Gas-insulated switchgear 8DJH

Maintenance-free for lifetime

Description

8DJH
8DJH

  • Up to 24 kV

  • Up to 25 kA

  • Up to 630 A

  • Single busbar

  • Type-tested

  • Metal-enclosed

  • Climate-independent

  • Maintenance-free

  • Individual panels and block versions

  • No gas work at site

  • Fast and easy to install


Technical Data

Rated voltage

kV

7.2

12

15

17.5

24

Rated short-duration power-frequency withstand voltage

kV

20

28

36

38

50

Rated lightning impulse
withstand voltage

kV

60

75

95

95

125

Rated frequency

Hz

50/60

50/60

50/60

50/60

50/60

Rated normal current of busbar

A

≤ 630

≤ 630

≤ 630

≤ 630

≤ 630

Rated normal current of feeder

A

≤ 630

≤ 630

≤ 630

≤ 630

≤ 630

Rated short-time withstand current, 1 s

kA

≤ 25

≤ 25

≤ 25

≤ 25

≤ 20

Rated short-time withstand current, 3 s

kA

≤ 20

≤ 20

≤ 20

≤ 20

≤ 20

Rated peak withstand current kA

kA

≤ 63

≤ 63

≤ 63

≤ 63

≤ 50

Rated short-circuit making current

kA

≤ 63

≤ 63

≤ 63

≤ 63

≤ 50

Dimensions

Dimensions of panel types and panel blocks - see catalogue right hand side.

 

Design and construction

Partition Class:

PM (metallic partition)

Loss of service continuity category for
panels or panel blocks:
- Panels with disconnector (R, T, L)
- Panels without disconnector (K, M)

 
 
LSC 2
LSC 1

Accessibility of Compartments (enclosure):
- Busbar compartment:
- Switching-device compartment:
- Low-voltage compartment (option):
- Cable compartment
for panels or panel blocks
with HV HRC fuses (T)
without HV HRC fuses (R, L, ...)
only cable feeder (K)
Metering panels
(air-insulated) (M)

 
Non-accessible
Non-accessible
Tool-based
 
 
Interlock-controlled
Interlock-controlled
Tool-based
Tool-based

Internal arc classification (option)

Designation of the internal
arc classification, IAC
IAC class for
- Wall-standing arrangement
- Free-standing arrangement

Rated voltage 7.2 kV to 24 kV
 
 
IAC A FL
IAC A FLR

Type of accessibility A



- F
- L
- R

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

Arc test current

Up to 21 kA

Arc test current

1 s


Front and side view

8DJH Circuit-breaker panel Type L

 

Please see further details in catalogue (Catalogue can be found under Download).

Approval

Selective Approval

Gost, Russland
Approval 03/2010

electrica, Bukarest
Approval 02/2010

JEN Instytut Energetyki, Warschau
Approval 09/2013

Vattenfall, Berlin und Hamburg
Approval 09/2009

envia, Halle
Approval 02/2011

Shell, Den Haag
Approval 02/2013


References

Selective References

Customer

CEZ Distribuce, a.s.

Siemens Ltd.

Geise Elektrotechnik GmbH

EWE Netz GmbH

Beton- und Energietechnik Heinrich Gräper GmbH & Co. KG

E.ON edis AG

E.ON Hanse AG

ESB Dublin Supply Stores

JP Elektroprivreda BiH

Stadtwerke Düsseldorf AG

ENERCON GmbH

Elektroprivreda Crne Gore a.d. Niks

Dipl.-Ing. H. Vrielmann GmbH

Wilk Elektronik SA

KISH Water and Power Authority

Elektrotechnik Eimers GmbH

Centralschweizerische Kraftwerke AG

ENSO Energie Sachsen Ost AG

SSE Stredoslovenská energetika, a.s.

SEAS-NVE Holding A/S

OVAG Oberhessische Versorgungsbetriebe AG

Schacht GmbH Hoch- und Niederspannung

Intego A/S

Creos Luxembourg S.A.

Isoblock Schaltanlagen GmbH & Co. KG

Thy-Mors Energi A/S

UESA Polska Sp. z o.o.

Stadtwerke Lübeck GmbH

Vattenfall Europe AG

SÜC Energie und H2O GmbH

SGB Compactstationen in Neumark


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


8DJH with Low-Power Current and Voltage Sensors

The medium-voltage switchgear 8DJH offers the possibility to install intelligent short-circuit and earth-fault indicators type SICAM FCM or also time-overcurrent protection relays SIPROTEC 7SJ81 for connection to low-power current and voltage sensors. Thanks to the use of low-power voltage sensors instead of conventional voltage transformers, the following benefits can be identified:
Cost savings: Low-power voltage sensors can be mounted in 310 mm ring-main panels or 430 mm circuit-breaker panels, which in turn are available in block-type con­struction (multiple panel functions possible in one common gas vessel).
Space savings: The total switchgear width and therefore the floor area required is reduced.
Accuracy:Constantly high measuring accuracy despite less use of material