connected by busbar connectors flexibly.
Strong adaptability to the environment
The primary conductive system is fully sealed in the SF6 gas tank and will not be influenced by the outside environment, independent of the impact of dew, dust, salt fog, etc. Therefore, GLX24 series can be applied at various severe service conditions.
