Sol-Ark L3 HVR Indoor Battery Bank User Manual

Sol-Ark L3 HVR Indoor Battery Bank

Product Specifications

• Product Name: L3 Series Limitless LithiumTM Outdoor Battery Energy Storage System
• Manufacturer: Sol-Ark
• Website: www.sol-ark.com

Product Description
The L3 Series Limitless LithiumTM Outdoor Battery Energy Storage System is a high-capacity battery system designed for outdoor use. It provides reliable energy storage for various applications.

Specifications

• General Description: Outdoor Battery Energy Storage System
• Capacity: High-capacity
• Manufacturer Contact: (USA) +1 972-575-8875 ext. (2)

Installation Instructions

1. Transportation and Lifting
   Ensure proper handling during transportation and lifting to prevent damage to the system.

2. Site Preparation
   Prepare the installation site according to guidelines provided in the manual to ensure a stable foundation for the system.

3. Mechanical Assembly
   Follow the step-by-step instructions for mechanical assembly to correctly install the system components.

4. Seismic Installation Guidelines
   For areas prone to seismic activity, follow the specific guidelines provided to secure the system in place.

FAQ

• Q: Where can I find the latest product specifications and information?
  A: For complete product specifications and relevant product listings, refer to the Product Datasheet available at www.sol-ark.com

• Q: How can I contact support for this product?
  A: For support, contact Sol-Ark at (USA) +1 972-575-8875 ext. (2) or email support @sol-ark.com

INSTALLATION GUIDE
AND USER MANUAL

L3 SERIES LIMITLESS LITHIUM™

READ THE INSTRUCTIONS COMPLETELY BEFORE OPERATING THE EQUIPMENT
While a best effort is made to ensure all specifications and descriptions contained in this document are accurate at the time of publication, Sol-Ark reserves the right to make product modifications at any time without advance notice.
For the latest Sol-Ark product and installation documents, visit: www.sol- ark.com
For errors, omissions, or suggestions, contact support@sol- ark.com
For complete product specifications and information on relevant product listings and certifications, refer to the Product Datasheet available at www .sol-ark.com

DISCLAIMER
UNLESS SPECIFICALLY AGREED TO IN WRITING:
Sol-Ark assumes no responsibility or liability for any damages, property loss, personal injury, or any adverse consequences resulting from improper use and installation of the product or the failure to adhere to the guidelines provided in this document. Users are expressly advised to follow the instructions and guidelines outlined in the documentation accompanying the product. Sol-Ark shall not be liable for any damages or losses incurred due to deviations from recommended usage, installation, or maintenance procedures. By using the product, users acknowledge their understanding of these disclaimers and agree to use the product at their own risk. Sol-Ark reserves the right to update or modify product information, specifications, and guidelines without prior notice.
Sol-Ark retains the right to final interpretation of this document and all related materials pertaining to this product. This document is subject to modifications, updates, revisions, or termination without prior notice. For the latest product information, please visit Sol-Ark’s official website. www .sol-ark.com
This manual is only for the L3 Series Limitless Lithium™ Outdoor Battery Energy Storage System.
For support, contact:
(USA) +1 972-575-8875 ext. (2)
support@sol-ark.com

IMPORTANT INSTRUCTIONS

This manual provides crucial information for the installation and operation of the L3 Series Limitless Lithium™ Battery Energy Storage System. Qualified and authorized personnel are required to conduct the installation and maintenance procedures adhering to all safety standards and system requirements outlined in this document.
This manual is applicable to countries that comply with the certification requirements. Standards and legal requirements of other countries might differ from the specifications outlined in this manual.
To secure the full product warranty, the L3 system must be registered by completing the warranty verification process and sending the information to Sol-Ark.

SYMBOLS THAT APPEAR IN THIS DOCUMENT

WARNING: This symbol indicates information that, if ignored, could cause serious injury, equipment damage, or death.
CAUTION: This symbol indicates information that, if ignored, could result in minor injury or equipment damage.
NOTE: This symbol indicates relevant information that is not related to hazardous situations.

NOTICES

ATTENTION: Read all instructions and cautionary markings in this document and on the equipment before installing the L3 HVR. Failure to do so may result in equipment damage, electric shock, serious injury, or loss of life. Failing to follow any of these instructions may also void the warranty.
All installations must conform to the laws, regulations, codes and standards applicable in the jurisdiction of installation. Before starting an installation, consult a local building or electrical inspector for current requirements. Local codes may vary but are adopted and enforced to promote safe electrical installations. A permit may be needed to do electrical work, and some codes may require an inspection of the electrical work.
When installed in the US electrical installations are required to follow the National Electrical Code (ANSI/NFPA 70) adopted by their local AHJ (Authority Having Jurisdiction) including any local amendments.

General

• WARNING: Risk of electric shock. Risk of fire. Only qualified electrical personnel should install, troubleshoot, service, or replace the equipment.
• WARNING: Risk of electric shock. Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices during installation and service. Turn off all power supplying this equipment before working on or inside equipment. Always use a properly rated voltage sensing device to confirm power is off. Replace all devices, covers, and doors before turning on power to the equipment.
• WARNING: Inspect the equipment for damage before installing. Do not install the equipment if it has been damaged in any way.
• WARNING: Do not insert foreign objects into any part of the equipment.
• WARNING: Do not expose the equipment or any of its components to direct flame.
• WARNING: Do not attempt to open, disassemble, repair, tamper with, or modify the equipment other than what is permitted in this manual. The equipment contains no user-serviceable parts. Contact the installer who installed the equipment for any repairs.
• WARNING: Do not connect life-support systems, other medical equipment, or any other use where product failure could lead to injury to persons or loss of life.
• CAUTION: Do not use solvents to clean the equipment or expose the equipment to flammable or harsh chemicals or vapors. Do not allow petroleum-based paints, solvents, or sprays to contact nonmetallic parts of the equipment.
• CAUTION: Do not use parts or accessories other than those specified for use with the equipment.

Installation and Use

• WARNING: Risk of electric shock. Risk of fire. Only use electrical system components approved for dry locations.
• WARNING: Risk of electric shock. Risk of fire. Ensure that all wiring is correct and that none of the wires are pinched or damaged.
• WARNING: Risk of electric shock. Risk of fire. Before making any connections verify that the DC disconnect(s) are in the off position. Double check all wiring before applying power.
• WARNING: Risk of electric shock. Improper servicing of the equipment or its components may result in a risk of shock or fire. To reduce these risks, disconnect all wiring before attempting any maintenance or cleaning.
• WARNING: Risk of electric shock. Always de-energize the equipment before servicing.
• WARNING: Risk of electric shock. Do not use equipment in a manner not specified by the manufacturer. Doing so may cause injury or loss of life, or damage to equipment.

NOTE: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not  expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Environmental Conditions
WARNING: This equipment is intended for operation in an environment having a minimum temperature of -20°C (-4°F) and a maximum temperature of 50°C (122°F).
WARNING: Install the equipment in a location that prevents damage from flooding. Ensure that no water sources are above or near the equipment, including downspouts, sprinklers, or faucets.

NOTICES : Transportation and Handling

WARNING: To protect the equipment and its components from damage when transporting, handle with care. To help prevent damage, leave all equipment in its shipping packaging until it is ready to be installed.
WARNING: Risk of physical injury or death. The battery rack is not designed for transportation with modules installed. Do not attempt to lift a fully installed rack using any lifting device.
WARNING: Risk of physical injury or death. Vehicles used to transport Lithium-ion batteries must comply with all DOT transportation regulations surrounding Class 9 hazardous freight.
WARNING: Risk of physical injury or death. Use caution when using lifting equipment to move battery modules and components.
WARNING: Risk of physical injury or death. Boxed battery modules stacks should not exceed 8 units.
WARNING: Risk of physical injury or death. Each battery module weighs 44 kg (97lbs). Use appropriate transport and lifting equipment for safe handling and transport.
WARNING: Risk of physical injury or death.

Product Recycling

• Due to the considerable size, the L3 HVR series battery storage system requires special handling to be recycled properly. For more information on locating recycling resources in your area, please visit our website at sol-ark.com/recycling.
• Proper recycling is crucial for lithium storage batteries. It keeps hazardous waste out of landfills and allows reusable materials like lithium and other metals to be recovered and repurposed. As the owner of the system, you are responsible for ensuring proper end-of-life recycling takes place through a certified lithium battery recycling program.
• You must not attempt disposal via normal waste collection or abandon the battery at a public facility. Please reference our website or call us for more details as soon as you know your energy storage system has reached its end of usable life

Requirements for Installation Personnel
All work MUST comply with local code, regulations, and industry standards. The installation of the L3 system can only be completed by qualified persons with appropriate qualifications as determined by the local AHJ.

L3 Series: At a First Glance

INSPECT SHIPMENT
The box should include all items shown in the component guide. If there are damaged or missing parts, immediately call Sol-Ark customer support at +1 972-575-8875 Ext. 2.
COMPONENT GUIDE
The L3 HVR battery energy storage system includes the following components:

General Description

L3 HVR FASTENER TORQUE TABLE
Do not use impact drivers to tighten any fasteners on the cabinet or inverter

Specifications

DAT ASHE E T
L3 SERIES LIMITLESS LITHIUMTM
Battery Energy Storage System
Battery Model Name:
ESS Model Name:
Sol-Ark Product SKU:

L3 HVR-60
L3 HVR-60KWH-30K L3-HVR-60KWH

L3 HVR-60
L3 HVR-60KWH-60K L3-HVR-60KWH

System Data

Mechanical Specifications
Product Dimensions (WxDxH)| 76x107x226 cm (30x42x89 in)
Net Weight| 950 kg (2,095lbs)
Mounting Type| Outdoor Enclosure
Material and Finish| Steel — Corrosion Resistant Powder Coat
Operating Temperature 3| -20°C — 50°C (14°F — 122°F)
Humidity| 5%—85% RH
Operating Altitude 4| 3000m (9,843 ft)
Storage Conditions 5| -4ºF — 95ºF up to 85% RH (non-condensing) — State of Charge (SOC) 30%
Ingress Rating| IP55 (NEMA 3R)
Noise Level @ 1m| 75 dBA at 30°C (86°F)
Seismic Zone| Up to Category F
Communication Ports| CAN2.0/RS485
Battery Module Specifications
Battery Module Configuration| 6s2p| 12s1p
Battery Module Energy| 5.12kWh
Battery Module Nominal Voltage| 51.2V
Battery Module Nominal Capacity| 100Ah
Warranty and Certification
Performance Warranty 6| 10 years or 196MWh Throughput
Product Warranty| 10 Years
Certifications| UL1973, UL9540, UL9540a, UN38.3, FCC, Prop 65

1. DC usable energy, test conditions: 90% DOD, 0.3C charge and discharge at 25ºC. Usable system energy may vary due to system configuration parameters.
2. Output current is affected by battery temperature and SOC.
3. Temperature is based on the average cell temperature as measured by the BMS. Battery charging is disabled below 0°C (32ºF). Derating occurs above 45°C (113ºF). For HVR model, operating temperature range only applies if using included climate controls. See Sol-Ark technical sales for planning outdoor sites.
4. Battery will operate at a maximum of 1C charge/discharge up to 2000m, above 2000m maximum output is derated to 0.8C, contact Sol-Ark for details.
5. Storage temperature of the battery with no charge or discharge.
6. Operating Conditions 77ºF±7ºF 0.5C/0.5C, EOL (End of Life) 70% retained capacity.

Installation

System Description
The L3 HVR Series Limitless Lithium™ is a high-performance lithium-ion battery system designed for outdoor energy storage applications. It offers reliable and efficient power solutions for time-of-use management, peak shaving, backup power, and micro-grid integration. The L3 HV-60 model features a gross capacity of 61.44 kWh per cabinet with the ability to be stacked up to 36 units allowing for 2.2MWh of total storage capacity, making it suitable for various energy storage requirements.

Advanced Battery Management System (BMS)
The HVR Series is equipped with a sophisticated automotive-grade contactor- based BMS. This advanced system continuously monitors and manages the voltage, current, and temperature of all battery modules and cells, ensuring optimal performance and safety.

Comprehensive Fire Safety Features
Safety is a top priority in the design of the L3 HVR Series. The system incorporates built-in aerosol fire suppression systems in both the cabinet and battery modules. Additionally, it features smoke, heat, and CO2 detection mechanisms, providing multiple layers of protection against fire hazards.

Transportation and Lifting

Forklift
If the installation site has a flat surface level, you can use an outdoor rated forklift for transport provided it has a rated load capacity of more than 1500 kg (3300 lbs) and its fork length meets the requirements shown in the illustration below. The bottom of the L3 HVR cabinet has special openings designed for forklift transport.

Overhead Hoisting
When hoisting, a 25-ton crane with a lifting arm between 126 to 133 feet (38.5 to 40.5 m) in length should be used. The following requirements must be met when lifting the L3 HVR:

• All safety requirements must be met.
• A professional instructor is needed in the whole hoisting process.
• The strength of the sling ACused should be able to withstand the weight of the devices.
• Ensure that all sling connections are safe and reliable, and that the lengths of the slings connected to the corner fittings are equal.
• The length of the sling can be adjusted appropriately according to the actual requirements of the site.
• During the lifting process, the devices must be stable and not skewed.
• Please lift the devices from the bottom.
• Take all necessary auxiliary measures to ensure the safe and smooth lifting of the devices.

Site Preperation

Basic Installation Requirements
The battery energy storage system must be installed on a level, solid foundation capable of safely bearing the total weight of the system when fully loaded with battery modules.

• The installation location must provide adequate clear space around the system for ventilation, cooling, maintenance access, and clearances in accordance with this documentation and the National Electrical Code®, Art. 110.26 or other local requirements for energy storage systems.
• Fully enclosed or indoor installations will require additional ventilation and/or fire protection systems per local codes.

Outdoor Installations Requirements

• The foundation should be constructed with proper drainage sloping away from the foundation to prevent pooling of water near the cabinet base.
• The foundation pad must extend at least 24 in beyond the footprint of the system on all sides.
• Must be located away from potential flood zones, drainage areas, or other areas prone to standing water.
• Shaded locations are preferable to reduce cooling load.
• The area should have adequate fencing and lighting as required by local building and mechanical code or other requirements for energy storage systems.

Foundation Details

Single Cabinet Foundation Detail

Multi-Cabinet Foundation Detail (Option A)

Multi-Cabinet Foundation Detail (Option B)

Mechanical Assembly

1. Install the Mounting Feet
   After lifting the cabinet into its final location, attach the included L-shaped mounting feet to the cabinet using the provided bolts (M10x30mm) [Step 1] and tighten to 37ft-lb (51 N-m) [Step 2] as shown in the figure below:

2. Anchor the Cabinet to the Foundation
   The cabinet mounting feet should be secured to the concrete foundation using one of the two methods shown in the figures below or using a method with equivalent strength as determined by a licensed design professional.

Inverter Mounting
Method A – Direct installation of the inverter

• If installing the inverter directly to the L3 HVR cabinet use the following method:
• Remove the M12 bolts on the cabinet exterior using a 12mm wrench and install the inverter mounting carrier onto the wall of the cabinet as shown in the left figure. Tighten to a torque of 74 ft-lb (100N-m).
• Lift the inverter on the carrier, then secure the inverter to the mounting carrier with six (6) of the M4x12mm socket head screws provided. Tighten to a torque of 12 in-lb (1.37N-m).

Method B – External installation of the inverter

• Use screws or anchors suitable for the mounting surface and capable of supporting the weight of the inverter 176lb (80kg).
  • For Concrete or Masonry Mounting: Use a minimum of four (4) M12x60mm expanding anchors (not included).
  • For Wood Frame Mounting: Use a minimum of four (4) 1/2in lag screws with flat washers (not included), making sure to anchor into at least 2 framing members.
  • For Metal Framing Mounting: Use a minimum of four (4) 1/4in self-tapping metal screws with flat washers (not included).
  • In the case a different anchorage method is required, calculate the number of anchor points needed to properly hold the weight of the equipment.
• Secure the inverter to the mounting carrier with six (6) of the M4x12mm socket head screws provided, then tighten to a torque of 12 in-lb (1.37N-m).

Seismic Installation Guidelines
When installing the L3 HVR cabinet, it is important to follow all attachment and bracing requirements outlined in this manual to ensure structural integrity during a seismic event. The installation contractor should consult their local AHJ or licensed design professional regarding specific installation requirements for their site or area.

DO NOT USE concrete screws (e.g. Tapcon) or wedge/expanding anchors to attach the Sol-Ark cabinet to a concrete foundation. The supplied cabinet mounting feet must be secured to the foundation according to the installation methods in Section 2.3.
After completing the cabinet assembly, the total weight of the battery energy storage system is 950 kg (2,095 lbs).

System Overview

the event of significant heat or smoke
6| Exhaust Fan| Prevents the buildup of hazardous gas during a thermal event
7| CO2/Combustible Gas Sensor| Detect hazardous gases to activate fire suppression system and ventilation.
8| Integrated System Controller| Manages sensor inputs and activates fire or ventilation systems
9| Signal and 24V Power Distribution| Sensor power and signal distribution.
10| 24V Power Supply| Power supply unit for HVAC, indicators, and other support systems in the cabinet.
11| I/O and Power Distribution| Terminal block to supply power and signals throughout the cabinet.
12| Cabinet Circuit Breakers| Breakers/disconnects for cabinet power circuits (Main, BMS, HVAC)
13| Auxiliary Input Wiring Area| Input terminals for AC auxiliary power feed

Battery Overview

BMU (Battery Management Unit)

Battery Module

Electrical Installation

DC Battery Wiring

High Voltage risk of electric shock. Always de-energize the equipment before servicing.
Before wiring the system, ensure the DC disconnect switch of the BMU is turned OFF and the MSD is disconnected.

Sol-Ark 60K-3P-480V – (12s1p Wiring)

• Install the 220 mm battery conductor from the positive Amphenol battery connector (B+) of the BMU to the positive Amphenol battery connector (B+) of the closest battery module (last module from top to bottom).
• Install the 200 mm battery conductors from module to module. Ensure connection in series from the negative Amphenol battery connector (B-) of the first battery module to positive Amphenol battery connector (B+) of the subsequent battery module.
• Connect the remaining battery conductors in the same manner.
• Install a long battery conductor from the last battery module (first module from top to bottom) to the BMU. This is done by linking the negative Amphenol battery connector (B-) of the last module to the remaining unconnected negative Amphenol battery connector (B-) of the BMU.
• Connect the grounding wire from the BMU to any available hole in the top crossbeam of the battery rack. Safely fasten it in position using M4 and M6 screws, respectively.
• Connect the cabinet ground points (as marked), either inside or outside the cabinet, to the equipment grounding conductor for the battery system.

High Voltage risk of electric shock. Always de-energize the equipment before servicing.
Before wiring the system, ensure the DC disconnect switch of the BMU is turned OFF and the MSD is disconnected.

Sol-Ark 30K-3P-208V – (6s2p Wiring)

• Install the 220 mm battery conductor from the positive Amphenol battery connector (B+) of the BMU to the positive Amphenol battery connector (B+) of the closest battery module (last module from top to bottom).
• Install the 200 mm battery conductors from module to module. Ensure connection in series from the negative Amphenol battery connector (B-) of the first battery module to positive Amphenol battery connector (B+) of the subsequent battery module.
• Connect the remaining battery conductors in the manner.
• Install a long battery conductor from the last battery module (first module from top to bottom) to the BMU. This is done by linking the negative Amphenol battery connector (B-) of the last module to the remaining unconnected negative Amphenol battery connector (B-) of the BMU.
• Connect the grounding wire from the BMU to any available hole in the top crossbeam of the battery rack. Safely fasten it in position using M4 and M6 screws, respectively.
• Connect the cabinet ground points (as marked), either inside or outside the cabinet, to the equipment grounding conductor for the battery system.

Communications Wiring
Module-Module Communication

• Connect one end to the BCOM communication port of the BMU. Subsequently, connect the other end to the BCOM IN communication port of the first module (the first module is the one directly above the BMU).
• Locate 11 pieces of the 110mm (4.3in) inter-battery communication cables that daisy chain the battery modules together.
• Connect one end to the BCOM OUT communication port of the first battery module. Connect the other end to the BCOM IN communication port of the subsequent battery module.
• Connect all remaining 110mm (4.3in) communication cables for the rest of the battery modules following as shown in Figure 6.

BMU Communications Ports

• The BMU has a pre-installed ethernet cable starting from the PCS port of the BMU going to SPD1 (surge protection device) inside the cabinet wiring area. To complete the wiring for closed loop battery-to-inverter communication run a user supplied, CAT5e or better, ethernet cable from the output of the SPD1 to the BMS1 port of the inverter.
• See section 2.9 “BESS and Inverter Wiring” for more BMU wiring details.

Auxiliary Power and Communications Wiring

Split Phase 240VAC L-L)
2| XT2| Live wire L2 terminal (208VAC  or 240VAC)L2 Input Terminal (3P-208V or Split Phase 240VAC  L-L)
3| XT3| Equipment Grounding Terminal
4| SPD1| Battery to PCS Ethernet Surge Protection

• The auxiliary input supplies power to the cabinet’s support systems such as the HVAC unit, sensors (smoke, heat, liquid), and indicator lights.
• When using a 60K-3P-480V inverter which natively supplies 277/480Vac output, the installation contractor will need to provide a 208 Vac or 240Vac power source to the XT1 and XT2 terminals to avoid damaging the cabinet. If required, one or more step-down transformer(s) with a rating of no less than 3kVa (per cabinet) should be used to provide a 208V or 240V supply voltage to their respective cabinet(s).
• Failure to follow these instructions could result in permanent damage to the battery cabinet.

Connection Requirements

Use Only 75°C Rated Copper (CU) Stranded or Solid Core Wire. Fine stranded wire must use a ferrule.

XT1, XT2

| 1| 12 AWG
2-3| 10 AWG
4-5| 8 AWG
6| 6 AWG
XT3| 1 – 6| 10 AWG (with 60A OCPD)
SPD1| 1 – 6| RJ45 – CAT5e or better

BESS and Inverter Wiring

• Begin wiring of the battery by first removing the inner and outer cover, as shown in the Figure 6, using a Phillips screwdriver.

• Using the included Pushlok-to-ring terminal cables connect each cable to their respective PCS+ and PCS- ports of the battery as shown by (A) of Figure 7.
• Using the same cables, connect the ring terminal side to the positive and negative battery busbar as shown by (A) of Figure 7.
• Connect the included 9.8ft (300cm) red cable from the positive busbar to the positive terminal of the inverter as shown by (B) of Figure 7.
• Connect the included 9.8ft (300cm) black cable from the negative busbar to the negative terminal of the inverter as shown by (B) of Figure 7.
• Plug in the MSD (Manual Service Disconnect) in the bottom left corner of the Battery Bank.
• Secure the MSD by rotating down the black handle to a horizontal position.
  • The MSD will complete the circuit, allowing for proper operation of the L3 HVR.
  • Before performing any maintenance procedure disconnect the MSD device to prevent electric shock.

Please note that 2x 9.8ft (300cm) cables are included in the shipment for the “B” connection shown above (battery busbar to Sol-Ark inverter).

Multi-Unit Wiring

• To parallel the L3 HVR battery with another unit, connect the previous L3 HVR’s positive and negative busbars to the subsequent L3 HVR’s busbar by using field supplied wiring, sized in accordance with the NEC, and in conduit or raceway suitable for wet locations to maintain the cabinets ingress protection rating.
• Using CAT5e or better ethernet cable connect the master battery HVBOUT port to the HVBIN port of the next battery in the multi-unit system.
• On the last battery in the stack install the 120Ohm RJ45 terminator into the HVBOUT port.

System Startup and Comissioning

Follow proper safety measures when powering-up and testing the system

Verify voltage of battery modules

1. The nominal voltage of battery module is 51.2V.
2. Measure and verify proper DC voltage between the B+ and B- connectors of the first battery module.
3. Repeat the measurement across ALL battery modules to confirm consistent voltage levels.
4. Once all battery modules have been verified, measure and verify proper high voltage level between the B- connector of the first battery module and B- connector of the last battery module.
5. Reattach the connectors and ensure all conductors are properly installed.

Powering On the L3 HVR

1. During initial commissioning, make sure the MSD is properly installed following depiction in the figure below.
2. Ensure the Surge Protection Device 2 breaker – QF5 is ON. SPD2 Should always stay ON.
3. Turn ON the Main Breaker – QF1.
4. Turn ON the Auxiliary PSU breaker – QF2.
5. PRESS the START button of the BMU to the ON position.
6. Turn ON the BMS PSU breaker – QF4.
7. Turn ON the HVAC breaker – QF3.
8. Reverse the steps to turn OFF the unit. SPD2 Should always stay ON.

System Power Cycle Sequence
If required during troubleshooting or maintenance use the following sequence to cycle power to the HVR cabinet systems.

DO NOT attempt a power cycle with the inverter under full load.

1. Turn OFF the HVAC breaker – QF3.
2. Turn OFF the BMS PSU breaker – QF4.
3. PRESS the START button of the BMU to the OFF position.
4. Rotate the DC disconnect handle counterclockwise to the OFF position.
5. Turn OFF the Auxiliary PSU breaker – QF2.
6. Turn OFF the Main Breaker – QF1.
7. Verify proper connectivity among ALL battery module connectors, the BMU, and the inverter within the L3 system.
8. Follow the Power ON sequence from the previous section to turn ON the L3 system.

Operation and Maintenance

Maintenance of the L3 System
Before any disassembly or maintenance, ensure that L3 system is powered off and appropriate lock-out-tag-out procedures have been followed. Failure to do so could result in injury or death.

For safe operation, it is essential to thoroughly inspect all components of the L3 system, including but not limited to system conductors, connectors, wiring between modules, BMU, and ground. The following maintenance tasks and inspections should be carried out by a qualified professional:

To clean any part of the battery enclosure, BMU, or modules, use a damp cloth to wipe down any surfaces, no harsh solvents or cleaning products should be used. Ensure that the battery connections remain free from any moisture.

Maintenance Schedule

Appendix A
Interior – Visual Mechanical Inspection| 12 months| Refer to Maintenance Appendix A
Inspect Cabinet Ventilation Ports Operation| 6 months| Refer to Maintenance Appendix A
Verify Battery Equipment Grounding| 12 months| Refer to Maintenance Appendix A
Replace HVAC Intake Air Filter| 6 to 12 months| Refer to Maintenance Appendix A
Inspect HVAC Condensate Drain| 6 to 12 months| Refer to Maintenance Appendix A

Fire Suppression System
The L3 HVR series features an integrated aerosol-based fire suppression system at the battery module and cabinet level. In the rare event of a thermal runaway, the aerosol canister would rapidly deploy, filling the battery module interior with non-toxic agent to suppress any potential fire before spreading. This unique, industry-leading safety capability from Sol-Ark ensures maximum protection for commercial and industrial users.
Module Level: Contained in each module is a 12-gram aerosol agent canister, this proprietary system activates automatically when heat inside the module reaches potentially unsafe levels due to thermal runaway or external fires (185°C ±10°C).
Cabinet Level: Inside each cabinet a larger 300-gram aerosol canister is located in the top right corner. This unit is electronically activated based on signals from the fire detection sensors inside the cabinet (smoke, heat, and CO2/gas) these will detect abnormal operating conditions and deploy the aerosol filling the inside of the cabinet.
Both suppression canisters have a warranted 10-year service life under normal conditions. However, it is important to avoid subjecting the canister to external impacts and corrosive or wet environments which could damage the units and impair their operation.

Deflagration Protection
When the CO2/hazardous gas detector “A” senses flammable gas in the cabinet, the exhaust fan “B” will turn on to exhaust flammable gases outside the cabinet.

BMS Firmware Update Process

1. The USB port of the BMU allows for upgrading firmware and logging battery data.
2. To update the firmware first format a USB 2.0 drive as FAT32, no larger than 8GB in size.
3. Place the upgrade file provided by Sol-Ark in the root directory of the USB drive.
4. Turn on the battery and insert the USB flash disk after the blue indicator is on.
5. After the blue light indicator flashes and turns off, pull out the USB drive to complete the upgrade. Do not turn off the battery during the process.
6. After the blue light indicator of the battery lights up again, verify the version number using the BMS diagnostic software or via the information displayed on the inverter.

Long Term Battery Storage
When storing the assembled battery system for periods longer than 2 weeks it is recommended that the following steps be performed.

• To maximize battery lifespan, maintain storage temperature between 13°C — 30°C (55°F — 86°F).
• Power on and cycle the battery at least once every 6 months to maintain the SOC within 30-50%.
• To minimize BMU self-discharge power down the cabinet systems following the procedures in Section 2.11
• In addition, disconnect the orange MSD from the battery. This interrupts the power supply to the BMU, preventing battery discharge from the BMU.

Error Codes

Description of System Faults

OT (Over Temperature)

| BMS negative connector overtemperature
BMS positive connector overtemperature
Pre-charge resistor overtemperature level-2 alarm
Heating film overtemperature level-2 alarm
Charge overtemperature level-2 alarm
Discharge overtemperature level-2 alarm
UT (Under Temperature)| Charge under temperature level-2 alarm
Discharge under temperature level-2 alarm
OC (Over Current)| Charge overcurrent level-2 alarm
Discharge overcurrent level-2 alarm
DV (Differential Voltage)| Excessive differential voltage level-2 alarm
DT (Differential Temperature)| Excessive differential temperature level-2 alarm
OV (Over Voltage)| Total charge voltage too high
Cell overvoltage level 2 alarm

UV (Under Voltage)

| Charge voltage too low
Total discharge voltage too low
Cell undervoltage level-2 alarm

OF (Other Fault)

| Abnormal numbers of BMU
BMU lost
RTC clock fault
Current module fault
SCHG total voltage acquisition fault
Abnormal RS485 communication
RS485 communication failure
PCS-CAN BUS communication failure
Repeated BMS address fault
Repeated BMU address fault
Abnormal power supply voltage
Heating relay adhesion
SOC too low
SOC too high
Fuse Blown
Charge Relay Welded
Discharge Relay Welded
Master Positive Relay Welded
Temperature Acquisition Failure
Cell voltage acquisition fault
Inter battery communication failure
Pre-charge failure
Insulation level 2 alarm
External total voltage acquisition fault
Internal total voltage acquisition fault
Current acquisition fault
Limit protection
EEPROM failure
ISO| Insulation level 2

Common Causes

or more than 140A for 2s; If the battery is operating below 5°C (41°F) then:

52.5A for 2s; more than 62.5A for 5s; or more than 70A for 2s;

Charge over-current protection
Discharge over-current alarm
Discharge over-current protection
Charge overtemperature alarm| Exceeding the parameter set value and set time (>45°C , 2s)
Charge overtemperature protection| Exceeding the parameter set value and set time (>50°C, 2s)
Discharge overtemperature alarm| Exceeding the parameter set value and set time (>50°C , 2s)
Discharge overtemperature protection| Exceeding the parameter set value and set time (>55°C , 2s)
Charge under temperature alarm| Exceeding the parameter set value and set time (<5°C , 2s)
Charge under temperature protection| Exceeding the parameter set value and set time (<0°C , 2s)
Discharge under temperature alarm| Exceeding the parameter set value and set time (<-10°C , 2s)
Discharge under temperature protection| Exceeding the parameter set value and set time (<-20°C, 2s)
Excessive differential voltage alarm| Exceeding the parameter set value and set time (>500mv, 2s)
Excessive differential voltage protection| Exceeding the parameter set value and set time (>800mv, 2s)
Excessive differential temperature alarm| Exceeding the parameter set value and set time (>10°C, 2s)
Excessive differential temperature protection| Exceeding the parameter set value and set time (>15°C, 2s)
Cell overvoltage alarm| To maintain consistency, cut off the charging immediately when the full charge calibration rated voltage of 3.6V is reached. When the voltage drops to 3.35V, restart it with the turned-off red light indicator. All protective red light indicators are always on!
Cell overvoltage protection
Cell undervoltage alarm
Cell undervoltage protection
Pre-charge resistor overtemperature alarm| Exceeding the parameter set value and set time (>55°C, 2s)
Pre-charge resistor overtemperature protection| Exceeding the parameter set value and set time (>65°C, 2s)
Insulation level 1| Exceeding the parameter set value and set time
Insulation level 2| Exceeding the parameter set value and set time
Heating film overtemperature alarm| Exceeding the parameter set value and set time (>75°C, 2s)
Heating film overtemperature protection| Exceeding the parameter set value and set time (>80°C, 2s)
BMS connector overtemperature alarm| Exceeding the parameter set value and set time
BMS connector overtemperature protection| Exceeding the parameter set value and set time
BMU connector overtemperature alarm| Exceeding the parameter set value and set time
BMU connector overtemperature protection| Exceeding the parameter set value and set time
Power loop overtemperature alarm| Exceeding the parameter set value and set time
Power loop overtemperature protection| Exceeding the parameter set value and set time
SOC too low| Exceeding the parameter set value and set time
Total voltage too high alarm| Exceeding the parameter set value and set time
Total voltage too high protection| Exceeding the parameter set value and set time
Total voltage too low alarm| Exceeding the parameter set value and set time
Total voltage too low protection| Exceeding the parameter set value and set time
Discharge relay adhesion| Relay feedback information state adhesion
Charge Relay Welded| Relay feedback information state adhesion
Heating Relay Welded| High voltage is detected after disconnecting the heating relay
Limit protection| Exceeding the parameter set value and set time
Abnormal power supply voltage| Exceeding the parameter set value and set time
Master positive Relay Welded| Relay feedback information state adhesion
Fuse Blown| No high voltage is detected after the relay is closed
Repeated BMU address fault| BMU with the same number
INTER-CAN BUS communication failure| Loss of communication between BMS
PCS-CAN BUS communication failure| The heartbeat message of the inverter has been not received for a long time
RS485 communication failure| Inverter RS485 access is not received for a long time
Abnormal RS485 communication| C
External total voltage acquisition fault| /
Internal total voltage acquisition fault| The difference between the acquired internal total voltage and the accumulated internal total

voltage exceeding the set value

SCHG total voltage acquisition fault| /
Cell voltage acquisition fault| The cell voltage acquired is 0
Temperature acquisition failure| The temperature acquired is -40℃
Current acquisition fault| /
Current module fault| Abnormal Hall current/reference voltage
EEPROM storage failure| EEPROM write failure during self-test
RTC clock fault| The external RTC failed to enable the charging function
Pre-charge failure| Pre-charge timeout
Charging voltage too low| The minimum cell voltage is lower than the set value
BMU lost| BMU message not received for a long time
Abnormal number of BMU| The number of BMU addresses is different from the number of set parameters

For more information, please contact us at: support@sol- ark.com or support phone: +1 972-575-8875, Ex. 2
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