Incoming or Outgoing, Fixed or Withdrawable Single Isolation Circuit Breaker up to 24 kV Introduction Lv plugin LVpigin DM1-A & DMT-W ate parts of SM product range and called 2s single ©—-_DM1-A_¥ _DMH-W section isolation circuit breaker. This modular unit ie used for tne MV section of MV/LY substation in secondary cistrbution system up to 24 KV. Application : DMt-A\is single isolation circuit breaker unit with fixed breaker, normally used as incoming or outgoing cubicle. DM1-W is withdrawable single isolation circult breaker unit and itis also used for incoming or outgoing feeder. This DM1-A or DM1-W is normally installed together in the system with other parts of SM6 product range such as IM, IMC, QM, QMC, CM, etc, in accordance with the design of a distribution system, Characteristi Rated maximum Voltage (kV) 12 24 Rated voltage (kVrms) 72 12 175 24 Rated insulation level = SOHZ for 1 min (kVvems) 20 28 38 50 impulse 1.2/50 us (kVp) 60 75 95 125 Rated current load break switch (A) 400/630 400/830 = busbar (A) 630 630 = Circuit breaker (A) 400/630 400/630 Short time withstand current for rated current 400 A (kA/1S) 125 12.5 “for rated current 630-A (kA/1s) 125 125 16 16 20 20 SeptetBasic Equipment : Fluarc SF 1 circuit breaker 630A ‘Three phase busbar 630 Amp. Disconnector and earthing switch. Al ciercuit breaker operating mechanism, CS disconnector operating mechanism, Enlarge low voltage compartment. Three current transformers. Auxiliary contacts on circuit breaker. CC earthing switch operating mechanism (only for DNI-W) Downstream earthing switch, Heater 50 W, 220 V. Voltage indicators. Optional LV Control DM1-A DM +A fix LV cable connection m= DM +-A plug in LV cable connection ‘Standard Recommendation IEC standard : IEC 60694, 62271-200, 60265-1 (60255, 62271-100, 62271-102 |, 62271-1085, UTE standard NFC 18.100, 13.200, 64.130, 64.160 EDF specification : HIN 64-S-41, 64-8-43 SNIK-29-HB-O1 K-30-HB-02 Colour : White RAL 9002 Smooth Gyer RAL 7030 Smooth (option) Internal are withstand : standard: 12.5 KA 1s, IAC: A-FL enhanced: 16 KA 1s, IAC: A-FLR & IAC: A-FL in accordance with IEC 62271-200 Protection index : classes: Pl (insulating partition) loss of service continuity classes: LSC2A wm “units: IP3X Cubicle: !ko8 Electro-magnetic compatibilit relays: 4 kV withstand capacity, {as per recommendation IEC 60801.4 compartments: 1D electrical field = 40 d®8 attenuation at 100 MHz = 20 dB attenuation at 200 MHz 1D. magnetic field: 20 dB attenuation below 30 MHz. Temperatures : Optional Accessories : For Cubicle = ‘Auxiliary contacts on the disconnector. Protection using sepam 1000+ programmable electronic units. Three voltage transformers Key type interlocks oo For Circuit Breaker : Motor operating mechanism. Low energy MITOP or Undervoltage ‘opening release. 2 Opening and closing shunt trip. 1D Operation counter. oom Overall dimension DM1-A__DM1-W Wath 750mm 750mm Depth 1220 mm 1220 mm Height 1600. mm _ 4600 mm. LV compartment (n 450 mm 450 mm Approximate weight __400kg__400 kg Cable connec. height 400mm — 430mm (measure from floor) Cabling Through trenches Type of cables : single core X-section | bending radius | depth of trench (sqm) (rom) (rom) 50 370 400 70 400 430 95 440 470 120 470 500 150 500 550 185 540 670 240 590 730 Cable entry or exi Through lett or right side rear or front with conduit ‘The cubicles must be stored and installed in a dry area free from dust and with limited temperature variations, for stocking: from -40°C to 470°C, 1m for working: from -5°C to +40°C, mother temperatures, consult us,Load break switch or disconnector and earthing switch : 1 enclosure 2oover 3 operating shaft 4 fixed contact ‘5 moving contact, 6 seal contacts closed Contacts open Contacts earthed Current transformer for DM1-A and DM1-W units. ‘Type ARMS/N2F = double primary winding double secondary winding for measurement and protection, Transformer ARM3/N2F 1 characteristic according to IEC standard 60044-1 Short-time withstand current Ith (kA) Tin) 10-20 | 20-40 25-50 0-100 | 75-150 | 100-200 | 200-400 | 300-600 Ith A) 5 12.5 145 18 25 16) ts 0.85 ts measurement 5A] 7,SVAciass0,5 | 15VA class 0,5 ‘SOVA class 0.5 protection 5A 5VA5P10 5VA 5P15 7.SVASPI5 Transformer VRQ2-n__(phase-to-earth) 50 or 60 Hz characteristic according to IEC standard 60044-2 Rated voltage (eV) 24 Primary votage (kV) Hons [rss [15-2018 [20s Secondary votage (V) 1008 Thermal power (VA) 250 ‘Accuracy class _ [os Rated output for 30 30 30 single primary winding (VA) Rated output for 30-50 double primary winding (VA)SF1 circuit breaker ‘The Fluarc SF1 circuit breaker is made up of three separate poles, mounted on a structure supporting operating mechanism. Each pole- unit houses all the active elements in an insulating enclosure filled with gas to a relative pressure of 0.5 bars (500hp). This system offers maximum operating reliability ‘The enclosure filed with SF6 gas satisfies “sealed pressure system requirement and seal tightness is always ‘checked in the factory. operating safety As for switch-units, accidental over pressure ‘are eliminated by the opening of the safety membrane. breaking principle The circuit breaker is based on the SF6 gas. autocompression principle, The inherent {qualities of SFE and the soft break resulting from this technique reduce switching over- voltages. | precompression ‘When the contacts begin to open, the piston slightly compresses the SF6 gas in the pressure chamber. arcing period ‘The arc then forms between the arching contacts and the piston continues its downward movement. A small quantity of gas, directed by the insulating nozzle, is injected into the arc. ‘The cooling of the arc is thus achieved through forced convection for the interruption of low currents, however, during the interruption of high currents, thermal expansion is responsible for the transfer of the hot gasses toward the Cold parts of the pole unit. Toward current zero, the distance between the two arcing contracts is sufficient for final interruption of the current ue to the dielectric properties of the SF6 gas. sweeping over-stroke The moving parts finish their travel whereas the Cold gas injection continues unti the contacts are completely opened. PT. Schnelder Indonesia area e sungaen Bay gh D215 as MICLEAFa52004EN Filer Seeeeen Ss, tine: Sones enclosure bottom cover operating shatt main moving contact moving arching contact, fixed arching contact sealing system compression chamber moving piston 10 valves 11 insulating nozzle SITE exec contacts cose precompression contacts open Been Pious “B26 Hows Emerperey Ca 081 86715 ha) (m2 S03 220 Sey