Victron Energy Vehicle Electrical System Wiring Diagram

System Overview

This document details a comprehensive wiring diagram for a vehicle's electrical system, integrating components for power generation, storage, management, and auxiliary functions. The system is designed around a 24V DC architecture, utilizing Victron Energy products for solar charging, battery monitoring, and inverter/charging capabilities, alongside a Webasto heater and other essential components.

Power Sources

The system draws power from two primary sources:

Alternator: Connected to the vehicle's starter batteries (12V) via an 80A fuse. This is the primary charging source for the starter system.
Solar Photovoltaic (PV): Solar panels connect to the BlueSolar MPPT 75/10 charge controller. The MPPT controller efficiently manages the solar energy input to charge the auxiliary battery bank.

Energy Storage

The system utilizes two distinct battery banks:

Starter Batteries (12V): Two 12V batteries are used to start the vehicle's engine.
Auxiliary Battery Bank (24V): This bank consists of two 12V 240Ah AGM batteries connected in series to create a 24V, 480Ah capacity bank. This bank powers the main DC loads and the inverter.

Power Management and Control Components

Key components manage and distribute power throughout the system:

TS-1600 (24/24V): A 24V DC-DC converter connected to the starter batteries, likely used to provide a stable 24V supply or for specific voltage requirements within the 24V system.
BlueSolar MPPT 75/10: Manages solar input to charge the auxiliary 24V battery bank. It connects to the battery bank via a VE.Direct interface.
BMV700: A sophisticated battery monitor that connects to the auxiliary 24V battery bank via a shunt. It provides detailed real-time data on battery status (voltage, current, state of charge) and communicates this information to the Cerbo GX via VE.Direct.
Cerbo GX: The central control and monitoring hub. It interfaces with the MultiPlus via VE.Bus, the BMV700 via VE.Direct, and potentially other devices via VE.Can. It allows for comprehensive system oversight and management.
MultiPlus 24/3000/70-16: A powerful 24V inverter/charger. It converts DC power from the auxiliary battery bank into 230VAC for AC loads. It also charges the battery bank from an AC input source (e.g., shore power). It is protected by a 300A fuse and connects to the Cerbo GX.
Isolation Protector TE-IMD2: Installed on the AC output of the MultiPlus, this device monitors for AC insulation faults, enhancing safety.
Webasto Heater: An auxiliary heating system controlled by a dedicated "Heater Control" unit via a "Heater On/Off Control Wire".
230VAC Relay: A relay with a 1.5-hour delay-off function, likely used to control specific AC loads or manage power sequencing.

Auxiliary Loads

The 24V system powers various auxiliary loads:

+24VDC Signal Lighting
+24VDC Hydraulic Pump

Component Setup Details

BMV700 Setup

Setting	Value
Battery Capacity	240 Ah
Invert Relay	ON
SOC Relay (Discharge floor)	50%
Clear SOC Relay	60%

MultiPlus 24/3000/70-16 Setup

Charger Settings

Absorption Voltage: 28.80 V (default)
Float Voltage: 27.60 V (default)
Storage Mode: ON (default)
Charge Current: 52A (default)
Temperature Sensor: Installed

Inverter Settings

Ground Relay: OFF

TS-1600 Setup

Load Settings: 24-24V default settings
Output voltage: 28.8 V (out)

VE AGM Battery Setup

Important Note: Fully charge the individual batteries before placing the batteries in the battery bank.

Cerbo GX Setup

Battery monitor: BMV700 on VE.Direct

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