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WARNING: Failing to terminate the communication bus properly will lead to equipment
malfunction and equipment damage.
8.4
Step 3: Voltage rating check/adaptation and phase rotation
check
-
The inverter nominal voltage setting must be adapted to the actual network
voltage by adjusting the tab of the auxiliary transformer. Ensure that the inverter
panel is isolated upstream before changing the tab of the aux. transformer.
WARNING: The tap setting of the auxiliary transformer's primary must be
adapted according to the network voltage to avoid a too high or too low
auxiliary voltage. If the tap setting for your network voltage is not available,
then choose a tap just above the network voltage present (e.g. for 390V
network choose 400V tap setting). Excessive (auxiliary) voltage levels will lead
to inverter damage.
Note that in addition to configuring the unit hardware for a certain voltage range,
the network voltage also has to be set up in the inverter controller software
(commissioning window).
WARNING: The ESI-S is able to operate on networks where the supply voltage is
up to 10% higher (inclusive of harmonics but not transients) or lower than the
voltage range it is set up for. Since operation at the upper limits of voltage and
temperature may reduce its life expectancy, the ESI-S should not be connected
to systems for which it is known that the overvoltage will be sustained
indefinitely.
-
The voltage phase rotation at the inverter incoming power supply terminals must
be clockwise (L1 (R,U) -> L2 (Y,V) -> L3 (B,W) -> L1 (R,U)).
WARNING: Applying voltage to the inverter to check the phase rotation may only
be done after ensuring that the network voltage level is acceptable for the
inverter operation and after it has been found that the inverter is not
mechanically nor electrically damaged.
When power is supplied to the inverter terminals, the unit will automatically do a
phase rotation check in the master unit. If the phase rotation is wrong the inverter
will show the message 'ACK. FAULT' on the ESI-Manager 'Welcome' screen. The
unit will refuse to start and a message indicating wrong phase rotation will be
stored in the inverter event log (Cf.
WARNING: For safety reasons, when using a phase rotation meter, the phase
rotation must be measured at the upstream protection level and not in the
inverter panel itself.
Section
7.10.3)
Manual Energy Storage Inverter ESI-S ç Commissioning instructions 157
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