Main distribution frame 91 M
The frame model of choice, 1200 pairs, based on 10-pair LSA PROFIL modules on both the system and the line sides.

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Modular, space-saving design
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Optimum adaptation to available space
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Short assembly time since the rack is pre-assembled

When required, the frame can also be equipped with back-mount frames for LSA-PLUS or MDF 71 components (mounting dimension: 290/210mm).
In this frame model the modules on both the line and system sides are arranged vertically above each other on one profile frame. This layout makes jumpering possible within the same vertical.
The standard frame comes with a 250mm space between verticals; it is basically available as a 2-vertical frame for vertical mounting of the components.
MDF 91 M frames consist of powder-coated (colour: grey; RAL 7032) steel sections; the profile frames are made of stainless steel. All the components of the frame and the profile frames, as well as all frame accessories, are connected to a common earth potential.
Connection points for an FPE cable (min. cross-section:
50mm 2 copper) to the earthing conductor are accessible at the top and bottom of the jumper bar of the frame.
The total maximum connection capacity per distribution frame of the preferred variant is 1200 pairs (2 x 600 pairs) for the system and line sides. The following overview contains other rack sizes and their capacity figures. Distribution frames can be combined to form banks of any length. Note, however, that the total jumpering capacity of the horizontal jumper guides is around 4000 pairs (jumper diameter: 0.9mm).

The MDF 91 M can be configured for the following design variants:
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Wall-floor frame
(standing distribution frame, secured to the wall)
q
Standing distribution frame, single-sided
(free-standing distribution frame, secured to the ceiling)
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Standing distribution frame, double-sided
(free-standing distribution frame, secured to the ceiling, with frames bolted back to back).
MDF 91 M with profile frame (d = 46mm), equipped
Capacity overview (number of modules)

Available rack units
(extendable)
LSA PROFIL-      
modules 2/10
and 2/6 x 3
LSA PROFIL-      
modules 2/8-951)
LSA PROFIL-     
disconnection module
2/8 x abs2)
LSA-PLUS-      
modules 2/8
and 2/103)
Module 71     
Frame height
1000 pairs
100
100
-
100
10
2050 mm
1200 pairs(preferred version)
120
120
100
120
12
2325 mm
1600 pairs
160
160
-
160
16
2887 mm

1)    for connection of 8 pairs, fixing dimension: 95 mm
2)    Only for MDF 91 M with deep profile frames
3)    backmount frames must be ordered separately

Order
data:
 
 
Order No.
Description
Weight/Pack
Pack
Basic- and extension rack 2 x 600 pairs (preferred variant)
6577 1 080-01
MDF 91 M LSA PROFIL
with profile frame (d = 46mm)
42.600kg
1 piece
6577 1 090-01
MDF 91 M LSA PROFIL
with profile frame (d = 86mm)
43.000kg
1 piece
6577 1 080-00
MDF 91 M BMF
without profile frame; for 2 x 6 back-mount frames; pitch: 25mm/11 modules
39.000kg
1 piece
6577 1 080-02
MDF 91 M - 71
without profile frame; for MDF 71 switching equipment
35.000kg
1 piece
6577 1 019-00
Jumper row for rack components 1200 pairs
5.550 kg
1 piece
Basic - and extension rack 2 x 500 pairs
6577 1 083-01
MDF 91 M LSA PROFIL
with profile frame (d= 46mm)
1 piece
6577 1 083-02
MDF 91 M - 71
without profile frame for MDF 71 switching equipment
1 piece
6577 1 078-00
Jumper row for rack components 1000 pairs
1 piece
Basic- and extension rack 2 x 800 pairs
6577 1 081-01
MDF 91 M LSA PROFIL
with profile frame (d= 46mm)
1 piece
6577 1 076-00
Jumper row for rack components 1600 pairs
1 piece
 
Additional accessories required
 
 
 
Rack components comprising a basic MDF 91M unit

Order No.   
Item   
Description
Quantity
MDF accessories
Wall-mounted   
frame
piece
Free-standing   
frame  
single-sided
piece
Free-standing   
frame  
double-sided
piece
6577 1 xxx-xx
2
Jumper row
11)
12)
2
6577 2 800-00
3
End piece, right-hand side2)
1
1
2
6577 2 801-00
4
End piece, left-hand side2)
1
1
2
6577 2 802-00
5
Accessories for free-standing MDF
-
-
1
6577 2 808-00
6
Ceiling fixing rail
-
1
-
6577 2 857-00
7
Wire guide BS-MDF 91M-DF
-
-
9/63)
6577 2 864-00
8
Connecting piece Vt-BS
-
22)
-
6577 2 863-00
9
Wire guide BS-MDF 91 M-U
Insert for an additional, jumpering
bay on the bottom (1 insert max.
per vertical jumpering row) for
wall-floor rack and free-standing rack
double-sided
2
-
6/44)
6577 2 858-00
10
Equipotential earth bar SHN-BS5)
insulated busbar, for the termination
of special cables (1 busbar max. per frame)
1
1
2
6577 2 880-00
11
”C“ clamp BK30-BS6)
6577 2 881-00
”C“ clamp BK26-BS6)
6577 2 882-00
”C“ clamp BK22-BS6)
6577 2 883-00
”C“ clamp BK18-BS6)
6577 2 884-00
”C“ clamp BK14-BS6)
”C“ clamp and backing plate for fixing cable
6577 3 885-00
12
Cabel duct 49x99x1700-KU-GR5)d x w x h (in mm): 49 x 99 x 1700
2
2
4
6563 2 009-02
13
Label holder VT-GR2-KPL5)
component for identifying the
verticals of the rack (2 holders per frame)
2
2
4
6577 2 876-00
14
End piece VT-BS2)
Wall fixing element for kick-bar for
free-standing frame, double-sided (1 piece per frame)
-
-
1

1)    For double-sided jumpering only
2)    For initial installation only
3)    Quantity corresponds to initial installation/extension
4)    Optional: quantity corresponds to initial installation/extension
5)    Optional
6)    Optional: quantity depends on cable type and number of cables

Legend:
3 Label holder
4 End piece
Legend:
‰ Wire guide
Š Equipotential earth bar
Legend:
Rack
‚ Jumper row
ƒ End piece, right-hand side
„ End piece, left-hand side
… Accessories for free-standing distribution frame
† Ceiling fixing rail
‡ Wire guide
ˆ Connection member
Legend:
Š Equipotential earth bar
1 ”C“ clamp
2 Cable duct
Legend:
ΠDimension for first installation
FPE connection (top or bottom, as required)
Ž min.
max.
Standing frame, double-sided
Legend:
ΠDimension for initial installation
FPE connection (top or bottom, as required)
Ž Optional jumper vertical
min. room height
Wall-floor frame
Legend:
ΠDimension for initial installation
FPE connection (top or bottom, as required)
Ž min.
max.
Standing frame, single-sided
Keyword for Index :
Main distribution frame 91 M
KRONE GmbH, Productmanagement, subject to change without notice !
Data from :
06-MAR-2003 15:44:05