Toshiba Strata Dk14, Dk40i, Dk424 Installation And Maintenance Manual

							DK424 Installation
AC Power Cabling Installation
Strata DK I&M 5/995-31
DK424 Installation
AC Power for Three or More Cabinets (Wall Mount)
Local electrical codes specify that a maximum of one or two AC power cords from the system can 
be plugged into wall outlets. Systems with three or more cabinets must be equipped with power 
strips (RPSB1 or RPSB2) to adhere to this requirement. Each power strip has three outlets and an 
AC power cord.
Three- or four-cabinet systems require one power strip, while five- to seven-cabinet systems 
require two or three power strips, depending on local electrical code requirements pertaining to the 
number of AC power cords (one or two) allowed from the system. 
ä
To install AC power cabling to wall-mounted systems with three or more cabinets
Refer to Figures 5-19~5-22 and follow these steps:
1. Make sure all power supply (RPSU280) switches are in the off position.
2. Secure power strips to applicable cabinets.
3. For AC power cords that will be plugged directly into a wall outlet: Undo the tie wrap that 
keeps the cord coiled. Plug female end of the cord into the power supply, and plug the male 
end into the wall outlet.
4. For AC power cords that will be plugged into power strips: Do not undo the tie wrap that 
keeps the cord coiled. Plug female end of the cord into the power supply, and plug the male 
end into the power strip. Plug the power strip power cord into a wall outlet. 
NotePower Supply testing procedures are provided in Chapter 12 – Fault Finding, which 
should be referred to if it is suspected that the power supply does not work properly.
AC Power for Three or More Cabinets (Floor Mount)
UL specifies that floor-mounted systems with three or more cabinets require the installation of a 
Conduit Connection Box (RCCB1 or RCCB2) to connect AC power cabling (and reserve power) 
to the system. AC power cabling for floor-mounted systems with three or more cabinets requires 
the installation of one or two power strips (RPSB1and RPSB2), depending on the number of 
cabinets installed.
ä
To connect AC power cabling to floor-mounted systems with three or more cabinets
Refer to Figures 5-19~5-19, 5-22, 5-26 and 5-27, and follow these steps:
1. Make sure that the conduit connection box is installed on the bottom cabinet. The box can be 
installed by the regular system installer.
2. Have a licensed electrician install conduit and cabling from the AC power source to the 
conduit connection box and local electrical codes. The remaining steps in this procedure can 
be performed by the regular system installer.
3. Make sure all power supply (RPSU280) switches are in the off position.
4. Secure power strips to applicable cabinets.
5. For each power supply: Plug the female end of the provided AC power cord into the power 
supply, without removing the tie wrap that keeps the cord coiled. Plug the other end of the cord 
into a power strip.
6. Plug power strip power cords into the conduit connection box. 
						

							DK424 Installation
Reserve Power Installation
5-32Strata DK I&M    5/99
Reserve Power Installation
Two or four customer-supplied, 12VDC batteries (80 amp hours maximum) can be connected to 
the system as a power failure backup. In the event of a power failure, the system automatically 
switches over to battery power without any interruption to existing calls or other normal system 
functions. 
The length of time reserve power operates depends on the system, size and number of batteries 
provided, and the system load. Typical reserve power duration estimates and battery specifications 
are estimated with the following considerations (see Table 5-4):
©Batteries have full charge at start of operation.
©Two or four batteries connected per Figure 5-25.
©Batteries are 12VDC, rated at 80 amp/hours each.
©System is operating at full load traffic with LCD phones.
©Batteries used for this test are gel-cell and maintenance-free. Reserve duration will vary 
depending upon battery type, age, and manufacturer. These figures should only be used as an 
estimate.
Table 5-4 Typical Reserve Power Duration Estimate
The procedure for installing reserve power varies, depending on the number of cabinets in the 
system and the mounting method employed in installing the cabinets. The following text details 
reserve power battery installation requirements.
Number of Cabinets1234567
Estimated operation time
Two-battery configuration
16.0 hr 8.0 hr 5.0 hr 3.7 hr 3.0 hr 2.5 hr 0.5 hr
Estimated operation time
Four-battery configuration32.0 hr 16.0 hr 10.0 hr 7.5 hr 6.0 hr 5.0 hr 2.0 hr
DC Current Drain (-24 VDC)3.5 amps 6.7 amps 9.9 amps 13.1 amps 16.3 amps 19.5 amps 22.7 amps
AC Input Current (AC 
Current Limitation by 
National Electric Code)2.5 amps 5.0 amps 7.5 amps 10.0 amps 11.5 amps 15.0 amps 17.5 amps
WARNING! Some batteries can generate explosive gases. Therefore...
Ensure that batteries are located in a well-ventilated area.
Do not smoke near batteries.
Avoid creating any electrical sparks near batteries.
Use commercially available battery enclosures to reduce risk to
nearby people and equipment.
WARNING! Battery cables that exit the cabinet(s) are not UL listed because of 
possible incorrect installations. Have a licensed electrician install these 
cables. 
						

							DK424 Installation
Reserve Power Installation
Strata DK I&M 5/995-33
DK424 Installation
Reserve Power for One or Two Cabinets (Wall Mount)
1. Connect the black jumper wire (supplied with the PBTC-3M cable) from the positive terminal 
of one 12VDC battery to the negative terminal of the second 12VDC battery (Figure 5-20).
2. Ensure that a serviceable 10-amp fuse is installed in the in-line fuse holder of the PBTC-3M 
cable.
3. Connect the PBTC-3M battery cable white lead to the open positive terminal of the 12VDC 
battery. Connect the black lead to the open negative terminal of the second 12VDC battery.
Important!The cabinet(s) must be connected to the (live) AC power source, and the power 
supply ON/OFF switch set to ON prior to the final step of connecting the reserve 
power batteries to the power supply via the BATT+/- receptacle. If the batteries are 
connected after AC power is lost, reserve power will not function.
4. Connect the PBTC-3M battery cable two-prong male plug to the Base Cabinet power supply 
BATT +/- receptacle.
5. Repeat Steps 3 and 4 to connect a PBTC-3M to the Expansion Cabinet.
6. To test reserve power operation, disconnect system AC power plugs with power supply ON/
OFF switches in the ON position. The system should continue to operate without interruption.
NoteIf connecting four batteries, follow the wiring diagram in Figure 5-25.
Reserve Power for Three or More Cabinets (Wall Mount)
1.  Install the Battery Distribution Box (RBDB1A or RBDB2) to the bottom cabinet.
2.Connect two Cable “C” jumper wires from the positive terminal of one 12VDC battery to the 
negative terminal of the second 12VDC battery (Cable “C” is supplied with the RBTC1A-2M 
cable).
3. Ensure that a serviceable 12-amp fuse is installed in the in-line fuse holder of the RBTC1A-
2M battery cable.
4. Connect the white lead of the RBTC1A-1.5M or RBTC2A-1.7M battery cable to the open 
positive terminal of the 12VDC battery. Connect the black lead to the open negative terminal 
of the second 12VDC battery.
5. Connect a second RBTC1A-1.5M or RBTC2A-1.7M in parallel to the first RBTC1A-2M 
cable per Steps 2, 3 and 4 instructions.
6. Plug the two RBTC1A-1.5M or RBTC2A-1.7M battery cables into the Battery Distribution 
Box.
Important!The cabinets must be connected to the (live) AC power source, and the power supply 
ON/OFF switches set to ON prior to the final step of connecting the reserve power 
batteries to the power supplies via the BATT +/- receptacle. If the batteries are 
connected after AC power is lost, reserve power will not function.
7. Connect the RBTC1A-1.5M or RBTC2A-1.7M cables from the Battery Distribution Box to 
the BATT +/- receptacle of individual power supplies (6-RBTC1A-1.5M cables are supplied 
with an RBDB distribution box). RBTC2A-1.7M is required for the seventh cabinet. It must be 
ordered with part number RCTC1A-1.7A. 
8. To test reserve power operation, disconnect the system AC power plugs with the power supply 
ON/OFF switches in the ON position. The system should continue to operate without 
interruption.
NoteIf connecting four batteries, follow the wiring diagrams in Figure 5-25. 
						

							DK424 Installation
Reserve Power Installation
5-34Strata DK I&M    5/99
Reserve Power/AC Wiring for Three or More Cabinets (Floor Mount)
Floor-mounted systems with three or more cabinets require a Conduit Connection Box (RCCB) to 
connect reserve power cabling and AC power cabling to the system. Only a qualified electrician 
can install cabling between the reserve power source and AC power cabling to the conduit 
connection box. All other steps required to install reserve power, including installation of the 
Battery Distribution Box (RBDB), can be accomplished by the normal system installer.
ä
To connect reserve power to floor-mounted systems with three or more cabinets
See Figures 5-23 and 5-26~5-28 and follow these steps:
1. Make sure that the Conduit Connection Box is installed on the bottom cabinet. The box can be 
installed by the regular system installer.
2. Have a licensed electrician install conduit and battery cabling to the Conduit Connection Box 
and local electrical codes. The remaining steps in this procedure can be performed by the 
regular system installer.
3. Install the Battery Distribution Box on the second cabinet (the cabinet directly above the 
bottom cabinet).
4. Plug the two Conduit Connection Box cables (coming from the left side of the RCCB box) 
into the Battery Distribution Box.
Important!The cabinets must be connected to the (live) AC power source, and the power supply 
ON/OFF switches set to ON prior to the final step of connecting the reserve power 
batteries to the power supplies via the BATT +/- receptacle. If the batteries are 
connected after AC power is lost, reserve power will not function.
5. Connect RBTC1A-1.5 and RBTC2A-1.7 cables from the (RBDB or RBDB2) Battery 
Distribution Box to the BATT +/- receptacle of individual power supplies (6 RBTC1A-1.5 
cables come with each RBDB distribution box). RBTC2A-1.7 is a longer cable, required for 
the seventh cabinet. It must be special ordered with part number RCTC1A-1.7M.
6. To test reserve power operation, turn off the system AC power circuit breaker with power 
supply ON/OFF switches in the ON position. The system should continue to operate without 
interruption.
Figure 5-19 Outlet Strip (RPSB1 and RPSB2) Installation
To AC OutletRPSB1 or RPSB2
Outlet Strip
Expansion Cabinet
Cabinet
Bonding Plate
1471 
						

							DK424 Installation
Reserve Power Installation
Strata DK I&M 5/995-35
DK424 Installation
+
+ –
– 12 VOLT 12 VOLT
1
2
3-24VPOWER
+5V
-5V
AC INFGDC OUT
+-
ON
OFF
BATTPBTC-3M
Cable RPSB280 Power Supply - Front View
Right Side View
Battery Box or Rack
Two Jumper to Connect
Batteries in Series
(Supplied With PBTC Cable)
Black Wires White Wires
To Dedicated AC Outlet 
(See Important Note) Two PBTC-3M
Cables Cabinet No. 1
Cabinet No. 2PBTC-3M Cable
to BATT
Connector of
Power Supply
in Cabinet  1
PBTC-3M Cable
to BATT
Connector of
Power Supply
in Cabinet 2
AC
Power
Cord
White Wire
DKSUB ‹
DKSUE ‹
One AC Cord
(see Important note below) RPSB2
(see Important
note below)
1474
Two AC Power 
Cords from 
RPSU280 Power 
Supplies 
(Cabinet 1 and 2)
115VAC ± 10VAC (11.5 Amps Max)
Figure 5-20 AC and Reserve Power, One or Two Cabinets, Wall or Floor-mounted
Important!If local electric code allows only on AC cord from the system, install a RPSB2 in 
the bottom cabinet (per Figure 5-23). Plug power supplies into the RPSB2 and 
plug the RPSB2 into the dedicated wall outlet. 
						

							DK424 Installation
Reserve Power Installation
5-36Strata DK I&M    5/99
CAB 2
CAB 3
CAB 4
CAB 5
CAB 6
CAB 1
RPSB1A RPSB1A
RPSU280A
RPSU280A
AC IN AC IN
RPSU280A
AC IN
RPSU280A
AC IN
RPSU280A
AC IN
RPSU280A MBJU
(see Note below)
Jumper Unit
AC IN
FG FG FG FG FG
FG
2043
Frame Ground
Screw (FG)
Data Cables
115VAC ±  10VAC (50/60 Hz)
(11.5 Amp max) Insulated
Ground
Wire “B”
Earth Ground:Cold Water Pipe
Or Ground RodAWG #6 Wire
Maximum
Length: 60 Feet
Per General Rules of Article 250 Of 
The National Electric Code, 
NFPA70 ONEAC 6-AP
or 6-DP
Solid State 
Secondary
Protectors
Third Wire
AC Ground
Building Main Power
Panel Electrical Ground“A”
115VAC ±10VAC (50/60 Hz)
Dedicated 15 Amp
Branch Circuit
Third Wire Ground
to AC Power AC Cable
Intercabinet Power
Supply Ground Wire
Figure 5-21 AC Power Distribution for Six Cabinets
Important!Remove MBJU only when RCTUE/F is installed. 
						

							DK424 Installation
Reserve Power Installation
Strata DK I&M 5/995-37
DK424 Installation
CAB 1
CAB 2
CAB 3
CAB 4
CAB 5
CAB 6
CAB 7
RPSB1A RPSB1A RPSB2A
RPSU280A
RPSU280A
AC IN AC IN
RPSU280A
AC IN
RPSU280A
AC IN
RPSU280A
AC IN
RPSU280A MBJU
(see Note below)
Jumper Unit
AC IN
RPSU280A
AC IN
FG FG FG FG FG FG
FG
2044
AC Cable
Intercabinet Power
Supply Ground Wire
Frame Ground
Screw (FG)
Data Cables
115VAC ±  10VAC 
(50/60 Hz)
(7.5 Amp max)Insulated
Ground
Wire “B”
Earth Ground: Cold Water Pipe
or Ground RodAWG #6 Wire
Maximum
Length: 60 Feet
Per General Rules 
of Article 250 of 
the National 
Electric Code, 
NFPA70 ONEAC 6-AP
or 6-DP
Solid State 
Secondary
Protectors
Third Wire
AC Ground
Building Main Power
Panel Electrical Ground“A”
115VAC ± 10VAC (50/60 Hz)
Dedicated 20 Amp
Branch Circuit
115VAC ± 10VAC
(50/60 Hz)
(10 amp max) Seventh cabinet data cable
(order part # RC7C1A-1.7m)
Third Wire Ground
to AC Power
Figure 5-22 AC Power Distribution for Seven Cabinets
Important!Remove MBJU only when RCTUE/F is installed. 
						

							DK424 Installation
Reserve Power Installation
5-38Strata DK I&M    5/99
RBDB1A
or
RBDB2AF1 (250V, 12 amps each)F6 F7
F5
F4
F3
F2
RBDB1 (6 cabinets)
or RBDB2 (7 cabinets)
(Shown with cover off)
BATT
PSU RBDB1
or RBDB2
(shown with
cover on)
Top 
Mounting Hole
Top Mounting Hole
Bottom Mounting
Hole Right Side View Remove
three side
screws to 
remove cover RBDB1
or RBDB2
(shown with
cover on)
Bottom
Cabinet
(wall mount
installation)
Second
Cabinet Up
(floor mount
installation)
Remove
three side
screws to 
loosen cover
Bottom Mounting Screw
PSU
+– +–
1475
BATT
(RBDB2 only)
Figure 5-23 Battery Distribution Box (RBDB) Installation
Wall/Floor Mount, Three or More Cabinets with Reserve Battery Back Up 
						

							DK424 Installation
Reserve Power Installation
Strata DK I&M 5/995-39
DK424 Installation
+ – + –
BATT
PSU
+
+ –
– 12 Volt 12 Volt
Right Side View
Battery 
Cabinet or Rack
RBTC1A-1.5M cables from RBDB/PSU connectors to 
individual power supply RBSU280 “BATT” connectors 
Battery Distribution
Box RBDB1A 
(Three or more cabinets,
up to six. RBDB2A is
required for seven cabinets)
White Wires
16 AWG WireTwo “C”
cables to
connect
batteries
in series
Black Wires
12 Amp Fuse RBTCIA-2M cables to connect
batteries to RBDB distribution box
(6.5 ft cables)RBDB To “BATT” 
Connector
RPSU 280
Bottom Cabinet To “BATT” 
Connector
RPSU 280
Cabinet 5 To “BATT” 
Connector
RPSU 280
Cabinet 4 To “BATT” 
Connector
RPSU 280
Cabinet 3 To “BATT” 
Connector
RPSU 280
Cabinet 2 To “BATT” 
Connector
RPSU 280
Top Cabinet
1
2
3-24VPOWER
+5V
-5V
AC INFGDC OUT
+-
ON
OFF
BATTRBTC1A-1.5M
Cable
AC
Power
Cord
RPSU280 Power Supply
Front View
DKSUB Ü
DKSUE Ü
1476
Figure 5-24 Six Cabinet Reserve Power, Three to Six (Wall Mounted Cabinets)
Notes
lSix RBTC1A-1.5M cables are supplied with each RBDB1A
lOne “C” cable is supplied with each RBTCIA-2M
NoteSee Battery Requirements in Figure 5-25 on 
Page 5-41. 
						

							DK424 Installation
Reserve Power Installation
5-40Strata DK I&M    5/99
+ – + –
BATT
PSU
+
+ –
– 12 Volt 12 Volt
Right Side View
Battery 
Cabinet or Rack
RBTC1A-1.5M cables from RBDB2/PSU connectors to 
individual power supply RBSU280 “BATT” connectors
(supplied with RDBD2). 
White Wires
16 AWG WireThree “C”
cables to
connect
batteries
in series
Black Wires
12 AMP Fuse RBTCIA-2M cables to connect
batteries to RBDB2 distribution box
(6.5 ft cables)RBDB2 To “BATT” 
Connector
RPSU 280
Bottom Cabinet To “BATT” 
Connector
RPSU 280
Cabinet 6 To “BATT” 
Connector
RPSU 280
Cabinet 5 To “BATT” 
Connector
RPSU 280
Cabinet 4 To “BATT” 
Connector
RPSU 280
Cabinet 3 To “BATT” 
Connector
RPSU 280
Cabinet 2
To “BATT” 
Connector
RPSU 280
Top Cabinet
Cable supplied with RC7C1A-1.7M cable kit.
1
2
3-24VPOWER
+5V
-5V
AC INFGDC OUT
+-ON
OFF
BATTRBTC1A-1.5M
Cable
AC
Power
Cord
RPSU280 Power Supply
Front View
DKSUB Ü
DKSUE Ü
2071
NoteSee Battery Requirements in 
Figure 5-25 on Page 5-41.
Figure 5-25 Seven Cabinet Reserve Power (Wall Mounted Cabinets)