User:LMischler/Tables-2016-chapter-F

F8 - Tab1150

Uo (V)		50 < Uo ≤ 120	120 < Uo ≤ 230	230 < Uo ≤ 400	Uo > 400
System	TN or IT	0.8	0.4	0.2	0.1
	TT	0.3	0.2	0.07	0.04

Fig. F8 – Maximum safe duration of the assumed values of AC touch voltage (in seconds)

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F10 - Tab1151

Uo (V)	T (s)
50 <Uo ≤ 120	0.3
120 < Uo ≤ 230	0.2
230 < Uo ≤ 400	0.07
Uo > 400	0.04

[a]  Uo is the nominal phase to earth voltage

Fig. F10 – Maximum disconnecting time for AC final circuits not exceeding 32 A

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F11 - Tab1152

X IΔn		1	2	5	> 5
Domestic	Instantaneous	0.3	0.15	0.04	0.04
	Type S	0.5	0.2	0.15	0.15
Industrial	Instantaneous	0.3	0.15	0.04	0.04
	Time-delay : 0.06 s	0.5	0.2	0.15	0.15
	Time-delay (other)	According to manufacturer

Fig. F11 – Maximum operating time of RCD’s (in seconds)

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F13 - Tab1154

Uo (V)	T (s)
50 < Uo ≤ 120	0.8
120 < Uo ≤ 230	0.4
230 < Uo ≤ 400	0.2
Uo > 400	0.1

[a]  Uo is the nominal phase to earth voltage

Fig. F13 – Maximum disconnecting time for AC final circuits not exceeding 32 A

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F19 - Tab1154

Leakage capacitance (µF)	First fault current (A)
1	0.07
5	0.36
30	2.17

Note: 1 µF is the 1 km typical leakage capacitance for 4-conductor cable.

Fig. F19 – Correspondence between the earth leakage capacitance and the first fault current

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- Tab1155

Type / installation level	Main-distribution	Sub-distribution	Comments
Source Ground Return (SGR)	Possible		Used
Residual Sensing (RS) (SGR)	Possible	Recommended or required	Often used
Zero Sequence (SGR)	Possible	Recommended or required	Rarely used

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F28 - Tab1156

IΔn	Maximum resistance of the earth electrode
	(50 V)	(25 V)
3 A	16 Ω	8 Ω
1 A	50 Ω	25 Ω
500 mA	100 Ω	50 Ω
300 mA	166 Ω	83 Ω
30 mA	1666 Ω	833 Ω

Fig. F28 – The upper limit of resistance for an installation earthing electrode which must not be exceeded, for given sensitivity levels of RCDs at U_L voltage limits of 50 V and 25 V

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- Tab1157

Core size (mm2)	Value of resistance
S = 150 mm2	R+15%
S = 185 mm2	R+20%
S = 240 mm2	R+25%

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F40 - Tab1158

Circuit	Conductor material	m = Sph/SPE (or PEN)
		m = 1	m = 2	m = 3	m = 4
3P + N or P + N	Copper	1	0.67	0.50	0.40
	Aluminium	0.62	0.42	0.31	0.25

Fig. F40 – Correction factor to apply to the lengths given in tables F41 to F44 for TN systems

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F41 - Tab1159

Nominal cross- sectional area of conductors	Instantaneous or short-time-delayed tripping current Im (amperes)
mm2	50	63	80	100	125	160	200	250	320	400	500	560	630	700	800	875	1000	1120	1250	1600	2000	2500	3200	4000	5000	6300	8000	10000	12500
1.5	100	79	63	50	40	31	25	20	16	13	10	9	8	7	6	6	5	4	4
2.5	167	133	104	83	67	52	42	33	26	21	17	15	13	12	10	10	8	7	7	5	4
4	267	212	167	133	107	83	67	53	42	33	27	24	21	19	17	15	13	12	11	8	7	5	4
6	400	317	250	200	160	125	100	80	63	50	40	36	32	29	25	23	20	18	16	13	10	8	6	5	4
10			417	333	267	208	167	133	104	83	67	60	53	48	42	38	33	30	27	21	17	13	10	8	7	5	4
16					427	333	267	213	167	133	107	95	85	76	67	61	53	48	43	33	27	21	17	13	11	8	7	5	4
25							417	333	260	208	167	149	132	119	104	95	83	74	67	52	42	33	26	21	17	13	10	8	7
35								467	365	292	233	208	185	167	146	133	117	104	93	73	58	47	36	29	23	19	15	12	9
50									495	396	317	283	251	226	198	181	158	141	127	99	79	63	49	40	32	25	20	16	13
70												417	370	333	292	267	233	208	187	146	117	93	73	58	47	37	29	23	19
95														452	396	362	317	283	263	198	158	127	99	79	63	50	40	32	25
120																457	400	357	320	250	200	160	125	100	80	63	50	40	32
150																	435	388	348	272	217	174	136	109	87	69	54	43	35
185																		459	411	321	257	206	161	128	103	82	64	51	41
240																				400	320	256	200	160	128	102	80	64	51

Fig. F41 – Maximum circuit lengths (in metres) for different sizes of copper conductor and instantaneous-tripping-current settings for general-purpose circuit-breakers in 230/400 V TN system with m = 1

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F42 - Tab1160

Sph	Rated current (A)
mm2	1	2	3	4	6	10	16	20	25	32	40	50	63	80	100	125
1.5	1200	600	400	300	200	120	75	60	48	37	30	24	19	15	12	10
2.5		1000	666	500	333	200	125	100	80	62	50	40	32	25	20	16
4			1066	800	533	320	200	160	128	100	80	64	51	40	32	26
6				1200	800	480	300	240	192	150	120	96	76	60	48	38
10						800	500	400	320	250	200	160	127	100	80	64
16							800	640	512	400	320	256	203	160	128	102
25									800	625	500	400	317	250	200	160
35										875	700	560	444	350	280	224
50												760	603	475	380	304

Fig. F42 – Maximum circuit lengths (in meters) for different sizes of copper conductor in a 230/400 V single-phase or three-phase TN system with m = 1, protected against indirect contact by circui-breakers type B

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F43 - Tab1161

Sph	Rated current (A)
mm2	1	2	3	4	6	10	16	20	25	32	40	50	63	80	100	125
1.5	600	300	200	150	100	60	37	30	24	18	15	12	9	7	6	5
2.5		500	333	250	167	100	62	50	40	31	25	20	16	12	10	8
4			533	400	267	160	100	80	64	50	40	32	25	20	16	13
6				600	400	240	150	120	96	75	60	48	38	30	24	19
10					677	400	250	200	160	125	100	80	63	50	40	32
16						640	400	320	256	200	160	128	101	80	64	51
25							625	500	400	312	250	200	159	125	100	80
35							875	700	560	437	350	280	222	175	140	112
50									760	594	475	380	301	237	190	152

Fig. F43 – Maximum circuit lengths (in metres) for different sizes of copper conductor in a 230/400 V single-phase or three-phase TN system with m = 1, protected against indirect contact by circui-breakers type C

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F44 - Tab1162

Sph	Rated current (A)
mm2	1	2	3	4	6	10	16	20	25	32	40	50	63	80	100	125
1.5	429	214	143	107	71	43	27	21	17	13	11	9	7	5	4	3
2.5	714	357	238	179	119	71	45	36	29	22	18	14	11	9	7	6
4		571	381	286	190	114	71	80	46	36	29	23	18	14	11	9
6		857	571	429	286	171	107	120	69	54	43	34	27	21	17	14
10			952	714	476	284	179	200	114	89	71	57	45	36	29	23
16					762	457	286	320	183	143	114	91	73	57	46	37
25						714	446	500	286	223	179	143	113	89	71	57
35							625	700	400	313	250	200	159	125	80	100
50								848	543	424	339	271	215	170	136	109

Fig. F44 – Maximum circuit lengths (in metres) for different sizes of copper conductor in a 230/400 V single-phase or three-phase TN system with m = 1, protected against indirect contact by circui-breakers type D

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F51 - Tab1163

Minimum functions required	Components and devices	Examples
Protection against overvoltages at power frequency	(1) Voltage limiter	Cardew C
Neutral earthing resistor (for impedance earthing variation)	(2) Resistor	Impedance Zx
Overall earth-fault monitor with alarm for first fault condition	(3) Permanent insulation monitor PIM with alarm feature	Vigilohm IM10 or IM400
Automatic fault clearance on second fault and protection of the neutral conductor against overcurrent	(4) Four-pole circuit-breakers (if the neutral is distributed) all 4 poles trip	Compact circuit-breaker or RCD-MS
Location of first fault	(5) With device for fault-location on live system, or by successive opening of circuits	Vigilohm XGR+XRM or XD312 or XL308

Fig. F51 – Essential functions in IT schemes and examples with Schneider Electric products

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F57 - Tab1164

Circuit	Conductor material	m = Sph/SPE (or PEN)
		m = 1	m = 2	m = 3	m = 4
3 phases	Copper	0.86	0.57	0.43	0.34
	Aluminium	0.54	0.36	0.27	0.21
3ph + N or 1ph + N	Copper	0.50	0.33	0.25	0.20
	Aluminium	0.31	0.21	0.16	0.12

Fig. F57 – Correction factor to apply to the lengths given in tables F41 to F44 for IT systems

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- Tab1165

Influence of the electrical network	Disturbed network	Super-immunized residual current protections Type A SI:	Super-immunized residual current protections SI:	Super-immunized residual current protections SI: + Appropriate additional protection (sealed cabinet or unit)	Super-immunized residual current protections SI: + Appropriate additional protection (sealed cabinet or unit + overpressure)
	Clean network	Standard immunized residual current protections Type AC
Presence of corrosive or polluting substances(IEC 60364-5-51)		Negligible presence	Significant presence of atmospheric origin	Intermittent or accidental subjection to corrosive or polluting chemical substances	Continuous subjection to corrosive or polluting chemical substances
Severity level		AF1	AF2	AF3	AF4
Characteristics required for selection and erection of equipment		Normal.	According to the nature of substances (for example, compliance to salt mist test according to IEC 60068-2-11)	Protection against corrosion according to equipment specification	Equipment specially designed according to the nature of substances

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F70 - Tab1165

Examples of exposed sites	External influences
Iron and steel works.	Presence of sulfur, sulfur vapor, hydrogen sulfide.
Marinas, trading ports, boats, sea edges, naval shipyards.	Salt atmospheres, humid outside, low temperatures.
Swimming pools, hospitals, food & beverage.	Chlorinated compounds.
Petrochemicals.	Hydrogen, combustion gases, nitrogen oxides.
Breeding facilities, tips.	Hydrogen sulfide.

Fig. F70 – External influence classification according to IEC 60364-5-51 standard

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F71 - Tab1166

Device type	Nuisance trippings	Non-trippings
	High frequency leakage current	Fault current		Low temperatures (down to - 25°C)	Corrosion Dust
		Rectified alternating	Pure direct
AC	[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]
A	[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]	[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]		[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]
SI	[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math] [math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math] [math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]	[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]		[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]	[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]
B	[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math] [math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math] [math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]	[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]	[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]	[math]\displaystyle{ \definecolor{bggrey}{RGB}{234,234,234}\pagecolor{bggrey}\definecolor{myblue}{rgb}{0.26,0.71,0.9}\color{myblue}\blacksquare }[/math]

Fig. F71 – Immunity level of Schneider Electric RCDs

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F72 - Tab1167

Disturbance type	Rated test wave	Immunity Acti 9, ID-RCCB, DPN Vigi, Vigi iC60, Vigi C120, Vigi NG125 SI type
Continuous disturbances
Harmonics	1 kHz	Earth leakage current = 8 x I∆n
Transient disturbances
Lightning induced overvoltage	1.2 / 50 µs pulse (IEC/EN 61000-4-5)	4.5 kV between conductors 5.5 kV / earth
Lightning induced current	8 / 20 µs pulse (IEC/EN 61008)	5 kA peak
Switching transient, indirect lightning currents	0.5 µs / 100 kHz “ring wave” (IEC/EN 61008)	400 A peak
Downstream surge arrester operation, capacitance loading	10 ms pulse	500 A
Electromagnetic compatibility
Inductive load switchings fluorescent lights, motors, etc.)	Repeated bursts (IEC 61000-4-4)	5 kV / 2.5 kHz 4 kV / 400 kHz
Fluorescent lights, thyristor controlled circuits, etc.	RF conducted waves (level 4 IEC 61000-4-6) (level 4 IEC 61000-4-16)	30 V (150 kHz to 230 MHz) 250 mA (15 kHz to 150 kHz)
RF waves (TV & radio, broadcact, telecommunications,etc.)	RF radiated waves 80 MHz to 1 GHz (IEC 61000-4-3)	30 V / m

Fig. F72 – Immunity to nuisance tripping tests undergone by Schneider Electric RCDs

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F74 - Tab1168

Measures	Diameter (mm)	Sensitivity diminution factor
Careful centralizing of cables through the ring core		3
Oversizing of the ring core	ø 50 → ø 100	2
	ø 80 → ø 200	2
	ø 120 → ø 300	6
Use of a steel or soft-iron shielding sleeve	ø 50	4
Of wall thickness 0.5 mm	ø 80	3
Of length 2 x inside diameter of ring core	ø 120	3
Completely surrounding the conductors and overlapping the circular core equally at both ends	ø 200	2

These measures can be combined. By carefully centralizing the cables in a ring core of 200 mm diameter, where a 50 mm core would be large enough, and using a sleeve, the ratio 1/1000 could become 1/30000.

Fig. F74 – Means of reducing the ratio IΔn/Iph (max.)

Notes

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