Huawei SUN2000 Series User manual

HUAWEI TECHNOLOGIES CO., LTD.

SUN2000-(100KTL, 110KTL, 125KTL) Series

Quick Guide

Issue: 05

Part Number: 31500ARJ

Date: 2019-11-19

1Overview

•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 certified electricians 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)

Panel

(2) LED indicators

(3) Maintenance compartment door

(4) Mounting bracket

(5) External fan tray

(6) DC input terminal group 1 (PV1

–PV8, controlled by

DC SWITCH 1)

(7) DC switch 1 (DC SWITCH 1)

(8) DC input terminal group 2 (PV9

–PV14, controlled by

DC SWITCH 2)

(9) DC switch 2 (DC SWITCH 2)

(10) DC input terminal group 3 (PV15

–

PV20, controlled by

DC SWITCH 3)

(11) DC switch 3 (DC SWITCH 3)

(12) Ventilation valve

(13) USB port (USB)

(14) Communications port (COM)

(15) Hole for the AC output power cable

(16) Hole for the tracking system power cable

2Installation Requirements

3Installing a Solar Inverter

Recommended: 600 mm ≤ Bottom space ≤ 730 mm

Dimensions

Angle Space

•This quick guide describes how to install a solar

inverter on a support. For details about wall-mounted

installation, see the user manual.

•The M12x40 bolt assemblies are delivered with the

solar inverter. If the bolt assembly length does not

meet the installation requirements, prepare M12 bolt

assemblies by yourself and use them together with

the delivered M12 nuts.

•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.

2. Install the solar inverter onto the mounting bracket. 3. Tighten security Torx screws.

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

Use the

handles to

facilitate

installation.

Handles are

optional and

delivered

separately.

Ensure that the

handles are

securely

installed. After

the installation

is complete,

remove the

handles and

set them aside.

Installation Positions of

Handles During Installation

Installation Positions of

Handles During Transportation

4Connecting Cables

No.

Cable

Type

Recommended

Conductor

Cross-

Sectional

Area

Outer Diameter

PE cable

Outdoor cable and M10 OT/DT

terminals

p≥ S/2

N/A

Tracking

system power

cable

Three

-core outdoor copper cable

with dual

-layer protection

10 mm

–18 mm

AC output

power cable

(multi

-core)

•If you connect a ground cable to

the ground point on the chassis

shell, you are advised to use a

three-core (L1, L2, and L3)

outdoor cable and M12 OT/DT

terminals (L1, L2, and L3).

•If you connect a ground cable to

the ground point in the

maintenance compartment, you

do not need to prepare a PE

cable but are advised to use a

four-core (L1, L2, L3, and PE)

outdoor cable, M12 OT/DT

terminals (L1, L2, and L3), and

M10 OT/DT terminals (PE).

•

Copper cable

−S: 95–185 mm2

−Sp≥ S/2

•

Aluminum alloy

cable or copper-

clad

aluminum cable:

−S: 120–240 mm2

−Sp≥ S/2

–66 mm

AC output

power cable

(

single-core)

You are advised to use a single

core

outdoor cable and M12

OT/DT

terminals.

•

Copper cable

−S: 95–185 mm2

•

Aluminum alloy

cable or copper-

clad

aluminum cable:

−S: 120–240 mm2

–32 mm

DC input power

cable

PV cable that meets the 1100 V

standard

–6 mm2

5.5

–9 mm

RS485

communications

cable

Outdoor shielded twisted pair that

meets the local standard

0.25

–1 mm2

•

One or two

communications

cables:

4–11 mm

•

Three

communications

cables:

4–8 mm

The value of

Spis valid only if the conductors of the PE cable and AC power cable use the same

material. If the materials are different, ensure that the conductor of the PE cable with a proper cross

sectional area produces a conductance equivalent to that of the cable specified in the table.

Preparations

4.1

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

•To prevent poor cable connection due to overstress, leave enough slack before connecting the

cables to the appropriate ports.

S and Spare the conductor cross-sectional areas of AC power cables and PE cables respectively.

3-pin Model (125KTL) Cable Description

4-pin Model (100KTL/110KTL) Cable Description

No.

Cable

Type

Recommended

Conductor

Cross-

Sectional

Area

Outer Diameter

PE cable

Outdoor cable and M10 OT/DT

terminal

p≥ S/2

N/A

Tracking

system power

cable

Three

-core outdoor copper cable

with dual

-layer protection

10 mm

–18 mm

AC output

power cable

(multi

-core)

•If you connect a ground cable to

the ground point on the chassis

shell and the neutral wire is not

used, you are advised to use a

three-core (L1, L2, and L3)

outdoor cable and M12 OT/DT

terminals (L1, L2, and L3).

•If you connect a ground cable to

the ground point in the

maintenance compartment and

the neutral wire is not used, you

are advised to use a four-core

(L1, L2, L3, and PE) outdoor

cable, M12 OT/DT terminals

(L1, L2, and L3), and M10

OT/DT terminals (PE).

•If you connect a ground cable to

the ground point on the chassis

shell and the neutral wire is

used, you are advised to use a

four-core (L1, L2, L3, and N)

outdoor cable and M12 OT/DT

terminals (L1, L2, L3, and N).

•If you connect a ground cable to

the ground point in the

maintenance compartment and

the neutral wire is used, you are

advised to use a five-core (L1,

L2, L3, N, and PE) outdoor

cable, M12 OT/DT terminals

(L1, L2, L3, and N), and M10

OT/DT terminals (PE).

•

Copper cable

−S: 95–185 mm2

−Sp≥ S/2

•

Aluminum alloy

cable or copper-

clad

aluminum cable:

−S: 120–240 mm2

−Sp≥ S/2

–66 mm

AC output

power cable

(

single-core)

You are advised to use a single

core

outdoor cable and M12

OT/DT

terminals.

•

Copper cable

−S: 95–185 mm2

•

Aluminum alloy

cable or copper-

clad

aluminum cable:

−S: 120–240 mm2

–32 mm

DC input power

cable

PV cable that meets the 1100 V

standard

–6 mm2

5.5

–9 mm

RS485

communications

cable

Outdoor shielded twisted pair that

meets the local standard

0.25

–1 mm2

•

One or two

communications

cables: 4–11

•

Three

communications

cables: 4–8 mm

The value of

Spis valid only if the conductors of the PE cable and AC power cable use the same

material. If the materials are different, ensure that the conductor of the PE cable with a proper cross

sectional area produces a conductance equivalent to that of the cable specified in the table.

Installing a PE Cable

4.2

•It is recommended that the PE

cable of the solar inverter be

connected to a nearby ground

point. Connect the PE points

of all solar inverters in the

same array to ensure

equipotential connections to

PE cables.

•To enhance the corrosion

resistance of a ground

terminal, you are advised to

apply silica gel or paint on it

after connecting the PE cable.

Opening the Maintenance Compartment Door

4.3

•Do not open the panel of the solar inverter.

•Before opening the maintenance compartment door, turn off the downstream AC output switch

and three DC switches at the bottom.

•Do not open the maintenance compartment door in rainy or snowy days. If you have to, 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 screws on the

maintenance compartment door. 2. Open the maintenance compartment door and adjust

the support bar.

Reserved PE point

4. Select a crimping module according to the type of the AC output power cable.

3. Remove the accessories and set them aside.

3-pin Model 4-pin Model

Multi-core Cable

Single-core Cable

(Optional) Installing the Tracking System Power Cable

4.5

•The tracking system should be equipped with an overcurrent protective device or component.

The length of the cable between the power cable terminal and the overcurrent protection device

or component must be less than or equal to 2.5 m.

•The power supply of the tracking system should be an AC three-phase power grid.

•Keep inflammable materials away from the power cable.

•The power cable must be protected with a conduit to prevent short circuits caused by insulation

layer damage.

Removing the Rubber Rings from the Crimping Module

4.4

Use scissors to cut off the joints of the rubber rings to remove them. All rubber rings are removed in

the same way.

Remove the corresponding rubber rings strictly according to the cable diameter range, and ensure

that the crimping module is not damaged. Otherwise, the protection level of the solar inverter will

be affected.

Multi-core Connection Method

Installing the AC Output Power Cable

4.6

•This section describes how to install an AC output power cable for the 3-pin model.

•The cable outer diameter can be measured using the ruler sticker in the maintenance

compartment.

•Ensure that the AC output power cable is secured. Failure to do so may cause the solar inverter

to malfunction or damage to its terminal block by issues such as overheating.

•Sufficient slack should be provided in the PE cable to ensure that the last cable bearing the

force is the PE cable when the AC output power cable bears pulling force due to force majeure.

•If a screw on the maintenance compartment door is lost, obtain the spare screw from the fitting

bag tied at the bottom of the maintenance compartment.

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