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 8DH10

Maintenance-free for lifetime

Overview
Technical Data
Front and side view

Up to 17.5 kV, 25 kA, up to 1250 A busbar, 630 A feeder
Up to 24 kV, 20 kA, up to 1250 A busbar, 630 A feeder
Metal-enclosed
Single-busbar
Gas-insulated
Sealed
Factory-assembled, type-tested switchgear according IEC 62 271-200
Customer's Benefit:
- Environmental Independence
- Compactness
- Maintenance-free Design
- Personal Safety
- Security of Operation, Reliability
- Economy, Ecology

Rated voltage	kV	7.2	12	15	17.5	24
Rated frequency	Hz	50/60	50/60	50/60	50/60	50/60
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 peak withstand current	kA	≤ 63	≤ 63	≤ 63	≤ 63	≤ 50
Rated short-circuit making current	kA	≤ 63	≤ 63	≤ 63	≤ 63	≤ 50
Rated short-time withstand current, 1 s	kA	≤ 25	≤ 25	≤ 25	≤ 25	≤ 25
Rated short-time withstand current, 3 s	kA	≤ 20	≤ 20	≤ 20	≤ 20	≤ 20
Rated short-circuit breaking current	kA	≤ 25	≤ 25	≤ 25	≤ 25	≤ 20
Rated normal current of busbar	A	≤ 630 1250*	≤ 630 1250*	≤ 630 1250*	≤ 630 1250*	≤ 630 1250*
Rated normal current of feeder	A	≤ 630 200	≤ 630 200	≤ 630 200	≤ 630 200	≤ 630 200
Degree of protection - Primary part - Secondary part		IP65 IP3XD	IP65 IP3XD	IP65 IP3XD	IP65 IP3XD	IP65 IP3XD

Dimensions
- Width single panels**** gas-insulated
- Width metering panels air-insulated
- Depth
- Height
- Height
(with low-voltage compartment 600 mm)

mm
mm
mm
mm
mm

350, 500
600, 850
775
1400
2000

*   42 kV / 95 kV according to some national requirements
**    Standard
***   Option: 1250 mm, not for panel Type "ME1"
**** width for panel blocks (mm): 700, 1050, 1400, 1750, 1000, 1500

Design and construction
Partition Class:	PM (metallic partition)
Loss of service continuity category panels: - with HV HRC fuses - without HV HRC fuses	LSC 2A LSC 2B
Accessibility of Compartments (enclosure): - Busbar compartment: - Switching-device compartment: - Low-voltage compartment: - Cable compartment 2) Panel without HV HRC fuses Panel with HV HRC fuses (TR...) Panel type K Panel without cable connection (e.g. type RK-U, LS1-U)	Access option tool-based non accessible tool-based Interlock-controlled Interlock-controlled tool-based Interlock-controlled and tool-based

Internal arc classification
Designation of internal arc classification IAC for - Wall-standing arrangement - Free-standing arrangement	IAC A FL 21 kA, 1 s IAC A FLR 21 kA, 1 s
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