Coordination between Merlin Gerin circuit breakers and Telemecanique Canalis electrical busbar trunking When chosing a circuit breaker to protect a busbar trunking system, it is necessary to take into account: c the usual rules concerning the circuit breaker current settings: Ib i Ir i Inc where Ib = maximum load current Ir = circuit breaker current setting Inc = current rating of the busbar trunking c the electrodynamic withstand of the busbar trunking: The peak current Î limited by the circuit breaker must be less than the electrodynamic withstand capacity (or rated peak current) of the busbar trunking Traditional circuit breaker selection method Installation example Example Consider two 630 kVA/400 V transformer (Usc %) supplying a main LV switchboard for which the prospective short-circuit current on the busbars is 44 kA From the switchboard, a 30-metre long Canalis KVA63 transmission electrical busbar trunking system (630A) supplies a Canalis KSA63 trunking system (630A) for distribution with high-density tap-offs A tap-off on the KSA63 trunking supplies a Canalis KSA16 trunking system The short-circuit level are respectively: c 44 kA downstream of circuit-breaker CB1 and at the upstream connection of the KVA63 trunking c 33 kA at the junction between the KVA63 transmission trunking and the KSA63 trunking for high-density tap-offs Coordination tables The tables for coordinating Merlin Gerin E40700 E40701 Application for Compact NS range CB1 CB1 = NS400H (Breaking capacity = 70 kA) Isc = 65 kA Ib = 360 A CB2 = NS160H (Breaking capacity = 70 kA) CB2 Ib = 140 A Isc = 65 kA What circuit breakers should be chosen for CB1 and CB2 to protect the installation against short-circuits ? prospective Isc circuit breakers Isc protection level for KVA63 trunking Isc protection level for KVA63 trunking Isc protection level for KSA16 trunking E39613 The circuit breaker used to protect a distribution circuit is chosen according to two fundamental criteria: c the maximum load current Ib flowing in the supply circuit; c the prospective short-circuit current Isc at a point where the circuit breaker is to be installed The circuit breaker is choosen such that: v In circuit breaker u Ib, v breaking capacity of the circuit breaker u Isc Multi 9, Compact, Compact CM and Masterpact circuit breakers with respect to Telemecanique Canalis busbar trunking give directly, for the different types of trunking and circuit breakers, the maximum shortcircuit current for which the trunking is protected 630 kVA 400 V CB1 44 kA NS630N (45 kA breaking capacity) 45 kA CB2 33 kA NS160N (35 kA breaking capacity) 45 kA 35 kA 630 kVA 400 V prospective Isc 44 kA LV main swichboard D1 Disconnector ? prospective Isc 44 kA prospective Isc 33 kA Canalis KSA 63 a 30-meter KVA63 transmission EBT system D2 Disconnector ? Canalis KSA 158 BTP555E-4.0700-2-Busbar trunk Merlin Gerin 158 21/05/99, 10:02 type of Canalis busbar trunking trunking rating (in A to 35 °C) type of circuit breaker Masterpact Isc max in kA ms 100 NT06H1 NT08H1 NT10H1 NT12H1 NT06L1 NT08L1 NT10L1 NW08N1 NW10N1 NW12N1 NW08H1 NW10H1 NW12H1 NW08H2 NW10H2 NW12H2 NW08L1 NW10L1 NW12L1 M08N1 M10N1 M12N1 M08H1 M10H1 M12H1 M08H2 M10H2 M12H2 M08L1 M10L1 M12L1 KSA-10 160 KSA-16 250 KSA-25 400 14 KSA-40 500 24 24 24 24 55 55 55 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 KSA-50 630 26 26 26 26 70 70 70 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 32 32 32 Merlin Gerin BTP555E-4.0700-2-Busbar trunk KSA-63 800 32 32 32 32 120 120 120 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 40 40 40 KSA-80 38 38 38 38 150 150 150 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 50 50 50 159 159 21/05/99, 10:02 Coordination tables between Merlin Gerin circuit breakers and Telemecanique Canalis electrical busbar trunking (cont.) voltage : 380/415 V type of Canalis busbar trunking trunking rating (in A at 35°C) type of circuit breaker Compact Isc max in kA ms Masterpact type of Canalis busbar trunking trunking rating (in A at 35°C) type of circuit breaker Compact Isc max in kA ms Masterpact NS250N NS250H NS250L NS400N NS400H NS400L NS630N NS630H NS630L C801N C801H C801L C1001N C1001H C1001L NT06H1 NT08H1 NT10H1 NT06L1 NT08L1 NT10L1 NW08N1 NW10N1 NW08H1 NW10H1 NW08H2 NW10H2 NW08L1 NW10L1 M08N1 M10N1 M08H1 M10H1 M08H2 M10H2 M08L1 M10L1 NS250N NS250H NS250L NS400N NS400H NS400L NS630N NS630H NS630L C801N C801H C801L C1001N C1001H C1001L NT06H1 NT08H1 NT10H1 NT06L1 NT08L1 NT10L1 NW08N1 NW10N1 NW08H1 NW10H1 NW08H2 NW10H2 NW08L1 NW10L1 M08N1 M10N1 M08H1 M10H1 M08H2 M10H2 M08L1 M10L1 KVA-20 200 35 70 100 35 35 35 KVA-31 315 KVA-40 400 KVA-50 500 KVA-63 630 45 70 150 45 70 150 45 70 150 45 70 150 45 70 150 45 70 150 45 70 150 45 70 150 40 40 70 40 40 70 36 36 36 140 140 140 36 36 36 36 36 36 36 36 33 33 33 33 33 33 40 40 23 KVC-20 200 35 70 100 35 35 35 24 26 KVC-31 315 KVC-40 400 KVC-63 630 45 70 150 45 70 150 45 70 150 45 70 150 45 70 150 45 70 150 40 40 70 40 40 70 36 36 36 150 150 150 36 36 36 36 36 36 36 36 36 36 36 36 36 36 40 40 25 27 55 60 160 BTP555E-4.0710-1-Busbar trunk KVA-80 800 50 60 110 50 60 110 40 40 150 150 150 40 40 40 40 40 40 40 40 40 40 40 40 40 40 55 55 KVC-80 800 50 60 110 50 60 110 40 40 150 150 40 40 40 40 40 40 40 40 40 40 40 40 40 40 55 55 Merlin Gerin 160 21/05/99, 10:02 voltage : 380/415 V type of Canalis busbar trunking trunking rating (in A at 35°C) type of circuit breaker Compact Isc max in kA ms Masterpact C1001N C1001H C1001L C1251N C1251H NT10H1 NT12H1 NT16H1 NT10L1 NW10N1 NW12N1 NW16N1 NW20N1 NW10H1 NW12H1 NW16H1 NW20H1 NW25H1 NW32H1 NW40H1 NW40bH1 NW50H1 NW10H2 NW12H2 NW16H2 NW20H2 NW25H2 NW32H2 NW40H2 NW40bH2 NW50H2 NW25H3 NW32H3 NW40H3 NW10L1 NW12L1 NW16L1 NW20L1 M10N1 M12N1 M16N1 M20N1 M25N1 M10H1 M12H1 M16H1 M20H1 M25H1 M32H1 M40H1 M50H1 M10H2 M12H2 M16H2 M20H2 M25H2 M32H2 M40H2 M50H2 M10L1 M12L1 M16L1 M20L1 M25L1 KTA-10 1000 50 55 100 50 55 40 40 40 150 40 40 40 KTA-12 1200 50 70 150 50 70 42 42 42 150 42 42 42 40 40 40 50 50 50 40 40 40 50 50 50 KTA-16 1600 KTA-20 2000 42 42 42 150 42 42 42 42 60 60 60 60 60 42 42 42 150 42 42 42 42 65 65 65 65 65 60 60 60 60 60 60 40 40 55 55 40 40 40 40 40 40 40 40 40 40 40 40 55 55 50 50 50 50 50 50 85 85 65 65 65 80 80 80 80 40 40 40 55 55 60 60 60 60 60 60 60 60 60 60 130 130 105 105 105 72 72 72 72 72 72 140 140 40 40 40 55 55 65 65 65 73 73 73 73 73 73 73 130 130 130 KTA-25 2500 KTA-30 3000 42 42 65 65 65 65 65 80 65 65 65 65 65 86 80 80 80 80 80 80 86 86 86 86 86 86 80 80 80 86 86 86 65 65 90 90 90 90 90 90 90 90 150 150 55 55 55 55 75 75 75 75 75 75 75 75 80 80 80 80 86 86 86 86 75 75 90 90 90 90 130 130 130 Merlin Gerin BTP555E-4.0710-1-Busbar trunk KTA-40 4000 161 161 21/05/99, 10:02 Coordination tables between Merlin Gerin circuit breakers and Telemecanique Canalis electrical busbar trunking (cont.) voltage : 380/415 V type of Canalis busbar trunking trunking rating (in A at 35°C) type of circuit breaker Compact Isc max in kA ms Masterpact C1001N C1001H C1001L C1251N C1251H NT10H1 NT12H1 NT16H1 NT10L1 NW10N1 NW12N1 NW16N1 NW20N1 NW10H1 NW12H1 NW16H1 NW20H1 NW25H1 NW32H1 NW40H1 NW40bH1 NW50H1 NW63H1 NW10H2 NW12H2 NW16H2 NW20H2 NW25H2 NW32H2 NW40H2 NW40bH2 NW50H2 NW63H2 NW25H3 NW32H3 NW40H3 NW10L1 NW12L1 NW16L1 NW20L1 M10N1 M12N1 M16N1 M20N1 M25N1 M10H1 M12H1 M16H1 M20H1 M25H1 M32H1 M40H1 M50H1 M63H1 M10H2 M12H2 M16H2 M20H2 M25H2 M32H2 M40H2 M50H2 M63H2 M10L1 M12L1 M16L1 M20L1 M25L1 KTC-10 1000 50 55 100 50 55 40 40 40 150 40 40 40 KTC-13 1350 50 70 150 50 70 KTC-16 1600 KTC-20 2000 KTC-25 2500 KTC-30 3000 150 42 42 42 42 50 50 50 150 42 42 42 42 65 65 65 65 65 42 40 40 40 150 42 42 42 42 60 60 60 60 60 65 65 65 65 82 65 65 65 65 82 40 40 40 50 50 50 60 60 60 60 60 60 40 40 40 40 40 55 55 55 55 40 40 40 40 40 40 50 50 50 40 40 40 55 55 50 50 50 85 85 65 65 65 80 80 80 80 40 40 40 55 55 60 60 60 60 60 60 60 60 60 60 130 130 105 105 105 73 73 73 73 73 73 140 140 40 40 40 55 55 65 65 65 73 73 73 73 73 73 73 130 130 130 82 82 82 82 82 82 82 82 82 82 82 150 150 150 150 55 55 55 55 75 75 75 75 75 75 75 75 82 82 82 82 130 130 130 160 BTP555E-4.0710-2-Busbar trunk 82 82 82 82 82 82 82 82 82 KTC-40 4000 KTC-50 5000 65 65 90 90 90 95 95 90 90 90 90 90 95 95 90 90 75 75 90 90 95 95 90 90 90 90 95 95 130 130 130 Merlin Gerin 160 21/05/99, 10:02 voltage : 380/415 V type of Canalis busbar trunking trunking rating (in A at 35°C) type of circuit breaker Compact Isc max in kA ms Masterpact C801N C801H C801L C1001N C1001H C1001L C1251N C1251H CMN CMH NT08H1 NT10H1 NT12H1 NT16H1 NT08L1 NT10L1 NW08N1 NW10N1 NW12N1 NW16N1 NW20N1 NW08H1 NW10H1 NW12H1 NW16H1 NW20H1 NW25H1 NW32H1 NW40H1 NW40bH1 NW50H1 NW63H1 NW08H2 NW10H2 NW12H2 NW16H2 NW20H2 NW25H2 NW32H2 NW40H2 NW40bH2 NW50H2 NW63H2 NW25H3 NW32H3 NW40H3 NW08L1 NW10L1 NW12L1 NW16L1 NW20L1 M08N1 M10N1 M12N1 M16N1 M20N1 M25N1 M08H1 M10H1 M12H1 M16H1 M20H1 M25H1 M32H1 M40H1 M50H1 M63H1 M08H2 M10H2 M12H2 M16H2 M20H2 M25H2 M32H2 M40H2 M50H2 M63H2 M08L1 M10L1 M12L1 M16L1 M20L1 M25L1 KHF 1000 28 28 45 28 28 45 28 28 28 28 28 28 28 28 70 70 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 KHF KHF KHF KHF 1200/1450 2200/2500 3000/3400 4000/4500 50 50 80 50 50 38 38 38 38 38 38 150 150 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 28 28 28 28 28 28 28 38 38 38 38 38 38 38 35 35 35 28 28 28 50 50 50 42 42 42 70 85 70 85 50 42 42 42 65 65 65 65 65 92 92 92 65 65 65 65 100 100 100 92 92 92 92 92 92 92 92 92 92 92 100 100 100 100 117 117 117 117 117 117 150 150 150 40 55 55 55 55 65 75 75 75 75 90 90 75 75 75 75 100 100 75 75 100 100 90 90 90 90 90 90 90 100 100 100 100 120 120 100 100 125 125 130 130 130 130 130 65 65 100 100 100 100 100 141 141 141 141 141 Merlin Gerin BTP555E-4.0710-2-Busbar trunk 161 161 21/05/99, 10:02 Coordination tables between Merlin Gerin circuit breakers and Telemecanique Canalis electrical busbar trunking (cont.) voltage: 660/690 V type of Canalis busbar trunking trunking rating (in A at 35°C) type of circuit breaker Compact Icc maxi en kA eff Masterpact NS100N NS100H NS100L NS160N NS160H NS160L NS250N NS250H NS250L NS400N NS400H NS400L NS630N NS630H NS630L C801N C801H C801L C1001N C1001H C1001L C1251N C1251H CMN NT06H1 NT08H1 NT10H1 NT12H1 NT06L1 NT08L1 NT10L1 NW08N1 NW10N1 NW12N1 NW08H1 NW10H1 NW12H1 NW08H2 NW10H2 NW12H2 NW08L1 NW10L1 NW12L1 M08N1 M10N1 M12N1 M08H1 M10H1 M12H1 M08H2 M10H2 M12H2 M08L1 M10L1 M12L1 KSA-10 100 10 20 10 20 10 15 KSA-16 160 10 75 10 75 10 20 10 17 14 KSA-25 250 10 75 10 20 10 20 28 14 KSA-40 400 KSA-50 500 KSA-63 630 KSA-80 800 10 20 35 10 20 35 25 26 26 10 20 35 25 29 30 10 20 35 25 35 45 25 35 45 24 24 24 24 24 25 25 25 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 26 26 26 26 26 25 25 25 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 32 32 32 32 32 25 25 25 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 20 20 35 25 40 60 25 40 60 25 40 38 38 38 38 38 25 25 25 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 Merlin Gerin 162 BTP555E-4.0720-1-Busbar trunk 162 21/05/99, 10:02 voltage: 660/690 V type of Canalis busbar trunking trunking rating (in A at 35°C) type of circuit breaker Compact Icc maxi en kA eff Masterpact NS250N NS250H NS250L NS400N NS400H NS400L NS630N NS630H NS630L C801N C801H C801L C1001N C1001H C1001L NT06H1 NT08H1 NT10H1 NT06L1 NT08L1 NT10L1 NW08N1 NW10N1 NW08H1 NW10H1 NW08H2 NW10H2 NW08L1 NW10L1 M08N1 M10N1 M08H1 M10H1 M08H2 M10H2 M08L1 M10L1 KVA-20 200 10 20 10 20 20 KVA-31 315 KVA-40 400 KVA-50 500 KVA-63 630 10 20 75 10 20 35 10 20 75 10 20 35 10 20 75 10 20 35 10 20 75 10 20 35 33 33 50 33 33 50 36 36 36 25 25 25 36 36 36 36 36 36 36 36 33 33 33 33 33 33 33 33 23 23 23 24 24 24 26 26 26 Merlin Gerin BTP555E-4.0720-1-Busbar trunk KVA-80 800 25 40 60 25 40 60 40 40 25 25 25 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 163 163 21/05/99, 10:02 Coordination tables between Merlin Gerin circuit breakers and Telemecanique Canalis electrical busbar trunking (cont.) voltage: 660/690 V type of Canalis busbar trunking trunking rating (in A at 35°C) type of circuit breaker Compact Icc maxi en kA eff Masterpact NS250N NS250H NS250L NS400N NS400H NS400L NS630N NS630H NS630L C801N C801H C801L C1001N C1001H C1001L NT06H1 NT08H1 NT10H1 NT06L1 NT08L1 NT10L1 NW08N1 NW10N1 NW08H1 NW10H1 NW08H2 NW10H2 NW08L1 NW10L1 M08N1 M10N1 M08H1 M10H1 M08H2 M10H2 M08L1 M10L1 KVC-20 200 10 20 10 20 20 KVC-31 315 KVC-40 400 KVC-63 630 KVC-80 800 10 20 75 10 20 35 10 20 75 10 20 35 10 20 75 10 20 35 25 36 60 25 36 60 36 36 36 25 25 25 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 36 25 40 60 25 40 60 40 40 40 25 25 25 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 25 27 25 25 Merlin Gerin 162 BTP555E-4.0720-2-Busbar trunk 162 21/05/99, 10:02 voltage: 660/690 V type of Canalis busbar trunking trunking rating (in A at 35°C) type of circuit breaker Compact Icc maxi en kA eff Masterpact C1001N C1001H C1001L C1251N C1251H NT10H1 NT12H1 NT16H1 NT10L1 NW10N1 NW12N1 NW16N1 NW20N1 NW10H1 NW12H1 NW16H1 NW20H1 NW25H1 NW32H1 NW40H1 NW40bH1 NW50H1 NW10H2 NW12H2 NW16H2 NW20H2 NW25H2 NW32H2 NW40H2 NW40bH2 NW50H2 NW25H3 NW32H3 NW40H3 NW10L1 NW12L1 NW16L1 NW20L1 M10N1 M12N1 M16N1 M20N1 M25N1 M10H1 M12H1 M16H1 M20H1 M25H1 M32H1 M40H1 M50H1 M10H2 M12H2 M16H2 M20H2 M25H2 M32H2 M40H2 M50H2 M10L1 M12L1 M16L1 M20L1 M25L1 KTA-10 1000 25 40 60 25 40 40 40 40 25 40 40 40 40 40 40 40 40 40 40 KTA-12 1200 25 40 60 25 40 42 42 42 25 42 42 42 42 50 50 50 50 50 50 KTA-16 1600 KTA-20 2000 42 42 42 25 42 42 42 42 60 60 60 60 42 42 42 25 42 42 42 42 65 65 65 65 60 60 60 60 60 60 40 40 50 50 40 40 40 40 40 40 40 40 40 40 40 40 40 40 50 50 50 50 50 50 50 50 50 50 50 65 65 65 65 40 40 40 40 40 60 60 60 60 60 60 60 60 60 60 65 65 65 65 65 72 72 72 72 72 72 100 100 40 40 40 40 40 65 65 65 65 65 73 73 73 73 73 65 65 65 KTA-25 2500 KTA-40 4000 42 65 65 65 65 65 80 65 65 65 65 65 86 80 80 80 80 80 80 86 86 86 86 86 86 80 80 80 86 86 86 65 65 90 90 85 85 90 90 90 90 100 100 40 40 55 55 65 65 75 75 75 75 75 75 80 80 80 80 85 85 85 85 75 75 85 85 85 85 65 65 65 Merlin Gerin BTP555E-4.0720-2-Busbar trunk KTA-30 3000 163 163 21/05/99, 10:02 Coordination tables between Merlin Gerin circuit breakers and Telemecanique Canalis electrical busbar trunking (cont.) voltage: 660/690 V type of Canalis busbar trunking trunking rating (in A at 35 °C) type of circuit breaker Compact Isc max in kA ms Masterpact 1000 C1001N C1001H C1001L C1251N C1251H NT10H1 NT12H1 NT16H1 NT10L1 NW10N1 NW12N1 NW16N1 NW20N1 NW10H1 NW12H1 NW16H1 NW20H1 NW25H1 NW32H1 NW40H1 NW40bH1 NW50H1 NW63H1 NW10H2 NW12H2 NW16H2 NW20H2 NW25H2 NW32H2 NW40H2 NW40bH2 NW50H2 NW63H2 NW25H3 NW32H3 NW40H3 NW10L1 NW12L1 NW16L1 NW20L1 M10N1 M12N1 M16N1 M20N1 M25N1 M10H1 M12H1 M16H1 M20H1 M25H1 M32H1 M40H1 M50H1 M63H1 M10H2 M12H2 M16H2 M20H2 M25H2 M32H2 M40H2 M50H2 M63H2 M10L1 M12L1 M16L1 M20L1 M25L1 KTC-10 1350 25 40 60 25 40 40 40 40 25 40 40 40 KTC-13 1600 25 40 60 25 40 KTC-16 2000 KTC-20 2500 25 42 42 42 40 40 40 50 50 50 25 42 42 42 42 60 60 60 60 60 25 42 42 42 42 65 65 65 65 65 40 40 40 50 50 50 60 60 60 60 60 60 40 40 40 40 40 40 40 40 40 40 40 55 55 50 50 50 50 40 40 40 50 50 50 50 50 50 65 65 50 50 50 65 65 65 65 40 40 40 40 40 60 60 60 60 60 60 60 60 60 60 65 65 65 65 65 73 73 73 73 73 73 100 100 40 40 40 40 40 65 65 65 65 65 73 73 73 73 73 65 65 65 KTC-25 3000 KTC-30 4000 42 42 65 65 65 65 82 65 65 65 65 82 82 82 82 82 82 82 82 82 82 82 82 100 100 100 100 40 40 55 55 65 65 75 75 75 75 75 75 80 80 80 80 82 82 82 82 KTC-50 65 65 90 90 95 95 90 90 90 90 90 95 95 90 90 75 75 85 85 85 85 85 85 85 85 85 85 65 65 65 164 BTP555E-4.0730-1-Busbar trunk 82 82 82 82 82 KTC-40 5000 Merlin Gerin 164 21/05/99, 10:02 Coordination between circuit breakers and Telemecanique Canalis electrical busbar trunking Cascading and reinforced discrimination The use of current-limiting circuit breakers makes it possible to implement coordination techniques This improves circuit breaker performance in terms of breaking capacity and continuity of service Coordination techniques are described and recognised by the following standards: c product standards IEC 947-1 and 947-2; c installation standards IEC 364, NF C15-100, etc Cascading The use of a current-limiting circuit breaker upstream to reinforce the breaking capacity of a downstream circuit breaker Principle Application for Compact NS range Cascading Cascading E40702 E40703 Circuit breaker selection taking coordination into account CB1 = NS400H CB1 Reinforced break cap 70 kA CB2 = NS160N (Breaking cap = 35 kA) CB2 Isc = 65 kA CB2 breaking capacity Application for Compact NS range Cascading and reinforced discrimination E40704 Principle Cascading and reinforced discrimination E40702 Discrimination In the event of an electrical fault on one outgoing circuit, discrimination is the ability of the electrical installation to maintain the continuity of electrical power supplied to the other circuits not concerned by the fault As a general rule, cascading and discrimination techniques are applied independently Schneider has developed an exclusive system to conciliate cascading and discrimination This system ensures discrimination up to the reinforced breaking capacity of the association of circuit breakers CB1 and CB2 ➚ CB1 = NS400H CB1 Break cap + discrimination reinforced 70 kA CB2 Isc = 65 kA CB2 = NS160N Isc = 65 kA ➚ CB2 breaking capacity Discrimination ensured up to the reinforced breaking capacity of CB2 ➚ Merlin Gerin BTP555E-4.0730-1-Busbar trunk 165 165 21/05/99, 10:02 Coordination tables between Merlin Gerin circuit breakers and Telemecanique Canalis electrical busbar trunking (cont.) voltage: 660/690 V type of Canalis busbar trunking trunking rating (in A at 35 °C) type of circuit breaker Compact Isc max in kA ms Masterpact C801N C801H C801L C1001N C1001H C1001L C1251N C1251H CMN CMH NT08H1 NT10H1 NT12H1 NT16H1 NT08L1 NT10L1 NW08N1 NW10N1 NW12N1 NW16N1 NW20N1 NW08H1 NW10H1 NW12H1 NW16H1 NW20H1 NW25H1 NW32H1 NW40H1 NW40bH1 NW50H1 NW63H1 NW08H2 NW10H2 NW12H2 NW16H2 NW20H2 NW25H2 NW32H2 NW40H2 NW40bH2 NW50H2 NW63H2 NW25H3 NW32H3 NW40H3 NW08L1 NW10L1 NW12L1 NW16L1 NW20L1 M08N1 M10N1 M12N1 M16N1 M20N1 M25N1 M08H1 M10H1 M12H1 M16H1 M20H1 M25H1 M32H1 M40H1 M50H1 M63H1 M08H2 M10H2 M12H2 M16H2 M20H2 M25H2 M32H2 M40H2 M50H2 M63H2 M08L1 M10L1 M12L1 M16L1 M20L1 M25L1 KHF 1000 28 28 45 28 28 30 28 28 28 28 28 28 28 28 25 25 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 KHF KHF KHF KHF 1200/1450 2200/2500 3000/3400 4000/4500 28 40 60 28 40 38 38 38 38 38 38 25 25 38 38 38 38 38 38 38 38 38 38 38 38 28 38 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 38 28 28 28 28 28 28 28 38 38 38 38 38 38 38 28 28 28 28 28 28 38 38 38 38 38 38 50 50 50 50 38 65 65 65 65 65 92 92 92 65 65 65 65 100 100 100 85 85 85 85 85 92 92 92 92 92 92 85 85 85 85 100 100 100 100 100 100 100 100 100 65 75 75 75 75 85 85 75 75 75 75 85 85 75 75 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 65 65 65 65 65 65 65 100 100 100 85 85 100 100 100 100 100 164 BTP555E-4.0730-2-Busbar trunk Merlin Gerin 164 21/05/99, 10:03 Coordination between circuit breakers and Telemecanique Canalis electrical busbar trunking Cascading and reinforced discrimination The use of current-limiting circuit breakers makes it possible to implement coordination techniques This improves circuit breaker performance in terms of breaking capacity and continuity of service Coordination techniques are described and recognised by the following standards: c product standards IEC 947-1 and 947-2; c installation standards IEC 364, NF C15-100, etc Cascading The use of a current-limiting circuit breaker upstream to reinforce the breaking capacity of a downstream circuit breaker Principle Application for Compact NS range Cascading Cascading E40702 E40703 Circuit breaker selection taking coordination into account CB1 = NS400H CB1 Reinforced break cap 70 kA CB2 = NS160N (Breaking cap = 35 kA) CB2 Isc = 65 kA CB2 breaking capacity Application for Compact NS range Cascading and reinforced discrimination E40704 Principle Cascading and reinforced discrimination E40702 Discrimination In the event of an electrical fault on one outgoing circuit, discrimination is the ability of the electrical installation to maintain the continuity of electrical power supplied to the other circuits not concerned by the fault As a general rule, cascading and discrimination techniques are applied independently Schneider has developed an exclusive system to conciliate cascading and discrimination This system ensures discrimination up to the reinforced breaking capacity of the association of circuit breakers CB1 and CB2 ➚ CB1 = NS400H CB1 Break cap + discrimination reinforced 70 kA CB2 Isc = 65 kA CB2 = NS160N Isc = 65 kA ➚ CB2 breaking capacity Discrimination ensured up to the reinforced breaking capacity of CB2 ➚ Merlin Gerin BTP555E-4.0730-2-Busbar trunk 165 165 21/05/99, 10:03 ... electrical busbar trunking (cont.) voltage : 380/415 V type of Canalis busbar trunking trunking rating (in A at 35°C) type of circuit breaker Compact Isc max in kA ms Masterpact type of Canalis busbar. .. Gerin BTP555E-4.0710-1 -Busbar trunk KTA-40 4000 161 161 21/05/99, 10:02 Coordination tables between Merlin Gerin circuit breakers and Telemecanique Canalis electrical busbar trunking (cont.)... Merlin Gerin BTP555E-4.0710-2 -Busbar trunk 161 161 21/05/99, 10:02 Coordination tables between Merlin Gerin circuit breakers and Telemecanique Canalis electrical busbar trunking (cont.) voltage: