7.4
From Manual Bypass to Inverter Procedure
After the maintenance procedures and testing are complete you will need to
restore the ELI back to its normal mode of operation without interrupting the
power to the loads. The following procedures need to be followed.
a.
Close all fuse holders
– ensure all fuse holders behind the control module
are closed. Fans will start spinning.
b.
Close the reserve breaker
– Wait 15 seconds for the reserve and output
LED on the status panel to light up, indicating the reserve static switch loop
is energized and there is power on the output terminals. The power
supplies within the ELI will also energized and the internal fans will rotate.
c.
Open the bypass breaker
– The inverter cannot be switched on when the
maintenance bypass breaker is closed (because the CPU will sense the
breaker and prevent the inverter from connecting directly to the AC source).
The reserve breaker is already closed so power goes through the reserve
loop if the bypass breaker is open. AC power at the output will not be
interrupted.
d.
Close the rectifier breaker
- The rectifier initiates automatically if the AC
utility power connected is with in operating parameters. The DC voltage will
slowly rise (15 – 30 sec.) until the designated voltage is reached. The DC
voltage is now ready for the inverter and battery cabinets.
g.
Close the battery breaker
- A fuse holder is employed from the battery to
the DC bus for safety purposes. The batteries will start charging once the
breaker is closed. The breaker can be located within the battery cabinets.
h.
Push inverter on switch
– To turn on the inverter simultaneously press the
inverter on switch (
׀
) and the control switch (
◄►). The inverter will start
working and the inverter output will be established in 4 sec. The load will
automatically transfer to the inverter 3 sec. later. The ELI is now operating
in normal mode.
e.
Check the status panel is correct, as shown in the diagram on the previous
page. All warning LED’s on the right hand side are off, two LED’s:
‘INVERTER ON’ and ‘INVERTER STATIC SWITCH’ on the left hand side
should be lit, and the LED’s circle should also be lit. If the load is over 70%,
the ‘70% LOAD’ LED will also be lit.
7.5
Manual Battery Test
To initiate a manual battery test turn off the input breaker to disconnect all
ungrounded conductors. This process will simulate a failure of utility supply.
7.6
Battery Condition Test
To be performed by service personnel. Consult service manual for more
information.
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M4102 Ty-Borealis 8-48KW Operators Manual v1.0 2013-08-14
