Gas-insulated switchgear for secondary distribution systems

Cleverly switched – Gas-insulated switchgear: Compact, maintenance-free and climate-independent

General Information

Description

Switchgear for the secondary distribution level

For the distribution of electrical energy, Siemens offers various gas-insulated switchgear types. In compact substations or small distribution substations, such switchgear contributes to guaranteeing uninterrupted power supply through to households and small industries. In all these applications, gas-insulated switchgear technology from Siemens provides exceptional advantages in respect of climatic independence, personal safety and maintenance-free design. For the power supply companies, this offers the high benefit of maximum supply reliability in their networks and thus, satisfied customers.

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Product Information

Gas-insulated switchgear 8DJH

Maintenance-free for lifetime

Overview
Technical Data
Front and side view

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

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	≤ 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 (partition of metal)
Loss of service continuity category for panels or panel blocks: with HV HRC fuses (T, H) without HV HRC fuses (R, L, ...)	LSC 2A LSC 2B
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
Test duration	1 s