Datasheet
,
610
PHOENIX CONTACT
Rated surge voltages for equipment that is directly supplied by the low-voltage
network (extract from Table 1)
Nominal voltage of the power supply system
1
) (mains) acc. to IEC 60038
3
)
Conductor-neutral conductor voltage
derived from the total nominal AC
voltage or nominal DC voltage
Rated surge voltage
2
)
[V]
Three-phase Single-phase Surge voltage category
4
)
[V] [V] [V] I II III IV
120 to 240
50 330 500 800 1500
100 500 800 1500 2500
150 800 1500 2500 4000
230/400 277/480 300 1500 2500 4000 6000
400/690 600 2500 4000 6000 8000
1000 1000 4000 6000 8000 12000
1
) Refer to Appendix B for application in existing deviating low-voltage networks and their nominal voltages.
2
) Equipment with this rated surge voltage may be used in systems according to IEC 60364-4-443.
3
) The slash, i.e., /, indicates a three-phase four-conductor system. The lower value is the conductor-to-neutral conductor voltage,
whereas the higher value is the conductor-to-conductor voltage. When only one value is specified, it refers to a three-phase three-
conductor system, and indicates the conductor-to-conductor voltage.
4
) Refer to 2.2.2.1.1 for an explanation of surge voltage categories.
Minimum clearances for surge voltages (extract from Table 2)
Required rated
impulse voltage
1
)
5
)
Condition A
Non-homogeneous field (refer to 3.15)
Condition B
Homogeneous field (refer to 3.14)
Pollution degree
6
) Pollution degree
6
)
1 2 3 1 2 3
[kV]
[mm] [mm] [mm] [mm] [mm] [mm]
0.33
2
)
0.01
0.2
3
)
4
) 0.8
4
)
0.01
0.2
3
)
4
) 0.8
4
)
0.40 0.02 0.02
0.5
2
)
0.04 0.04
0.60 0.06 0.06
0.80
2
)
0.10 0.10
1.0 0.15 0.15
1.2 0.25 0.25 0.2
1.5
2
)
0.5 0.5 0.3 0.3
2.0 1.0 1.0 1.0 0.45 0.45
2.5
2
)
1.5 1.5 1.5 0.6 0.6
3.0 2.0 2.0 2.0 0.8 0.8
4.0
2
)
3 3 3 1.2 1.2 1.2
5.0 4 4 4 1.5 1.5 1.5
6.0
2
)
5.5 5.5 5.5 2 2 2
8.0
2
)
888333
10 11 11 11 3.5 3.5 3.5
12
2
)
14 14 14 4.5 4.5 4.5
15 18 18 18 5.5 5.5 5.5
20 25 25 25 8 8 8
25 33 33 33 10 10 10
30 40 40 40 12.5 12.5 12.5
40 60 60 60 17 17 17
50 75 75 75 22 22 22
60 90 90 90 27 27 27
80 130 130 130 35 35 35
100 170 170 170 45 45 45
1
) This voltage is:
– For function insulation: the highest surge voltage expected for the clearance
– For basic insulation, if influenced directly or considerably by surge voltages from the low-voltage network:
the rated surge voltage of the equipment
– For a different basic insulation: the highest impulse voltage possible in the circuit
2
) Preferred values
3
) For PCBs, the values of pollution degree 1 are applicable, except that no deviation below the value of 0.04 mm is permitted, as
specified in Table 4.
4
) Minimum clearances for pollution degrees 2 and 3 are based on the corresponding creepage distances. This resistance is reduced due
to the effects of humidity.
5
) Values can be interpolated for parts or circuits within equipment that are subjected to impulse voltages.
6
) The distances for pollution degree 4 are equal to those for pollution degree 3, except that the minimum clearance is 1.6 mm.
Schematic for determining clearances
Altitude correction factors
(extract from Table A.2)
Height
in m
Normal air pressure
in kPa
Multiplication factor
for gaps
2000
3000
4000
80.0
70.0
62.0
1.00
1.14
1.29
5000
6000
7000
54.0
47.0
41.0
1.48
1.70
1.95
8000
9000
10000
35.5
30.5
26.5
2.25
2.62
3.02
15000
20000
12.0
5.5
6.67
14.50
Dimensioning of clearances
Nominal voltage of the
power supply
Rated
surge
voltage
Rated surge voltage
according to Table 1
Surge
voltage
category
Minimum clearance L
according to Table 2
Pollution
degree
Height
> 2000 m
above sea
level
Multiply L with altitude
correction factor
according to Table A2
Impulse
voltage test
No
Rating acc.
to case A
Yes
Clearance L
Technical information
Quality tests