SUN2000-(50KTL-JPM0, 50KTL-JPM1, 63KTL-JPM0) Quick Guide

NOTICE

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.

• Before installing the device, carefully read the user manual to get familiar with product information and precautions.
• Only qualified and trained electrical technicians are allowed to operate the device. Operators should understand the components and functioning of a grid-tied PV power system, and they should be familiar with relevant local standards.
• Before installing the device, check that package contents are intact and complete against the packing list. If any damage is found or any component is missing, contact the dealer.
• Use insulated tools when installing the device. For personal safety, wear proper personal protective equipment (PPE).
• Huawei shall not be liable for any consequence caused by violation of the storage, moving, installation, and operation regulations specified in this document and the user manual.

1 Product Overview

Front View

(1) PV connection indicator

(2) Grid-tied indicator

(3) Communication indicator

(4) Alarm/Maintenance indicator

(5) Maintenance compartment door

(6) Host panel cover

Indicator Description

Ports

The diagram shows the ports on the SUN2000 unit. The ports are numbered 1 through 8.

(1) Cable gland (COM1, COM2, and COM3)

(2) DC switch 1 (DC SWITCH 1)

(3) DC input terminals (controlled by DC SWITCH 1)

(4) DC input terminals (controlled by DC SWITCH 2)

(5) DC switch 2 (DC SWITCH 2)

(6) Cable gland (AC OUTPUT)

(7) Cable gland (RESERVE)

(8) USB port (USB)

SUN2000 Dimensions

The dimensions of the SUN2000 unit are approximately 1075 mm x 555 mm x 300 mm.

Mounting Bracket Dimensions

The mounting bracket has dimensions of approximately 890 mm in width, with specific hole placements indicated for mounting.

2 Installation Requirements

2.1 Installation Angle

The device should be installed at an angle not exceeding 15 degrees.

2.2 Installation Space

Maintain a minimum clearance of 300 mm around the device. Specifically, a clearance of at least 1000 mm is required above the device, and at least 200 mm below the device. For ease of installation and maintenance, it is recommended that the bottom clearance be between 300 mm and 730 mm.

3 Installing the SUN2000

NOTE:

• The SUN2000 mounting bracket has four groups of tapped holes. Mark any hole in each group based on site requirements and mark four holes in total. Two round holes are preferred.
• M12x40 bolt assemblies are supplied with the SUN2000. 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.
• The following describes how to install the SUN2000 by using support installation as an example. For details about wall-mounted installation, see the user manual.
• Save the security torx wrench for later use after removing it from the mounting bracket.

The installation process involves attaching the mounting bracket, securing the SUN2000 unit to the bracket using M12 bolts (45 N·m torque), and then securing the unit with M6 bolts (5 N·m torque).

NOTE: You are advised to apply anti-rust paint on the hole positions for protection.

4 Installing Cables

4.1 Installation Preparations

NOTE:

• Before installing cables, ensure that all required OT terminals and cables are prepared.
• The following table lists only recommended cable specifications. For more cable specifications, see the user manual.

4.2 Installing the Ground Cable

NOTE:

• The ground point on the enclosure is preferred to connect to the PE cable for the SUN2000.
• The ground point in the maintenance compartment is mainly used for connecting to the ground cable included in the multi-core AC power cable. For details, see section " 4.4 Installing AC Output Power Cables."
• The ground cable must be secured.
• It is recommended that the ground cable of the SUN2000 be connected to the nearest ground point. For a system with multiple SUN2000s connected in parallel, connect the ground points of all SUN2000s to ensure equipotential connections to ground cables.
• To enhance the corrosion resistance of the PE terminal, apply silica gel or paint on it after connecting the ground cable.

The ground cable is connected to the PE terminal using an M8 bolt with a torque of 8 N·m.

4.3 Opening the Maintenance Compartment Door

WARNING:

• Never open the host panel of the SUN2000.
• Before opening the maintenance compartment door, turn off the downstream AC output switch and the two DC switches at the bottom.
• Do not open the maintenance compartment door in rainy or snowy days. If unavoidable, take protective measures to prevent rain or snow from entering the maintenance compartment.
• Do not leave unused screws in the maintenance compartment.

1. Loosen the two screws on the maintenance compartment door using a security torx wrench.

2. Open the maintenance compartment door and install the support bar.

3. Remove the cover and hang it on the hook of the enclosure door.

NOTE: If the screws on the enclosure door are lost, obtain spare screws from the fitting bag bound to the inductor cover at the bottom of the enclosure.

4.4 Installing AC Output Power Cables

1. Remove the sealing nut and rubber liner from the AC OUTPUT cable gland.

2. Route the cable through the cable gland.

NOTICE:

• Select an appropriate rubber fitting based on the outer diameter of the AC power cable to ensure proper sealing.
• To avoid damaging the rubber fitting, do not route a cable with a crimped OT terminal through the rubber fitting.
• Do not adjust the cable when the thread-lock sealing nut is tightened. Otherwise, the rubber fitting will shift, which affects the Ingress Protection Rating of the device.

The diagram shows how to select the correct rubber fitting based on the cable diameter (D).

3. Remove an appropriate length of the jacket and insulation layer from the AC output power cable using a wire stripper. (Ensure that the jacket is in the maintenance compartment.)

a. Three-core cable (excluding the ground cable)

b. Four-core cable (including the ground cable)

4. Crimp an OT terminal.

5. Connect the AC output power cable to the terminal block, and then tighten the nut using a torque wrench that has an extension rod.

NOTICE:

• Ensure that AC terminations provide firm and solid electrical connections. Failing to do so may cause SUN2000 malfunction and damage to its terminal block, even starting thermal events.
• When connecting a PE cable, secure the screws using a socket wrench with an extension wrench longer than 200 mm.
• If the AC output power cables are subject to a pulling force because the inverter is not installed stably, ensure that the last cable that bears the stress is the PE cable.

6. Tighten the thread-lock sealing nut.

7. Clear debris from the maintenance compartment.

4.5 Installing DC Input Power Cables

Selecting DC Input Terminals

NOTE:

• The SUN2000 provides two DC switches, named as DC SWITCH 1 and DC SWITCH 2. DC SWITCH 1 controls the 1st to 6th sets of DC input terminals, whereas DC SWITCH 2 controls the 7th to 12th sets of DC input terminals.
• Select DC input terminals according to the following rules:
1. Evenly distribute DC input power cables on the DC input terminals controlled by the two DC switches.
2. Maximize the number of connected MPPT circuits.

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

The diagram shows the DC input terminals numbered 1 to 12, corresponding to MPPT1 through MPPT6.

The connection involves using Amphenol Helios H4 PV connectors. Crimp the metal contacts using H4TC0003 or H4TC0002 crimping tool. Insert the crimped terminals into the appropriate positive and negative connectors. Connect the positive and negative connectors to the DC input terminals. Ensure secure connections by pulling the cables.

NOTICE:

• Use the Amphenol Helios H4 PV connectors provided with the SUN2000. If the terminals are lost or damaged, purchase the PV connectors of the same model. The device damaged caused by incompatible PV connectors is not covered under any warranty or service agreement.
• Before connecting DC input power cables, label the cable polarities to ensure correct cable connections. If the cables are connected incorrectly, the SUN2000 may be damaged.
• Crimp the metal contacts using crimping tool H4TC0003 (Amphenol, recommended) or H4TC0002 (Amphenol).
• Insert the crimped metal terminals of the positive and negative power cables into the appropriate positive and negative connectors. Then pull the DC input power cables to ensure that they are connected securely.
• Connect the positive and negative connectors to the appropriate positive and negative DC input terminals. Then pull the DC input power cables to ensure that they are connected securely.
• If polarity of the DC input power cable is reversed and the DC switch is ON, do not turn off the DC switch immediately or unplug positive and negative connectors. The device may be damaged if you do not follow the instruction. The caused equipment damage is beyond the warranty scope. Wait until the solar irradiance declines and the PV string current reduces to below 0.5 A, and then turn off the two DC switches and remove the positive and negative connectors. Correct the string polarity before reconnecting the string to the SUN2000.

Use a multimeter to measure the DC voltage. Ensure that the locking nut is secured.

NOTICE:

• The DC voltage measurement range of the multimeter must be at least 1100 V.
• If the voltage is a negative value, the DC input polarity is incorrect. Correct the polarity.
• If the voltage is greater than 1100 V DC, too many PV modules are configured to the same string. Remove some PV modules.

4.6 Installing the RS485 Communications Cable

NOTICE:

• When routing communications cables, separate communications cables from power cables to prevent communication from being affected.
• An RS485 cable can connect to either a terminal block or an RJ45 network port. It is recommended that the RS485 cable connect to a terminal block.

Terminal Block Connection (Recommended)

1. Remove an appropriate length of the jacket and core wire insulation layer from the communications cable using a wire stripper.

2. Route the cable through the cable gland.

3. Remove the cable terminal base from the terminal block. Connect the communications cable to the terminal base.

4. Install the terminal base on the terminal block, and connect the shield layer to the ground point.

NOTE:

• When connecting the shielded cable, choose whether to crimp the OT terminal based on site requirements.
• Tie the communication cables with the cables on internal side of the maintenance compartment.

5. Bind the communications cable.

6. Tighten the thread-lock sealing nut and seal the cable gland.

RJ45 Network Port Connection

1. Prepare an RJ45 connector.

2. Route the cable through the cable gland.

3. Insert the RJ45 connector into the RJ45 network port in the SUN2000 maintenance compartment.

4. Bind the communications cable.

NOTE: Tie the communication cables with the cables on internal side of the maintenance compartment.

5. Tighten the thread-lock sealing nut and seal the cable gland.

5 Verifying the Installation

Check the following items to verify the installation:

6 Powering On the System

NOTICE: Before turning on the AC switch between the SUN2000 and the power grid, use a multimeter to check that the AC voltage is within the specified range.

1. Turn on the AC switch between the SUN2000 and the power grid.
2. Turn on the DC switches at the SUN2000 bottom.

7 SUN2000 App

NOTE:

• The SUN2000 app is a mobile phone app that communicates with the SUN2000 monitoring system over a USB data cable, Bluetooth module, or WLAN module. As a convenient local monitoring and maintenance platform, it supports alarm query, parameter configuration, and routine maintenance. The app name is SUN2000.
• Log in to Huawei AppGallery (https://appstore.huawei.com), search for SUN2000, and download the app installation package. You can also scan the QR code (https://appgallery.cloud.huawei.com/appdl/C10279542) to download the installation package.
• Connect a USB data cable, a Bluetooth module, or a WLAN module to the USB port of the SUN2000 to implement the communication between the SUN2000 and the app.

The app allows for WLAN or Bluetooth connection, or USB data cable connection. The app interface includes sections for Login Page, Select Connection Mode, Select User, and Quick Settings.

NOTICE:

• The screenshots in this document correspond to app version 3.2.00.013 (Android).
• When the WLAN connection is used, the initial name of the WLAN hotspot is Adapter-WLAN module SN, and the initial password is Changeme.
• The initial password for Common User, Advanced User, and Special User is 00000a.
• Use the initial password upon first power-on and change it immediately after login. To ensure account security, change the password periodically and keep the new password in mind. Not changing the initial password may cause password disclosure. A password left unchanged for a long period of time may be stolen or cracked. If a password is lost, devices cannot be accessed. In these cases, the user is liable for any loss caused to the PV plant.
• Set the correct grid code based on the application area and scenario of the solar inverter.

8 Grid Codes

The table lists supported grid codes for different SUN2000 models.

NOTE: The grid codes are subject to change. The listed codes are for your reference only.