Peak Fault Current Withstand - CMP Products Limited

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Overview of Peak Fault Current Withstand Capabilities of CMP Trefoil Cable Cleats at Various Mounting Intervals

Cable od (mm)	Cable Cleat Peak Fault Level (kA)							Cable Cleat Spacing (mm) Cat 1(1)
Cable od (mm)	Conqueror	Cyclone I	Cyclone II	Cyclone III	Huron	Patriot	Sovereign	Cable Cleat Spacing (mm) Cat 1(1)
24	138.80	101.25	123.29	146.97	68.59	110.23	155.13	300
	106.96	71.59	97.98	110.23	48.50	88.18	122.47	600
	87.33	58.45	80.00	90.00	39.60	72.00	100.00	900
	75.63	50.62	69.27	77.94	34.29	50.91	86.60	1200(2)
26	144.70	105.38	128.33	152.97	71.39	114.73	161.47	300
	111.33	74.51	101.98	114.73	50.48	91.78	127.48	600
	90.90	60.84	83.27	93.68	41.22	74.94	104.08	900
	78.72	52.69	72.10	81.13	35.69	52.99	90.13	1200(2)
28	149.93	109.36	133.17	158.75	74.08	119.06	167.56	300
	115.53	77.33	105.83	119.06	52.39	95.25	132.29	600
	94.33	63.14	86.41	97.21	42.77	77.77	108.01	900
	81.69	54.68	74.82	84.19	37.04	54.99	93.54	1200(2)
30	155.19	113.20	137.84	164.32	76.68	123.24	173.45	300
	119.59	80.04	109.54	123.24	54.22	98.59	136.93	600
	97.74	65.35	89.44	100.63	44.27	80.50	111.80	900
	84.56	56.60	77.45	87.14	38.34	56.92	96.82	1200(2)
32	160.28	116.91	142.36	169.71	79.20	127.28	179.13	300
	123.51	82.67	113.14	127.28	56.00	101.82	141.42	600
	100.84	67.50	92.38	103.93	45.73	83.14	115.47	900
	87.33	58.45	79.99	90.00	39.60	58.78	99.99	1200(2)
34	165.21	120.51	146.75	174.93	81.63	131.20	184.65	300
	127.31	85.21	116.62	131.20	57.73	104.96	145.77	600
	103.95	69.57	95.22	107.12	47.13	85.70	119.02	900
	90.02	60.25	82.45	92.77	40.82	60.59	103.07	1200(2)
36	170.00	124.00	151.00	180.00	84.00	135.00	190.00	300
	131.00	87.68	120.00	135.00	59.40	108.00	150.00	600
	106.96	71.59	97.98	110.23	48.50	88.18	122.47	900
	92.63	62.00	84.84	95.46	42.00	62.35	106.06	1200(2)
38	174.66	127.40	155.14	184.93	86.30	138.70	195.21	300
	134.59	90.08	123.29	138.70	61.03	110.96	154.11	600
	109.89	73.55	100.66	113.25	49.83	90.60	125.83	900
	95.17	63.70	87.16	98.08	43.15	64.06	108.97	1200(2)
40	179.20	130.71	159.17	189.74	88.54	142.30	200.28	300
	138.09	92.42	126.49	142.30	62.61	113.84	158.11	600
	112.75	75.46	103.28	116.19	51.12	92.95	129.09	900
	97.64	65.35	89.43	100.62	44.27	65.72	111.80	1200(2)
42	183.62	133.94	163.10	194.42	90.73	145.82	205.22	300
	141.50	94.71	129.61	145.82	64.16	116.65	162.02	600
	115.53	77.33	105.83	119.06	52.39	95.25	132.28	900
	100.05	66.97	91.64	103.11	45.37	67.35	114.56	1200(2)
44	187.94	137.09	166.94	199.00	92.87	149.25	210.05	300
	144.83	96.93	132.66	149.25	65.67	119.40	165.83	600
	118.25	79.15	108.32	121.86	53.62	97.49	135.40	900
	102.41	68.54	93.79	105.54	46.43	68.93	117.25	1200(2)
46	192.17	140.17	170.69	203.47	94.95	152.60	214.77	300
	148.08	99.11	135.65	152.60	67.15	122.08	169.56	600
	120.91	80.92	110.76	124.60	54.82	99.68	138.44	900
	104.71	70.08	95.90	107.91	47.48	70.48	119.89	1200(2)
48	196.30	143.18	174.36	207.85	96.99	155.88	219.39	300
	151.27	101.24	138.56	155.88	68.59	124.71	173.21	600
	123.51	82.67	113.14	127.28	56.00	101.82	141.42	900
	106.96	71.59	97.96	110.23	48.50	72.00	122.47	1200(2)
50	200.35	146.14	177.96	212.13	98.99	159.10	223.92	300
	154.38	103.33	141.42	159.10	70.00	127.28	176.78	600
	126.05	84.37	115.47	129.91	57.16	103.92	144.33	900
	109.17	73.07	99.98	112.50	49.50	73.48	124.99	1200(2)
52	204.31	149.03	181.48	216.33	100.96	162.25	228.35	300
	157.44	105.38	144.22	162.25	71.39	129.80	180.28	600
	128.55	86.04	117.76	132.48	58.29	105.98	147.19	900
	111.33	74.51	101.96	114.73	50.48	74.94	127.47	1200(2)
54	208.21	151.87	184.94	220.45	102.88	165.34	232.70	300
	160.44	107.39	146.97	165.34	72.75	132.27	183.71	600
	131.00	87.68	120.00	135.00	59.40	108.00	149.99	900
	113.45	75.93	103.91	116.91	51.44	76.36	129.90	1200(2)
56	212.03	154.66	188.33	224.50	104.77	168.37	236.97	300
	163.39	109.36	149.67	168.37	74.08	134.70	187.08	600
	133.40	89.29	122.20	137.48	60.49	109.98	152.75	900
	115.53	77.33	105.81	119.06	52.38	77.76	132.28	1200(2)
58	215.78	157.39	191.66	228.47	106.62	171.35	241.17	300
	166.28	111.29	152.32	171.35	75.40	137.08	190.39	600
	135.76	90.87	124.37	139.91	61.56	111.93	155.45	900
	117.57	78.70	107.69	121.17	53.31	79.14	134.62	1200(2)
60	219.47	160.08	194.94	232.38	108.44	174.28	245.29	300
	169.12	113.19	154.92	174.28	76.69	139.43	193.65	600
	138.08	92.42	126.49	142.31	62.61	113.84	158.11	900
	119.58	80.04	109.53	123.24	54.22	80.49	136.92	1200(2)
62	223.10	162.73	198.16	236.22	110.24	177.17	249.34	300
	171.92	115.07	157.48	177.17	77.95	141.73	196.85	600
	140.37	93.95	128.58	144.66	63.65	115.72	160.72	900
	121.56	81.36	111.34	125.28	55.12	81.82	139.19	1200(2)
64	226.67	165.33	201.33	240.00	112.00	180.00	253.33	300
	174.67	116.91	160.00	180.00	79.20	144.00	200.00	600
	142.61	95.45	130.64	146.97	64.67	117.57	163.29	900
	123.51	82.67	113.12	127.28	56.00	83.13	141.41	1200(2)
66	230.18	167.90	204.45	243.72	113.74	182.79	257.26	300
	177.37	118.72	162.48	182.79	80.43	146.23	203.10	600
	144.82	96.93	132.67	149.25	65.67	119.40	165.83	900
	125.42	83.95	114.87	129.25	56.87	84.42	143.61	1200(2)
68	233.64	170.42	207.53	247.39	115.45	185.54	261.13	300
	180.04	120.50	164.92	185.54	81.64	148.43	206.16	600
	147.00	98.39	134.66	151.50	66.66	121.19	168.32	900
	127.31	85.21	116.60	131.20	57.72	85.69	145.77	1200(2)
70	237.05	172.91	210.56	251.00	117.13	188.25	264.94	300
	182.67	122.26	167.33	188.25	82.83	150.60	209.17	600
	149.15	99.83	136.63	153.71	67.63	122.96	170.78	900
	129.17	86.45	118.30	133.11	58.57	86.94	147.89	1200(2)
72	240.42	175.36	213.55	254.56	118.79	190.92	268.70	300
	185.26	124.00	169.71	190.92	84.00	152.74	212.13	600
	151.26	101.24	138.56	155.89	68.59	124.71	173.20	900
	131.00	87.68	119.98	135.00	59.40	88.18	149.99	1200(2)
74	243.73	177.78	216.49	258.07	120.43	193.55	272.41	300
	187.82	125.71	172.05	193.55	90.73	154.84	215.06	600
	153.35	102.64	140.48	158.04	69.54	126.43	175.59	900
	132.81	88.89	121.64	136.86	60.22	89.39	152.06	1200(2)
76	247.00	180.17	219.40	261.53	122.05	196.15	276.06	300
	190.34	127.40	174.36	196.15	86.31	156.92	217.94	600
	155.41	104.02	142.36	160.16	70.47	128.12	177.94	900
	134.59	90.08	123.27	138.70	61.02	90.59	154.10	1200(2)
78	250.23	182.52	222.27	264.95	123.64	198.71	279.67	300
	192.83	129.06	176.64	198.71	87.43	158.97	220.79	600
	157.44	105.38	144.22	162.25	71.39	129.80	180.27	900
	136.35	91.26	124.88	140.51	61.82	91.78	156.12	1200(2)
80	253.42	184.85	225.10	268.33	125.22	201.25	283.24	300
	195.28	130.71	178.89	201.25	88.55	161.00	223.61	600
	159.45	106.72	146.06	164.32	72.30	131.45	182.57	900
	138.08	92.42	126.47	142.30	62.61	92.95	158.10	1200(2)

(1) CMP recommends that all fixed cleat centres are reduced to 300mm at and near to cable bends, in order to provide better restraint in these important areas.

(2) 1200mm fault levels are shown are for installations that do not include intermediate restraints. Although cables would be safely restrained with fixed cleats mounted at 1200mm intervals, CMP recommends spacing fixed cleats at a maximum of 900mm; this avoids long distances between fixed cleat centres which would allow large ‘arches’ of cables between each fixed cleat in the event of a Short circuit. With longer fixed cleat mounting intervals, these large ‘arches’ could damage the cable ladder or interfere with neighbouring components, and damage the cable insulation in the process. Alternatively, the addition of intermediate restraints fitted midway between two fixed cable cleats will prevent large cable ‘arches’ and also increase the maximum fault current capability of the circuit – please contact CMP for further details.

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