Vertex 2K, 3K User Manual

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User MANUAL

Vertex Solar Inverter 3KW

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Table of Contents

1. SCOPE OF DELIVERY 3

2. IMPORTANT SAFETY INSTRUCTIONS 3

3. INTRODUCTION 4

4. EQUIPMENT OVERVIEW 8

5. INSTALLATION 9

6. COMMISSIONING 11

7. MONITORING THE INVERTER 12

8. MAINTENANCE & CLEANING 19

9. WARNING SITUATION 19

10. SPECIFICATIONS 20

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1. Scope of delivery

The manual provides safety guidelines, detailed planning and setup information. It provides
procedures for installing the inverter and information about operation and troubleshooting of the
unit. This manual does not contain details about photovoltaic (PV) panels. Please consult with
system integrator for the information.

2. Important Safety Instructions

SAVE THESE INSTRUCTIONS — this user manual contains important instructions that shall be
followed during the installation and maintenance of the Vertex Solar Inverters.

The following warnings identify conditions or practices that could result in personal injury or loss
of life.

1) Before installing and using the Solar Inverter, read all instructions and cautionary markings
on the inverter and all appropriate sections of this guide.

2) To reduce risk of fire hazard, do not cover or obstruct the inverter.

3) Under some conditions, the surface of Inverter case could be hot enough to cause skin burns
if accidentally touched. Ensure that the Inverter is located away from normal traffic areas.

4) Use only accessories recommended or sold by the installer. Otherwise, not-qualified tool may
result in a risk of fire, electric shock, or injury to persons.

5) To avoid a risk of fire and electric shock, make sure that existing wiring is in good condition
and the wire is not undersized. Do not operate the Inverter with damaged or substandard
wiring.

6) Do not operate the Inverter if it has received a sharp blow, been dropped, or otherwise
damaged in any way. If the Inverter is damaged, call for an RMA (Return Material
Authorization)

7) Do not disassemble the Solar Inverter. It contains no user-serviceable parts. Attempting to
service the Solar Inverter yourself may result in a risk of electrical shock or fire and will void
warranty from manufacturer.

8) Authorized service personnel should reduce the risk of electrical shock by disconnecting both
the AC and DC power from the Inverter before attempting any maintenance or cleaning or
working on any circuits connected to the inverter. Turning off controls will not reduce this
risk. Internal capacitors can remain charged for 5 minutes after disconnecting all sources of
power.

9) Normally grounded conductors may be ungrounded and energized when a ground fault is
indicated.

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3. Introduction

Vertex Solar inverter is a off grid PV inverter which consists of three power generation sources
such as PV modules, battery power, and AC power sources. The AC power source could be
generator or utility grid. The configuration is illustrated in Figure 1. When the sun is shining for
PV modules and battery is fully charged, connected loads will be powered by PV modules and
battery. When there is insufficient solar power, the inverter will switch to AC power as major
power source and PV module will charge the battery first.

Figure 1

Working Operations

This device has two working states: no output generation state and output generation state. If
you don’t need to have connected loads powered, you may press ON button of the inverter to
switch to “No output generation” state. If it’s necessary to power connected loads, you may press
OFF button to switch to “Output generation” state. There are four operation modes.

1) Standby mode with PV charging (refer to Figure 2)

Figure 2
The inverter will work in this mode under below conditions:
 When there is no output generation and PV power is available, PV power will charge the

battery and MPPT is functioning at the same time.

 When the inverter is in output generation state with battery voltage below 42Vdc and PV

source is available, the inverter also works in this mode.

2) Standby mode with AC charging (refer to Figure 3)

Figure 3

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The inverter will work in this mode when there is no output generation, and PV power source and
PV power source are available.

When the working status change from no output generation to output generation:

 If the battery voltage is higher than 46Vdc, the inverter will switch to inverter mode.

 If the battery voltage is lower than 46Vdc, and AC power source and PV energy are available,

the inverter will switch to bypass mode with PV charging.

 If the battery voltage is lower than 46Vdc with only AC power source available, the inverter

will switch to bypass mode with AC charging.

3) Inverter mode (refer to Figure 4)

Figure 4

When inverter work in this mode. If PV energy is more than required energy for the load, the
inverter will generate power to the connected load and charge the battery simultaneously. If PV
power is insufficient to support connected loads, both PV power and battery will support the load.
If no PV power exists, the inverter will switch to battery independently to support the load. When

the battery voltage drops to 42Vdc, the inverter will switch to bypass mode with PV charging
when PV energy and AC power source are available, or switch to bypass mode with AC charging
while only AC power is available. Or the inverter will switch to standby mode when PV energy and
AC power source are not available. The inverter will go back inverter working mode when the
battery voltage is turning back to 50Vdc.

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4) Bypass mode with PV charging (refer to Figure 5)

Figure 5

When inverter work in this mode. AC power source will power connected load and PV energy will
charge the battery in this mode. This operation will be continued until battery voltage is higher

than 50Vdc, and then inverter will automatically transfer to inverter mode.

5) Bypass mode with AC charging (refer to Figure 6)

Figure 6

When inverter work in this mode. AC power source will support the load and charge the battery
at the same time. This operation will be continued until battery voltage is higher than 50Vdc and
then inverter will transfer to inverter mode automatically.

Note: The vertex solar inverter can be setup as a grid-tie solar inverter. Please contact with
supplier for more detailed information.

PV Compatibility

This inverter is designed to generate continuous power from three different power sources: PV
solar modules (solar panels), battery, and AC power source. When MPP input voltage of PV
modules is within 150 VDC to 500 VDC, this inverter is able to generate power to the load or
charge battery. This inverter is compatible with PV module types of single crystalline and poly
crystalline.

Note: When PV input voltage is lower than 250V, the PV input power of inverter will de-rate.