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990-3469-001
10/2008
*990-3469-001*
Installation of Breaker
Adaptors and Circuit
Breakers
Symmetra PX 250/500 kW
IMPORTANT SAFETY INSTRUCTIONS
- SAVE THESE INSTRUCTIONS
Warning: ALL safety instructions in the Safety Sheet
(990-2984) must be read, understood and followed when
installing the UPS system. Failure to do so could result in
equipment damage, serious injury, or death.
Warning: Perform a Total Power Off as desribed in the
Safety Sheet (990-2984) before adding breaker adaptors
and circuit breakers.
Caution: All electrical power and power control wiring
must be installed by a qualified electrician, and must comply
with local and national regulations.
Available Breakers Prepare the Installation
The distribution panel
The distribution panel is located in the Maintenance Bypass with
Distribution (MBwD) of the Symmetra PX 250/500 kW system.
As standard the distribution panel is equipped with three phases (L1-
L3) for 3-pole breakers. An optianal neutral bar can be obtained from
and installed by APC for use with 4-pole breakers.
The distribution panel’s flexibility enables different frame sizes to be
populated in the same panel.
The breaker adaptors
The circuit breakers connect to the panels by means of a breaker
adaptor, and they are available in three frame sizes: T1, T3, and T5.
The breaker adaptors have terminals to attach two circuit breakers, and
contacts in the rear that connect to the output rails.
The 3-pole breaker adaptor terminals are designated L1, L2, L3 from
the top to the bottom.
The 4-pole breaker adaptor terminals are designated L1, L2, L3, N
from the top to the bottom.
Part Number Description
PD3P63AT1B 63 A, three-pole circuit breaker, T1 frame
PD3P70AT1B 70 A, three-pole circuit breaker, T1 frame
PD3P80AT1B 80 A, three-pole circuit breaker, T1 frame
PD3P90AT1B 90 A, three-pole circuit breaker, T1 frame
PD3P100AT1B 100 A, three-pole circuit breaker, T1 frame
PD3P125AT3B 125 A, three-pole circuit breaker, T3 frame
PD3P150AT3B 150 A, three-pole circuit breaker, T3 frame
PD3P175AT3B 175 A, three-pole circuit breaker, T3 frame
PD3P200AT3B 200 A, three-pole circuit breaker, T3 frame
PD3P225AT3B 225 A, three-pole circuit breaker, T3 frame
PD3P300AT5B 300 A, three-pole circuit breaker, T5 frame
PD3P400AT5B 400 A, three-pole circuit breaker, T5 frame
PD1PADAPT1-L1L3 300 A, three-pole circuit breaker, T5 frame
PD1PADAPT1-L2 400 A, three-pole circuit breaker, T5 frame
PD4P63AT1B 63 A, four-pole circuit breaker, T1 frame
PD4P70AT1B 70 A, four-pole circuit breaker, T1 frame
PD4P80AT1B 80 A, four-pole circuit breaker, T1 frame
PD4P90AT1B 90 A, four-pole circuit breaker, T1 frame
PD4P100AT1B 100 A, four-pole circuit breaker, T1 frame
PD4P125AT3B 125 A, four-pole circuit breaker, T3 frame
PD4P150AT3B 150 A, four-pole circuit breaker, T3 frame
PD4P175AT3B 175 A, four-pole circuit breaker, T3 frame
PD4P200AT3B 200 A, four-pole circuit breaker, T3 frame
PD4P225AT3B 225 A, four-pole circuit breaker, T3 frame
PD3PADAPT1 T1 breaker adaptor
PD3PADAPT3 T3 breaker adaptor
PD3PADAPT5 T5 breaker adaptor
PD1PADAPT1-N T1 breaker adaptor, 1 pole, neutral
PD1PADAPT3-N T3 breaker adaptor, 1 pole, neutral
Distribution
panel
Distribution panel with
optional neutral bar
3-pole
distribution
breaker
3-pole
distribution
breaker
L3
L2
L1
4-pole
distribution
breaker
4-pole
distribution
breaker
L3
L2
N
L1
The below table outlines the number of possible breaker adaptors that
can be inserted in the distribution panel:
The circuit breakers
T3 and T5 breakers.
Both the input and output sides of the T3 and T5 breakers require
preparation before they are installed on the panel. Follow the
instructions below for each pole.
1. On the input side, place an M8 square nut into a square nut
retainer, and insert the nut retainer into the pole position. Slide an
M8 washer onto an M8 bolt and insert the bolt into the pole
position by loosely attaching the bolt to the M8 square nut.
2. On the output side, slide a saddle lug into the pole position. You
may need to loosen the bolt in the lug. Insert a saddle lug retainer
into the pole position.
Install Breaker Adaptors and Circuit
Breakers
The below procedure shows the installation of the T1 3-pole breaker
assembly. The steps are identical for the other breaker assemblies.
Note: All parts needed for the installation procedures are
included with the circuit breaker kit.
Note: A breaker schedule should be maintained and kept in
the breaker schedule on the front of the inner door.
1. Perform a Total Power Off as described in the Safety Sheet
(990-2984).
2. Attach the breaker adaptor to the distribution panel, and secure it
by turning the module locks using and allen key.
3. Snap the circuit breakers onto the adapter module’s bus, and lock
in place with an M4 x 70 screw. Use a Phillips screwdriver to
tighten.
4. Attach the breaker brackets to the slots in the distribution panel,
and secure using an M6 x 12 Torx screw. Use a T25 Torx driver
to tighten.
5. Attach the breaker to the breaker bracket using an M4 x 70
screw. Use a Phillips screwdriver to tighten.
6. When the panel is fully configured, cut the plastic rail covers
provided with the distribution panel to appropriate length to
cover the live busbar rails.
7. Install terminal covers (supplied) over the the terminals that are
not used.
Warning: No terminals or live parts must be left
exposed.
Connect Cables
1. Route the output cables through either the top or the bottom to
the circuit breakers. Secure the cables to the brackets in the side
panel.
2. Slide the current transformers over the output cables.
3. Connect the load to the circuit breakers. Torque to the
specification on the label on the circuit breaker.
4. Connect the auxillary switch contact from the circuit breaker to
the 3-pin connector on the monitoring board.
5. Connect the cables from the current transformers to the 15-pin
connector on the monitoring board next to the circuit breakers.
Contact Information
For local, country-specific centers: go to www.apc.com/support/
contact.
Breaker frame
size
Max. number of
3-pole devices
Max. number of
4-pole devices
T1 16 12
T3 12 8
T5 8 -
T3T3
T5
Input
Output
Input
Output
ٛ
ٛ
ٛ
p
g
0
0
6
5
a
ٛ
0
0
6
6
b
ٛ
ٛ
0067 b
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