3.5. Current Limiting Fuses. Contents. CLPT and NCLPT Type Fuses. CLPT and NCLPT Type Fuses
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1 .5 Limiting Fuses (N)CLPT Fuses Contents escription Selection Product Selection etails Page V14-T-4 V14-T-4 V14-T-48 Product escription aton CLPT (indicating) and NCLPT (non-indicating) fuses are applied wherever it is necessary to limit the shortcircuit currents on control transformer and potential transformer circuits in high capacity systems in industrial installations and commercial buildings. ratings from 1/2 to 10 are available at 2.4 kv to 4.5 kv. Features CLPT and NCLPT type current limiting fuses offer a number of desirable advantages. Consider the following during the selection process: Quiet Safe Operation: These fuses are designed for silent operation and elimination of flame discharges when the fuse operates Identification of Blown Fuse: These fuses are available in indicating and non-indicating versions. Indicators protrude from indicating type fuses providing a visual indication of a blown fuse Space conomy: Because the fuse is designed to eliminate flame and gas discharges, no exhaust control devices, flame boxes, vents or reinforcing are required Complete Protection Provided: limiting fuses provide positive interruption even on low fault currents. The fuse limits the magnitude of electromechanical stresses in the apparatus to be protected s: isconnect and non-disconnect mountings are available for most types of fuses from 5 kv through 15 kv. Live parts are available for 2 kv and 4.5 kv fuses imensions: Various fuse sizes are available for a wide range of applications Construction CLPT type current limiting fuses are basically constructed in a similar fashion to other aton current limiting fuses. s and Selection When a decision has been made to use current limiting fuses, the minimum amount of information required to make the proper selection is: Voltage rating rating Interrupting rating method Non-disconnect mounting isconnect mounting Live parts only No required mounting Refer to tables on Pages V14-T-4 to V14-T-49 for assistance in selecting the correct fuse catalog number. These types of fuses are used in conjunction with potential and control power transformers. There are specific rules governing the selection of the required fuse continuous rating. The current limiting fuse application notes earlier in this publication offer additional information about this type of application. When selecting the appropriate fuse for a new installation, keep in mind that one fuse unit and one compatible mounting may be required for each phase. V14-T-42
2 Limiting Fuses.5 Selection CLPT Fuse Units CLPT Product Selection CLPT Type Maximum kv 2 = 2.75 kv 5 = 5.5 kv 8 = 8. kv 15 = 15.5 kv 25 = 25.8 kv 8 = 8 kv Maximum kv 2 = 2.75 kv 5 = 5.5 kv 8 = 8. kv 15 = 15.5 kv 25 = 25.8 kv 8 = 8 kv Type CLPT Type CLPT NCLPT 15 CLPT A Insulator G = Glass polyester P = Porcelain Ampere CLPT - P NM - A imensions A = Shorter length B = Longer length Hardware F = isconnect end fittings L = isconnect live parts M = isconnect mounting NL = Non-disconnect live parts NM = Non-disconnect mounting CLPT Type Limiting Fuses kv Maximum (2.4 kv Nominal) Performance Curves Interrupting iameter Center Length Approximate (Amperes) rms (ka Sym.) Approximate imensions in Inches (mm) Shipping Weight Lbs (kg) Minimum Melting Time Total Clearing Time imensions A = Shorter length B = Longer length Peak Let- Through (20.6) 4.50 (114.) 0.25 (0.11) TC TC TC NCLPT (20.6) 4.50 (114.) 0.25 (0.11) TC TC TC NCLPT (20.6) 4.50 (114.) 0.25 (0.11) TC TC TC NCLPT (20.6) 4.50 (114.) 0.25 (0.11) TC TC TC NCLPT (20.6) 4.50 (114.) 0.25 (0.11) TC TC TC NCLPT-5 V14-T-4
3 .5 Limiting Fuses Non- CLPT Type Limiting Fuses 5.5 kv Maximum (4.8 kv Nominal) Performance Curves Interrupting iameter Center Length Approximate Shipping Minimum (Amperes) rms (ka Sym.) Approximate imensions in Inches (mm) Weight Lbs (kg) Melting Time CLPT Type s and Hardware 5.5 kv Maximum (4.8 kv Nominal) Notes Refers only to 5CLPT and 5NCLPT-A fuses only. See Page V14-T-8 for diagram of typical mounting. nd fittings supplied only when required. Total Clearing Time Peak Let- Through Non (20.6) 5.6 (14.0) 0.25 (0.11) TC TC TC NCLPT (20.6) 5.6 (14.0) 0.25 (0.11) TC TC TC NCLPT (20.6) 5.6 (14.0) 0.25 (0.11) TC TC TC NCLPT (20.6) 5.6 (14.0) 0.25 (0.11) TC TC TC NCLPT (20.6) 5.6 (14.0) 0.25 (0.11) TC TC TC NCLPT (20.6) 5.6 (14.0) 0.25 (0.11) TC TC TC NCLPT (25.4) 5.6 (14.0) 0.25 (0.11) TC TC TC B487H (25.4) 5.6 (14.0) 0.25 (0.11) TC TC TC B487H (25.4) 5.6 (14.0) 0.25 (0.11) TC TC TC B487H (25.4) 5.6 (14.0) 0.25 (0.11) TC TC TC B487H (25.4) 5.6 (14.0) 0.25 (0.11) TC TC TC B487H (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC TC NCLPT-.5-A (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC TC NCLPT-1-A (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC TC NCLPT-2-A (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC TC NCLPT--A (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC TC NCLPT-5-A (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC TC NCLPT-10-A (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC56506 TC CLPT (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC56506 TC CLPT (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC56506 TC CLPT (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC56506 TC CLPT (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC56506 TC CLPT (40.6) 8.10 (205.7) 9.50 (241.) 1.2 (0.54) TC TC56506 TC CLPT-10 Ampere Fuse Type Voltage BIL (kv) (Including, nd Fittings) Porcelain Insulator Glass-Polyester Insulator (Including nd Fittings) nd Fittings (isconnect Only) Non-disconnect 60 5CLPT-PNM-A 5CLPT-GNM-A CLPT-NL isconnect 60 5CLPT-PM-A 5CLPT-GM-A CLPT-L CLPT-F 10 Non-disconnect 60 5CLPT-PNM-B 5CLPT-GNM-B CLPT-NL isconnect 60 5CLPT-PM-B 5CLPT-GM-B CLPT-L CLPT-F V14-T-44
4 Limiting Fuses.5 Non- CLPT Type Limiting Fuses 8. kv Maximum (7.2 kv Nominal) Performance Curves Interrupting iameter Center Length Approximate Shipping Minimum (Amperes) rms (ka Sym.) Approximate imensions in Inches (mm) Weight Lbs (kg) Melting Time CLPT Type s and Hardware 8. kv Maximum (7.2 kv Nominal) Notes Refers only to 8CLPT and 8NCLPT-A or -B fuses only. See Page V14-T-8 for diagram of typical mounting. nd fittings supplied only when required. Total Clearing Time Peak Let- Through Non (20.6) 8.00 (20.2) 0.25 (0.11) TC TC TC NCLPT (20.6) 8.00 (20.2) 0.25 (0.11) TC TC TC NCLPT (27.9) 5.00 (127.0) 0.5 (0.2) TC TC TC NCLPT (27.9) 5.00 (127.0) 0.5 (0.2) TC TC TC NCLPT (27.9) 5.00 (127.0) 0.5 (0.2) TC TC TC NCLPT (40.6) 8.10 (205.7) 9.50 (241.) 1.5 (0.70) TC TC TC NCLPT-.5-A (40.6) 8.10 (205.7) 9.50 (241.) 1.5 (0.70) TC TC TC NCLPT-1-A (40.6) 8.10 (205.7) 9.50 (241.) 1.5 (0.70) TC TC TC NCLPT-2-A (40.6) 8.10 (205.7) 9.50 (241.) 1.5 (0.70) TC TC TC NCLPT--B (40.6) (292.1) (27.7) 1.6 (0.7) TC TC TC NCLPT-5-B (40.6) (292.1) (27.7) 1.6 (0.7) TC TC TC NCLPT-10-B (40.6) 8.10 (205.7) 9.50 (241.) 1.5 (0.70) TC TC56506 TC CLPT (40.6) 8.10 (205.7) 9.50 (241.) 1.6 (0.7) TC TC56506 TC CLPT (40.6) 8.10 (205.7) 9.50 (241.) 1.6 (0.7) TC TC56506 TC CLPT (40.6) 8.10 (205.7) 9.50 (241.) 1.6 (0.7) TC TC56506 TC CLPT-10 Ampere Fuse Type Voltage BIL (kv) (Including, nd Fittings) Porcelain Insulator Glass-Polyester Insulator (Including nd Fittings) nd Fittings (isconnect Only) Non-disconnect 75 8CLPT-PNM-A 8CLPT-GNM-A CLPT-NL isconnect 75 8CLPT-PM-A 8CLPT-GM-A CLPT-L CLPT-F 10 Non-disconnect 75 8CLPT-PNM-B 8CLPT-GNM-B CLPT-NL isconnect 75 8CLPT-PM-B 8CLPT-GM-B CLPT-L CLPT-F V14-T-45
5 .5 Limiting Fuses Non- CLPT Type Limiting Fuses 15.5 kv Maximum (7.2 kv Nominal) Performance Curves Interrupting iameter Center Length Approximate Shipping Minimum (Amperes) rms (ka Sym.) Approximate imensions in Inches (mm) Weight Lbs (kg) Melting Time CLPT Type s and Hardware 15.5 kv Maximum (14.4 kv Nominal) Notes See Page V14-T-8 for diagram of typical mounting. nd fittings supplied only when required. Total Clearing Time Peak Let- Through Non (40.6) (292.1) (27.7) 1.6 (0.7) TC TC TC NCLPT (40.6) (292.1) (27.7) 1.6 (0.7) TC TC TC NCLPT (40.6) (292.1) (27.7) 1.6 (0.7) TC TC TC NCLPT (40.6) (408.9) (447.0) 2 (0.91) TC TC TC NCLPT (40.6) (408.9) (447.0) 2 (0.91) TC TC TC NCLPT (40.6) (408.9) (447.0) 2 (0.91) TC TC TC NCLPT (40.6) (292.1) (27.7) 1.6 (0.7) TC TC56506 TC CLPT (40.6) (292.1) (27.7) 1.6 (0.7) TC TC56506 TC CLPT (40.6) (292.1) (27.7) 1.6 (0.7) TC TC56506 TC CLPT (40.6) (408.9) (447.0) 2 (0.91) TC TC56506 TC CLPT (40.6) (408.9) (447.0) 2 (0.91) TC TC56506 TC CLPT (40.6) (408.9) (447.0) 2 (0.91) TC TC56506 TC CLPT-10 Ampere Fuse Type Voltage BIL (kv) (Including, nd Fittings) Porcelain Insulator Glass-Polyester Insulator (Including nd Fittings) nd Fittings (isconnect Only) Non-disconnect 95 15CLPT-PNM-A 15CLPT-GNM-A CLPT-NL isconnect 95 15CLPT-PM-A 15CLPT-GM-A CLPT-L CLPT-F 10 Non-disconnect 95 15CLPT-PNM-B 15CLPT-GNM-B CLPT-NL CLPT-F isconnect 95 15CLPT-PM-B 15CLPT-GM-B CLPT-L V14-T-46
6 Limiting Fuses.5 CLPT Type Limiting Fuses 25.5 kv Maximum (2.0 kv Nominal) Interrupting Approximate Performance Curves iameter Center Length Shipping Minimum Total (Amperes) rms (ka Sym.) Approximate imensions in Inches (mm) Weight Lbs (kg) Melting Time Clearing Time CLPT Type s and Hardware 25.5 kv Maximum (2.0 kv Nominal) nd Fittings (Including, nd Fittings) (Including nd Fittings) (isconnect Only) Ampere Fuse Voltage Porcelain Insulator Glass-Polyester Insulator Type BIL (kv) CLPT Type s and Hardware 8.0 kv Maximum (4.5 kv Nominal) nd Fittings (Including, nd Fittings) (Including nd Fittings) (isconnect Only) Ampere Fuse Voltage Porcelain Insulator Glass-Polyester Insulator Type BIL (kv) Notes See Page V14-T-8 for diagram of typical mounting. nd fittings supplied only when required. Peak Let-Through (40.6) (408.9) (447.0) 2 (0.91) TC TC56508 TC CLPT (40.6) (408.9) (447.0) 2 (0.91) TC TC56508 TC CLPT Non-disconnect CLPT-PNM-A 25CLPT-NL isconnect CLPT-PM-A 25CLPT-L CLPT-F CLPT Type Limiting Fuses 8.0 kv Maximum (4.5 kv Nominal) Interrupting Approximate Performance Curves iameter Center Length Shipping Minimum Total (Amperes) rms (ka Sym.) Approximate imensions in Inches (mm) Weight Lbs (kg) Melting Time Clearing Time Peak Let-Through (40.6) (44.) (472.4) 2 (0.91) TC TC56508 TC CLPT isconnect Not applicable Not applicable 25CLPT-NL CLPT-F Non-disconnect Not applicable Not applicable 25CLPT-L V14-T-47
7 .5 Limiting Fuses etails Approximate imensions in Inches (mm) CLPT and NCLPT Type isconnect s A B A C B Overall Length C Hole Inset Contact Height F Overall Height G 5CLPT-GM-A 9.7 (28.0) 6.00 (152.4) 18.6 (47.2) 0.75 (19.0) 1.75 (44.4) 4.50 (114.) 9.56 (242.8) 60 5CLPT-PM-A 9.7 (28.0) 6.00 (152.4) 18.6 (47.2) 0.75 (19.0) 1.75 (44.4) 4.50 (114.) 9.56 (242.8) 60 8CLPT-GM-A 9.7 (28.0) 6.00 (152.4) 18.6 (47.2) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) (06.) 75 8CLPT-GM-B 9.7 (28.0) 6.00 (152.4) 18.6 (47.2) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) (06.) 75 8CLPT-PM-A (2.6) 6.00 (152.4) (558.8) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) (06.) 75 8CLPT-PM-B (2.6) 6.00 (152.4) (558.8) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) (06.) 75 15CLPT-GM-A (2.6) 6.00 (152.4) (558.8) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) (06.) 95 15CLPT-PM-A (2.6) 6.00 (152.4) (558.8) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) (06.) 95 15CLPT-GM-B (44.5) 6.00 (152.4) 26.6 (676.4) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) (06.) 95 15CLPT-PM-B (44.5) 6.00 (152.4) 26.6 (676.4) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) (06.) 95 15CLPY-HPM-A (2.6) 6.00 (152.4) (558.8) 0.75 (19.0) 1.75 (44.4) 8.50 (215.9) 1.56 (44.4) CLPT-HPM-B (44.5) 6.00 (152.4) 26.6 (676.4) 0.75 (19.0) 1.75 (44.4) 8.50 (215.9) 1.56 (44.4) CLPT-PNM-A (485.6) 7.00 (177.8) 26.6 (676.4) 0.75 (19.0) 1.75 (44.4) (04.8) (4.) 150 G F BIL V14-T-48
8 Limiting Fuses.5 Approximate imensions in Inches (mm) CLPT and NCLPT Type Non-isconnect s A B A C B Overall Length C Hole Inset Contact Height F Overall Height G 5CLPT-GNM-A 9.7 (28.0) 6.00 (152.4) 18.6 (47.2) 0.75 (19.0) 1.75 (44.4) 4.50 (114.) 6.94 (176.2) 60 5CLPT-PNM-A 9.7 (28.0) 6.00 (152.4) 18.6 (47.2) 0.75 (19.0) 1.75 (44.4) 4.50 (114.) 6.94 (176.2) 60 8CLPT-GNM-A 9.7 (28.0) 6.00 (152.4) 18.6 (47.2) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) 9.44 (29.8) 75 8CLPT-PNM-A 9.7 (28.0) 6.00 (152.4) 18.6 (47.2) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) 9.44 (29.8) 75 8CLPT-GNM-B (2.8) 6.00 (152.4) (558.8) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) 9.44 (29.8) 75 8CLPT-PNM-B (2.8) 6.00 (152.4) (558.8) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) 9.44 (29.8) 75 15CLPT-GNM-A (2.6) 6.00 (152.4) (558.8) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) 9.44 (29.8) 95 15CLPT-PNM-A (2.6) 6.00 (152.4) (558.8) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) 9.44 (29.8) 95 15CLPT-HPNM-A (2.6) 6.00 (152.4) (558.8) 0.75 (19.0) 1.75 (44.4) 8.50 (215.9) (277.9) CLPT-GNM-B (44.5) 6.00 (152.4) 26.6 (676.4) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) 9.44 (29.8) 95 15CLPT-PNM-B (44.5) 6.00 (152.4) 26.6 (676.4) 0.75 (19.0) 1.75 (44.4) 7.00 (177.8) 9.44 (29.8) 95 15CLPT-HPNM-B (44.5) 6.00 (152.4) 26.6 (676.4) 0.75 (19.0) 1.75 (44.4) 8.50 (215.9) (277.9) CLPT-PNM-A (485.6) 7.00 (177.8) 26.6 (676.4) 0.75 (19.0) 1.75 (44.4) (04.8) 14.4 (67.0) 150 8CLPT-PNM-A (485.6) 7.00 (177.8) 26.6 (676.4) 0.75 (19.0) 1.75 (44.4) (04.8) 14.4 (67.0) 150 G F BIL V14-T-49
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A system fault contribution of 750 mva shall be used when determining the required interrupting rating for unit substation equipment.
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onlinecomponents.com
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gg, am NH DIMENSION KNIFE-BLADE FUSE-LINKS EURO/IEC Fuses & Accessories NH DIMENSION KNIFE-BLADE FUSE-LINKS, FUSE BASES, AND ACCESSORIES
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