Victron VM-3P75CT Energy Meter Manual & Service Guide PDF (EN)

Table of Contents

Victron VM-3P75CT Energy Meter Manual Table of Contents 1. Safety Instructions ................................................................................................................... 1 2. Introduction ........................................................................................................................... 2 2.1. Features ...................................................................................................................... 2 2.2. What's in the box? ........................................................................................................... 3 3.

Installation ............................................................................................................................. 4 3.1. Installing and wiring the split-core current transformers ................................................................ 4 3.2. Power wiring and overcurrent protection ................................................................................. 5 3.3. Wiring examples by application ............................................................................................ 6 3.4. Ethernet and VE.Can wiring ................................................................................................ 7 4.

Configuration & Monitoring ........................................................................................................ 8 4.1. LED codes .................................................................................................................. 10 5. Firmware Updates .................................................................................................................. 11 6. Restart and reset to factory defaults ........................................................................................... 12 7. Troubleshooting .................................................................................................................... 13 7.1.

The LED alternates between green and red blinking (bootloader mode) ........................................... 13 7.2. Error codes ................................................................................................................. 13 7.3. FAQ ......................................................................................................................... 13 7.3.1. The current value seems abnormally high for the displayed power ....................................... 13 7.3.2. The firmware update via the Ethernet connection failed .................................................... 14 8.

Technical data ...................................................................................................................... 15 8.1. Technical specifications ................................................................................................... 15 8.2. Enclosure dimensions .................................................................................................... 16

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1. Safety Instructions

Victron VM-3P75CT Energy Meter Manual 1. Safety Instructions General Please read the safety instructions below before installing and using the VM-3P75CT energy meter to avoid risks of fire, electric shocks, personal injuries or equipment damage. This product is designed and tested in accordance with international standards. The equipment should be used for its designated application only and in accordance with the specified operating parameters. Installation Installation, maintenance, service and adjustments must be made by qualified personnel only.

To reduce the risk of electric shock, do not perform any service other than that specified in the operating instructions unless you are qualified. For electrical work, follow the local national wiring standards, regulations and these installation instructions. Connection to the mains supply must be in accordance with the national regulations for electrical installations. Never install near fire sources, explosive materials, combustibles or other flammable sources. Never use it at places where gas or other chemical explosions could occur. Turn off mains power before installing or performing operations on it. Do not put fingers or insert objects or sharp metallic objects into the terminals.

Install it in a dry environment. Do not apply strong force on the equipment to prevent crashes and deterioration. It is not allowed to use the current clamps on bare wires. Make sure the ground connection is properly done to prevent equipment damage. Operation, service and maintenance Do not use the device if it shows any signs of damage or does not function properly. Do not use the VM-3P75CT if it is broken, defective, cracked, damaged, or malfunctioning. The VM-3P75CT contains no serviceable parts. If a current transformer is defective, it must be replaced by qualified personnel. Regular maintenance of the VM-3P75CT is not required.

Avoid moisture, oil/soot/vapours, and keep the device clean. Clean using a dry cloth on the front side of the VM-3P75CT. Page 1 Safety Instructions

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2.1. Features

Victron VM-3P75CT Energy Meter Manual 2. Introduction The Victron VM-3P75CT energy meter is a standard device to measure the power and energy of single-, split- and three-phase applications and calculates each phase's power values and broadcasts this over VE.Can or Ethernet with a high rate. It has built-in Ethernet and VE.Can ports for connecting to a GX device and the split-core current transformers enable easy and quick installation without modifying existing wiring. The energy meter works out of the box (the firmware may need to be updated; details can be found in the Firmware Updates [11] chapter) as a grid meter for systems with a MultiPlus and Quattro.

Configuration (via VictronConnect) is only required for changing the role and manual IP configuration rather than the default DHCP. Its data is displayed on a GX device such as the Cerbo GX or Ekrano GX , as well as in VictronConnect and our VRM Portal . 2.1. Features Capable of measuring up to 80 A rms (Amps root mean square) per phase (but rated at 75 A) Modbus/UDP communication over Ethernet Split-core current transformers for easy installation without altering existing wiring Support for split-phase configuration Configurable total energy registration: vector, arithmetic, or absolute Reports:

line-to-neutral voltage line-to-line voltage power factor (according to IEEE convention) phase sequence (for 3-phase configuration) phase rotation warning (for 3-phase configuration) protective earth voltages Status LED can be set as a pulse counter for quick, at-a-glance diagnostics neutral and line currents The VM-3P75CT can be configured for various roles in a GX device, such as the Cerbo GX or the Ekrano GX . Depending on the application, it can be used:

as a grid meter, providing control input for an Energy Storage System (ESS) to measure the output of a PV inverter to measure the output of an AC genset as an AC meter to measure a dedicated AC load circuit to track an EV charger to track a heat pump It offers two options for connection to a GX device: 1. A wired Ethernet connection to the local network via the built-in Ethernet port, allowing the GX device to communicate with it. 2. A wired VE.Can connection via the onboard VE.Can port, directly linking it to the GX device. Page 2 Introduction

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2.2. What's in the box?

Victron VM-3P75CT Energy Meter Manual 2.2. What's in the box? Page 3 Introduction Victron VM-3P75CT with 3 input terminal blocks 3x Split-core current transformer, wired ready for connection Wire length: 640mm (25.3in) VE.Can terminators (2 pcs)

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