Step 4, Recording Installation Information - SolarEdge SE3000 Installation Manual

CAUTION:
If the measured voltage is too high, the installation may not have a safe low
voltage. PROCEED WITH CARE!!
Please note that a deviation of up to 2V for a full string is considered
normal.
A voltage that is higher than the quantity of power optimizers may be
caused by one of the following reasons:

An extra power optimizer is connected in the string.

The output of a PV module may be connected in the string instead of the
output of a power optimizer.

A malfunction of one of the power optimizers.
Perform the following if the total string voltage is too high:

Verify that only power optimizers are connected in the string and that no
PV module outputs are connected without a power optimizer.

Disconnect the wires that connect the power optimizers in the string.

Measure that there is 1V safety voltage for each individual power
optimizer in order to locate the power optimizer that does not output the
proper voltage.

If a malfunctioning power optimizer is located, check its connections,
polarity, module and voltage.

If a malfunction cannot be bypassed or resolved, skip the malfunctioning
power optimizer, thus connecting a shorter string.

Do not continue before finding the problem and removing the
malfunctioning power optimizer.
IMPORTANT SAFETY FEATURE:
After a PV module is connected to the power optimizer, the power optimizer
outputs a safe voltage of 1 V. We suggest verifying this output for the first
few power optimizers that you connect in order to verify their proper
connection. Take note that if you use a tracker, the power optimizer will turn
ON only if the tracker is tracking the sun and at least 2 W of power are
provided by the PV module.
Step 4, Recording Installation
Information
Be sure to record power optimizer serial numbers during their installation, as this
information may be required later for troubleshooting, and is necessary for proper
physical layout on the monitoring website.
The serial number(s) of the inverter(s) must be specified in order to open a new
site.
For more information about recording and monitoring installation data, see
page 38.
SolarEdge Installation Guide – MAN-01-00057-2.0
Installing the Power Optimizers
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