Page 1 USERS’ Manual System of Air Circuit Breakers UW2-40H 4 Pole 100%N 4000 A 12 kV 400 / 440 V 80 kA 500 / 550 V 70 kA 660 / 690 V 55 kA I cw 80 kA 1.0 s 80 kA 50 kA 3.0 s Sr.No.: Copyright ©...
Page 6 1.1 Visual Inspection SYSTEM OF AIR CIRCUIT BREAKER Version Fr1 3P EDO Rating 1600A Cat. No. Serial No. : Before Unpacking, A) Inspect the carton for any damage. In case of visible damage to the carton, contact nearest L&T branch office before unpacking. B) Verify the breaker version and rating written on the carton with your order.
Page 7 Step 1: Cut & remove the straps Step 2: Lift the carton and remove any accessories taped to the breaker or kept loose on the palette. Step 3: Remove Breaker mounting nuts (8 Nos.) as indicated by arrows from both left and right sides Step 1: Cut &...
Page 9 Temperature Range : -40 to 85 C. Do not stack more than 4 breakers one above the other. Ensure that higher frame ACBs are not stacked above lower frame ACBs.
Page 11 UV Release Closing Release Shunt Release 415~,400V 415~,400V 415~,400V UW2-25N 4 Pole 100%N 2500 A 12 kV 400 / 440 V 50 kA 500 / 550 V 42 kA 660 / 690 V 36 kA DISCHARGED I cw 50 kA 1.0 s 26 kA 3.0 s CHARGED Charging Device...
Page 12 (Microswitch)
Page 13 CO NNE CTE D TES T DISC ONN ECT ED ocations Withdrawal Rails Door Racking Interlock ation Breaker Pull-out Handle Racking Handle Smart Racking Shutter Guide for...
Page 14 For D/O Breakers remove the Transportation Cushion (2 Nos.) & it’s instruction label,before doing racking operation of the breaker. Remove Remove Transportation Cushion Caution Flap Keeping OFF button (11a) pressed, open the Racking Shutter (16). In case Breaker is out of the panel or the panel door is open, gently press Racking Interlock (26) to defeat it.
Page 16 Common Parameters Unit Symbol Rated Operational Voltage at 50/60 Hz Upto 800/1000 Rated Insulation Voltage at 50/60 Hz 1250 Rated Impulse Withstand Voltage - Main Circuit Uimp Rated Impulse Withstand Voltage - Auxiliary Circuit Uimp Number of Poles 3 & 4 (50, 100, 200% N) Suitability for Isolation Intrinsic Degree of Protection (Breaker Front) IP 53 / IP 54*...
Page 17 800V/1000V AC FRAME Rating specific parameters Neutral Unit Symbol Rated uninterrupted Current at 50 deg. C 400-2000 400-3200 400-4000 Version 800V ~ 50/60 Hz Rated Ultimate S.C. Breaking 1000V ~ 50/60 Hz Capacity Rated Service 800V ~ 50/60 Hz 100% Icu S.C.
Page 21 400A-2000A N/N08/D10 & 400A-2500A S/H Fr.1 3P Fixed Circuit Breaker VERSION DIM. B 400-2000A N, N08, D10 &S 400-2000A H 2500A S & H Drawout Circuit Breaker VERSION DIM. C (min.) DIM. C* (min.) N, S, H N08/D10 DISCONNECTED 25.5 (250) (47.5) These 2 supports are must...
Page 22 400A-2000A N/N08/D10 & 400A-2500A S/H Fr.1 4P (100% N) Fixed Circuit Breaker DIM. B VERSION 400-2000A N, N08, D10 & S 400-2000A H 2500A S & H Drawout Circuit Breaker VERSION DIM. C (min.) DIM. C* (min.) N, S, H N08/D10 DISCONNECTED 25.5...
Page 23 400A-2000A N/N08 & 400A-2500A S/H Fr.1 4P (100% N) Fixed Circuit Breaker DIM. B VERSION 400-2000A N, N08 & S 400-2000A H 2500A S & H Drawout Circuit Breaker VERSION DIM. C (min.) DIM. C* (min.) N, S, H DISCONNECTED 25.5 (100) (250)
Page 24 400A-4000A N*/N08*/N10*/ S/ H Fr.2 4P (100% N) Fixed Circuit Breaker DIM. B VERSION 400-2500A N/S 3200-4000A N*/S 400-4000A N08*/N10*/H * Available till 3200A Drawout Circuit Breaker VERSION DIM. C (min.) DIM. C* (min.) N, S, H N08, N10 DISCONNECTED (100) (250) (49.5)
Page 25 400A-6300A N08*/H/V Fr.3 3P Fixed Circuit Breaker * Available till 4000A Drawout Circuit Breaker DIM. C* DIM. C VERSION (min.) (min.) H, V DISCONNECTED 35.5 (100) (250) (47.5) (49.5) These 3 supports are must Mounting holes suitable for M10 / Equivalent BS bolt All Dimensions in mm * In case of T...
Page 26 400A-6300A N08*/H/V Fr.3 4P (100% N) Fixed Circuit Breaker * Available till 4000A Drawout Circuit Breaker DIM. C* DIM. C VERSION (min.) (min.) H, V DISCON- NECTED 35.5 (200) (100) (250) (49.5) (47.5) These 4 supports are must Mounting holes suitable for All Dimensions in mm M10 / Equivalent BS bolt * In case of Temperature Module mounted on cradle...
Page 28 For Fr-1,Terminal Adapter installation. Installation of Terminal Adapter In Fr-3 use equalizer for vertical & a single for frame 2 400-4000A Adaptor for horizontal between two poles.
Page 29 Draw Out Version Frame 1 Frame 2 Frame 3 400A-2000A 2500A 400A-3200A 4000A 400A-4000A 5000A 6300A Vertical termination recommended Width : 65mm Width : 98mm Width : 100mm Width : 165mm Width : 165mm CL60963OOOO CL60964OOOO CL60316OOOO CL60073OOOO CL60966OOOO Height : 65mm Height : 98mm Height : 150mm Height : 125mm...
Page 30 X = 100 -150 mm 15 max X = 100 -150 mm 3-12...
Page 31 Termination - Fixed Breakers Flat Termination 400A-1600A N/N08/D10/S/H Fr.1-3P Bolt length FRAME 1 400-1600A N 400-1600A N08/D10/S 24 Bolt length for mounting 400-1600A H link(s) on Flat Terminals M10 bolts to be used for link termination to be cumulative link(s) Holes (on both sides) for Earthing Tightening torque: 3.0 kgfm thickness + 15 mm.
Page 32 Termination - Fixed Breakers Vertical Terminals 400A-1600A N/N08/D10/S/H Fr.1-3P BREAKER ADAPTOR 2000A N/N08/D10/S/H Fr.1-3P CAT NO. RATING 400 - 2000A N/N08/D10/S CL60967OOOO 400 - 2000A H CL60968OOOO BREAKER DIMENSION RATING 400 - 2000A N/N08/D10/S 400 - 2000A H Ø12.9 M12 / Equivalent BS bolts to be used for link termination Tightening torque: 3.2 kgfm Vertical Terminals 2500A S/H Fr.1-3P...
Page 33 Termination - Fixed Breakers Bolt length for FRAME 1 Bolt length mounting link(s) on 400 -1600A N Flat Terminals 400 -1600A N08/D10/S 24 to be cumulative Flat Termination 400 -1600A H link(s) thickness + 400A-1600A N/N08/D10/S/H Fr.1-4P 15 mm. 73.5 Holes (on both sides) for Earthing connections by M10/Equivalent BS bolt.
Page 34 Termination - Fixed Breakers Vertical Terminals 400A-1600A N/N08/D10/S/H Fr.1-4P & 2000A N/N08/D10/S/H Fr.1-4P 400 - 2000A N/D10/N08/S CL60967OOOO CL60968OOOO DIMENSION BREAKER RATING 400 - 2000A N/D10/N08/S Ø12.9 400 - 2000A H M12 / Equivalent BS bolts to be used for link termination Tightening torque: 3.2 kgfm Ø12.9 M12 / Equivalent BS bolts to be used for link termination...
Page 35 Termination - Fixed Breakers Flat Termination Bolt length for mounting Bolt length link(s) on Flat Terminals 400A-1600A N/N08/N10/S/H Fr.2-3P to be cumulative link(s) thickness + 15 mm. VERSION 400-1600A N/S 24 24 81.2 400-1600A N08/N10/H 30 30 98.4 133.3 133.3 Holes (on both sides) for Earthing connections by M10 / Equivalent BS bolt M10 bolts to be used for link termination...
Page 36 Termination - Fixed Breakers Vertical Termination 400A-4000A N*/N08*/N10*/S/H Fr.2-3P ADAPTOR VERSION 400-2500A N/S CL60122OOOO 3200-4000A N*/S CL60977OOOO 400-4000A N08*/N10*/H CL60977OOOO BREAKER DIMENSION RATING 400 - 2500A N/S 3200-4000A N*/S 400-4000A N08*/N10*/H 133.3 133.3 133.3 133.3 * Available till 3200A M12 / Equivalent BS bolts to be used for links termination Details of 4P(200% N) on request Tightening torque: 3.2 kgfm All Dimensions in mm...
Page 37 Termination - Fixed Breakers Top: Horizontal Bottom: Vertical Termination 4000A S/H Fr-2-3P VERSION ADAPTOR 4000A S/H CL60977OOOO Ø12.9 133.3 133.3 M12 / Equivalent BS bolts to be used for links termination Details of 4P(200% N) on request Tightening torque: 3.2 kgfm All Dimensions in mm 3-19...
Page 38 Termination - Fixed Breakers VERSION Flat Termination 24 24 81.2 400-1600A N/S 400A-1600A N/N08/N10/S/H Fr.2-4P 30 30 98.4 400-16000A N08/N10/H 133.3 133.3 133.3 Holes (on both sides) for Earthing connections by M10 / Equivalent BS bolts M10 bolts to be used for link termination Tightening torque: 3.0 kgfm Horizontal Termination ADAPTOR...
Page 39 Termination - Fixed Breakers Vertical Termination 400A-4000A N*/N08*/N10*/S /H Fr.2-4P (100% N) ADAPTOR VERSION 400-2500A N/S CL60122OOOO 3200-4000A N*/S CL60977OOOO CL60977OOOO 400-4000A N08*/N10*/H BREAKER DIMENSION RATING 400-2500A N/S 3200-4000A N*/S 400-4000A N08*/N10*/H 133.3 133.3 133.3 133.3 133.3 133.3 * Available till 3200A M12 / Equivalent BS bolts to be used for links termination Tightening torque: 3.2 kgfm 3-21...
Page 40 Termination - Fixed Breakers Top: Horizontal Bottom: Vertical Termination 4000A S/H Fr-2-4P VERSION ADAPTOR 4000A S/H CL60977OOOO Ø12.9 133.3 133.3 133.3 M12 / Equivalent BS bolts to be used for links termination Details of 4P(200% N) on request Tightening torque: 3.2 kgfm All Dimensions in mm 3-22...
Page 41 Termination - Fixed Breakers Bolt length for mounting Bolt length link(s) on Flat Terminals Flat Termination to be cumulative link(s) 400A-1600A N08/H/V Fr.3-3P thickness + 15 mm. 73.5 Holes (on both sides) for Earthing connections by M10 to be used for links termination M10 / Equivalent BS bolt Tightening torque: 3.0 kgfm Horizontal Termination...
Page 42 Termination - Fixed Breakers Adaptor Breaker Rating Dim. A Cat. No. CL60968OOOO 400-4000A 5000A CL60982OOOO SEE DETAIL M12 / Equivalent BS bolts to be used for links termination Tightening torque: 3.2 kgfm Ø12.9 M12 / Equivalent BS bolts to be used for links termination Tightening torque: 3.2 kgfm 3-24...
Page 43 Termination - Fixed Breakers Flat Termination Bolt length for mounting Bolt length link(s) on Flat Terminals 400A-1600A N08/H/V Fr.3-4P (100% N) to be cumulative link(s) thickness + 15 mm. M 10 73.5 Holes (on both sides) for Earthing connections by M10 / Equivalent BS bolt M10 bolts to be used for links termination Tightening torque: 3.0 kgfm Horizontal Termination...
Page 44 Termination - Fixed Breakers Vertical Termination 400A-4000A N08/H/V Fr.3-4P (100% N) & 5000A H/V Fr.3-4P (100% N) Adaptor Dim. A Breaker Rating Cat. No. 400-4000A CL60968OOOO 5000A CL60982OOOO M12 / Equivalent BS bolts to be used for links termination Tightening torque: 3.2 kgfm Vertical Termination 6300A H/V Fr.3-4P (100% N) Adaptor-CL60976OOOO...
Page 45 Termination - Draw-out Breakers THIS PAGE IS INTENTIONALLY LEFT BLANK 3-27...
Page 46 Termination - Draw-out Breakers THIS PAGE IS INTENTIONALLY LEFT BLANK 3-28...
Page 47 Termination - Draw-out Breakers 400A-2000A, N/N08/D10/S/H, Fr.1- Flat Terminals SEE DETAIL A 400A-1600A, N/N08/D10/S/H DETAIL A 14.5 Ø 12.5 25.5 Bolt length 73.5 Bolt length for mounting link(s) on M12 bolts to be used for link termination Flat Terminals to be cumulative link(s) Tightening torque: 3.2 kgfm Thickness + 20 min to 25 max Horizontal Terminals...
Page 48 Termination - Draw-out Breakers 2500A, S/H, 3P & 4P (Fr.1) Vertical Terminals FOR 2500A - 3P S/H Adapter - CL60964OOOO 95.5 Ø 12.9 Ø12.9 73.5 M12 / Equivalent BS bolts to be used for links termination Tightening torque: 3.2 kgfm Vertical Terminals FOR 2500A - 4P S/H Adapter - CL60964OOOO...
Page 49 Termination - Draw-out Breakers 400A-2000A, N/N08/D10/S/H, Fr.1- 4P (100%N) Flat Terminals 400A-1600A, N/N08/D10/S/H SEE DETAIL A DETAIL A 14.5 Ø 12.5 25.5 Bolt length 73.5 M12 bolts to be used for link termination Bolt length for mounting link(s) on Flat Tightening torque: 3.2 kgfm Terminals to be cumulative link(s) thickness +20 min to 25 max.
Page 50 Termination - Draw-out Breakers 400A-3200A, N/N08/N10/S/H Fr.2-3P 65 65 65 36 36 36 Flat Terminals 400A-1600A, N/N08/N10/S/H Bolt length 25.5 25.5 16 16 16 133.3 133.3 133.3 133.3 90 90 90 Bolt length for mounting link(s) on M12 bolts to be used for link termination Flat Terminals to be cumulative link(s) Tightening torque: 3.2 kgfm thickness+20 min to 25 max...
Page 51 Termination - Draw-out Breakers 4000A, S/H, Fr.2-3P (100% N) Vertical Terminals 4000A, S/H Adaptor - CL60965OOOO 95.5 12.9 90.5 133.3 133.3 25.5 Top Horizontal & Bottom Vertical Terminal 4000A, S/H Adaptor - Horizontal: CL60316OOOO Adaptor - Horizontal: CL60316OOOO Vertical: CL60965OOOO 95.5 3 HOLES 12.9...
Page 52 Termination - Draw-out Breakers 400A-3200A, N/N08/N10/S/H, Fr.2-4P (100% N) Flat Terminals 400A-1600A, N/N08/N10/S/H 25.5 Bolt length 133.3 133.3 133.3 Bolt length for mounting link(s) on M12 bolts to be used for link termination Flat Terminals to be cumulative link(s) Tightening torque: 3.2 kgfm thickness+20 min to 25 max Horizontal Terminals 400A-3200A, N/N08/N10/S/H...
Page 53 Termination - Draw-out Breakers 4000A, S/H, Fr.2-4P (100% N) Vertical Terminals 4000A, S/H Adaptor - CL60965OOOO 95.5 12.9 90.5 133.3 133.3 133.3 25.5 Top Horizontal & Bottom Vertical Terminal 4000A, S/H Adaptor - Horizontal: CL60316OOOO Adaptor - Horizontal: CL60316OOOO Vertical: CL60965OOOO 95.5 3 HOLES 12.9...
Page 54 Termination - Draw-out Breakers 400A-4000A N08/H/V Fr.3-3P, 5000A H/V Fr.3-3P & 6300A, H/V Fr.3-3P Flat Terminals 400A-1600A N08/H/V ø12.9 25.5 25.5 73.5 Hole (on both sides) 16 16 for Earthing connections by M10 / Equivalent BS bolt Bolt length M12 bolts to be used for link termination Bolt length for mounting link(s) on Tightening torque: 3.2 kgfm Flat Terminalsto be cumulative link(s)
Page 55 Termination - Draw-out Breakers 400A-4000A N08/H/V Fr.3-3P, 5000A H/V Fr.3-3P & 6300A H/V Fr.3-3P Vertical Terminals 400A-4000A N08/H/V Adaptor - CL60128OOOO Ø12.9 22.5 35.5 Bolt length 73.5 Hole (on both sides) Bolt length for mounting link(s) on for Earthing connections Flat Terminalsto be cumulative link(s) by M10 / Equivalent BS bolt thickness+20 min to 25 max...
Page 56 Termination - Draw-out Breakers 400A-4000A N08/H/V Fr.3-4P (100% N),5000A H/V Fr.3-4P (100% N) Bolt length & 6300A H/V Fr.3-4P (100% N) Bolt length for mounting link(s) on Flat Terminals Flat Terminals to be cumulative link(s) thickness+20 min to 25 max 400A-1600A N08/H/V ø12.9 25.5...
Page 57 Termination - Draw-out Breakers 400A-4000A N08/H/V Fr.3-4P (100% N), 5000A H/V Fr.3-4P (100% N) & 6300A H/V Fr.3-4P (100% N) Vertical Terminals 400A-4000A N08/H/V Adaptor - CL60128OOOO Ø12.9 22.5 Bolt length 35.5 Hole (on both sides) 73.5 Bolt length for mounting link(s) on for Earthing connections Flat Terminals to be cumulative link(s) by M10 / Equivalent BS bolt...
Page 58 Termination - Draw-out Breakers 400A-4000A H/V Fr.3-4P (50% N) & 5000A H/V Fr.3-4P (50% N) Flat Terminals 400A-1600A H/V Bolt length ø12.9 *For Phase poles R, Y, B only Not applicable for Neutral pole 25.5 Bolt length for mounting link(s) on Flat Terminals to be cumulative link(s) 73.5 Hole (on both sides)
Page 59 Termination - Fixed Breakers FRAME 1 Flat Termination 400 - 800A N 400 - 800A S 400A-800A N/S/H Fr.1-4P (200% N) 400 - 800A H 73.5 Bolt length Holes (on both sides) for Earthing connections by M10/Equivalent BS bolt. Bolt length for mounting link(s) on M10 bolts to be used for link termination Flat Terminals to be cumulative link(s) Tightening torque: 3.0 kgfm...
Page 60 Termination - Fixed Breakers Vertical Terminals BREAKER ADAPTOR 400A-1000A N/S/H Fr.1-4P (200% N) RATING CAT. No. CL60967OOOO 400-1000A N/S CL60968OOOO 400-1000A H BREAKER DIMENSION RATING 400 - 1000A N/S 400 - 1000A H Ø12.9 M12 / Equivalent BS bolts to be used for link termination Tightening torque: 3.2 kgfm Vertical Terminals 1250A N/S/H Fr.1-4P...
Page 61 Termination - Fixed Breakers VERSION 400 -1250A N/S 24 24 81.2 11 Flat Termination 1600A N/S 30 30 98.4 9 400A-1600A N/S/H Fr.2-4P (200% N) 400-1600A H 30 30 98.4 133.3 133.3 133.3 Holes (on both sides) for Earthing connections by M10 / Equivalent BS bolts M10 bolts to be used for link termination Tightening torque: 3.0 kgfm...
Page 62 Termination - Fixed Breakers Vertical Termination 400A-2000A N*/S/H Fr.2-4P (200% N) ADAPTOR VERSION 400-1250A N/S CL60122OOOO 1600-2000A N*/S CL60977OOOO CL60977OOOO 400-2000A H Ø 12.9 133.3 133.3 133.3 133.3 133.3 133.3 * Available till 1600A M12 / Equivalent BS bolts to be used for links termination Tightening torque: 3.2 kgfm 3-44...
Page 63 Termination - Fixed Breakers Bolt length Flat Termination Bolt length for mounting link(s) on (200% N) 400A-1600A H/V Fr.3-4P Flat Terminals To be cumulative link(s) Thickness + 15 mm. 73.5 Holes (on both sides) for Earthing connections by M10 to be used for links termination M10 / Equivalent BS bolt Tightening torque: 3.0 kgfm Horizontal Termination...
Page 64 Termination - Fixed Breakers Vertical Termination Adaptor Breaker Rating Dim. A Cat. No. 400A-2000A H/V Fr.3-4P 400-2000A CL60968OOOO & 2500A H/V Fr.3-4P (200% N) 2500A CL60982OOOO SEE DETAIL Ø12.9 M12 / Equivalent BS bolts to be used for links termination Tightening torque: 3.2 kgfm 3-46...
Page 65 Termination - Draw-out Breakers 400A-1000A, N/S/H, Fr.1-4P (200%N) Flat Terminals 400A-1000A, N/S/H SEE DETAIL A DETAIL A 14.5 (Ø 12.5) 25.5 Bolt length 73.5 M12 bolts to be used for link termination Bolt length for mounting link(s) on Flat Tightening torque: 3.2 kgfm Terminals to be cumulative link(s) thickness +20 min to 25 max.
Page 66 Termination - Draw-out Breakers Flat Terminals 400A-1600A, N/S/H, Fr.2-4P (200% N) Ø12.9 25.5 Bolt length 90.5 133.3 133.3 133.3 Bolt length for mounting link(s) on M12 bolts to be used for link termination Flat Terminals to be cumulative link(s) Tightening torque: 3.2 kgfm thickness+20 min to 25 max Horizontal Terminals 400A-1600A N/S/H (200% N)
Page 67 Termination - Draw-out Breakers 400A-2000A H/V,Fr.3-4P (200%N) *10 mm Terminal height difference due to equalizer for Neutral. Flat Terminals 400A-1600A H/V ø12.9 25.5 25.5 Bolt length 73.5 Hole (on both sides) 16 16 for Earthing connections Bolt length for mounting link(s) on by M10 / Equivalent BS bolt Flat Terminals to be cumulative link(s) thickness+20 min to 25 max...
Page 68 Termination - Draw-out Breakers *10 mm Terminal height difference Vertical Terminals due to equalizer for Neutral. FOR 2500A H/V,Fr.3-4P(200%N) Adaptor - CL60067OOOO Ø12.9 35.5 73.5 Vertical Terminals FOR 1250A S/H,Fr.1-4P (200%N) Adapter - CL60964OOOO 90.5 Ø 12.9 Ø12.9 73.5 M12 / Equivalent BS bolts to be used for links termination. All Dimensions in mm Tightening torque: 3.2 kgfm 3-50...
Page 69 External Neutral CT: For Earth fault protection and protection of Neutral against overloads, Neutral CT is required. For 4-Pole breakers, the CT is provided inside the breaker, to be used on 4 wire system whereas for 3-pole breakers, external CT is available separately.
Page 70 Installation of Phase Barriers: For Draw-out Breakers DETAIL Z SEE DETAIL Z SCALE 1:1 3-52...
Page 71 3-53...
Page 72 3.4 Control Circuit Connections: SICs & SIC Bridge system of ACB’s Secondary Isolating Contacts (8b) facilitate Control circuit wiring with following features, Cradle SIC block slot & each breaker SIC slot is — pre-defined and marked for specific connections (Ref. page 3-37). Breaker is supplied with SIC as per the order —...
Page 73 UW-MTX1.0/1G/1Gi/1.5G/1.5Gi/2.5/2.5G/3.5/3.5EC/3.5H For URM / SRM only one can be used X=111/121 Closing Release X1= 112/122 X2 = 114/124 Aux. Protection & Electrical Aux. Aux. Aux. Under Common Ready Contact Control Charging Contact Contact Contact Voltage Fault Remote Terminals Device # “NC”...
Page 74 N R Y B SR/SRW UW-MTX 1.0 LOAD Ready Spring Electric Shunt Closing Charge Charging Release Release Release Device Indication Close 4m/6m...
Page 75 N R Y B SR/SRW UW-MTX 1G LOAD Ready Electric Spring Shunt Closing Charge Charging Release Release Release Indication Device Close 4m/6m...
Page 76 N R Y B SR/SRW UW-MTX 1.5G LOAD Spring Ready Electric Shunt Closing Charge Charging Release Release Release Indication Device Close 4m/6m...
Page 77 R Y B UW-MTX 1.0Gi/1.5Gi LOAD U/V Fault Signal Spring Ready Electric Common Electrical Auxiliary Contacts Closing Shunt /Shunt Trip Signal Remote Charge Main Circuit Protection & Control Unit Charging Fault Position 4NO + 4 NC (only one can Reset Release Release Release...
Page 78 ACB STATUS ACB STATUS...
Page 79 ACB STATUS ACB STATUS...
Page 80 ACB STATUS ACB STATUS...
Page 81 ACB STATUS ACB STATUS...
Page 82 Section 4 System of ACB’s Accessories: Features & Mounting 4.1 Cradle Mounted Accessories 4.2 Breaker Mounted Accessories...
Page 83 4.1 Cradle Mounted Accessories...
Page 90 4.2 Breaker Mounted Accessories...
Page 91 Undervoltage Auxiliary Contact Closing Shunt Block (3a) Release (4) Release (5) Release (6) Common Fault 2 3 4 5 Indication Several Breaker-mounted accessories are located on the front top side of the breaker and have specific positions. Undervoltage release controller (4c) Operation Undervoltage Counter (10)
Page 92 4-10...
Page 93 4-11...
Page 94 4-12...
Page 95 4-13...
Page 96 j. Locking ‘OFF’ Button (18): Function: To prevent undesirable Closing of breaker. Features: It can accept Kirk/Castell/Profalux/Ronis locks for interlocking with other electrical devices in the Tools required: Screw Driver (Tip width 3 mm) control scheme. Installation: Components for ‘Locking Arrangement’ Lock Type Lock Assembly on the Lock...
Page 97 Section 5 Protection & Control units 5.1 Identification 5.2 Protection Characteristics...
Page 98 5.1 Identification UW-MTX1.0 UW-MTX 1G Identification Label UW - MTX1.0 UW - MTX1G Power ON LED Fault Indication LEDs BCD Switches Query key Self Test key TO ACCESS TEST KIT SOCKET & BREAKER RATING, REMOVE THIS FLAP TO ACCESS TEST KIT SOCKET & BREAKER RATING, REMOVE THIS FLAP Breaker Rating Plug Test Kit Connector UW-MTX 1.5G...
Page 99 5.1 Identification UW-MTX 2.5 UW-MTX 2.5G Identification Label Power ON LED OLED Display Fault Indication LEDs Navigation Keys Escape key Self Test key Query key UW-MTX 3.5 UW-MTX 3.5EC UW-MTX 3.5H Test Kit Connector Communication Module Configurator Metering Module * Available as accessory...
Page 100 2.Feature List UW-MTX VERSIONS Feature FEATURES/MODULE 2.5G 3.5EC 3.5H SUPPORTED 1.5G 1.5Gi LSIGN LSIGN LSIGN LSIGN Protections LSIGN LSIGN Current Metering Voltage Metering THD & I-harmonics Metering Trip records Event records Additional protections Power Metering Maximum Demand Reverse Power Trip Circuit Supervision Earth Leakage Restricted Earth Fault Digital Input Output...
Page 101 5.3 Detailed Overview Protection Settings for UW-MTX1.0/1G/1Gi/1.5G/1.5Gi Parameter MTX1.0G Factory Settings MTX1.5G MTX1Gi MTX1.5Gi MTX1.0 Protection: Enable/Disable Enable Pick-Up (Ir)= In x …for I2T OFF- 0.4-0.5-0.6-0.7-0.8-0.85-0.9-0.95-1 Overload (Phase) 0.5-1-2-4-6-12-18-24-30 Delay (tr) in s Pre-alarm 0.9Ir (fixed) Thermal Memory ON/OFF Protection: Enable/Disable Disable Pick-Up I = Ir x …...
Page 102 Protection Settings for UW-MTX2.5/2.5G/3.5/3.5EC/3.5H UW-MTX2.5 Parameter UW-MTX2.5G UW-MTX3.5 UW-MTX3.5EC UW-MTX3.5H Factory Settings ü ü ü ü Protection: Enable/Disable ü Enable Pick-Up (Ir)= In x …for I T, I T, / VI Curves 0.4 to 1 In in steps of 0.05 1 (I T) Overload (Phase) Delay (tr) in s...
Page 103 UW-MTX3.5H UW-MTX2.5 UW-MTX2.5G UW-MTX3.5 Parameter UW-MTX3.5EC Factory Settings ü ü Protection: Enable/Disable ü Disable Pick-Up (Vs)= Vn x… 1.05 to 1.5 Vn in steps of 0.01 Over Voltage Delay 100ms to 5s in steps of 100ms Vs reset 0.95 to 0.99 Vs in steps of 0.01 ü...
Page 104 Protection Characteristics Overload I T (for UW-MTX1.0) 10000 1000...
Page 105 Protection Characteristics Overload I T (for UW-MTX1.0,1G,1Gi,1.5G,1.5Gi,2.5,2.5G,3.5,3.5EC,3.5H) 10000 1000 30 s 24 s Tolerance 18 s Trip Time: ±20% 12 s 0.5 s 7 8 9 10 Current Multiples (x Ir)
Page 106 Protection Characteristics Overload I T for (UW-MTX2.5/2.5G/3.5/3.5EC/3.5H) 100000 10000 1000 0.01 6 7 8 9 10...
Page 107 Protection Characteristics Overload SI (for UW-MTX2.5/2.5G/3.5/3.5EC/3.5H) 10000 1000 6 7 8 9 10 5-10...
Page 108 Protection Characteristics Overload LI/VI(for UW-MTX2.5/2.5G/3.5/3.5EC/3.5H) 10000 1000 6 7 8 9 10 5-11...
Page 109 Protection Characteristics Short Circuit I T ON(for UW-MTX1G/1.5G/1Gi/1.5Gi/2.5/2.5G/3.5/3.5EC/3.5H) 10000 1000 0.02 0.01 0.01 Current Multiples (x In) 5-12...
Page 110 Protection Characteristics Short Circuit I T OFF(for UW-MTX1.0,1G,1Gi,1.5G,1.5Gi,2.5,2.5G,3.5,3.5EC,3.5H) 10000 1000 0.02 0.01 Current Multiples (x In) 5-13...
Page 111 Protection Characteristics Instantaneous (for UW-MTX1.0,1G,1Gi,1.5G,1.5Gi,2.5,2.5G,3.5,3.5EC,3.5H) 0.01 0.01 Current Multiples (x In) 5-14...
Page 112 Protection Characteristics Earth Fault I T ON (for UW-MTX1G/1Gi/1.5G/1.5Gi) 10000 1000 0.4 s 0.1 s 0.01 0.01 Current Multiples (x In) 5-15...
Page 113 Protection Characteristics Earth Fault I T OFF(UW-MTX1G/1Gi/1.5G/1.5Gi) 0.01 Current Multiples (x In) 5-16...
Page 114 Protection Characteristics Earth Fault I T ON (for UW-MTX 2.5G/3.5/3.5EC/3.5H) 5-17...
Page 115 Protection Characteristics Earth Fault I T OFF(UW-MTX2.5G/3.5/3.5EC/3.5H) 0.01 Current Multiples (x In) 5-18...
Page 116 Section 6 Putting System Of Breakers in Operation 6.1 Re-loading in panel 6.2 Checking ON-OFF operation 6.3 Testing 6.4 Setting P&C unit 6.5 Trip simulation of P&C unit ACB’s in Connected Position 6.7 Securing...
Page 117 6.1 Re-loading in panel: Pull-out the Withdrawal Rails(25) & ensure that Ensure that Breaker rests correctly in 2 slots on either side of cradle rail (38). If equipped with Rating Error Preventor (23), Cradle will not accept breaker of different rating & breaking capacity.
Page 118 6.2. Checking ON-OFF Operation: DISCHARGED CHARGED DISCHARGED DISCHARGED Now, the Breaker is and Spring is...
Page 119 6.3 Testing (Control circuit & Interlocks): (if breaker is equipped with accessories)
Page 120 6.4 Configuring P&C Unit Configuring UW-MTX1.0/1G/1Gi/1.5G/1.5Gi UW-MTX1.0/1G/1Gi/1.5G/1.5Gi Protection E/F S/C To activate ZSI E/F and ZSI S/C , set the ZSI E/F and ZSI S/C DIP Switch to ON position. NOTE: UW-MTX1.0 has fixed delay of 10s for Overload protection.
Page 121 6.4 Configuring UW-MTX2.5/2.5G/3.5/3.5EC 1. System Settings Settings Password Menu Current : 0A Settings Config Mode * * * * : 0A View Records View Mode : 0A Metering Press “SEL” key in the Select “Settings” by Enter the password “0000” Select “Config”...
Page 122 2. Unit Settings Settings Password Current Menu É : 0A Config Mode Settings * * * * View Mode : 0A View Records : 0A Metering Enter the password “0000” Select “Settings” by Select “Config” Mode” Press “SEL” key (Factory set: default) SEL key Config Mode MTX Unit...
Page 123 3. Protection Settings Password Current Menu : 0A Settings Config Mode * * * * : 0A View Records View Mode : 0A Metering Press “SEL” key in the Enter the password “0000” Select “Config” Mode” Select “Settings” by overlay (Factory Set: default) SEL key Password...
Page 124 3. Protection..continued Earth Fault :When fault current flows from phase to earth due to rupturing of insulation, this can lead to arc flash events and electric shock. This causes more damage to the distribution system. This feature provides protection against earth fault current. Neutral Overload :This provides protection against neutral overload at 50%, 100% &...
Page 125 Protections under V- protection: Under voltage :When the voltage in one of the phases reduces than threshold, this protection gets activated. Over voltage :When the voltage in one of the phases increases above threshold, this protection gets activated. Voltage unbalance :Voltage unbalance creates damage to the distribution system. This protection checks voltage unbalance in all three phases.
Page 126 6.5 Trip Simulation of P & C Unit : The Salient Features: * Generation of 3 phase current & voltage test signal (configurable Amplitude, frequency and Phase angles) * Simulation Kit Active Mode (Powering of Release): 2 hours & stand by mode : 2 days * Smart GUI with multi functional key operation * Graphical display (OLED) * Continuous battery monitoring feature...
Page 127 Omega ACBs in Connected Position: U-POWER 2. Check tightness of Termination on Omega and other link/busbars. U-POWER 3. Complete other Commissioning activities. 4. Check LED indication on P&C unit: UN-RS2GT POWER 70 80 90 100% x Ir PICK-UP (Ir) DELAY (Tr)(s) OVER LOAD Metering display:...
Page 128 6.7 Securing your Breaker: U-POWER Omega offers several security features to prevent unauthorized access and inadvertent operation. Padlocking both buttons Locking any one button Sealing Either/Both buttons 6-12...
Page 129 Section 7 Maintenance & Operations 7.1 Maintenance schedule & Operations 7.2 Accessories and Spares...
Page 130 7.1 Maintenance Schedule & Operations: CAUTION Nature of Schedule/Frequency Actions Reference Maintenance Routine Monthly Check LED indication on P&C unit 7.1a Quarterly Self-diagnostic test of P&C unit 7.1b Temperature check at termination 7.1c Yearly Open & Re-close the breaker 7.1d Rack-out &...
Page 131 Door Racking Interlock defeat (26): Tools required: None Door Racking interlock prevents opening of smart racking shutter (16) and thus, racking in/out of the breaker when panel door is open. If it is necessary to rack-out the breaker with panel door open, racking interlock must be defeated.
Page 132 Up to 690V AC 800/1000V AC Tool required: Box type spanner for M6 Rear Side of Arc Chute Remove arc chute Lift the arc chute then disengage fixing screw using box spanner. from rear side and remove. Once Arc chutes are opened, contacts are visible and can be inspected for erosion. Tool required : None U-Power Omega ACB poes are equipped with an indicator for contact condition.
Page 133 7.1h Greasing of Mechanism: Non-adherence to greasing schedule Greasing schedule Mechanism : 1 Year or 500 operations, whichever is or using other-than-specified grease earlier. Grease to be used in Mechanism - Parts 1 to 6: Red may lead to malfunction. Grease(MobilithSHC-100 of Mobill);...
Page 135 Moving part of the pole can now be removed To take out fixed part of the pole, remove 1 screw from rear side and 2 screws from top as shown.
Page 137 7.2 Accessories & Spares Sr. Component Cat No. Units per Units per Cat No. ACB* 1 E lectrical 110 V CL90360OOOO Charging 50/60Hz 220 V CL90364OOOO Device 240 V CL90359OOOO (E CD) 415 V CL90361OOOO 24/30 V CL90362OOOO 48/60 V CL90363OOOO 110/125 V CL90360OOOO...
Page 138 Sr. Component Cat No. Units per Units per Cat No. UW-MTX1.0 Protection&Control Units CL91966OOOO UW-MTX1.0G CL91971OOOO UW-MTX1.0Gi CL90562OOOO UW-MTX1.5G CL91965OOOO UW-MTX1.5Gi CL90552OOOO UW-MTX 2.5 CL90112OOOO UW-MTX 2.5G CL90610OOOO UW-MTX 3.5 CL90113OOOO UW-MTX 3.5EC CL90700OOOO UW-MTX 3.5H CL91975OOOO UW-MTX 4.5 CL90611OOOO Power Supply Module UN-PS CL90722OOOO...
Page 139 Component Cat No. Units per Units per Cat No. ACB* Safety Cover For Drawout CL90840OOOO Door Racking Interlock CL90979OOOO Door Interlock CL90978OOOO Shroud for CL90974OOOO ON/OFF Buttons Operation Counter CL90983OOOO Set of Lifting hooks CL60406OOOO Secondary Isolating Contacts (Connected & Test position) CL95825OOOO 1 block for Breaker &...
Page 140 Component Sr. No. CAT No. Units per CAT No. Units per ACB* Mechanical Interlock 2 Incomers (2m) CL90810OOOO (2 metre, 3 metre and 5 metre) 3 Incomers (2m) CL90811OOOO 1 set 1 set per scheme 2 Incomers & 1 Standby (2m) CL90812OOOO 2 Incomers &...
Page 141 Component Sr. No. CAT No. Units per CAT No. Units per ACB* Locking Arrangement for all Position for Castell Lock CL90981OOOO 1 or 2 as for Ronis Lock CL90927OOOO required for Kirk Lock CL90868OOOO for Profalux Lock CL90869OOOO C.T. Wire Harness for Matrix Frame 1-3P CL00687OOOO Frame 1-4P...
Page 142 Section 8 Useful Hints...
Page 143 Useful Hints g out to reset position Smart Racking Shutter is open Close the Smart Racking Shutter (Insert Racking Handle once & pull back) “OFF” button is locke close the breaker Smart Racking Shutter does not Breaker is in-between Rack-in or out the re-close automatically after Connected/Test/Disconnected breaker to any of the...
Page 144 Useful Hints Termination - Draw-out Breakers Direct Aluminium termination Frame-1 : 400 - 1600A N/N08/D10/S/H & 2000A N/N08/D10/S/H Popular Aluminium Termination Rating Aluminium cross Frame Horizontal (with Terminal adaptor) Vertical (with Terminal adaptor) Flat Size section as per IS/IEC (in sq. mm) 6 mm 10 mm 12 mm...
Page 145 Useful Hints Frame-3 : 400 - 4000A N08/H/V & 5000-6300A H/V Popular Aluminium Termination Aluminium cross Rating Frame section as per Horizontal (with Terminal adaptor) Vertical (with Terminal adaptor) Size IS/IEC (in sq. mm) 6 mm 10 mm 12 mm 6 mm 10 mm 12 mm...
Page 146 Useful Hints Termination - Draw-out Breakers Frame-2 : 400 - 3200A N/N08/N10/S/H & 4000A S/H Popular Copper Termination Copper cross Frame Rating section as per IEC Horizontal (with Terminal adaptor) Vertical (with Terminal adaptor) Size (in sq. mm) 6 mm 10 mm 12 mm 6 mm...
Page 147 Useful Hints Termination - Draw-out Breakers Temperature Derating of OMEGA ACBs Current carrying capacity at different temperatures U-POWER Omega Air Circuit Breaker Can operate at higher temperatures than the reference Temperature of 40 C as prescribed In IS & IEC standards, under certain installation conditions. However in some cases current-carrying Capacity needs to be reduced in order to follow temperature Rise limits and safe working conditions.
Page 148 Useful Hints Watt-loss Data of OMEGA ACBs Watt loss value Watt loss plays an important role in the electrical performance of Air Circuit Breaker. Factors like Overall dimension, rated current carrying capacity of Bus-bar and watt loss of apparatus attach To the Air Circuit Breaker also plays an important role in calculation of watt loss data.
Page 149 Bar code Electrical Standard Products Product improvement is a continuous process at L&T. Electrical & Electronics Division For the latest information please contact us. Powai Campus, Mumbai - 400 072, India Tel: 91 - 22 - 67050505 , Fax: 91 - 22 - 67051125 Switchgear(ACB) / SP50374 / 0114...

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U-power omega uw-mtx 1g U-power omega uw-mtx 1.5g U-power omega uw-mtx 1gi U-power omega uw-mtx 1.5gi U-power omega uw-mtx 2.5 U-power omega uw-mtx 2.5g ... Show all