Huawei SUN2000-20KTL-M3 Manuale utente

HUAWEI TECHNOLOGIES CO., LTD.

SUN2000-(20KTL-M3, 33KTL-NH, 40KTL-NH)

Quick Guide

Issue: 05

Part Number: 31500HLN

Date: 2022-05-17

1Overview

rights reserved.

•The information in this document is subject to change without notice. Every effort has been

made in the preparation of this document to ensure accuracy of the contents, but all

statements, information, and recommendations in this document do not constitute a warranty

of any kind, express or implied.

•Only qualified and trained electrical technicians are allowed to operate the device. Operation

personnel should understand the composition and working principles of the grid-tied PV power

system and local regulations.

•Before installing the device, read the user manual carefully to get familiar with product

information and safety precautions. Huawei shall not be liable for any consequences caused by

the violation of the storage, transportation, installation, and operation regulations specified in

this document and the user manual.

•Use insulated tools when installing the device. For personal safety, wear proper personal

protective equipment (PPE).

(1) LED indicators

(2) Host panel

(3) Heat sink

) Screw holes for fixing the awning

(5) Communications port (COM)

(6) Hole for the DC switch locking screw

(7) DC

switch

(8) Smart Dongle

porta

(9) Ventilation valves

(10) DC input terminals (PV1

–PV8)

(11) AC output port

(12)

Spot-check terminal connection box

(13) Ground point

Note a:

The SUN2000MA V100R001C20SPC109 and later versions support the Smart Dongle

networking only in the sub

-50 kW scenario, and do not support power control at the grid-

connection

point.

2Installation Requirements

Dimensions

Angle Space

3Installing a Solar Inverter

•M12x40 bolt assemblies are supplied with the solar inverter. If the bolt length does not meet

the installation requirements, prepare M12 bolt assemblies by yourself and use them

together with the supplied M12 nuts.

•This quick guide describes how to install a solar inverter on a support. For details about wall-

mounted installation, see the user manual.

•Before installing the mounting bracket, remove the security Torx wrench and set it aside.

Position for binding

the security Torx

wrench

1. Install the mounting bracket.

Moving the Solar Inverter

It is recommended that anti-rust measures be taken on the positions for drilling holes.

2. Install the solar inverter onto the

mounting bracket.

3. Tighten the security Torx screws on both

sides.

Secure the screws on the sides before connecting cables.

Preparations

4.1

4Connecting Cables

•Connect cables in accordance with local installation laws and regulations.

•The cable specifications must comply with local standards.

•Before connecting cables, ensure that the DC switch of the solar inverter and all the switches

connected to it are set to OFF. Otherwise, the high voltage produced by the solar inverter

may cause electric shocks.

No.

Cable

Type

Specifications

PE cable

Single

-core outdoor copper-

core cable

Conductor cross

-sectional area ≥ 5.5 mm2

AC output power

cable

Outdoor copper

core/aluminum

-core cable

•

Conductor cross-sectional area: 16-50

mm2outdoor copper-core cable or 35-

50 mm2outdoor aluminum-core cable

•

Cable outer diameter: 16–38 mm

DC input power

cable

Common outdoor PV cable in

the industry (recommended

model: PV1

-F)

•

Conductor cross-sectional area: 3.5–6

mm2

•

Cable outer diameter: 5.5–9 mm

(Optional) RS485

communications

cable

Two

-core outdoor shielded

twisted

pair

•

Conductor cross-sectional area: 0.2–1

mm2

•

Cable outer diameter: 4–11 mm

Connecting a PE Cable

4.2

•The PE point at the AC output port is used

only as a PE equipotential point, not a

substitute for the PE point on the

enclosure.

•It is recommended that silica gel or paint

be applied around the ground terminal

after the PE cable is connected.

Do not connect the neutral wire to the

enclosure as a PE cable. Otherwise, electric

shocks may occur.

Reserved PE point

Installing the AC Output Power Cable

4.3

•Use a socket wrench and extension rod to connect the AC power cable. The extension rod

must be longer than 100 mm.

•Do not install third-party devices in the AC connection box.

•You need to prepare M8 OT terminals by yourself.

1. Remove the AC terminal box and install partition boards.

2. Connect the AC output power cable (using a four-core cable as an example).

•To avoid damaging the rubber liner, do not route a cable with a crimped OT terminal directly

through it.

•The cable colors in figures are for reference only. Select appropriate cables according to the

local standards.

Installing DC Input Power Cables

4.4

1. Use the positive and negative Amphenol Helios H4 metal terminals and DC connectors

supplied with the solar inverter. Using incompatible positive and negative metal terminals

and DC connectors may result in serious consequences. The caused device damage is not

covered under any warranty.

2. For models of the crimping tool and removal wrench, use the recommended model or

contact your Amphenol dealer.

3. Ensure that the PV module output is well insulated to ground.

4. The DC input voltage of the SUN2000-20KTL-M3 shall not exceed 750V DC under any

circumstance.

5. Before installing DC input power cables, label the cable polarities to ensure correct cable

connections.

6. If a DC input power cable is reversely connected and the DC switch is turned on, do not

operate on the DC switch or the positive/negative connectors immediately. Otherwise, the

device may be damaged. The caused device damage is not covered under any warranty. Wait

until the night when solar irradiance declines and the PV string current drops to below 0.5 A.

Then set the DC switch to the OFF position, remove the positive and negative connectors, and

correct the polarity of the DC input power cable.

1. Connect the DC power cables.

Positive connector

Negative

connector

Positive metal

terminal

Negative metal

terminal

Ensure that the cable

cannot be pulled out

after being crimped.

Click

Ensure that cables

are connected

correctly and that

the voltage does not

exceed 750 V DC.

Use the wrench shown

in the figure to tighten

the locking nut. When

the wrench slips

during the

tightening,

the locking

nut has been

tightened.

(Optional) Installing the Smart Dongle

4.5

•The Smart Dongle is not provided in standard configuration.

•If your Smart Dongle is not equipped with a SIM card, prepare a standard SIM card (size: 25

mm x 15 mm) with the capacity greater than or equal to 64 KB.

•When installing the SIM card, determine its installation direction based on the silk screen

and arrow on the card slot.

•Press the SIM card in place to lock it, indicating that the SIM card is correctly installed.

•When removing the SIM card, push it inwards to eject it.

•For details about how to operate the 4G Smart Dongle SDongleA-03, see

SDongleA-03

Quick Guide (4G)

•The quick guide is delivered with the Smart Dongle or can be obtained by scanning the QR

codes.

Smart Dongle port (4G/WLAN-FE)

Quick Guide

H4TC0003 (Amphenol)

H4TW0001

(Amphenol)

Installing the Signal Cable

4.6

•When laying out the signal cable, separate it from the power cable and keep it away from

strong interference sources to avoid strong communication interference.

•Ensure that the protective layer of the cable is inside the connector, that excess core wires

are cut off from the protection layer, that the exposed core wire is totally inserted into the

cable hole, and that the cable is connected securely.

COM Port Pin Definitions

When reinstalling the cover of the Smart Dongle,

ensure that the buckle springs back in place.

Scenarios Where No Signal Cable Is Connected

If no signal cable is required for the SUN2000, use waterproof plugs to block the wiring holes on

the signal cable connector and connect the signal cable connector to the communications port

on the SUN2000 to improve the waterproof performance of the SUN2000.

No.

Definition

Function

Description

No.

Definition

Function

Description

485A1

-1

RS485

differential

signal +

Used to cascade

inverters or

connect to the

SmartLogger

485A1

-2

RS485

differential

signal +

Used to

cascade

inverters or

connect to the

SmartLogger

485B1

-1

RS485

differential

signal

–

485B1

-2

RS485

differential

signal

–

Ground point

on the shield

layer

–

Ground point

on the shield

layer

–

485A2

RS485

differential

signal +

Reserved.

Connects to the

RS485 signal

port on the

power grid

scheduling

power meter.

DIN1

Reserved

–

485B2

RS485

differential

signal

–

DIN2

–

DIN3

GND

–

DIN4

DIN5

Reserved

–

GND

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