Catalog LV 70 2011 - Low & Medium Voltage - Siemens

CD-K System — 25 ... 40 A
© Siemens AG 2011
General data
3
Type CD-K-1402 CD-K-1403 CD-K-1404 CD-K-2404 (/2)
Conducting paths
Rated insulation voltage U i V AC/DC 400/400 400/400 400/400 400/400
Overvoltage category/pollution degree III/3 III/3 III/3 III/3
Rated operational voltage U e V AC 400 400 400 400
Frequency Hz 50 ... 60 50 ... 60 50 ... 60 50 ... 60
Rated current I n A 40 40 40 2 × 40
Impedance of conducting paths
at 50 Hz and 20 °C busbar temperature
• Resistance R 20 mΩ/m 3.55 3.55 3.55 3.69
• Reactance X 20 mΩ/m 0.40 0.40 0.40 0.13
• Impedance Z 20 mΩ/m 3.57 3.57 3.57 3.69
Impedance of conducting paths
under event of a fault
• AC resistance R F mΩ/m 5.61 5.61 5.61 4.17
• Reactance per unit length X F mΩ/m 0.80 0.80 0.80 0.40
• Impedance per unit length Z F mΩ/m 5.67 5.67 5.67 4.18
Zero sequence impedance acc. to IEC/EN 60909 (VDE 0102)
• Resistance R 0 Phase to N mΩ/m 14.85 14.85 14.85 14.33
• Reactance X 0 Phase to N mΩ/m 0.99 0.99 0.99 0.78
• Impedance Z 0 Phase to N mΩ/m 14.88 14.88 14.88 14.33
• Resistance R 0 Phase to PE mΩ/m 9.87 9.87 9.87 5.15
• Reactance X 0 Phase to PE mΩ/m 1.02 1.02 1.02 0.74
• Impedance Z 0 Phase to PE mΩ/m 9.92 9.92 9.92 5.21
Short-circuit strength
Rated peak withstand current I pk kA 3.6 3.6 3.6 3.6
Rated short-time withstand current I cw (t = 1 s) kA 0.85 0.85 0.85 0.85
Rated short-time withstand current I cw (t = 0.1 s) kA 2.4 2.4 2.4 2.4
Conductors
Number of active conductors 2 3 4 2 × 4 (1 × 4, 1 × 2)
Conductor cross-section
• L1, L2, L3 mm 2 5.0 5.0 5.0 5.0
•N mm 2 5.0 5.0 5.0 5.0
• PE (enclosure) r Cu mm 2 11 11 11 11
Conductor material Cu Cu Cu Cu
Fire load kWh/m 0.12 0.18 0.24 0.48
Max. thermal load, I 2 t value A 2 s × 10 3 720 720 720 720
Fixing intervals
m 3 3 3 3
at normal mechanical load
Position of tap-off points
Depending on the type: on one side at 0.5 m or 1 m intervals, on both sides at 0.5 m
intervals or alternating from side to side and offset at 0.5 m intervals
Feeder units, conductor cross-sections
Version Type L1, L2, L3 N PE
Tap-off plugs
min.
mm 2
max.
mm 2
Entry feeder units CD-K-...-EA 2.5 6 (f)
10 (so, st)
End feeder units CD-K-...-EE 2.5 6 (f)
10 (so, st)
min.
mm 2
max.
mm 2
2.5 6 (f)
10 (so, st)
2.5 6 (f)
10 (so, st)
f = finely stranded with end sleeve, so = solid, st = stranded
Type
CD-K-A...
Version
3- or 5-pole
Rated current I n A 10 or 16
Switching capacity according to IEC/EN 60947-3
• Utilization category
AC-20B
Connection
Without or with permanently attached cable;
the PE operates as a leading contact during connection and
as a lagging contact during removal
Fuses
Without or with fuse base for cylindrical fuses 8.5 mm × 31.5 mm;
type gG (IEC) or gL (VDE) quick
min.
mm 2
max.
mm 2
2.5 6 (f)
10 (so, st)
2.5 6 (f)
10 (so, st)
3/8 Siemens LV 70 · 04/2011