Victron Energy Power System Integration Diagram

System Overview

This document details the wiring and integration of a comprehensive Victron Energy power system, designed for applications such as RVs and marine vessels. It illustrates the interconnection of battery storage, charging sources (solar, alternator), inverters/chargers, and central control systems for efficient power management.

Core Components

Battery Storage

The system utilizes two Victron Energy Blue Power 25.6V-300Ah NG LiFePO4 Lithium Batteries. These high-capacity batteries form the core of the energy storage, connecting to the distribution and management systems.

Battery Management and Distribution

The Victron Energy Lynx Smart BMS NG (models NG-1 and NG-2) acts as the Battery Management System for the lithium batteries, ensuring safe operation and communicating system status via VE.Can to the central controller. The Lynx Distributors (e.g., Lynx Distributor-1, Lynx Distributor-2) manage the positive and negative busbars, featuring high current ratings (up to 600A) and protected by Class-T 350A fuses for robust power distribution.

Inverters/Chargers

Two Victron Energy MultiPlus-II 24/5000/120 units are employed, configured for a split-phase AC output (providing 2x 120VAC and 1x 240VAC). These units function as inverters, battery chargers, and AC power managers, incorporating PowerAssist technology for peak load handling. They connect to the battery bank via the Lynx Distributors and to the central control unit via VE.Bus.

DC-DC Charging

Victron Energy Blue Power Orion XS 1400 (24-12/50A) DC-DC battery chargers are integrated to provide appropriate voltage conversion for various system components.

Solar Charging

Victron Energy SmartSolar MPPT 100/50 charge controllers are used to efficiently convert power from solar arrays into usable energy for charging the batteries. These controllers communicate using VE.Direct and VE.Can protocols.

Alternator Charging

A ZEUS Alternator Regulator (e.g., 24V-220A Arco A7000) is included to manage charging from the vehicle's engine alternator. Its operation can be controlled digitally via CAN Bus/VE.Can through the central controller or via an "Allow To Charge" (ATC) signal from the Lynx Smart BMS NG, offering redundant control.

System Control and Monitoring

The Victron Energy Cerbo GX serves as the central hub for system monitoring and control, integrating all connected devices through various communication protocols like VE.Can, VE.Bus, and Ethernet. The GX Touch 70 provides a user-friendly interface for real-time data display and system adjustments.

Load Protection

Victron Energy Smart BatteryProtect (SBP-220) units are utilized for protecting individual loads from over-discharge or voltage fluctuations. High-current busbars are protected by 60 Ampere Thermal Circuit Breakers.

System Integration and Control Logic

The system emphasizes integrated control through the Cerbo GX and the DVCC (Distributed Voltage Charge Control) feature. This ensures that all charging sources and loads are managed in coordination with the Lynx Smart BMS NG, optimizing the performance and lifespan of the Lithium NG batteries.

The ZEUS Alternator Regulator's charging function can be managed digitally via the Cerbo GX (using DVCC) or through the BMS's ATC signal. This dual control method provides a robust backup, ensuring charging stops when necessary, even if the primary digital communication fails.

DC loads are managed via ATD (Alternator To Discharge) power signals directed to SmartBattery Protect and Orion XS units. AC loads are managed in conjunction with the MultiPlus-II inverters/chargers.

Crucially, the SmartBatteryProtect units must be correctly programmed for Li-Ion mode and the system's operating voltage (e.g., 24V) via the device itself or a compatible smartphone/tablet.

Important Information and Warnings

For optimal system performance and safety, all battery cables (positive and negative) must be kept as short as possible and of equal length. Similarly, positive and negative cables for the MultiPlus-II units require careful management regarding length and size.

Wiring for the MultiPlus-II units, especially in split-phase configurations, necessitates adherence to standards like ABYC E-11 regarding cable size and fuse ratings to safely handle full load capacity. The primary case ground connection of the MultiPlus-II must be securely connected to the central negative busbar of the DC system.

When operating in inverter mode, the neutral output of an inverter charger must be connected to ground to ensure proper functioning of GFCI or RCD devices. In split-phase supplies, the neutral must also be grounded.

[warning] The 120/240 Volt AC power is extremely hazardous. Users should not touch any live wired parts of the installation. Consult a Victron dealer for advice if uncertain.

The ZEUS Alternator Regulator requires specific configuration using the application available at ARCOMARINE.COM/ZEUS. Proper functioning with Victron equipment also requires Venus OS firmware v3.14 or higher installed on the Cerbo GX. The alternator shunt is essential for DVCC operation.

The Cerbo GX's tank level ports offer flexibility, configurable for European (0-180 Ohm), US (240-30 Ohm) tank senders, or custom resistance ranges (0-300 Ohm), provided firmware v2.80 or higher is installed.

External Resources

For detailed configuration and troubleshooting of the ZEUS Alternator Regulator, please visit ARCOMARINE.COM/ZEUS.

Additional product information and support can be found at www.victronenergy.com.

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