NEC Neax 2400 Ipx Installation Manual

							NDA-24306 CHAPTER 3
Page 83
Revision 1.0
Figure 008-2  Connection of Power and Ground Cables to Power Receiving Terminal
NAP-200-008
Sheet 3/12
Connection of Power and Ground Cables 
from the Power Equipment
Note 1:For 1/2 PIM configuration, connect the cable only to the A terminal.
Note 2:An example of End Jointing (using A Type-Clamp terminal) is explained in Section 3 of this NAP.
+80V:Terminal
-48V:B Terminal
G:B Terminal
-48V:A Terminal
G:A Terminal
FE Terminal
POWER AND GROUND CABLES
POWER RECEIVING TERMINAL
REAR VIEWBASE-U
PIM0
Note 1
LPM/TSWM/DUMMY 
						

							CHAPTER 3 NDA-24306
Pag e 8 4
Revision 1.0
2. CONNECTION OF DC-DC CONVERTER FOR TELEPHONE SETS EQUIPPED WITH
MESSAGE WAITING LAMPS
NAP-200-008
Sheet 4/12
Connection of Power and Ground Cables 
from the Power Equipment
START
Cable Running Referring to Figure 008-3, run the power and ground 
cables.
Removal of shorting piece and cable 
connectionReferring to Figure 008-4, remove the shorting piece 
from the +80 V connector of PZ-M371 card, then 
connect the cable provided on the +80 V Power 
Receiving Terminal Block to the +80 V connector.
Confirm that the Circuit Breaker (NFB) of the Rectifier is OFF.
Connection of Power and Ground 
CablesReferring to Figures 008-3 and 008-4, connect the 
power and ground cable to each terminal of the 
equipment.
Check  after  cable  connections Using a continuity tester, confirm that the –48 V and 
+80 V power cable are not short-circuiting with the 
G power cable or FE ground cables.
END 
						

							NDA-24306 CHAPTER 3
Page 85
Revision 1.0
Figure 008-3  Example Connection Diagram-DC-DC Converter for Message Waiting Lamps
NAP-200-008
Sheet 5/12
Connection of Power and Ground Cables 
from the Power Equipment
Note:The current capacity of the DC-DC Converter is calculated by multiplying the (current capacity of the
message waiting lamp) by the number of telephone sets.
PBX
IV(WHITE)+80V
DC-DC 
CONVERTER
OUTPUT
INPUT G +80V
G –48V
IV(BL)
IV(R)
IV(G) TO RECTIFIERF 
G 
						

							CHAPTER 3 NDA-24306
Pag e 8 6
Revision 1.0
Figure 008-4  Removal of Shorting Piece and Cable Connection
NAP-200-008
Sheet 6/12
Connection of Power and Ground Cables 
from the Power Equipment
BASEU Power Receiving Terminal Block
Remove the shorting piece
Connect the Cable to the +80V Connector of PZ-M371 cardPZ-M371
+80V +80V
Powe r C a bl e 
						

							NDA-24306 CHAPTER 3
Page 87
Revision 1.0
3. END JOINTING OF POWER AND GROUND CABLES
NAP-200-008
Sheet 7/12
Connection of Power and Ground Cables 
from the Power Equipment
START
Stripping of Insulation Sheath Strip the wire to exceed the length of the terminal body 
by 1 - 2 mm (1/8 inch).
Clamping Referring to Figure 008-5, place the terminal body on 
the die with the soldered part facing upward.
Referring to Figure 008-6, insert the stripped wire into 
the terminal body up to the insulation-sheath edge, and 
clamp the terminal.
Wipe the terminal with a dry cloth.
END
WIRE SHEATH
CONDUCTOR
CLAMP TERMINAL
1 - 2 mm 
						

							CHAPTER 3 NDA-24306
Pag e 8 8
Revision 1.0
Figure 008-5  Placing the Clamp Terminal on the Die
Figure 008-6  Clamping Method
NAP-200-008
Sheet 8/12
Connection of Power and Ground Cables 
from the Power Equipment
CONVEX DIE
SOLDERED PART
TERMINAL
CONCAVE DIE
1/8 inch (1 - 2mm)
CONVEX DIE
A
A
INSULATION SHEATH
TERMINAL
CONCAVE DIE
SOLDERED PART
CLAMPED PORTION
CLAMPED PORTION
CONDUCTOR
A-A 
						

							NDA-24306 CHAPTER 3
Page 89
Revision 1.0
4. BRANCHING OF POWER CABLES
NAP-200-008
Sheet 9/12
Connection of Power and Ground Cables 
from the Power Equipment
START
Stripping Main and Branch Cable Referring to Figure 008-7, strip insulation coating with 
an electrician’s knife. Avoid damage to the conductor 
during the stripping process.
Inserting of Cables into Terminal Insert the stripped main wire and branch wire into the 
terminal as shown in Figure 008-8.
Clamping for Branch Jointing Place T-Type terminal on the die of the clamping tool, 
T-20 - T-44 terminals should be placed on the center of 
the die.
T-60 - T-365 terminals should be placed on the die in 
such a way that the terminal will be pressed on the part 
marked with the roulette.
Proceed with the operation of the clamping tool by 
referring to Figure 008-9.
Clean the terminal with a dry cloth.
Taping and Covering Referring to Figures 008-10 and 008-11, put an 
installation cover over the clamped portion, after taping 
with installation tape.
END
3 ROULETTES 
T-154-T-365 NO ROULETTE 
T-20-T-442 ROULETTES 
T-60-T-122 
						

							CHAPTER 3 NDA-24306
Pag e 9 0
Revision 1.0
Figure 008-7  Stripped Length of Main and Branch Cable
NAP-200-008
Sheet 10/12
Connection of Power and Ground Cables 
from the Power Equipment
Table 008-1  Stripped Length
APPLICABLE TERMINALSTRIPPED MAIN-WIRE LENGTH I
1
[inch (mm)]STRIPPED MAIN-WIRE LENGTH I
2
[inch (mm)]
T-20 Approx. 1.2 (28) Approx. 1.0 (24)
T-26 1.3 (32) 1.2 (28)
T-44 1.5 (37) 1.3 (33)
T-60 1.6 (40) 1.5 (36)
T-76 1.7 (42) 1.6 (39)
T-98 1.8 (44) 1.7 (41)
T-122 1.7–1.9 (43–46) 1.6–1.7 (40–43)
T-154 2.0 (49) 1.9 (46)
T-190 2.3 (57) 2.2 (54)
T-240 2.5 (63) 2.4 (60)
T-288 2.8 (69) 2.6 (66)
T-365 3.0 (75) 2.9 (72)
T- 9 8
Sum of the cross sections of the main and branching, or the main and extension cables.
Type of clamp terminal (T type)
I 1
MAIN CABLE
CONDUCTOR
BRANCH CABLE
I 2
T TYPE 
CLAMP- 
TERMINAL 
						

							NDA-24306 CHAPTER 3
Page 91
Revision 1.0
Figure 008-8  Inserting of Cables into Terminal
Figure 008-9  Clamping for Branch Jointing
NAP-200-008
Sheet 11/12
Connection of Power and Ground Cables 
from the Power Equipment
 1/8 inch (1 - 2 mm)
BRANCH 
CABLEMAIN CABLE
BEND PRIOR TO INSERTION
T TYPE 
TERMINAL
Note:• Prevent the wires from slipping out of the clamp termi-
nal by holding them firmly.
 Check the indication of the pressure regulator.
 Operate the pressure release lever to release the wires
from the die.
CLAMPED PORTION
DIET TYPE 
TERMINAL
CONDUCTOR 
(MAIN AND 
BRANCH CABLE) 
						

							CHAPTER 3 NDA-24306
Pag e 9 2
Revision 1.0
Figure 008-10  Taping
Figure 008-11  Covering
NAP-200-008
Sheet 12/12
Connection of Power and Ground Cables 
from the Power Equipment
Note:Taping should be done in two rounds with the tape
overlapping half the tape width.
INSULATION TAPE
0.4- 1.2 in. ABOVE 0.4 in. (10 mm)
(10 - 30 mm)
INSULATION COVER