PRO208V-5k75 Installation and Safety Manual
900-0203-01-00 Rev B
6
2.2.
General Safety Provisions, Warnings, and Precautions
Connection of the system must be to a 3-phase AC source which is 208 Vac nominal only.
The ProHarvest 208V inverter is provided with DC circuit protection in accordance with the
requirements for ungrounded systems as outlined in NEC 690.35(C).
These systems meet the requirements of NEC 690.11 for DC arc-fault protection.
All electrical installations must be performed in accordance with all applicable local, state and national
requirements, including ANSI/NFPA 70.
Inverters must be provided with an equipment ground according to NEC 690.43.
All 5 circuits (L1, L2, L3, neutral, ground) must be connected and neutral must be bonded to earth
ground. Failure to do so can damage the unit and void the warranty.
The inverter components contain no user-serviceable parts. For all repair and maintenance always
contact an authorized dealer or installation partner.
The ProHarvest 208V inverter has inputs for two separate DC strings.
Reversal of polarity of one or both string inputs will irreparably damage the unit.
Before disconnecting DC cables, use a current clamp meter to measure the presence of current.
If current is present, cover the portion of the array affected (following NEC 690.18).
The inverter system is a utility-interactive system. Before connecting any solar power system to the
grid, contact the local utility company. This connection should only be made by qualified personnel.
PV arrays produce voltages that can present an electrical shock hazard. Wiring of PV arrays should be
performed by qualified personnel following all manufacturer's guidelines.
Be aware that the body of the inverter acts as a heat sink. Under normal operating conditions, the
temperature of the exterior of the enclosure can reach more than 15°C above ambient. Under
extreme conditions the exterior of the enclosures can reach a temperature of 80°C. To reduce risk of
burns, use caution when working with the inverter system.
Communications Gateway AC Connection Procedures
o
To connect: Plug the AC cable into the Gateway FIRST, then plug the other end into the wall outlet.
o
To disconnect
:
Unplug the cable from the AC wall outlet FIRST, then proceed to disconnect the
cable from the Gateway device.
In order to maintain the integrity of the watertight enclosures, all connectors must be properly and
fully engaged.
The utility connection can suffer from repeated disturbances depending on, atmospheric effects,
utility abnormalities, local loads, and the physical location. These disturbances can damage
equipment. It is recommended that an appropriate surge suppressor be installed near the point of
common connection with the utility.
Before installation, carefully read all instructions, cautions, and warnings in this manual.
