CHNT Power CPS SC Series Bedienungsanleitung
Chint Power Systems America
700 International Pkwy, Suite 102, Richardson, TX 75081
SHANGHAI CHINT POWER SYSTEMS CO., LTD. All rights reserved.
Specifications and designs included in this datasheet are subject to change without notice.
CHINT POWER 2012/08-MKT
η
3DF:
9
9
9
9
9
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
1
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
2
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:
A
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:
A
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
4
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.
Dieses Handbuch passt für folgende Modelle
2
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