Pyramid 5 KW 3 Phase Guida

An ISO 9001 Certiﬁed Company

THREE PHASE GRID TIED

SOLAR INVERTER

User & Installation Manual for 5 KW 3 Phase Solar

Inverter to be connected to the Utility Grid in India

2021

5KW 3-Phase Grid Tied Solar Inverter 1

Contents

1 Introduction 3

1.1 Overview ........................................... 3

1.2 Factors Aﬀecting The Performance of Inverter .................. 3

1.2.1 Rating for PV modules ............................. 3

1.2.2 Temperature and Power Reduction: ..................... 3

1.2.3 Angle of the Sun .................................. 4

1.2.4 Partial Shade .................................... 4

1.2.5 Other Factors .................................... 4

2 Important Safety Warning 4

2.1 General Precautions ................................... 4

3 Unpacking & Overview 6

3.1 Packing List ......................................... 6

3.2 Product Overview ..................................... 6

4 Installation Procedure 7

4.1 Selection of Mounting Location ............................ 7

4.2 Mounting Solar Inverter on Wall Mounting Bracket ............... 7

5 Grid, PV and Antennas Connection 9

5.1 Grid (AC) Connection .................................. 9

5.1.1 Preparation ..................................... 9

5.1.2 Connection to AC Utility ............................ 9

5.2 Solar (DC) Connection .................................. 12

5.2.1 PV Terminal Connections ............................ 12

5.3 GSM / WiFi Connection ................................ 16

6 Turning the Inverter ON 17

7 Remote Monitoring for Users 17

7.1 Conﬁguring GSM/WiFi Module of Solar Inverter ................. 17

7.2 Remote Monitoring Using Web App ......................... 19

7.3 Remote Monitoring Using Mobile App ....................... 25

8 Maintenance and Cleaning 32

9 Trouble Shooting 33

9.1 Fault Related Information ................................ 33

10 User Interface 34

10.1 Checking Solar Energy Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

10.2SettingUpInverterModes.................................. 36

10.3SettingUpRestartTimer .................................. 37

11 Technical Data 38

Pyramid Electronics

5KW 3-Phase Grid Tied Solar Inverter 2

USER MANUAL

5 KW THREE PHASE

GRID-TIED SOLAR INVERTER

Pyramid Electronics

5KW 3-Phase Grid Tied Solar Inverter 3

1 Introduction

1.1 Overview

This solar inverter is a power conditioning equipment that converts DC solar electric (photovolatic

or PV) power into ac utility-grade electricity that can be sold to local power company. The inverter

performs Maximum Power Point Tracking (MPPT) and extracts out the maximum power possible

from the solar PV string connected at its input.

Figure 1: A typical roof-top solar PV system

This inverter can only be used with a solar PV string (PV modules connected in series) with open

circuit dc voltage less than 1000 V DC. This inverter CANNOT be used with any other regular dc

voltage source. Note that the present inverter uses zero residual current transformerless topology due

to which any sort of PV modules (Mono-crystalline PV, Poly-Crystalline PV, thin ﬁlm PV) can be

connected to the inverter. A typical roof-top solar PV system is shown in Figure 1 on page 3. In

Distribution Box, typically a separate DC circuit breaker is installed between inverter and PV string

and a separate AC circuit breaker is typically installed between inverter and grid utility.

1.2 Factors Aﬀecting The Performance of Inverter

There are a lot of factors that can inﬂuence the performance of this inverter.

1.2.1 Rating for PV modules

PV modules are rated at ideal factory conditions, such as speciﬁed illumination (1000 W/m2), spec-

trum of light and temperature (25 0C/ 77 0F). This is called the STC (Standard Test Condition)

rating and is the ﬁgure that appears on the speciﬁcation label of PV module. Generally speaking,

only around 60% to 70% of its peak STC-rated output will be produced from the PV modules due to

unpredicted environmental factors.

1.2.2 Temperature and Power Reduction:

Environment temperature aﬀects the power output of PV modules. Higher the temperature, lower

the power output of PV module. Comparing the pole-mounted PV array, roof-mounted PV module

array generates less power due to less air circulation and and excessive heat from the roof top.

Pyramid Electronics

5KW 3-Phase Grid Tied Solar Inverter 4

1.2.3 Angle of the Sun

The array orientation can dramatically aﬀect the PV array output. The array energy output will vary

depending on the time of day and time of year as the sun’s angle in relation to the array changes.

Sunlight output decreases as the sun approaches the horizons (such as in winter in Europe) due to

the greater atmospheric air mass it must penetrate, reducing both the light intensity that strikes the

array’s surface and spectrum of the light. In general, one can expect only four to six hours of direct

sunlight per day depending on what part of the world the inverter is installed.

1.2.4 Partial Shade

Shading on a single PV module of the array can reduce the output power. Such shading can be caused

by something as simple as the shadow of a utility wire or tree branch on part of the array’s surface.

The inverter is designed to maximize its power production in all of the above situations using the

sweep method MPPT algorithm.

1.2.5 Other Factors

Other factors that reduce power generation of a solar system are:



Dust or dirt on the modules.



Fog or smog.



Mismatched PV array modules, with slight inconsistencies in performance from one module to

another (A solar PV string consisting of solar panels with diﬀerent power rating or same power

rating but diﬀerent manufacturers is unacceptable).



Inverter eﬃciency.



Wire losses.

2 Important Safety Warning

Before using the inverter, please read all instructions and cautionary markings on the

unit and this manual. Store the manual where it can be accessed easily.

This manual is for qualiﬁed personnel. The task described in this manual may be performed by qual-

iﬁed personnel only.

2.1 General Precautions

Convention Used:

WARNING! Warnings identify conditions or practices that could result in personal injury.

CAUTION! Caution identiﬁes conditions or practices that could result in damaged to the unit

or other equipment connected.

WARNING! Before installing and using this inverter, read all instructions and cautionary markings

on the inverter and all appropriate sections of this guide.

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5KW 3-Phase Grid Tied Solar Inverter 5

WARNING! Normally grounded conductors may be ungrounded and energized when a ground fault

is indicated.

WARNING! This inverter weighs around 16 kgs. It should be installed by at least two persons.

CAUTION! 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 work-

ing 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.

CAUTION! Do not disassemble and dispose oﬀ this inverter yourself. It contains no user-serviceable

parts. Attempt to service this inverter yourself may cause a risk of electrical shock or ﬁre and will

void the warranty from the manufacturer.

CAUTION! To avoid a risk of ﬁre and electric shock, make sure that existing wiring is in good con-

dition and that the wire is not under rated. Do not operate the Inverter with damaged or substandard

wiring.

CAUTION! Use only recommended accessories from installer. Otherwise, not-qualiﬁed tools may

cause a risk of ﬁre, electric shock, or injury to persons.

CAUTION! To reduce risk of ﬁre hazard, do not cover or obstruct the heat sink. When the inverter

is ON, DO NOT touch it as it can be very hot (as high as 1000C) and can cause a serious injury.

CAUTION! 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, please contact the system installer.

Pyramid Electronics

5KW 3-Phase Grid Tied Solar Inverter 6

CAUTION! Make sure that the earth wire of the inverter is properly earthed to reduce the risk of

electric shock.

3 Unpacking & Overview

3.1 Packing List

Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. The

following items must be present inside the package:

3.2 Product Overview

Pyramid Electronics

5KW 3-Phase Grid Tied Solar Inverter 7

4 Installation Procedure

4.1 Selection of Mounting Location

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.



For proper air circulation to dissipate heat, allow a clearance of atleast 20 cm to the side and

atleast 50 cm above and below the unit.



Dusty conditions on the unit may impair the performance of this inverter.



The ambient temperature should be between -25 0Cand 55 0Cto ensure optimal operation.



The recommended installation position is to be adhered to (vertical).



This inverter is designed with IP-65 for outdoor applications with high humidity.

4.2 Mounting Solar Inverter on Wall Mounting Bracket

WARNING!! Remember that this inverter weighs around 16 kg! Please be careful when lifting

out from the package.

Please use the mounting plate provided in packing for problem-free installation of the solar inverter.

Installation of plate on the wall should be implemented with the proper screws. Heat sink mounting

plate has already been mounted on the inverter heat sink, user has to only mount the wall bracket so

that the solar inverter can be easily attached to the wall. After that, check that the inverter should

be bolted on wall securely. Step by step procedure is detailed next:

1. Employ the wall mounting plate as a template for marking the positions of the boreholes on the

wall.

2. Mount the wall mounting plate with appropriate screws (M5,SUS304) into four holes to ﬁx the

mounting plate on the wall.

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5KW 3-Phase Grid Tied Solar Inverter 8

3. Follow the below ﬁgure to place the solar inverter on the wall mount plate and check if the solar

inverter is ﬁrmly ﬁxed onto the mounting plate.

4. After ﬁnal ﬁxing the solar inverter on wall mounting plate, it will look like as shown in the below

ﬁgure.

Note: If two or more solar inverters need to be installed in close proximity, then there

should be a distance of at-least 1 m between any two inverters.

Pyramid Electronics

5KW 3-Phase Grid Tied Solar Inverter 9

5 Grid, PV and Antennas Connection

5.1 Grid (AC) Connection

5.1.1 Preparation

Before connecting to AC utility, please install a separate AC circuit breaker between inverter and AC

utility. This will ensure the inverter can be securely disconnected under load.

Note: Although this inverter is equipped with all types of protection, it’s still necessary to install a

separate circuit breaker for safety consideration. Please use 350 V AC / 16 A circuit breaker for the

present 5 KW Three Phase Grid-Tied Solar Inverter.

Note: If one wants to add RCMU for additional safety, it shall be of type B with 30 mA leakage

current rating and 40 A nominal current rating. This RCMU can be placed between the inverter and

the grid utility.

Warning: It’s very important for system safety and eﬃcient operation to use appropriate cable

for grid connection. To reduce risk of injury, please use the proper recommended cable size as below.

Table 1: Suggested cable requirement for grid side wire (Phase, Neutral and Earth)

Model Conductor Cross-Section

5 KW 3 Phase >= 2mm2

5.1.2 Connection to AC Utility

WARNING!! To prevent risk of electric shock, ensure the earth terminal of the solar inverter is

properly earthed before operating the solar inverter.

Outline size of SP21 series three-phase AC connector



Outline size of SP21 series IP68 connector.

Pyramid Electronics

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