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1. Labels and Symbols
The labels on the TRIO inverter carry the markings, main technical data and identification of the equipment and manufacturer. The technical data shown
in this quick installation guide does not replace that shown on the labels attached to the equipment.
• PV source conductors must be Listed PV wire rated 1000V minimum per NEC 690.35.
• PV output conductors shall consist of sheathed (jacketed) multi-conductor cables or be installed in an approved raceway and must be isolated from
enclosure and system grounding, as required by NEC 690.35 and is responsibility of the installer.
• The TRIO is designed without an isolation transformer and intended to be installed per NFPA 70, 690.35 with an ungrounded PV array and can be used
only with PV modules that do not require one of the terminals to be grounded.
• All PV source and output circuit conductors must have disconnects complying with NEC, Section 690, Part III.
• To reduce risk of fire, connect only to circuit provided with 40A for 20kW and 50A for 27.6kW maximum branch circuit overcurrent protection in
accordance with NEC (ANSI/NFPA 70). See Maximum AC OCPD requirement in Technical Data table, Section 17.
• For models that do not include AC output overcurrent protection, the end user is responsible for providing protection for AC output circuit.
• Output circuits must be isolated from enclosure and system grounding, required by Articles 690.40 and 690.42 of NEC, ANSI/NFPA 70, and are the
responsibility of the installer.
In the manual and/or in some cases on the equipment, the danger or hazard zones are indicated with signs, labels, symbols or icons.
UL 1741; CSA-C22.2 No. 107.1-01
Grounding (earth)
General warning - Important safety information
System earth conductor
(main grounding protective earth, PE)
Hazardous voltage
ø
Phase
Hot surfaces
Direct and alternating currents, respectively
2. Frequency disconnect
This inverter has been factory programmed to automatically disconnect from the utility distribution system in compliance with UL 1741 and IEEE 1547
specifications. Default voltage and frequency trip limit and trip time settings to comply with these standards are shown in table below. The Service menu
can be used to adjust Voltage and Frequency Trip Limit and Trip Time Parameters according to Grid requirements of installation locale. Refer to technical
manual for instructions to use the Service menu.
Cond.
Simulated Utility Source
Max.time (sec) @60Hz before
cessation of current to simulated
utility
Voltage (V)
Frequency (Hz)
A
< 0.50 Vnom (Fixed)
Rated (60 Hz)
0.16 (Fixed)
B
0.50 Vnom ≤ V < 0.88 Vnom (Adj. Set Points 55% to 88%)
Rated (60 Hz)
2 (Default)(Adj. Set Points 0.16 to 5 sec)
C
1.10 Vnom < V < 1.20 Vnom(*) (Adj. Set Points 110% to 115%)
Rated (60 Hz)
1 (Default)(Adj. Set Points 0.16 to 5 sec)
D
(*)1.20 Vnom ≤ V(Fixed)
Rated (60 Hz)
0.16 (Fixed)
E
Rated
f>60.5Hz (Default)(Adj. 60.2 to 63.0 Hz) 0.16 (Default) (Adj. 0.16 to 300 sec)
F
Rated
f<59.3 Hz (Default)(Adj. 59.8 to 57.0 Hz)
0.16 (Default) (Adj. 0.16 to 300 sec)
G
Rated
f < 57.0 Hz
0.16 (Fixed)
H
Rated
f > 63.0 Hz
0.16 (Fixed)
3. List of components
Components available for all models
Quantity
3 pin connector for
configurable relay
2
9 pin connector for
communication and control
signals
4
L-key, TORX TX20
1
Jumpers for parallel input
mode
2
Components available for all models
Quantity
Jumper cables for parallel
input, (-S1, -S1A, -S1B models)1+1
Bracket for wall mounting
1
4. Select installation location
Installation position -
• Install on a wall or strong structure capable of bearing weight.
• Install vertically with a maximum incline of +/- 5°.
• Maintain minimum clearance measurements shown.
• Ensure sufficient working area in front of inverter for wiring box access.
• Choose a location that allows unobstructed airflow around inverter.
• Position multiple inverters side-by-side, maintaining minimum clearances. Multiple inverters can also be placed in
staggered arrangement.
• Minimum clearances for staggered arrangements include width of inverter plus additional allowances for inverters
arranged above or below.
