Installation Planning; Ac Overcurrent Protection; Choice Of Grid Output Connection Type (Ac Side) - ABB UNO-DM-TL-PLUS-US Product Manual

I
nstallation planning
Observe the following considerations in design:
To reduce the risk of fire, connect only to a circuit provided with a branch circuit overcurrent
protection in accordance with NEC (ANSI/NFPA 70). See Maximum AC OCPD requirement
in following paragraph.
This UNO inverter is designed without an isolation transformer and is intended to be installed
per NFPA 70, 690.35 with an ungrounded PV array.
An automatic overcurrent device (e.g. circuit breaker) must be installed between the UNO
inverter and the AC utility grid. It is the responsibility of the end user to provide protection for
the AC output circuit.
A
C overcurrent protection
Maximum Current/Voltage
C
hoice of grid output connection type (AC side)
Caution! Connect the ground before the grid connections.
Always respect the nominal ratings of voltage, current, and power defi-
ned in the technical data table, when designing your system.
AC output overcurrent protection is not provided in the inverter; it is the re-
sponsibility of the end user to provide overcurrent protection for the AC output
circuit. To reduce the risk of fire, connect only to a dedicated circuit provided
with overcurrent protection in accordance with the NEC (ANSI/NFPA 70):
UNO-DM-3.3/3.8/4.6/5.0-TL-PLUS-US
Type Typical installations use a 2-pole/600V rated,
This is a single phase inverter. Use the wiring schemes shown on the
bi-directional thermal-magnetic circuit breaker, UL489 or equivalent.
table below when a different grid standard is used. Refer to the
UNO-DM-3.3-TLPLUS → 20A/600V for 208V and 240V grid
instruction manual to properly set the inverter grid standard from the
front panel display. Use 90°C copper wire only. Refer to the instruction
UNO-DM-3.8-TLPLUS → 20A/600V for 208V and 240V grid
manual for wiring instructions.
UNO-DM-4.6-TLPLUS → 25A/600V for 208V and 240V grid
UNO-DM-5.0-TLPLUS → 30A/600V for 208V and 240V grid
Ceci est un onduleur monophasé. Utilisez les schémas de raccordement
ci-dessus si le réseau est spécifique. Réferez-vous au manuel
Determine which AC output is applicable for the inverter model being in-
d'installation pour sélectionner via l'afficheur frontal le code pays
adéquat. Utilisez seulement câbles en cuivre 90 °C.
stalled. The AC wiring connections based on the AC grid type are shown
Consulter le manual d'installation pour les instructions de câblage.
in the table below.
TERMINAL
1
BORNE
WIRE
L1
CÂBLE
- 52 -
CAUTION
ATTENTION
L1
L3 L2
208V~
3PH - D
2 3
L2 -
AWG# 4 - 8
5 - Installation
L1
N
L2
240V~
SPLIT-PHASE
1 2 3
L1 L2 N