Symmetra PX 10-80 kW 208 V Installation Sheet
Wye utility power source with a grounded neutral.
Ensure clockwise voltage phase rotation (L
1
,L
2
,L
3
).
Recommended input protection (dual mains configuration)
Mains input: 350 Amp 3-Pole AC circuit breaker with 30 kAIC.
Bypass input: 300 Amp 3-pole AC circuit breaker with 30 kAIC.
Note: If your installation does not include an Isolation Transformer
(optional equipment), use a 300 Amp Class “J” current limiting fuse
on each input phase.
Recommended input protection (single mains configuration)
Mains input: 350 Amp 3-Pole AC circuit breaker with 30 kAIC.
Note: If your installation does not include an Isolation Transformer
(optional equipment), use a 350 Amp Class “J” current limiting fuse
on each input phase.
Recommended output (single and dual mains)
Output: 300 Amp 3-pole AC circuit breaker with 30 kAIC.
Recommended wiring for a 86
o
F/30
o
C temperature environment
Mains input wires: 2×4/0 AWG 167
o
F/75
o
C rated copper wire (for
single and dual mains installation).
Bypass input wires: 2×3/0 AWG 167
o
F/75
o
C rated copper wire (for
dual mains installation).
Output wires: 2×3/0 AWG 167
o
F/75
o
C rated copper wire.
Refer to NEC Articles 310-15, 310-16 and 315 for further
information.
Neutral output wires: rate for 173% of output phase current if feeding
all Switch Mode Power Supply loads without power factor correction.
Ground wires: sized in accordance with NEC Article 250-122 and
Table 250-122.
Use Molex lug type (see table) or equivalent and crimp to
manufacturer’s specifications.
Full load heat loss at nominal mains
Full load heat loss at nominal mains: 23,743 BTU/hr (6,957 Watts).
The installation must comply with local and national
codes.
Cable Size
(AWG)
Terminal
Bolt
Diameter
Cable Lug
Type
Crimping
Tool
Die
1/0 M10 LCA1/0-38-X CT-2001 CD-2001-1/0
2/0 M10 LCA2/0-38-X CT-2001 CD-2001-2/0
3/0 M10 LCA3/0-38-X CT-2001 CD-2001-3/0
4/0 M10 LCA4/0-38-X CT-2001 CD-2001-4/0
7
Checklist
Ensure all power wiring is torqued to a minimum of 18.4 lb-in (25
Nm).
Ensure that both System Enable Switch and DC Breaker in the Battery
Enclosure are in the OFF or STAND-BY position.
Apply upstream utility power to the system input and measure the
voltage at the input terminal block. Record voltages between:
Mains input
L1 and N:______________ L2 and N:_____________
L3 and N:_______________
Bypass input
L1 and N:______________ L2 and N:_____________
L3 and N:_______________
Measured voltage must be between 96 and 130. If not, STOP!
Verify correct wiring (correct location of N) from the power
source to the input wiring connections. Repeat Step 3.
Verify A, B, C or RST clockwise phase rotation using a phase rotation
meter.
Turn on System Enable Switch. Wait 1 minute for system to self test.
Ignore display warning (fault light will be on).
Test the EPO switch. The System Enable Switch should trip to the
STAND-BY position, and the system should shut down completely. If
not, check the connections and the EPO switch to ensure that they are
installed and functioning correctly.
Successful completion of steps 1 through 6 indicates that the UPS
wiring is properly installed and functioning correctly. Turn off
breakers and switches and shut down utility power to the system input.
See Total Power Off procedure in Safety Sheet.
Reinstall all wiring access panels on the UPS.
8
Contact Information
For local, country-specific centers: go to www.apc.com/support/contact
or see the rear cover of the Operation Manual for phone numbers.
Do not install power or battery modules.
Symmetra PX 10-80 kW 208 V Installation Sheet
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