DC Switchgear
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ENhanced TEChnology www.entecene.co.kr DC Switchgear ETGR 21 & 22 Series Ver. 3.0

DC Switchgear for Railway System Future would be derived by ENTEC s advanced technology and endless study from DC Switchgear in main core of Metro Power System. DC Switchgear is the Major Equipment for Safe Operation in DC Railway System. ETGR 21 & 22 series have been designed for DC Railway Substation, and also designed to be affordable in heavy conditions. ETGR 21 & 22 are optimized in order to be installed in any place with easy handling. And the user’ safety is maximized by restrictedly distinguishing s all components upon adequate Insulation Voltage level. HSCB (High Speed Circuit...

Characteristics Current Interruption Outstanding interruption of small current(0~500A) and Mid-low current (500~3,000A). All range of small current, load current, fault current upto rated interrupting capacity are able to be quickly and safely managed without having any blind current range at rated voltage. High quality DC high Speed Circuit Breaker(HSCB) and DC Disconnector application High quality of HSCB and DC Disconnector are evidenced by completing International authorized Laboratory test according to International standards. Digital Protection relay application Fast and precise...

Product construction 9 6 3 7 10 5 8 1 4 2 DC HSCB(Incl. truck) Fast fault current clearing in a fault occasion. Several Interlock funtions are applied in Circuit Breaker. Surge Arrester Surge (Lightening Surge, Inductive surge) prenvention. FaultselectiveRelay(50F) Determine faults and operate Circuit Breaker (Digital type). 64HR (Current type) Monitoring between DC live bus and enclosure, Protect earth current. DC Power meter (kWh) Power consumption calculation. DC Disconnector Power line close and open when no load. DC CT Current Sensing. DC PT Primary voltage sensing. 4 ENhanced...

Rating and Operation Ratings Model Nominal Voltage Rated Voltage Insulation Voltage Rated interrupting over voltage Rated current Rated making and breaking capacity Operation duty di/dt (Current rising rate vs time) Mechanical operation Power frequency withstand voltag (60Hz,1min.) Rated operation and control voltage Over current Release Pick-up Max. Ambient Temp / Avg. Temp. Altitude Size [Width x Depth x Height mm] Weight [kg] IP protection (IEC 529) Applied standard ETGR 21 ETGR 22 DC 750V DC 900V DC 1,800V DC 1,500V DC 1,800V DC 3,000V 1.5 ~ 2 x rated voltage 2,000A / 3,000A / 4,000A...

Standard type and Test Graph Standard type Panel Type 76I 76D 45 82 80 Rectifier Feeder Spare Tie post Neg. DS Width [mm] 600 600 600 600 1,500 Other application available upon user request. Test Graph DC HSCB CO Test Oscillogram (Interruption, 110 [kA]) Disconnector Test Oscillogram (Short time current, 106.5 [kA, peak]) ENhanced TEChnology 7

DC High Speed Circuit Breaker (DC HSCB) DC HSCB is used to manage DC Power Feeding line and interrupt a fault current. EDB Series is designed with the most advanced technology in order to protect Railway system from abnormal phenomenon of Power feeding system. Under high frequent switching and heavy load condition, EDB Series DC HSCB is the most reliable. EDB Series has rated voltage of DC 900V for light weight railway system (EDB-09) and rated voltage of DC 1800V for Urban railway system. Ratings Model Nominal voltage Rated voltage Rated current Rated interrupting over voltage Operation...

ETCPU200 Overview DC protection relay ETCPU200 includes Fault Selective Relay(50F), Overcurrent Relay(76D), Voltage Relay(45,80), Ground Fault Relay(64P) and Reclosing Relay(82) in order to protect Metro DC system. For remote control and monitoring DNP3.0, IEC60870, MODBUS and etc. protocols are used. 54F LINE FEEDER ETCPU200 Panel HMI(Human Machine Interface) Panel Features ETCPU200 Consist of DC protection relay(ETCPU200) and Human Machine Interface(ETCPU200HMI). Monitoring function - Current, Voltage, Delta-I, di/dt etc. 4 Analog input port - Feeder current, Voltage, Rectifier voltage,...

DC Disconnector DC Disconnector is used for no load switching in DC feeder system. ET-DS design is compact and optimized in order to apply DC panel and Other applications. In addition, sufficient insulation capacity and electric current capacity increase the product safety. Fast operation time accommodate the user convenience. Ratings Model ET-DS Nominal voltage Rated voltage Rated current Rated short time current Operation voltage Operation method Mechanical Operation Operation time Insulation Phase-Phase Phase-Ground voltage Control Circuit Size[Width x Depth x Height] Weight Applied...