AUO AC UNISON, Installation Manual

Page: 26 / 44

AUO AC Unison
[AUO AC Unison Installation Guide] [Page 25 of 44] [February 2012 Rev. 1.0]
This section contains important information and instructions to safely install an array of alternating current photovoltaic solar
modules (AC Unison module) and the Data Logger. Failure to follow these instructions can result in equipment damage or
failure, or personal injury, and may void the system warranty, and/or property damage.
Important safety instructions for AC Unison modules
The nationally recognized testing lab (NRTL) performing the listing or certification on an AC Unison module assembly that
includes this micro-inverter might require the following statements to be included in the AC Unison module installation
instructions. There shall be no substitute for the words "CAUTION", "WARNING", or "DANGER" in the text of the following
instructions. Exception: The words "WARNING" or "DANGER" may be used in lieu of "CAUTION". When used, these words
shall be in upper case. Installation and field service is to be performed only by qualified, trained personnel with the necessary
skills and knowledge to work on this type of electrical equipment.
- Perform all electrical installations in accordance with any local codes, the National Electrical Code (NEC) ANSI/NFPA 70
for US installations, or the Canadian Electrical Code Part I, CSA C22.1 for Canada.
- This unit or system is provided with fixed trip limits and shall not be aggregated above 30 kW on a single Point of Common
Connection.
Voltage and frequency limits for utility interaction
C
Simulated utility source
Condition
Voltage (V) Frequency (Hz)
Maximum time (sec) (cycles) at 60 Hz
a
before
cessation of current to the simulated utility
A < 0.50V
nor
b
Rated 0.16
B 0.50V
nor
b
<V<0.88V
nor
Rated
2
C 1.10V
nor
b
<V<1.20V
nor
Rated
1
D
1.20V
nor
≦
V
Rated
0.16
E Rated f> Rated+0.5 0.16
F Rated F< Rated-0.7 0.16
a – Non-adjustable maximum clearing times
b – Nominal voltage equals 120V phase to neutral
c – Trip limit accuracy: Voltage-±2.5% based on 120V nominal, frequency-±2.5 Hz
- This AC Unison module is intended for operation in an environment having a maximum ambient temperature of 45°C.
- Work with the local electric company and authorities having jurisdiction (AHJ) before, during, and after the installation of
the solar electric system. The following are examples of possible requirements the electric company might have regarding
the installation:
An upgrade of the existing meter
A readily accessible AC disconnect and a diagram showing its placement
An inspection or approval before connecting the system to the utility grid
Qualified personnel or electric company employee to connect the system to the utility grid
5.0 Notice and Safety Instructions