FLEXpower TWO Quick Start Guide

Energize/Startup
Procedures
Pre-startup Procedures
After opening the AC and DC enclosures:
1. Double-check all wiring connections.
2. Inspect the enclosure to en
sure no
tools
or debris has been left inside.
3. Disconnect AC loads at the load panel.
4. Disconnect AC inputs at the source.
5. Place the mechanical interlock in the
normal (non-bypass) position.
Functional Test
Points
Battery Voltage Test Points
De-energize/Shutdown
Procedures
WARNING: Lethal Voltage
Review the system configuration to identify
all possible sources of energy. Ensure
ALL sources of power are disconnected
before performing any installation or
maintenance on this equipment. Confirm
that the terminals are de-energized using
a validated voltmeter (rated for a minimum
1000 Vac and 1000 Vdc) to verify the
de-energized condition.
WARNING: Lethal Voltage
The numbered steps will remove power
from the inverter and charge controllers.
However, sources of energy may still be
present in the AC and DC wiring boxes.
To ensure absolute safety, disconnect ALL
power connections at the source.
WARNING: Burn Hazard
Internal parts can become hot during
operation. Do not remove the cover
during operation or touch any internal
parts. Be sure to allow the parts sufficient
time to cool down before attempting to
perform any maintenance.
To de-energize or shut down the OutBack devices:
1. Turn off (open) the AC circuit breakers.
2. Turn off (open) the DC circuit breakers for the battery.
Wait 5 minutes for the devices to internally discharge themselves.
3. Turn off (open) the PV circuit breakers. Turn off the GFDI if present.
NOTE: To completely de-energize the product for safety, disconnect al
l
incoming
PV circuits and AC sources outside the FLEXpower TW
O.
4.
Verify 0 Vdc on the DC input terminal of the L1 inverter by placing
the
voltmete
r leads on and .
5. Verify 0 Vdc on the DC input terminal of the L2 inverter by placing the
voltmete
r leads on and .
6. Verify 0 Vdc on the PV terminals of one charge controller by placing
the
voltmete
r leads on and . NOTE: is not wired from the factory,
but is still electrically common with other negative (–) terminals.
7. Verify 0 Vdc on the PV terminals of the other charge controller (if presen
t)
by placing th
e voltmeter leads on and .
8. Verify 0 Vac on the AC output circuit breakers by
placing the voltmeter
leads on
and . Repeat this step for and .
900-0152-01-02 REV A
©2018 OutBack Power Technologies. All Rights Reserved.
1
2
3
PV Voltage Test Points
To energize or start up the OutBack devices:
1. Using a digital voltmeter (DVM), verify 12, 24, or 48 Vdc on the DC input terminals by placing
the DV
M leads on and . Confirm that the voltage is correct for the inverter and charge
controller models. Confirm the polarity.
2. Verify that the PV output for each charge controller is in the correct range of ope
n-circuit
voltage and con
firm the polarity by
:
a
) placing the DVM leads on and , and
b) placing the DVM leads on and (if a second charge controller is present).
3. Verify 120/240 Vac on the terminals of the AC source and connect the sour
ce.
4
. Verify 120 Vac on the AC I
NPUT L1 TBB by placing the DVM leads on and .
5. Verify 120 Vac on the AC INPUT L2 TBB and .
6. Verify 240 Vac between the AC INPUT TBBs by placing the DVM leads on and .
7. Turn on the GFDI circuit breaker if present. Turn on (close) the PV input circuit breakers.
8. Turn on (close) the DC circuit breakers from the battery bank to the inverter.
NOTE: The factory labeling on these circuit breakers may not be correc
t.
9
. Check the system display or LED indicators. Ensure the inverter is in the ON
state.
Th
e factory default state for FXR inverters is OFF
.
10
. Turn on (close) the FN-DC circuit breaker.
11. Turn on (close) the AC output circuit break
ers.
12
. Verify 120 Vac on the AC O
UTPUT L1 TBB by placing the DVM leads on and .
13. Verify 120 Vac on the AC OUTPUT L2 TBB and .
14. Verify 240 Vac between the AC O
UTPUT TBBs by placing the DVM leads on and .
NOTE: Assumes correct stacking programming (see inverter literature).
15. Replace the covers on the AC and DC enclosures.
16. Turn on (close) the AC input circuit breakers.
17. Turn on the AC disconnects at the load panel and test the loads.
3
1b1a
2
1
4
3a
3c
4a
3
3b
4b
4
1 1
1d
1c
2b
2a
2c 2d
2f2e
Charge controller disconnect
(and second charge controller
if present)
PV + and – (charge controller)
PV + and – (second
charge controller if present)
1b1a 1c 1d
AC IN Voltage Test Points
(Terminal bus bar = TBB)
AC OUT Voltage Test Points
(Terminal bus bar = TBB)
3a 3b
4b4a 3c
3c
2a 1b
2b 1b
4a 3c
4b 3c
4a 4b
3a 3c
3b 3c
3a 3b
1b 1c
1b 1d
2c 2d 2d
2e 2f
3a 3c 3b 3c
2e2c 2f2d
1b
1a
2
1
2
3 2
2a 2b
Test points 2a
and 2c refer to
the top terminal
of the circuit
breakers.
CAUTION: Equipment Damage
Incorrect battery polarity will damage the equipment.
!