CHNT Power CPS SC Series Manuel utilisateur

Chint Power Systems America

700 International Pkwy, Suite 102, Richardson, TX 75081

Tel: 855-584-7168 Mail: [email protected] Web: www.chintpower.com/na

Specifications and designs included in this datasheet are subject to change without notice.

CHINT POWER 2012/08-MKT

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20kW Grid-tied PV Inverter for North America

Efficiency Curve

MPPT VOLTAGE

Broad Adaptability

High Reliability

High Efficiency

Datasheet

Dimensions

The CPS SC20KTL-DO/US-480 grid-tied PV inverter is a tranformerless,

three phase product designed for the North America market in

compliance with UL and CSA standards. Patented 3-level control

algorithm and thermal design provide 97.3% maximum efficiency.

CPS SC20KTL-DO/US-480 features small size, light weight and high

power density. Multi flexible mounting modes make installation and

maintenance easy and quick. The enclosure of the inverter is rated

NEMA 3R (IP65) for general purpose outdoor applications. Enhanced

DSP control, comprehensive protection functions and advanced thermal

design enable a high reliability product with optional warranties up to 20

years.

Maximum efficiency of 97.3%, CEC efficiency of 96.5%

3-level technology and enhanced control mechanism to

achieve high efficiency over wide load range

2 MPP trackers to achieve higher system efficiency

Transformerless design

High speed and precise MPPT algorithm

Design for reliability

Comprehensive protection functions

Enhanced DSP system

Advanced thermal design, with variable speed fans

Anti-Islanding protection

Ground-fault detection and interruption circuit

Redundant controller for system protection

NEMA 3R (IP65), outdoor application

Multi mounting modes, quick installation and

easy maintenance

High altitude application

Integrated DC (+, -) and AC disconnect

Light weight, compact design for commercial rooftops

Wide MPPT range enables flexible stringing

Standard warranty: 5 years, extention up to 20 years

Model Name CPS SC20KTL-DO/US-480

Max. PV Power 27kW

Nominal DC Input Power 21kW

Max. DC Input Voltage 600Vdc

Operating DC Input Voltage Range 260-580Vdc

Start-up DC Input Voltage / Power 300V / 200W

Nominal DC Input Voltage 500Vdc

Number of MPP Trackers 2

MPPT Voltage Range 300-550Vdc

Max. Input Current 35Ax2

Number of DC Inputs and Fuses 4 conductors with fuse per each of two MPPT inputs

DC Disconnection Type Switch

Rated AC Output Power 20kW

Max. AC Output Power 20kW

Rated Output Voltage 480Vac

Output Voltage Range 422-528Vac

Grid Connection Type 3I/ N / PE

Max AC Output Current 27.3A

Rated Output Frequency 60Hz

Output Frequency Range 59.3-60.5Hz

Power Factor >0.99

Current THD <3%

AC Disconnection Type Switch

Topology Transformerless

Max. Efficiency 97.3%

CEC Efficiency 96.5%

Stand-by / Night Consumption <20W / <2W

Protection Degree NEMA 3R

Cooling Variable speed cooling fans

Operating Temperature Range -13°F to +140°F / - 25°C to +60°C (derating from +55°C / +131°F)

Operating Humidity 0-95%, non-condensing

Operating Altitude 6562ft / 2000m (derating from 4921ft / 1500m)

Display LCD + LED

Communication RS485

Dimensions (WxHxD) 21.4x41.6x8.5in / 544x1058x215mm

Weight 132lbs / 63kg

Safety and EMC Standard UL1741:2010, CSA-C22.2 NO.107.1-01, IEEE1547; FCC PART15

Grid Standard IEEE1547: 2003, IEEE1547.1: 2005

Display and Communication

Mechanical Data

Safety

DC Input

AC Output

System

Environment

Technical Data

Information furnished is believed to be accurate and reliable. However, Chint Power Systems assumes no responsibility for the consequences of use of

such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or

otherwise under any patent or parent rights of Chint Power Systems. Specifications mentioned in this publication are subject to change without notice. This

publication supersedes and replaces all information previously supplied.

CPS SC Series

Grid-tied PV Inverter

CPS SC20KTL-DO/US-480

Installation and Operation Manual

CHINT POWER SYSTEMS AMERICA CO., LTD.

Table of Contents

Before You Start…..........................................................1

Chapter 1 IMPORTANT SAFETY INSTRUCTIONS......2

Chapter 2 Overview .....................................................4

2.1 Inverter for grid-tied PV systems ........................4

2.2 Product type description.....................................4

2.3 Product features .................................................5

2.4 Circuit structure design.......................................6

2.5 Appearance description......................................6

Chapter 3 Installation...................................................8

3.1 Basic requirements.............................................9

3.2 Mechanical installation .......................................10

3.3 Electrical installation...........................................18

3.3.1 DC connection ...........................................18

3.3.2 AC and ground connection.........................24

3.3.3 Communication connection........................26

Chapter 4 Operation ....................................................29

4.1 Start-up and shut-down ......................................29

4.1.1 Start-up ......................................................29

4.1.2 Shut-down..................................................29

4.2 Operation mode..................................................30

4.3 Grid connection and power generation...............32

4.4 Fault shutdown...................................................38

Chapter 5 Human Machine Interface..........................38

5.1 Description of LCD panel ...................................38

5.2 Operation state...................................................39

5.3 Interface and menu functions .............................40

5.3.1 Interface types ...........................................40

5.3.2 Main operation interface ............................42

5.3.3 Operation information ................................43

5.3.4 Present fault...............................................44

5.3.5 History........................................................45

5.3.6 System setup .............................................46

5.3.7 System protection parameter setup ...........48

Chapter 6 Service and Maintenance ..........................51

6.1 Disassembling of fan tray assembly...................51

6.2 Restoring of fan tray assembly...........................53

Chapter 7 Technical Data ............................................58

Chapter 8 Limited Warranty........................................61

Before You Start…

This manual contains important information regarding

installation and safe operation of this unit. Be sure to read

this manual carefully before using.

Thanks for choosing this Grid-tied PV Inverter (referred to in

this manual as “PV Inverter”, or simply “Inverter”). This Grid

PV Inverter is a highly reliable product due to its innovative

design and perfect quality control. Such an Inverter is used

in high demand, grid-tied PV systems.

If you encounter any problems during installation or

operation of this unit, first check this manual before

contacting your local dealer or supplier. Instructions inside

this manual will help you solve most installation and

operation difficulties.

Please keep this manual on hand for quick reference.

Chapter 1 IMPORTANT SAFETY INSTRUCTIONS

(SAVE THESE INSTRUCTIONS)

Please read this manual carefully before installation. CPS

reserves the right not to guarantee the quality for equipment

damage if the user fails to install the equipment as per the

instructions in this manual.

ELECTRIC SHOCK HAZARD:

ll operations and wiring should be performed by qualified

technical personnel.

Disconnect the inverter from PV modules and the Power

Grid before the maintenance and operation of the

equipment.

ELECTRIC SHOCK HAZARD:

Before opening the inverter, hazardous high voltage and

energy inside the equipment must be discharged and the

DC conductors of PV modules should be grounded.

Do not remove cover until 10 minutes after disconnecting all

sources of power supply.

WARNING:

This inverter is specially designed to connect AC power to

the public grid. Do not connect the AC output of this

equipment directly to private AC power equipments.

WARNING:

Do not install the inverter under direct sunlight exposure to

Chapter 1 IMPORTANT SAFETY INSTRUCTIONS 3

avoid reducing conversion efficiency due to excessively high

internal temperature of the machine.

CAUTION:

Steel conduits as the cable protector need to be prepared by

the customers before installation.

HIGH TEMPERATURE:

lthough designed to meet international safety standards,

the PV-Inverter can become hot during operation. Do not

touch the heat sink or peripheral surfaces during or shortly

after operation.

HIGH TEMPERATURE:

The inverter and peripherals can be hot after operation.

Maintenance shall be performed 15 minutes after the DC

and AC power are both switched off.

Chapter 2 Overview

2.1 Inverter for grid-tied PV systems

CPS SC20KTL-DO/US-480 inverter can be applied to

various commercial rooftop systems and distributed power

station systems. Normally, the system mainly consists of PV

modules, DC power distribution equipments, PV inverter and

AC power distribution equipments (Figure 2-1). The inverter

converts the DC energy from PV modules to the AC energy

that is compatible with the public grid. The AC energy can be

used directly by the local load, or it can be sold to your

energy provider.

Figure 2-1 Grid-tied PV system

2.2 Product type description

CPS SC20KTL-DO/US-480 is a two-MPPT PV inverter

integrated with the DC and AC switches for indoor and

outdoor application. The suffix “US” means that this model of

inverter passes the UL certification and is specialized for the

American market.

Chapter 2 Overview 5

2.3 Product features

CPS SC20KTL-DO/US-480 inverter incorporates the

advanced 3-level and MOSFET paralleled with IGBT

technology to minimize the energy loss.

The two-MPPT design has the benefit of increasing the

power generating efficiency of the whole PV system. The

inverter has 2 MPPTs, so a separate array can be controlled

by an independent Maximum Power Point Tracking (MPPT)

control circuit. This means that the two arrays can be

installed in different positions and orientations.

The transformerless design of inverter with the benefit

of small size, light weight and high power density, provides

the best cost performance for the whole PV system.

The inverter is available for both indoor and outdoor

applications due to its NEMA 3R (IP65) protection class

enclosure.

The integrated DC and AC switches make the

maintenance more flexible and safer. Besides, the inverter

has the function to support one or two independent MPPTs

input to improve the system efficiency. Meanwhile, the

inverter can automatically identify the connection way

between PV modules due to its excellent self-adaption

ability.

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