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GLX24 series SF6 Insulated RMU

  • GLX24 series SF6 Insulated RMU-1
49永利彩票
官方永利57338.com
  • Description
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  • Features
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  • 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

Rated voltage

kV

12

12

12

12

Power frequency withstand voltage (1min)

Phase to phase/earth

kV

42

42

42

42

Across the isolating distance

kV

48

48

48

48

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)*

Rated frequency

Hz

50,60

50,60

50,60

50,60

Rated current

A

630

630

630

Rated short circuit breaking current

kA

 

20,(25)*

 

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)*

Rated peak withstand current

kA

50, (63)*

 

50, (63)*

50, (63)*

Rated short circuit making current

kA

50, (63)*

50, (63)*

50, (63)*

Rated transfer current

A

 

1800

 

 

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

12kV  24 hours (at 30 kPa under the water)

Internal arc 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: ≤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

630

630

Rated short circuit breaking current

kA

 

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

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.


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