PowMr Hybrid Inverter Charger

About This Manual

Purpose: This manual describes the assembly, installation, operation, and troubleshooting of this unit. Please read this manual carefully before installations and operations. Keep this manual for future reference.

Scope: This manual provides safety and installation guidelines as well as information on tools and wiring.

Safety Instructions

WARNING: This chapter contains important safety and operating instructions. Read and keep this manual for future reference.

1. Before using the unit, read all instructions and cautionary markings on the unit, the batteries, and all appropriate sections of this manual.
2. CAUTION --To reduce risk of injury, charge only deep-cycle lead acid type rechargeable batteries. Other types of batteries may burst, causing personal injury and damage.
3. Do not disassemble the unit. Take it to a qualified service center when service or repair is required. Incorrect re-assembly may result in a risk of electric shock or fire.
4. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning. Turning off the unit will not reduce this risk.
5. CAUTION – Only qualified personnel can install this device with battery.
6. NEVER charge a frozen battery.
7. For optimum operation of this inverter/charger, please follow required spec to select appropriate cable size. It's very important to correctly operate this inverter/charger.
8. Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool to spark or short circuit batteries or other electrical parts and could cause an explosion.
9. Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please refer to INSTALLATION section of this manual for the details.
10. GROUNDING INSTRUCTIONS -This inverter/charger should be connected to a permanent grounded wiring system. Be sure to comply with local requirements and regulation to install this inverter.
11. NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input short circuits.
12. Warning!! Only qualified service persons are able to service this device. If errors still persist after following troubleshooting table, please send this inverter/charger back to local dealer or service center for maintenance.

Introduction

This is a multi-function inverter/charger, combining functions of inverter, MPPT solar charger and battery charger to offer uninterruptible power support with portable size. Its comprehensive large LCD display offers user-configurable and easy-accessible touch button operation such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.

Features

• Pure sine wave solar inverter
• Unique glass top cover design with 6.25inch LCD display and touchable buttons
• Built-in 150A MPPT (Max PV) solar charger
• High PV input range from 55~450V
• Smart battery charger design for optimized battery performance
• Configurable AC/Battery input priority via LCD setting
• Auto restart while PV is recovering
• Over-load, over temperature and output short circuit protection
• Cold restart function
• Built-in lithium battery automatic activation
• Communication with RS232/RS485
• WiFi monitoring function (optional)
• Anti-dust kit for harsh environment (optional)
• Restore default Settings with one click

Basic System Architecture

The following illustration shows basic application for this inverter/charger. It also includes following devices to have a complete running system: Generator or Utility, PV modules (option). Consult with your system integrator for other possible system architectures depending on your requirements.

This inverter can power all kinds of appliances in home or office environment, including motor-type appliances such as tube light, fan, refrigerator and air conditioner.

Diagram Description: A diagram illustrating a hybrid power system. It shows a solar panel (optional) connected to the Hybrid Inverter. The inverter is also connected to a Generator or Utility. The Hybrid Inverter then powers Home Appliances.

Product Overview

Diagram Description: The front and side views of the Hybrid Inverter are shown. The front panel features an LCD display, LED indicators (AC/INV, CHG, FAULT), and function touch buttons (ESC, UP, DOWN, ENTER). A power ON/OFF switch is also visible. The terminal connections are detailed, including AC input, AC output, PV input, Battery input, and RS485/RS232 communication port.

Installation

Unpacking and Inspection

Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have received the following items inside of package:

• The unit x 1
• User manual x 1

Preparation

Before connecting all wirings, please take off the bottom cover by removing two screws.

Mounting the Unit

Consider the following points before selecting where to install:

• Do not mount the inverter on flammable construction materials.
• Mount on a solid surface.
• Install this inverter at eye level in order to allow the LCD display to be read at all times.
• The ambient temperature should be between 0°C and 55°C to ensure optimal operation.
• The recommended installation position is to be adhered to the wall vertically.
• Be sure to keep other objects and surfaces as shown in the diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.

SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.

Diagram Description: A diagram illustrating the recommended mounting clearances for the inverter. It shows a vertical mounting orientation with 50cm clearance recommended above and below, and 20cm clearance on the sides for heat dissipation and wire access.

Battery Connection

CAUTION: For safety operation and regulation compliance, it's requested to install a separate DC over-current protector or disconnect device between battery and inverter. It may not be requested to have a disconnect device in some applications, however, it's still requested to have over-current protection installed. Please refer to typical amperage in below table as required fuse or breaker size.

WARNING! All wiring must be performed by a qualified personnel.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for battery connection. To reduce risk of injury, please use the proper recommended cable and terminal size as below.

Diagram Description: An illustration of a ring terminal, showing its dimensions (D, L, M).

Please follow below steps to implement battery connection:

1. Assemble battery ring terminal based on recommended battery cable and terminal size.
2. Connect all battery packs as units requires.

NOTE: Please only use sealed lead acid battery or sealed GEL/AGM lead-acid battery or lithium battery.

3. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are tightened with torque of 2-3 Nm. Make sure polarity at both the battery and the inverter/charge is correctly connected and ring terminals are tightly screwed to the battery terminals.

Diagram Description: Diagrams showing the correct connection of battery ring terminals to the inverter's battery input terminals, emphasizing polarity (+ to +, - to -).

WARNING: Shock Hazard Installation must be performed with care due to high battery voltage in series.

CAUTION!! Do not place anything between the flat part of the inverter terminal and the ring terminal. Otherwise, overheating may occur.

CAUTION!! Do not apply anti-oxidant substance on the terminals before terminals are connected tightly.

CAUTION!! Before making the final DC connection or closing DC breaker/disconnector, be sure positive (+) must be connected to positive (+) and negative (-) must be connected to negative (-).

AC Input/Output Connection

CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between inverter and AC input power source. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of AC input. The recommended spec of AC breaker is for 32A for 4.5KW, 50A for 6.5KW.

CAUTION!! There are two terminal blocks with “INPUT"and “OUTPUT"markings. Please do NOT mis-connect input and output connectors.

WARNING! All wiring must be performed by a qualified personnel.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for AC input connection. To reduce risk of injury, please use the proper recommended cable size as below.

Please follow below steps to implement AC input/output connection:

1. Before making AC input/output connection, be sure to open DC protector or disconnector first.
2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm.
3. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws.

Diagram Description: An illustration of the inverter's terminal block showing connections for PV, INPUT, OUTPUT, N, and COMM. It also indicates the wiring for L (LINE, brown or white), N (Neutral, blue or black), and Ground (yellow-green).

4. Then, insert AC output wires according to polarities indicated on terminal block and tighten terminal screws. Besure to connect PE protective conductor first.

Diagram Description: An illustration of the AC output terminal block, showing the correct wiring for L (LINE), N (Neutral), and PE (Ground).

5. Make sure the wires are securely connected.

CAUTION: Important Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause utility short-circuited when these inverters are worked in parallel operation.

CAUTION: Appliances such as air conditioner are required at least 2~3 minutes to restart because it's required to have enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and recovers in a short time, it will cause damage to your connected appliances. To prevent this kind of damage, please check manufacturer of air conditioner if it's equipped with time-delay function before installation. Otherwise, this inverter/charger will trig overload fault and cut off output to protect your appliance but sometimes it still causes internal damage to the air conditioner.

PV Connection

CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter and PV modules.

WARNING! All wiring must be performed by a qualified personnel.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for PV module connection. To reduce risk of injury, please use the proper recommended cable size as below.

Please follow below steps to implement PV module connection:

1. Remove insulation sleeve 10 mm for positive and negative conductors.
2. Check correct polarity of connection cable from PV modules and PV input connectors. Then, connect positive pole (+) of connection cable to positive pole (+) of PV input connector. Connect negative pole (-) of connection cable to negative pole (-) of PV input connector.

Diagram Description: An illustration of the PV input terminal block on the inverter, showing the correct polarity connection for PV cables (+ to +, - to -). It also shows a detail of the wire preparation (10mm insulation removal, 3mm conductor shortening).

3. Make sure the wires are securely connected.

Final Assembly

After connecting all wirings, please put bottom cover back by screwing two screws as shown below.

Diagram Description: An illustration showing the final step of assembly, which involves replacing the bottom cover of the inverter and securing it with screws.

Operation

Power ON/OFF

Once the unit has been properly installed and the batteries are connected well, simply press the On/Off switch (located on the button of the case) to turn on the unit.

Operation and Display Panel

The operation and display panel, shown in the chart below, is on the front panel of the inverter. It includes three indicators, four function keys, and a LCD display, indicating the operating status and input/output power information.

Diagram Description: An illustration of the inverter's front panel, highlighting the LCD display, LED indicators (AC/INV, CHG, FAULT), and function keys (ESC, UP, DOWN, ENTER).

LCD Display Icons

Diagram Description: A detailed illustration of the inverter's LCD display, showing various icons and their meanings.

Load Information

Diagram Description: Icons and text explaining load information, including overload status and load level percentages (0-24%, 25-50%, 50-75%, 75-100%).

Mode Operation Information

Diagram Description: Icons representing different operating modes: unit connects to mains, unit connects to PV panel, load is supplied by utility power, utility charger circuit is working, DC/AC inverter circuit is working.

Mute Operation

Diagram Description: An icon indicating that the unit alarm is disabled.

LCD Setting

After pressing and holding ENTER button for 3 seconds, the unit will enter setting mode. Press "UP" or "DOWN" button to select setting programs. And then, press “ENTER” button to confirm the selection or ESC button to exit.

Display Setting

The LCD display information will be switched in turns by pressing "UP" or "DOWN" key. The selectable information is switched as below order: input voltage, input frequency, PV voltage, MPPT charging current, MPPT charging power, battery voltage, output voltage, output frequency, load percentage, load in VA, load in Watt, DC discharging current, main CPU Version.

Operating Mode Description

SBU mode:

In the "SBU" mode, when the solar energy is not available, the battery will complement the utility to supply the load together. With the change of the battery voltage, the Energy Rubik's Cube will intelligently adjust the discharge current of the battery. To activate the Energy Rubik's Cube, the first setting has to be "SBU", and then set the battery voltage point back to utility source of 13th setting according to the characteristics of the battery.

When the solar energy is not available, AC output source will be intelligently adjusted according to the below chart.

Diagram Description: A chart showing Battery Discharge Current versus Battery Voltage. The chart illustrates how the inverter adjusts AC output source based on battery voltage and program settings when solar energy is unavailable.

Battery Equalization Description

Equalization function is added into charge controller. It reverses the buildup of negative chemical effects like stratification, a condition where acid concentration is greater at the bottom of the battery than at the top. Equalization also helps to remove sulfate crystals that might have built up on the plates. If left unchecked, this condition, called sulfation, will reduce the overall capacity of the battery. Therefore, it's recommended to equalize battery periodically.

How to Apply Equalization Function

You must enable battery equalization function in monitoring LCD setting program 33 first. Then, you may apply this function in device by either one of following methods:

1. Setting equalization interval in program 37.
2. Active equalization immediately in program 39.

When to Equalize

In float stage, when the setting equalization interval (battery equalization cycle) is arrived, or equalization is active immediately, the controller will start to enter Equalize stage.

Diagram Description: A graph illustrating battery charging stages (BULK, ABSORPTION, FLOAT, EQUALIZE) and their corresponding voltage levels over time.

Equalize charging time and timeout

In Equalize stage, the controller will supply power to charge battery as much as possible until battery voltage raises to battery equalization voltage. Then, constant-voltage regulation is applied to maintain battery voltage at the battery equalization voltage. The battery will remain in the Equalize stage until setting battery equalized time is arrived.

Diagram Description: A graph illustrating battery charging stages, showing Equalize Voltage, Absorption Voltage, Float Voltage, and Equalize Charging Time.

Fault Reference Code

Warning Indicator

Specifications

Table 1 Line Mode Specifications

Diagram Description: A graph showing Output Power versus Input Voltage for a 230Vac model, illustrating how output power derates as input voltage drops below certain thresholds (e.g., 90V, 200V).

Table 2 Inverter Mode Specifications

Table 3 Charge Mode Specifications

Utility Charging Mode

Diagram Description: A charging curve graph showing Battery Voltage and Charging Current over Time, illustrating the 3-Step charging algorithm (Bulk, Absorption, Maintenance/Floating).

Solar Charging Mode

Table 4 General Specifications

Trouble Shooting

Appendix: Approximate Back-up Time Table

Note: Backup time depends on the quality of the battery, age of battery and type of battery. Specifications of batteries may vary depending on different manufacturers.

* Product technical specifications are subject to change without notice.

4.5KW Model

6.5KW Model

Manufacturer Information

Shenzhen Hehejin Industrial Co., Ltd

Tel/Fax: +86755-28219903

Email: Support@powmr.com

Web: www.powmr.com

Add: Henggang Street, Longgang District, Shenzhen, Guangdong, China