Yotta SolarLEAF SL-1000 Manuale utente

SolarLEAF (SL-1000) User Manual

755-00001 |REVISION 5 |NOVEMBER 1, 2022

www.yottaenergy.com

755-00001 | SolarLEAF™ SL-1000 USER MANUAL| REVISION 5|2

Attention: IMPORTANT SAFETY INSTRUCTIONS. SAVE THESE INSTRUCTIONS.

INSTALLING COMPANY/ORGANIZATION NAME___________________________________________________________________

PROJECT SUPERVISOR ______________________________________________________________________________________

INSTALLATION DATE ________________________________________________________________________________________

WARNING: NO USERSERVICEABLE

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INSTRUCTIONS

Table of Contents

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

SOLARLEAF SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SolarLEAF System Components 4

Mechanical Installation 4

TRANSPORTATION AND STORAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

OPERATION AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Activating the System 7

De-Activating the System 7

Grid-Outage and Rapid Shutdown 7

Deactivating the system 7

DISPOSAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

TECHNICAL SUPPORT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

CONTACT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

APPENDIX A: SolarLEAF PV-Coupled Energy Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1

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Introduction

SolarLEAF System

SOLARLEAF SYSTEM COMPONENTS

• YOTTA SolarLEAF solar module-level storage

[See

Appendix A

for additional detail]

MECHANICAL INSTALLATION

DC In

DC Out

WARNING: Ensure the DC jumper wires from the SolarLEAF to the solar

panel and microinverter are plugged into the correct terminals on the

SolarLEAF or damage will occur and void the warranty. Take note of the

DC input and DC output (Marked OUT- and OUT+) terminal locations on

the SolarLEAF shown below. Note: SolarLEAF weighs 25.7kg, or 56.7 lbs.

SolarLEAF should always be lifted by 2 people by grasping the ange on

the perimiter of the top of the unit.

Avoid mounting the SolarLEAF in a location that will interfere with the PV modules. Seperate SolarLEAFs by a minimum of 50cm. Mount SolarLEAFs a

minimum of 6cm from the roof. To comply with NFPA 855, no more than 600 SolarLEAF battery storage systems can be installed on a single roof.

Warning: Outdoor commercial use only. Not intended for marine environments or seismic locations. The system shall be installed in accordance with

local electrical, building, re and other codes or utility requirements as applicable to the installation and equipment, by qualied service personnel in

accordance with the installation instructions and appropriate practices.

WARNING: AC power to the microinverters SHOULD NOT be turned on at this point of installation.

The SolarLEAF™ is a PV-coupled micro energy

storage unit with in-built thermal regulation

technology to minimize balance of system costs

and the added complexity of installing storage

alongside solar projects. Each SolarLEAF™ has

two pairs of DC ports (IN and OUT). The unit re-

ceives energy from one or more solar PV modules

on the input port and connects to an inverter on

the output port to deliver power to the load.

Orient the cables of the SolarLEAF as shown.

Lower the SolarLEAF into the ballast rails on

the racking.

Insert a 370-00018 bolt, though the foot of

the SolarLEAF and a slot in the ballast rail.

Attach a 370-00016 WASHER, FLAT and 370-

00021, NUT, EXT TOOTH LW, and torque to

10.9Nm. (8 lbf-ft)

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ELECTRICAL INSTALLATION

The SolarLEAF system is an extension of existing solar systems with micro-inverters, where the ESS resides between the PV module and the micro-in-

verter. This schematic shows 4 PV panels connected to 4 SolarLEAFS connected to one 4 input micro-inverter. All connections to the Solar LEAF are low

voltage DC (<60Vdc).

• Input: Connect the (+/-) DC wires from the PV (MC4 compatible) to the Input ports (Marked PV - and PV+) of the SolarLEAF (MC4 compatible) .

• Output: Connect the (+/-) DC wires from the SolarLEAF (Marked OUT- and OUT+) to the positive and negative terminals of the coresponding channel

of the microinverter input port.

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Transportation & Storage

TRANSPORTATION

The SolarLEAF will be shipped at a SOC level of 30% to ensure transportation and storage safety. The units will be in a state of deep-sleep.

• Battery & cells are monitored by the BMS

• Battery port is disconnected from the rest of the power electronics

• All (wireless and wired) communication is turned o within the SolarLEAF

STORAGE

Unmated plug connectors must be protected from moisture and dirt with a sealing cap (MC4 Article PV-BVK4 for sockets and PV-SVK4 for plugs). The

male and female parts must not be plugged together when soiled.

PV-BVK4 PV-SVK4

Operation & Maintenance

ACTIVATING THE SYSTEM

The individual units come plug-and-play ready. After connecting the inverter to a valid grid connection, the output of the currently-sleeping SolarLEAF

should be connected to an available pair of ports on the inverter. The SolarLEAF will automatically WAKE, when it detects a voltage greater than 12V DC

on its PV port—so connecting the associated PV panel with the PV port will turn the unit on.

MODES

1. Charging: The key to long-term health and reliability of a module-level battery system is the ability to maintain routine charge and discharge across

all the units within the system. The SolarLEAF has a built-in MPPT charger that converts solar energy and charges the battery. The MPPT helps maxi-

mize solar power, especially in cases of module shading or soiling.

2. Time-of-Use Shifting: The SolarLEAF has the ability to store power until a user-dened time using a time-of-discharge prole. The prole instructs the

SolarLEAF when to produce output port power and the minimum amount of power to produce as long as it is available. After the prole is created, it

is then sent to and stored in the SolarLEAF.

3. PV Smoothing: If the battery is full and the SolarLEAF is in the PV pass-through mode, the power generated from the PV port is pushed to the Out

port. The Out port is set to track the power of the PV port, but at a slower rate than the rate at which the PV power level changes. This creates a

smoothing eect, or a low-pass ltering eect. The Out port can also be set to a constant output, and as long as there is power available from the

battery, the Out port will maintain this constant output power.

4. Grid-Outage / Rapid Shutdown: During a grid outage, the micro-inverters that route the SolarLEAF’s energy into AC are compliant with RSD require-

ments as dened in the micro-inverter’s datasheet.

DEACTIVATING THE SYSTEM

For more than a week of storage, ensure that the SolarLEAF units are at 30% SOC.

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For more than a week of storage, ensure that the SolarLEAF units are at 30% SOC.

To deactivate the system, the unit’s PV port cables should be disconnected from the PV panel and the Output port cables should be disconnected from the

inverter.

Disposal