EG4 FlexBOSS21 Hybrid Inverter
Product Overview and Technical Specifications
Product Overview
The EG4 FlexBOSS21 is a versatile 48V split-phase, hybrid inverter/charger offering dependable power with enhanced flexibility. It is capable of starting a 5-ton AC unit and supports up to 21kW of PV input. The unit can be paralleled with up to 10 other units, achieving a total output of 160kW. It provides 16kW of continuous output power with PV and battery, and up to 12kW using battery alone. Three individual MPPTs offer optimal control over solar needs. The updated EG4 monitoring software enables convenient total remote management, including mobile notifications and remote settings. Seamless interaction with the EG4 GridBOSS allows users control over the entire Energy Storage System (ESS).
Key Features:
- HIGH FREQUENCY SPLIT-PHASE DESIGN
- ALL-IN-ONE HYBRID INVERTER: Capable of running off-grid, using grid electricity, and selling power back to the grid.
- UP TO 600VDC INPUT: Enables lower cable sizing for the 3 MPPTs and a maximum recommended PV input of 24kW, eliminating the need for a combiner box.
- PLUG-IN WI-FI DEVICE: Enables wireless connection for remote system management via the EG4® app or EG4 Monitor system.
- CLOSED-LOOP COMMUNICATIONS: Compatible with EG4 48V batteries and other battery brands. A firmware update is required for closed-loop communications with LifePower4 batteries.
- RAPID SHUTDOWN: CSA C22.2#330:2017 and NEC 690.12 ready with built-in RSD capabilities.
Dimensions: 30.43 in. (773 mm) height x 22.28 in. (566 mm) width x 11.22 in. (285 mm) depth.
Warranty: *10-YEAR WARRANTY
Remote Adjustment: VIA EG4 SOFTWARE
Model #: IV-16000-HYB-AW-FX-XX (XX is a number between 00-99)
Certifications: CULUS Listed
Technical Specifications
AC Input/Output & Efficiency
| Parameter | Value |
|---|---|
| INVERTER TYPE & MODEL # | HYBRID IV-16000-HYB-AW-FX-XX (XX is a number between 00-99) |
| NOMINAL GRID VOLTAGE (INPUT & OUTPUT) | 120/240 VAC; 120/208 VAC (L1/L2/N required) |
| FREQUENCY | 60 Hz (Default) | 50 Hz |
| MAX. CONTINUOUS OUTPUT POWER | 12kW |
| MAX. APPARENT POWER | 12KVA |
| MAX. CONTINUOUS CURRENT @ 25°C | 66.7A |
| MAX. CONTINUOUS DISCHARGE W/ PV & GRID ONLY @ 25°C | w/ PV: 16000W @240V | 13800W @208V w/ out PV: 12000W @240V | 12000W @208V |
| POWER FACTOR (OUTPUT) | .99 @ Full Load |
| PEAK POWER | 24000W (.5 sec) | 18000W (1 sec) 15000W (6 min) | 13200W (12 min) |
| MAX OUTPUT FAULT CURRENT | 156A |
| MAX PASSTHROUGH FROM GRID | 90A |
| THD V (VOLTAGE) | <5% at full load |
| THD I (CURRENT) | <5% at full load |
| BACKUP SWITCHING TIME (TRANSFER TIME) | 20ms (Default), 10ms (Configurable) |
| OPEN LOOP RESPONSE TIME (OLRT) | <2 sec |
| TIME TO STEADY STATE | 10 sec |
| MAX CONTINUOUS LINE WATTAGE | 6000W |
| MAX. AC CURRENT | 50A @ 240V | 57.7A @ 208V |
| MAX. AC INPUT POWER | 12kW |
| EFFICIENCY: BATTERY TO GRID/LOAD | 94% |
| EFFICIENCY: PV TO GRID/LOAD | 97% |
| EFFICIENCY: PV TO BATTERY | 94.5% |
| CEC EFFICIENCY (CALIFORNIA ENERGY COMMISSION) | 96.9% |
Solar Technical Specs
| Parameter | Value |
|---|---|
| MAX. SOLAR STC INPUT POWER | 21kW |
| MAX. PV INPUT VOLTAGE | 600VDC |
| MPPT VOLTAGE RANGE (*) | 120-440 VDC |
| MPPT FULL POWER VOLTAGE RANGE | 250-440 VDC |
| # OF MPPTS | # OF STRINGS PER MPPT | 3 | 2 (MPPT 1) | 2 (MPPT 2) | 1 (MPPT 3) |
| MAX. CURRENT PER MPPT | 26A (MPPT 1) | 26A (MPPT 2) | 15A (MPPT 3) |
| MAX. SHORT CIRCUIT CURRENT RATING PER MPPT | 31A (MPPT 1) | 31A (MPPT 2) | 19A (MPPT 3) |
| NOMINAL MPPT VOLTAGE | 360 VDC |
| LOAD OUTPUT MINIMUM VOLTAGE | >140 VDC |
| UNIT STARTUP VOLTAGE | 100 VDC |
Battery Technical Specs
| Parameter | Value |
|---|---|
| COMPATIBLE BATTERY TECHNOLOGIES | Lead-acid/Lithium |
| OPERATING VOLTAGE | 40-60VDC |
| NOMINAL VOLTAGE | 48V |
| MAX CHARGE/DISCHARGE CURRENT | 250ADC |
| BATTERY COMMUNICATION PROTOCOL | CAN/RS485 |
| BATTERY CHARGING/DISCHARGING RIPPLE CURRENT | <5% |
Environmental and General Specifications
Environmental
| Parameter | Value |
|---|---|
| OPERATING TEMPERATURE RANGE | -13° – 140°F (-25° – 60°C) |
| OPERATING HUMIDITY | 0-100% relative humidity |
| MAX ALTITUDE OF OPERATION | <6561 ft (<2000 m) |
| ENCLOSURE RATING | NEMA 4X |
| STORAGE TEMPERATURE RATING | -13° – 140°F (-25° – 60°C) |
| COOLING (OR COOLING CONCEPT) | Fans |
General Specifications
| Parameter | Value |
|---|---|
| DIMENSIONS (H x W x D) | 30.43 × 22.28 × 11.22 in. (773 × 566 × 285 mm) |
| TOTAL WEIGHT | 121 lbs. (55 kg) |
| MOUNTING OPTION(S) | Wall mount |
| USER INTERFACE | APP/WEB/LCD (optional) |
| SCALABILITY | 10 units |
| INVERTER IDLE CONSUMPTION @ NO LOAD | <65W @ 25C |
| NOISE | <50dB @ 3 ft |
| LOCKED ROTOR AMPS | 195A |
Compliance and Safety
Compliance
- UL1741, SA, SB, PCS CRD California Rule 21 Phase I, II, III
- CSA 22.2.107.1:2016 Ed. 4
- CSA 22.2.330:2017 Ed. 1
- IEEE 1547.1:2020; IEEE 1547:2018
- Hawaii Rule 14H [HECO SRD IEEE 1547.1-2020 Ed.2]
- Arc-Fault Circuit Interrupter (AFCI) NEC 2020:690.11/UL1699B
- Ground Fault Monitoring (GFDI) NEC 2020:690.41(B)
- Rapid Shutdown (RSD) NEC 2020:690.12
Protections
- Integrated DC disconnect
- Reverse polarity protection
- Output over-voltage protection varistor
- Output over current protection
- Ground fault monitoring
- Grid monitoring
- Pole sensitive leakage current monitoring unit
- AFCI
- RSD
Emissions
FCC Part 15, Class B
Safety Notes
*When sizing the system, it is best practice to follow the nominal MPPT voltage specifications and not the minimum/maximum voltage of the MPPT voltage range.
Changelog
- v1.2.4: Added spec: Battery charge/discharge ripple current: <5%
- v1.2.3: Corrected typos
- v1.2.2: Removed redundant specification "Max continuous per line wattage" from specs
- v1.2.1: Added an asterisk to MPPT Operating Voltage Range line in spec sheet; Added note after the spec sheet regarding MPPT Voltage Range asterisk
- v1.2.0: Added Load Output Minimum Voltage line and value to spec sheet
- v1.1.9: Reformatted Spec Sheet; Added OLRT & Time to Steady State to Spec Sheet; Corrected typos; Modified max # of units in parallel from 16 to 10
- v1.1.8: Added surge capacity ratings; Modified weight of unit
- v1.1.7: Added Locked Rotor Amps (LRA) value to spec sheet
- v1.1.6: Added "Full Power MPPT Voltage Range" to PV input data section; Removed (pending) from FCC Part 15, Class B
- v1.1.5: Modified Nominal Power Output in spec sheet
- v1.1.4: Modified model # format on cover page
- v1.1.3: Modified intro. paragraph for clarity on paralleling output wattage
- v1.1.2: Updated Warranty Information
- v1.1.1: Correct QR code on cover page; Modified verbiage in top paragraph to better highlight key features; Modified FCC Part 15, Class B to show (pending)
- v1.0: Published
