TOSHIBA
L2
L1
4.0
Power Connections
4.1
Power Connections
The following illustration details the wiring connections from the power distribution panel
(not part of the UPS) to the UPS unit and the Battery unit. This connection diagram is to
be used with the following Battery units: UC3-BC-0230, 0260, 0330, 0360, 0630, 0660,
and 0830.
4 - 1
Terminal blocks 1 and 2 are used for wiring the EPO of the Battery System
Terminal block 3 is used to connect the battery cabinet to UPS ground.
Terminal block 4 is used to supply power to the internal battery charger circuit of the battery
cabinet. The entire terminal block accepts #6 to #16 Awg. (Tightening torque is 13 inch-pounds
minimum). Use copper 90
°
C wire only.
4.3
Wire Size and Tightening Torques
Main UPS Unit
Source Power
Distribution
Panel
Battery Unit
12
13
MCCB
H2
H1
1
3
2
G
MCCB-B
+BUS
P
N
P
N
16
4
NOTE:
The following model numbers do not require the +Bus connection:
(UC3-BC-0230, UC3-BC-0330, and UC3-BC-0630)
1
2
4
EPO
EPO
G
+BUS
Battery Charger
3
BATTERY BREAKER SIZING
MODEL
BREAKER
UC3-BC-0230
UC3-BC-0260
32A 250VDC
UC3-BC-0330
UC3-BC-0360
32A 250VDC
UC3-BC-0630
UC3-BC-0660
32A 250VDC
UC3-BC-0830
32A 500VDC
8
3
Recommended Wire Size
Battery Cabinet
EPO (Terminal
Blocks 1 & 2)
Gnd. (Terminal
Block 3)
+Bus (Terminal
Block 4)
2.4KVA
18 AWG
14 AWG
14 AWG
3.6KVA
18 AWG
14 AWG
14 AWG
6.0KVA
18 AWG
14 AWG
14 AWG
8.0KVA
18 AWG
14 AWG
14 AWG
MCCB-C
Breaker
208VAC
240VAC
11
MCCB-C
4.2
Terminal Block details
The following illustration is a detail of the Battery Cabinets terminal block (see sections
5 & 6 for terminal block location).
Charger
N
L
Customer Supplied
120VAC
