Catalog LV 70 2011 - Low & Medium Voltage - Siemens

NSV0_00124
BD2 System — 160 ... 1250 A
© Siemens AG 2011
Introduction
Distribution board feeder units
For BD2 connection to a distribution board.
N L1 L2 L3 PE
NSV0_00129
BD2.-...-VE distribution board feeder unit
Center feeder units
Cable entry is possible from three sides. The phase sequence
can be changed on site by rotating the busbar pack.
BD2.-...-ME center feeder units (PE left and PE right)
NSV0_00125
NSV0_00127
BD2-AK1/CEE165A163
Sheet steel enclosed BD2-AK2 tap-off units up to 63 A and BD2-
AK3 up to 125 A with cover-integrated switch-disconnector
Features:
• Sheet-steel enclosure, hot-galvanized and powder coated
cover, color light gray, RAL 7035
• The tap-off units can be mounted and removed only with their
cover open.
• Switch-disconnector integrated into the cover, switching capacity
at 63 A AC-22B up to 400 V or at 125 A AC-21B, which
ensures that the unit is not live when the cover is open.
• Unintentional closing of the cover can be prevented by fitting
a padlock
• An anti-rotation feature prevents incorrect mounting.
• Cables can be introduced from three sides; use plastic cable
glands with strain relief (not in scope of supply).
• Power pick-up via silver-plated lyre-shaped contacts.
• If the PE conductor is used as a PEN conductor, note that the
PE contact of the BD2-AK3... tap-off units have only half the
cross-section and therefore cannot carry the full rated current.
• The connecting cable should be supported separately if necessary.
Device installation unit:
For the installation of devices (e.g. miniature circuit breakers)
based on DIN 43871, with 8 MW. 1 MW corresponds to a space
requirement of 18 mm. Hinged covers on all tap-off units allow
device operation from outside.
5
BD2.-...-ME center feeder units (PE rear and PE front)
Tap-off units
Tap-off units are available in a number of versions for different
applications.
BD2-AK1 molded plastic-enclosed tap-off units up to 25 A,
freely assignable, with fuses, miniature circuit breakers and
socket outlets
Features:
• Molded-plastic enclosure, color light gray, similar to RAL 7035
• Transparent cover for the protective devices
• When mounting and disassembling the tap-off units, a load
switching ability of AC-22B up to 400 V is achieved
• An anti-rotation feature prevents incorrect mounting
• Power pick-up through silver-plated lyre-shaped contacts
• Cables can be introduced from three sides
• The tap-off unit must be removed from the trunking before the
unit can be opened and the cables connected
• Built-in strain relief
• The connecting cables should be supported separately if required
NSV0_00200
BD2-AK2M2/A323
BD2-AK02 tap-off units up to 63 A, freely assignable,
with fuses, miniature circuit breaker and socket outlets
Features:
• Miniature circuit breakers can be externally operated if
required (device installation unit with 8 MW; 1 MW = 18 mm)
NSV0_00135
BD2-AK2X/CEE325S33
5/8 Siemens LV 70 · 04/2011