MV Switch Disconnectors NALF and AM ABB PTMV

MV Switch Disconnectors NAL/F and AM ABB PTMV Poland 2003 ABB PTMV Division Factory in Przasnysz

BU 3420 - MV fuses / MV Switch Disconnectors SWITCH DISCONNECTORS Indoor BWMW ABB PTMV Poland NAL/F CEF AIRSWITCH series Rotary type: AM

BU 3420 - Switch Disconnector type NAL/F Type NAL / F - INDOOR Based on modular principle Simply and reliable design, A lot of additional equipment, Wide range of application with easy installation and maintenance. ABB PTMV Poland n n

ABB PTMV Poland BU 3420 - Switch Disconnector 12, 17, 5 i 24 k. V / 400, 630 i 1250 A type NAL/F 36 k. V / 630 i 800 A

BU 3420 - Switch Disconnector • 3 -pole switch disconnector and switch fuse combination • IEC 265 -1 (actual: IEC 60 265 -1) - 100 close / open operations at 630 A • • ABB PTMV Poland type NAL/F Class E 1 24 k. V Class E 3 12/17, 5/36 k. V • IEC 420 (actual: IEC 62271 -105) Alternating current switch-fuse combinations • More than 500 000 units in service world wide • Production capacity of 25 000 units per annum

ABB PTMV Poland BU 3420 - Switch Disconnector type NAL/F

ABB PTMV Poland BU 3420 - NAL Switches – main types of switches

BU 3420 - Switch Disconnector Auxiliary switch 2; 4; 8 NO+NC Motor operation on switch mounted Shaft extension for Left-Hand side operation Mechanical interlocking type NAL/F Operating mechanism Hand operating type HE (upper part) - bevel gear Operating handle Auxiliary switch for installation Of fuse interruption Shunt trip coil for A-mechanism ABB PTMV Poland Hand operating type HE (lower part) -Front bearing Earthing switch type E Motor operation mounted in front

ABB PTMV Poland BU 3420 - Switch Disconnector Earthing switch type EB For separate installation type NAL/F Quick make earthing switch type E

BU 3420 - Switch Disconnector type NAL/F Earthing switches § Earthing switches with making capacity §Mounted on pivot side of the switch or on fuse base ABB PTMV Poland §Mechanical interlocking §Earthing switch for separate installation

BU 3420 - Switch Disconnector type NAL/F UEMC 40 K 3 ABB PTMV Poland NM 24… 220 Type UEMC 40 K 3 /NM mounted on the mechanism Type UEMC 40 A 2 mounted on the front panel

BU 3420 - Switch Disconnector 1 2 3 1. Latched snap action - type KS 2. Stored spring energy – type A ABB PTMV Poland With two springs 3. Snap action -type K With one spring type NAL/F

BU 3420 - Switch Disconnector type NAL/F Hand operating mechanism type HE: • Bevel gear • Connection rod • Front bearing with cardanic jointoptional blocking coil • Operating handle • Shaft extension - Left – hand side operation ABB PTMV Poland - Mechanical interlocking

BU 3420 - Switch Disconnector ABB PTMV Poland Mounting example for hand operating mechanism 90 - Transmission with HE type NAL/F

BU 3420 - Switch Disconnector type NAL/F Applications • Cable sectionalizer and transformer switch • Motor switch (with motor fuse CMF) • Switching of capacitor banks • Component for local manufactured panels • Used in switch cubicles • Compact substation (kiosk) ABB PTMV Poland • Utility and industrial application

BU 3420 - Switch Disconnector type NAL/F ABB PTMV Poland Application example

BU 3420 - Switch Disconnector type NAL/F ABB PTMV Poland Applications NAL in substation NAL in Uni. Safe and Uni. Gear cubicle

BU 3420 - Switch Disconnector type NAL/F ABB PTMV Poland Open switch

BU 3420 - Switch Disconnector type NAL/F Connecting of the switch ABB PTMV Poland • Connecting main knife

BU 3420 - Switch Disconnector type NAL/F ABB PTMV Poland Connected switch

BU 3420 - Switch Disconnector type NAL/F Switching off ABB PTMV Poland • flame arc breaking

ABB PTMV Poland BU 3420 - Switch Disconnector type NAL/F

BU 3420 – Air. Switch series The switchboard ROTARY switches and isolators n n AM AR/AS ABB PTMV Poland Available in two versions: n AM type switch disconnector (24 k. V; 400/630 A) n AR/AS type rotary isolators (24 k. V; 400/630/ 800/1250 A)

BU 3420 - Switch Disconnector ABB PTMV Poland Switch Disconnector AM n Air-insulated n Rotary type n 630 A breaking capacity n 40 k. A making capacity n 2 positions: LINE – OPEN n Provide segregation between busbar and feeder compartments n Interlocked with a separate eathing switch type AM

BU 3420 - Switch Disconnector type AM Switch Disconnector AM Voltage signalling device Key lock Auxliary contacts ABB PTMV Poland Door lock Shunt opening release

BU 3420 - Isolators ABB PTMV Poland Switch Isolator AS/AR n Air-insulated n Rotary type n 400, 630, 800, 1250 A rated current n up to 25 k. A short time withstand current type AR/AS

BU 3420 - Isolators type AR/AS Isolators AR/AS Voltage signalling device Key lock Auxliary contacts ABB PTMV Poland Door lock

BU 3420 - Switch Disconnector ABB PTMV Poland Switch disconnector applications type AM

BU 3420 - Switch Disconnector Switch disconnector with fuses type AM 1 2 3 ABB PTMV Poland 5 Caption: 4 1 Busbars 2 Switch Disconnector 3 Fuses 4 Earthing switch 5 Cable fixing point

BU 3420 – Isolators ABB PTMV Poland Isolators applications type AR/AS

ABB PTMV Poland BU 3420

BU 3420 – Switches ASIA: ABB PTMV Poland EUROPE: WE+CEE üAUSTRIA üBELGIUM üBELARUS üBULGARIA üCROATIA üCZECH REP. üDENMARK üESTONIA üFINLAND üGERMANY üGREAT BRITAIN üGREECE üHUNGARY üICELAND üIRELAND üITALY üLATVIA üLITHUANIA üLUXEMBOURG üNORWAY üPOLAND üPORTUGAL üROMANIA üSLOVAKIA üSPAIN üSWEDEN üSWITZERLAND üAUSTRALIA üCHINA üHONG KONG üINDIA üINDONESIA üJAPAN üKOREA ü NEW ZEALAND üMALAYSIA üPAKISTAN üPHILIPPINES üSINGAPORE üTAIWAN üTHAILAND üVIETNAM SOUTH&NORTH AMERICA: üARGENTINA üBOLIVIA üBRAZIL üCANADA üCHILE üCOLOMBIA üECUADOR üMEXICO üPARAGUAY üPERU üUSA üVENEZUELA MIDDLE EAST: üARAB EMIRATES üEGYPT üIRAN üISRAEL üJORDAN üLEBANON üOMAN üQATAR üSAUDI ARABIA üSYRIA üTUNISIA üTURKEY AFRICA: üSENEGAL üSOUTH AFRICA üTANZANIA

BU 3420 - Switch Disconnector • type NAL/F Modern machinery • ISO 9001/14001 certified ABB PTMV Poland • IEC; ANSI, CSA, GOST Standards

ABB PTMV Poland BU 3420

BU 3420 – switch disconnectors – normal operating conditions ABB PTMV Poland • Maximum ambient temperature +400 C • Minimum ambient temperature is -250 C • The altitude does not exceed 1000 m (3300 ft) • The ambient air is not excessively polluted by dust, smoke, corrosive or flammable gases, vapour or salt • Typical conditions of humidity for indoor installations are fulfilled

BU 3420 - switch disconnectors – Standards ABB PTMV Poland • IEC 60265 Switches for voltage above 1 k. V and less than 52 k. V • IEC 60694 Common specification for high-voltage switchgear and controlgear standards • IEC 60129 Alternating current disconnectors and earthing switches • IEC 62271 -105 High voltage switchgear and controlgear • Part 105 -Alternating current switch-fuse combinations • former name IEC 420

BU 3420 - switch disconnectors – application Altitude correction factors for Test and Rating Voltages ABB PTMV Poland Altitude correction factors for Rated Current and Temperature Rise

BU 3420 - switch disconnectors – Switch-fuse ratings ABB PTMV Poland Switch nameplate

ABB PTMV Poland BU 3420 - switch disconnectors – breaking capacity

BU 3420 - HV fuses – Coordination with load break switch ABB PTMV Poland Minimum breaking current with switch disconnector coordination

BU 3420 - switch disconnectors – Operating methods ABB PTMV Poland When using NALF - A or KS operating mechanism are suitable only

ABB PTMV Poland BU 3420 - switch disconnectors – Operating methods

BU 3420 - switch disconnectors – Coordination with switch ABB PTMV Poland Transfer current (striker operation) value of the three-phase symmetrical current at which the fuses and the switch exchange breaking duties NOTE Above this value three-phase current is interrupted by the fuse only. Immediately below this value, the current in the first-pole-toclear is interrupted by the fuse and the current in the other two poles by the switch, or by the fuses, depending on the tolerances of the fuse time current characteristic and the fuse-initiated opening time of the switch.

ABB PTMV Poland BU 3420 - HV fuses – Coordination with load break switch

BU 3420 - HV fuses – Coordination with load break switch ABB PTMV Poland The fuses are incorporated in order to extend the short-circuit breaking rating of the combination beyond that of the switch alone. They are fitted with strikers in order both to open automatically all three poles of the switch on the operation of a fuse and to achieve a correct operation at values of fault current above the minimum melting current but below the minimum breaking current of the fuses The minimum breaking current is normally in the range from 2 to 7 times fuse rated current (dependent of fuse rated current). Naturally the question is what will happen if we get a fault current in the range from minimum melting to minimum breaking current? If this happen, when the last conductor melts off, an arc starts and we get an arc voltage between the fuse terminals as described earlier. The fuse will withstand the arc and the energy dissipated for 200 to 400 ms. Due to the arc voltage the striker system will operate and combined with a load break switch, tripping on signal from the striker, the load break switch will open and interrupt the current before the fuse is damaged.

BU 3420 - HV fuses – Coordination with load break switch ABB PTMV Poland That means in the range from minimum melting current to minimum breaking current the fuse gives the signal and the breaker clears the fault. In this way by combining a load break switch with a pre charged operated mechanism which can be tripped by the fuse striker system, we can obtain protection from minimum melting current and up to the max breaking current for the fuse. When we reach a certain fault current level the fuse will break and clear the fault before the breaker is able to open due to the mechanical operating time of the switch (this is normally 40 -70 ms dependent of type) and we do not get any problem with the breaking capacity of the load break switch, the fuse has already cleared the fault when the breaker opens. We will have a certain range where fuse and switch have approximately same clearing time. This happen at the take over current as shown on earlier slide. The switch itself must have a max. breaking capacity which overlaps the take over point. The requirement to a fuse switch combination is given in IEC 62271 -105 (former IEC 420). and will determine what max. rated current the fuse can have to be sure you have the necessary safety margin for coordination between fuse and switch.