H3C S12500 Installation Manual page 149

Table 62 Information on labels affixed to DC power cords
Content Meaning
•
MN(BC)-–48Vn
•
MN(BC)-RTN
MN(BC)-PGND
•
The label only carries location information about the peer equipment, control cabinet, or distribution
box, while the information of the local end is not necessary.
power supplies on the label. The information for other DC voltages (such as 24V, 60V) should be
given in similar methods.
Make sure labels are affixed in the correct direction. After the cable ties are bundled onto the cable,
the identification plates with the labels should face up, and the text on the labels in the same cabinet
should be in the same direction, as shown in
Figure 113 Example of labels on a DC power cord
•
A01/B08––48V2 (loaded cabinet side)—The power cord is –48V2 DC supply, which is from
the 8th connecter on the second row of –48V bus bar in the cabinet on Row A, and Column 1 in
the equipment room.
•
B03––48V2 (distribution box side)—The power cord is –48V2 DC supply, which is from the
loaded cabinet on Row B, Column 03 in the equipment room.
In the power distribution box (or the first power cabinet of a row in the transmission equipment room),
every terminal block on the –48V connector bar has a numeric identification. For example, in the
above label of "A01/B08--48V2", "08" (or sometimes "8") is the numeric identification of the terminal
block.
PGND and RTN are two copper bars, on which the terminal blocks are short-circuited, so which
terminal is connected makes no difference. You only need to give the row and column numbers of the
power distribution box, instead of giving the specific serial number of the terminal block on the
copper bar. For example, if the label on the loaded cabinet side is "A01-RTN", it means that the
power cord is an RTN that connects RTN copper bar in the power distribution box on Row A, Column
01 in the equipment room. Information on the labels for PGND cables should be given in the similar
way.
Loaded cabinet side—Only MN is used to identify the cabinet number (row
number and column number in the equipment room).
Power cabinet side—MN identifies the row and column number of the power
distribution equipment like the control cabinet and distribution box. BC identifies the
row and column number of the –48V connector (if there is no row number or column
number, or the connector can be identified without them, BC can be omitted). RTN
and PGND have no row and column number for identification.
n—Power port number in down-top and left-right order, in the range of 1 to 3.
141
Table 62
Figure 113.
lists the information of two –48V