Wattsonic Gen3 Hybrid Inverter Quick Installation Guide

A Check Packing List

• Inverter: 1 piece
• Wall-mounting bracket: 1 piece
• M5 screws: 1 piece
• Expansion plug set: 5 pieces
• On-grid connector set (Red): 1 piece
• Back-up connector set (Black): 1 piece
• PV Terminal (4.0K-25A-3P or 10K-40A-3P): 2 pairs or 4 pairs
• Battery terminal: 1 pair
• Meter with 3 CTs: 1 pair
• Monitoring device: 1 piece
• 10m meter communication cable: 1 piece
• 3m battery communication cable: 1 piece
• PE terminal: 1 piece
• COM2 connector set: 1 piece
• User Manual: 1 copy
• User guide: 3 copies

B Installation Location

Select an installation location that meets the following requirements:

• Ensure adequate ventilation.
• Avoid direct sunlight and rain.
• Keep away from flammable or explosive materials.
• Ensure the mounting surface is strong and stable.

C Installation Space

Maintain sufficient clearance around the inverter for installation and maintenance. Recommended clearances are:

• Top: 500mm
• Bottom: 300mm
• Left: 300mm
• Right: 500mm

[Diagram showing recommended clearances around the inverter]

D Installation Angle

[Diagram illustrating the recommended mounting angle for the inverter on a wall. The diagram shows the inverter mounted vertically.]

E Mark the position and drill holes

Use the wall-mounting bracket as a template to mark the drilling positions on the wall. Drill holes at the marked positions.

[Diagram showing a person marking holes on a wall using the bracket as a guide.]

F Fix wall bracket

Insert expansion plugs into the drilled holes. Securely attach the wall-mounting bracket to the wall using screws.

[Diagram showing expansion plugs being inserted into wall holes and the bracket being screwed into place.]

G Mounting inverter

Lift the inverter and hook it onto the wall-mounting bracket. Ensure it is securely seated.

[Diagram showing the inverter being lifted and attached to the mounted wall bracket.]

H Grounding terminal connection

Connect the grounding terminal (PE) of the inverter to a reliable earth ground using the provided PE terminal and appropriate grounding cable.

[Diagram showing the PE terminal on the inverter connected to a grounding wire.]

A Cable Requirements

Use cables that meet the specified requirements for safe and reliable operation.

Note on Connectors:

• AC Connector: Distinguish between the on-grid (Red) and back-up (Black) connectors.
• Battery power cable: If the conductor core is too small, it may cause poor contact. Use the specified cable sizes or contact Wattsonic for alternative terminals.

B Electrical wiring diagram

The diagram illustrates the general wiring configuration. Ensure all connections are made according to local electrical codes and safety standards.

[Diagram showing the interconnection of PV Modules, AC Breakers, Loads (1-Phase and 3-Phase), Utility Grid, and the Wattsonic Smart Meter with CTs. The diagram shows the flow of power from PV to loads and grid, and the measurement points for the meter.]

• PV Modules connect to the inverter via AC Breakers.
• The inverter connects to 1-Phase and 3-Phase Loads via AC Breakers.
• The Utility Grid connects to the inverter via an AC Breaker.
• A Wattsonic Smart Meter with CT-1, CT-2, and CT-3 is connected to monitor power flow to/from the Utility Grid.
• PE (Ground) and N (Neutral) connections are shown.

C AC Connection

Connect the AC cables to the appropriate connectors. Ensure the connectors are properly seated and secured. The diagram shows a specific connection point with dimensions indicated as 8mm and 50mm, likely referring to cable entry or connector size.

[Diagram showing the AC connection process, possibly illustrating how to prepare and insert the AC cable into the connector, with dimensions 8mm and 50mm indicated.]

D Monitoring Device Installation

Connect the monitoring device to the inverter using the provided communication cable. Follow the specific connection points indicated in the diagram.

[Diagram showing the monitoring device being connected to the inverter, possibly via an RJ45 port.]

E Meter and CT connection

Connect the Wattsonic Smart Meter and its Current Transformers (CTs). Ensure the direction of the arrow on each CT is consistent with the direction of power flow (typically towards the inverter or load). The diagram shows CT-1, CT-2, and CT-3 connected to the meter. S1 (Red) and S2 (Yellow) connections are indicated for the CTs.

[Diagram illustrating the connection of the Wattsonic Smart Meter and its three CTs. The CTs are shown clamped around the main power lines, with directional arrows. Terminal connections S1 (Red) and S2 (Yellow) are shown for the CTs, and the meter is connected to the grid and house lines.]

Meter terminals definition

The following table defines the terminals on the meter:

F Communication Connection

Connect communication cables for the meter and BMS (Battery Management System) to the appropriate ports on the inverter or monitoring device. The diagram shows RJ45 connectors for RS485 and CAN communication.

The diagram also shows the use of terminating resistors for CAN and RS485 connections.

[Diagram showing the connection of communication cables, including RJ45 connectors for RS485 and CAN. It also shows the placement of terminating resistors for CAN and RS485.]

Connect other cables

Connect any remaining cables according to the diagrams. Pay attention to wire diameter and cross-sectional area requirements.

Wire Diameter: 4-6.5mm

Cross-sectional Area: 0.5-1.5mm²

[Diagram showing the connection of other cables, possibly communication or control wires, with specified wire diameter and cross-sectional area.]

Installing the COM Connector

Follow the steps shown in the diagram to install the COM connector. This involves preparing the cable and inserting it into the connector until it clicks.

[Diagram showing the process of installing a COM connector, including cable preparation and insertion.]

G PV string connection

Connect the PV strings to the inverter's PV input terminals. Ensure the polarity (+ and -) is correct. The maximum PV input voltage is 950V without a battery, or 850V with a battery. Exceeding these limits may cause the inverter to wait or malfunction.

[Diagram showing PV cables being connected to the inverter's PV input terminals, with '+' and '-' clearly marked. Dimensions of 7mm are indicated, likely for cable stripping or connector size.]

H Power cable of the battery connection

Connect the battery power cables to the inverter's battery terminals. Ensure correct polarity (+ and -). Tighten the terminals to the specified torque of 2.5 ± 0.1 N.m.

[Diagram showing the battery power cables being connected to the inverter's battery terminals, with '+' and '-' clearly marked. A torque wrench symbol or value (2.5 ± 0.1 N.m) is shown, along with a dimension of 10mm.]