MBS
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D.C. Switchgear Range Type MBS

D.C. SWITCHGEAR RANGE / TYPE MBS A domain of expertise With a complete range of equipment and a leading expertise in DC traction power substations, Sécheron SA is a world leader and major partner for electrification of DC traction networks. Covering all activities from calculation, network design and engineering, up to the production of the DC Systems, Sécheron SA can offer customers and partners tailor made solutions based on a modular concept and standard products. Our equipment is developed on world leading technology and proven worldwide design and acceptance. In-house technology covers...

HSCB D.C. Switchgear: Characteristics Symbol Cubicle type Rated service current Rated voltage Circuit breaker type Power frequency withstand voltage Active part to earth (50 Hz, 1min) Main busbar Busbar rating: connection Rated short-circuit current Protection degree (general/roof) Ambient temperature range Typical weight Dimensions (WxDxH) **IP42: option. For further characteristic: refer to the data sheet for the individual circuit-breaker type. Designed according to standard specifications EN50123 and IEC61992. HSCB D.C. Switchgear: Composition Unique feature: Key components of the...

D.C. SWITCHGEAR RANGE / TYPE MBS Safety features / functioning The withdrawable high speed circuit breaker trolley has four positions: • Service position • Test position • Disconnected position • Removed position When the trolley is in service position, the front high voltage door is locked and it is not possible to access the trolley. When high voltage is applied to the breaker, it must be open before the trolley can be moved from service to test position. The trolley is moved from one position to another either manually by an external handle or electrically via the SEPCOS touch screen...

Disconnecting D.C. Switchgear: Description Disconnector cubicles are applied for incoming DS, negative DS or coupling DS. The system contains two compartments: • High voltage compartment • Low-voltage compartment Each compartment has a separate front door and can be mounted against the wall. Cable connection is possible from the bottom or top. Disconnectors are rated 2000A, 4000A, 6300A and 8000A. Incoming DS Cubicle: Incoming DS cubicles isolate the positive high voltage output transformer/rectifier group from the feeder DC distribution bus. Disconnectors may have single or double poles....

D.C. SWITCHGEAR RANGE / TYPE MBS Protection Relay SEPCOS is a protection and control unit that is applied to the outgoing feeder or the incoming HSCB cubicles in the DC traction substation. Main features: • Modular PLC concept, PLC programming, IEC61131 normalized programming. • Fully approved in railway substation environment IEC60255-22. • High noise immunity thanks to sampling rate at 40 microseconds and 16 bits A-D converter. Protection functions: • All typical protection functions (e.g. Function DDL +/-, Imax +/-, etc.). Control functions: • HSCB ON / OFF control with electric or...

MBS line up Complete DC switchgear can be provided in line with MBS cubicles as shown below. HSCB Cubicles: Applications 1. Line feeder MAIN BUSBAR MAIN BUSBAR MAIN BUSBAR 2. Line feeder with isolating switch Line Test earthing switch 5. Line feeder with Line Test 3. Line feeder with 6. Line feeder with bypass and isolating switch MAIN BUSBAR MAIN BUSBAR MAIN BUSBAR BY-PASS BUSBAR BY-PASS BUSBAR Installation of lightning arrester for outgoing feeder is available upon request. 7

Approved type test reports available. Main features related to MBS 500 breaker panel Rated service current (lNe) 4000 A Rated making & breaking capacity ONSS/INSS) 177/125 kA Rated track time constant (TNC) 100 ms Rated service current (lNe) 4000 A Rated making & breaking capacity ONSS/INSS) 113/80 kA Rated track time constant (TNc) 31.5 ms Main features related to MBS 800 breaker panel Rated service current (lNe) 8000 A Rated making & breaking capacity ONSS/INSS) 190/134 kA Rated track time constant (TNC) 100 ms Rated service current (lNe) 4000 A Rated making & breaking capacity ONSS/INSS)...