Configuration
6.1 Basic knowledge for configuring
SIVACON 8PS - Configuring with LX system
98
Configuration Manual, 10/2011, A5E02194899-02
6.1.4
Tap-off units
Overview
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Sheet steel enclosure, painted
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Five sizes
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Degree of protection IP54, increased to IP55 with installation kit
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To 630 A, can be connected under load
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From 800 A, cannot be connected under load
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When used in TN-C systems, a PEN jumper must always be allowed for in the tap-off unit
up to 630 A (PEN jumper included in scope of delivery).
Sizes and cable entry sides
Size
Tap-off unit with circuit breaker Tap-off unit with fuse switch
disconnector
1
≤ 250 A
≤ 250 A
2
315...630 A
400 A
3
—
630 A
4
800...1250 A
—
Power tap-off, mounting and safety features
Tap-off units of sizes 1 to 3 (to 630 A):
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Tap-off is carried out by means of silver-plated Lyra contacts of the current tap-off system
at the tap-off unit.
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Can be connected under load
1)
, that is, the LX system does not have to be switched off-
load to install or remove the tap-off units.
●
Installing the tap-off units by opening the tap-off unit, fixing on the LX system, connecting
the cable and closing the tap-off unit
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Leading PE or PEN conductor contact
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Anti-rotation feature prevents incorrect mounting
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Touch protection IP20 during the installation procedure at the tap-off point as well as for
all load-carrying parts in the tap-off unit
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Freedom from load thanks to a mandatory sequence of operations when installing and
uninstalling
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Cable insertion safety thanks to partitioning of the current tap-off space from the cable
space.
1)
Please observe national regulations.
