DOCUMENT: 151811
SECTION 2SAFETY PV-225208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2003, Xantrex Technology Inc.
2-1
SAFETY FEATURES On/Off Switch
The PV-225208 incorporates a maintained position on/off switch located on the front door of the main enclo-
sure. Under normal conditions, the on/off switch is in the on position. Turning the switch to the off position will
initiate a controlled shutdown of the PV-225208 and open the A/C contactor within the unit. The A/C contactor
cannot be closed unless the switch is in the on position. The PV-225208 is prevented from being restarted until
the on/off switch is turned back to the on position. Cycling the on/off switch will reset the PV-225208 and
attempt to clear any system fault.
Main Enclosure Door Interlock Switch
The front door of the PV-225208 main enclosure is equipped with an interlock switch to preclude operation in
the event of the front door being opened. It is required that the PV-225208 main enclosure door handle be
padlocked during normal operation.
Disconnect Switches
Both AC & DC switches are equipped with lockout hasps for personnel safety. The switch enclosure
door will not open while the PV-225208 is running. In addition, the switch handle and shaft provide a door
interlock. The door cannot be opened when the switch is in the “on” position. The PV disconnect switch is
equipped with an auxiliary contact block which enables the switch to be used as a load break PV disconnect.
In the event a disconnect switch is opened while the PV-225208 is processing power from the PV array, the
contact block will signal the PCU to stop processing power before the switch opens.
Fault Reporting
Any fault conditions are reported to the operator interface. The LCD will display a text description of
the fault. Refer to Section 5, Troubleshooting, for detailed descriptions of system fault conditions.
PV Ground Fault Detection
The PV-225208 is equipped with ground fault detection circuitry (see section 3, installation and section 7,
system schematic for further detail). Upon detection of 10 amps of ground fault current, the PV-225208
executes an orderly shutdown, and annunciates a ground fault at the operator interface. The PV-225208 will
remain faulted until the ground fault is remedied and cleared at the operator interface (see section 5, trouble-
shooting).
The PV-225208 enclosure contains exposed high voltage conductors. The enclosure
doors should remain locked, except during maintenance or testing. These servicing
instructions are for use by qualified personnel only. To reduce the risk of electric
shock, do not perform any servicing other than that specified in the operating
instructions unless you are qualified to do so. Do not open the cabinet doors if
extreme moisture is present (rain or heavy dew).
WARNING
The PV-225208 will immediately shutdown if the front door is opened during opera-
tion. It is required that the PV-225208 main enclosure door handle be padlocked
during normal operations. Please make sure the unit is powered down, and isolated
from the utility grid and PV panels, prior to opening the front door. Allow 5 minutes for
any stored potentials to be discharged, prior to opening the unit.
WARNING