Catalog LV 70 2011 - Low & Medium Voltage - Siemens

© Siemens AG 2011
CD-K System — 25 ... 40 A
Introduction
Version
Type-tested low-voltage switchgear and controlgear assembly
(TTA) according to
• IEC/EN 60439-1
• IEC/EN 60439-2
Degree of protection
• High degree of protection to IP54 of the standard version
• Increase to IP55 with accessories
Components
■ Design
Trunking units
NSV0_00001
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2
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Trunking units
• 3-, 4-, 5- and 3/5-conductor system
• Equipment on one side:
-2 or 3 tap-off plugs spaced 1 m apart
-5 outgoing feeders spaced 0.5 m apart
• Equipment on two sides:
-2, 3 or 5 outgoing feeders spaced 1 m apart
-2, 3 or 5 outgoing feeders spaced 0.5 m apart
• Lengths of 2 m and 3 m
• Plug-in connection
• Codable tap-off points
Feeder units
• Entry feeder units
• End feeder units
Tap-off plugs
• 3-pole, 10 A and 16 A, Lx (phase can be changed over
optionally to L1, L2, L3 ), N and PE
• 5-pole, 10 A and 16 A, L1, L2, L3, N, PE
Optional equipment
• End flange
• Fixing bracket
• Suspension hook
• Suspension brackets
• Cable fixture
• Coding sets
• Degree of protection IP55
■ Benefits
7 Lower planning costs through simple configuration
7 Time-saving mounting through plug-in quick connector
7 Tap-off points on both sides for optimized utilization of the busbar
line
7 Uniform current loading of the conductors through splitting of
the tap-off plugs among the individual phases
7 Tap-off plugs allow fast and flexible load relocation
7 Accessories for increasing the degree of protection to IP55 for
extreme ambient conditions
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Locating section
Connection terminal
Tap-off point
The trunking units are available in 2 and 3 meter lengths. They
comprise a square, tin-plated metal enclosure painted graywhite.
They are equipped with insulated circular conductors on one or
two sides:
• 2 conductors for L1 + N (PE = enclosure), one-side
• 3 conductors for L1 + L2 + N (PE = enclosure), one-side
• 4 conductors for L1 + L2 + L3 + N (PE = enclosure), one-side
or two-side
• 2 conductors for L3 + N (PE = enclosure) and
4 conductors for L1 + L2 + L3 + N (PE = enclosure).
Single conductor run:
tap-off points at intervals
of 0,5 or 1 m
The tap-off points are arranged evenly on the trunking unit at a
distance of 0.5 or 1 m apart.
The trunking unit enclosure acts as the PE conductor. Three current
intensities are available: 2 × 25 A, 30 A, 40 A and 2 × 40 A.
All trunking units are equipped with finger-safe tap-off points.
The tap-off points can be subsequently coded.
Connection technology
The trunking units, including those with feeder units and end
flanges, are assembled without tools by straightforward plug-in
connection. The PE path is established automatically when the
enclosures are connected.
An interlock mechanism with two fixings prevents a loosening of
the connections between the trunking units, feeder units and
flanges. Two fixings prevent the connection from becoming undone.
No expansion compensation is required.
NSV0_00002
Two conductor runs:
tap-off points at intervals
of 0,5 or 1 m
NSV0_00003
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Siemens LV 70 · 04/2011
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