enphase IQ System Controller 1 Technical Brief page 4

Required Equipment
Secure the following equipment before visiting the site.
Portable generator
A 120/240 VAC portable inverter generator is required from the following list.
WARNING
following table. Using other generators for this recovery procedure may fail to charge the
batteries and could damage the generator or Enphase equipment.
Table 2. List of supported portable generators to perform state of charge recovery
Make Model
8750 (SKU:
Predator
57480)
6250 (SKU:
Champion
100519)
4500i (SKU:
Powerhorse
83171)
SUA8000iE -
iPower
8000 Watt
An inverter generator that produces a clean sine wave is essential to ensure that the power quality of
the generator supply is within the voltage and frequency limits supported by the IQ System Controller
and IQ Batteries. Enphase has tested the above generators and has ensured that these comply with
the requirements of the Enphase Energy System.
NOTE: The following are the acceptable voltage and frequency variations and total harmonic
distortion:
•
240 V L-L, split-phase
•
Voltage regulation: Within -12% to 10%, that is, 211.2 V (full load) to 264 V (no load)
•
Frequency regulation less than ±3%, that is, 58.15 Hz (full load) to 61.85 Hz (no load)
•
Total harmonic distortion (THD) <25%
Enphase does not support three-phase generators or 120 V single-phase generators. Only 240 V
1
split-phase generators with a 4-wire connection, that is, L1, L2, neutral, and ground, are supported.
Multimeter
Use a multimeter with a clamp to measure the current or voltage wherever required.
2-Pole breaker
A 2-pole breaker is needed to perform the system recovery and is used either on the generator slot or
the PV slot inside the IQ System Controller. Select a proper breaker and wire size based on the
generator's 240 V breaker size (protecting the receptacle used). Note that the wire and breaker size
can be reduced to no less than a wire size of 12 AWG and a 20 A 2-pole breaker, respectively, as the
system will regulate the drawn current from the generator to 20 A. An example of a suitable 2-pole
20 A breaker is the Eaton BR 20 Amp 120/240 Volts 2-Pole Circuit Breaker.
Generator extension cord stripped to work with the IQ System Controller
Select a proper generator extension cord based on the generator's current rating or receptacle on the
generator. These cables have a male plug on one end to be used with the receptacle on the generator.
The cable has a female plug on the opposite end. Cut off the female plug and strip the outer jacket for
use with the IQ System Controller. Strip the extension cords L1, L2, ground, and neutral wires with an
appropriate wire stripping tool for use with the IQ System Controller. The
4
: The Enphase Energy System supports only the portable generators listed in the
Nameplate
Starting wattage: 8,750 W
Running wattage: 7,000 W
Starting wattage: 6,250 W
Running wattage: 5,000 W
Starting wattage: 4,500 W
Running wattage: 3,700 W
Starting wattage: 8,000 W
Running wattage: 7,000 W
1 with neutral, 60 Hz
© 2024 Enphase Energy Inc. All rights reserved.
State of charge recovery for an Enphase Energy System
Outlet to be used
120/240 VAC 30 A (L14-30R)
receptacle
120/240 VAC 30 A (L14-30R)
receptacle
120/240 VAC 30 A (L14-30R)
receptacle
120/240 VAC 30 A (L14-30R)
receptacle
champion generator extension
TEB-00084-2.0
June 2024