Gas-insulated switchgear 8DJH Compact

Maximum Functionality on Minimum Space

Description

8DJH Compact
8DJH Compact

  • Up to 17,5 kV    Up to 24 kV

  • Up to 25 kA       Up to 20 kA

  • Up to 630 A       Up to 630 A

  • Single busbar

  • Type-tested

  • Metal-enclosed

  • Climate-independent

  • Maintenance-free

  • Block versions

  • No gas work at site

  • Fast and easy to install


8DJH Compact, the youngest member of the 8DJH family, sets new standards with regard to the compactness of medium-voltage switchgear. Thanks to its compact dimensions, it can be easily installed in new local transformer substations, and is the ideal retrofit switchgear for existing compact substations. Offering the proven functionalities of the 8DJH family, the switchgear can be  integrated in Smart Grids if equipped with the corresponding options.

Your advantages at a glance

  • High cost-efficiency by perfect utilization of existing mounting space. As a result, additional space for further systems in the compact substation

  • Protection of investment by future-proof technology: Integration in Smart Grids is possible

  • Cost-efficient retrofitting of compact substations

  • High personal safety and operational reliability by internal arcing test in accordance with the latest IEC/EN 62271-200 standard


Technical Data

Rated voltage Ur

kV

7.2

12

15

17.5

24

Rated short-duration power-frequency withstand voltage Ud

- phase-to-phase, phase-to-earth,
  open contact gap
- across the isolating distance



kV

kV



20

23



28

32



36

39



38

45



50

60

Rated lightning impulse withstand voltage Up

- phase-to-phase, phase-to-earth,
  open contact gap
- across the isolating distance



kV

kV



60

70



75

85



95

110



95

110



125

145

Rated frequency fr

Hz

50/60

50/60

50/60

50/60

50/60

Rated normal current Ir for ring-main feeders
Rated normal current Ir for busbar
Rated normal current Ir for transformer feeders

A

A
A

400

630
200



630
200

or

630
200



630
200

630

630
200

Rated short-time withstand current Ik,
1s, 50 Hz

Rated short-time withstand current Ik,
3s, 50 Hz (design option)

Rated peak withstand current Ip , 50 Hz

Rated short-circuit making current Ima,
50 Hz

up to kA
up to kA
up to kA
up to kA

25

20

63

63

25

20

63

63

25

20

63

63

25

20

63

63

20

20

50

50

Rated short-time withstand current Ik,
1s, 60 Hz
Rated short-time withstand current Ik,
3s, 60 Hz (design option)
Rated peak withstand current Ip 60 Hz

Rated short-circuit making current Ima,
60 Hz

up to
kA
up to
kA
up to
kA
up to
kA

21

21

55

55

21

21

55

55

21

21

55

55

21

21

55

55

20

20

52

52

Dimensions

Width 1)

mm

Width 2)

mm

Depth

mm

Height

mm

2 ring-main feeders,
1 transformer feeder

700

620

775

1,400

1,700

3 ring-main feeders,
1 transformer feeder

1,010

930

775

1,400

1,700

4 ring-main feeders,
2 transformer feeders

1,400

1,240

775

1,400

1,700

Width 1): design with IAC A FLR
Width 2): design with IAC A F

Design and construction

Partition class

PM (partition of metal)

Loss of service continuity category

LSC 2

Accessibility to compartments (enclosure) 
- Busbar compartment
- Switching-device compartment
- Cable compartment

 
Non-accessible
Non-accessible 
Interlock-controlled

Internal arc classification

Designation of the internal
arc classification IAC


IAC classification

Rated voltage 7.2 kV to 24 kV 
  

IAC A FLR

IAC A F (tested with wall distance
at the rear ≥3m; use
in substations only in connection
with internal arcing test according
to IEC 62271-202)

Type of accessibility A



- F
- L
- R

Switchgear in closed electrical
service location, access "for
authorized personnel only"
(according to IEC/EN 62271-200)
Front
Lateral
Rear

Arc test current

up to 21 kA

Test duration

1 s


Front and side view

8DJH Compact Scheme RRT 1400 mm

 

8DJH Compact Scheme RRT 1700 mm

Please see further details in brochure (Brochure can be found under Download).

Intelligent transformer substations

Optimum solution concept for Intelligent transformer substations

Medium-voltage and low-voltage systems change due to the increasing integration of decentralized renewable power supplies and the emerging electromobility trend in the public transport sector.
While the increasing need for load capacity can be provided by means of system expansion, the effects due to alternating direction of power flow, load fluctuations and voltage range limitation can only be handled with intelligent solutions.

Intelligent transformer substations from Siemens offer the optimum solution concept:

  • Compact, communicative medium-voltage switchgear

  • Distribution transformer, regulated on the low voltage side

  • Integrated telecontrol and automation solution