Chint Power CPS SC2.8KTL User manual

CHINT Grid PV-Inverter
CPS SC1.5KTL, CPS SC2KTL, CPS SC2.8KTL, CPS SC4KTL,
CPS SC4KTL-O
Installation and Operation Manual
Version 3.0E 2010.07

1
Contents
Before you start…....................................................................................................3
1. Safety instructions..........................................................................................4
2. Limited Warranty ...........................................................................................6
1. Overview.........................................................................................................7
2. Features..........................................................................................................9
3. Installation instructions...............................................................................10
Opening the package .............................................................................10
Before installation ...................................................................................10
Mounting PV-Inverter to the wall ............................................................12
Connecting to the grid (AC utility)...........................................................15
Connect to PV Panel (DC input).............................................................16
Checking.................................................................................................17
4. System Diagram ...........................................................................................18
5. Operation of PV-Inverter.............................................................................19
Modes of operation.................................................................................19
Front Panel arrangement .......................................................................19
Front Panel .............................................................................................20
LCD Display Sequence ..........................................................................22

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Accuracy of the reading..........................................................................23
6. Inverter Status..................................................................................................24
Display information.................................................................................24
LED.........................................................................................................30
7. Communications..............................................................................................31
8. Trouble shooting.............................................................................................. 33
9. Specifications...................................................................................................35
Electrical .................................................................................................35
Typical Efficiency Charts vs. Load..........................................................36
10. Disposal..........................................................................................................37
11. Contact Information ....................................................................................... 38
12. Regulation & Certificate ................................................................................39
Compliance & Standards........................................................................39
VDE Certificate (European models) .......................................................40

3
Before you start…
Congratulations on choosing CHINT Grid PV-Inverter (referred to in this
manual as “PV-Inverter”, or simply “Inverter”).CHINT 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-linked PV systems.
T
Th hi is s m ma an nu ua al l c co on nt ta ai in ns s i im mp po or rt ta an nt t i in nf fo or rm ma at ti io on n r re eg ga ar rd di in ng g
i
in ns st ta al ll la at ti io on n a an nd d s sa af fe e o op pe er ra at ti io on n o of f t th hi is s u un ni it t. . B Be e s su ur re e t to o r re ea ad d t th hi is s
m
ma an nu ua al l c ca ar re ef fu ul ll ly y b be ef fo or re e u us si in ng g. .
If you encounter any problems during installation or operation of this unit, first
check this manual before contacting your local dealer or representative.
Instructions inside this manual will help you solve most installation and
operation difficulties. To get the latest manual and product information,
please visit our web site http://www.astronergy.com/cn/index.php
Thank you once again that our product is chosen, and wishes you enjoy
CHINT PV-Inverter.

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1. Safety instructions
Risk of Electric Shock
1
1. . D Do o n no ot t r re em mo ov ve e t th he e c ca as si in ng g. . T Th he e I In nv ve er rt te er r c co on nt ta ai in ns s n no o u us se er r
s
se er rv vi ic ce ea ab bl le e p pa ar rt ts s. . R Re ef fe er r s se er rv vi ic ci in ng g t to o q qu ua al li if fi ie ed d s se er rv vi ic ce e p pe er rs so on nn ne el l. .
2
2. . B Bo ot th h A AC C a an nd d D DC C v vo ol lt ta ag ge e s so ou ur rc ce es s a ar re e t te er rm mi in na at te ed d i in ns si id de e t th he e
P
PV V- -I In nv ve er rt te er r. . P Pl le ea as se e d di is sc co on nn ne ec ct t t th he es se e c ci ir rc cu ui it ts s b be ef fo or re e s se er rv vi ic ci in ng g. .
3
3. . W Wh he en n a a p ph ho ot to ov vo ol lt ta ai ic c p pa an ne el l i is s e ex xp po os se ed d t to o l li ig gh ht t, , i it t g ge en ne er ra at te es s a a D DC C
v
vo ol lt ta ag ge e. . W Wh he en n c co on nn ne ec ct te ed d t to o t th hi is s e eq qu ui ip pm me en nt t, , a a p ph ho ot to ov vo ol lt ta ai ic c p pa an ne el l
w
wi il ll l c ch ha ar rg ge e t th he e D DC C l li in nk k c ca ap pa ac ci it to or rs s. .
4
4. . E En ne er rg gy y s st to or re ed d i in n t th hi is s e eq qu ui ip pm me en nt t’ ’s s D DC C l li in nk k c ca ap pa ac ci it to or rs s p pr re es se en nt ts s a a
r
ri is sk k o of f e el le ec ct tr ri ic c s sh ho oc ck k. . E Ev ve en n a af ft te er r t th he e u un ni it t i is s d di is sc co on nn ne ec ct te ed d f fr ro om m t th he e
g
gr ri id d a an nd d p ph ho ot to ov vo ol lt ta ai ic c p pa an ne el ls s, , h hi ig gh h v vo ol lt ta ag ge es s m ma ay y s st ti il ll l e ex xi is st t i in ns si id de e
t
th he e P PV V- -I In nv ve er rt te er r. . D Do o n no ot t r re em mo ov ve e t th he e c ca as si in ng g u un nt ti il l a at t l le ea as st t 3 30 0
m
mi in nu ut te es s a af ft te er r d di is sc co on nn ne ec ct ti in ng g a al ll l p po ow we er r s so ou ur rc ce es s. .
5
5. . T Th hi is s u un ni it t i is s d de es si ig gn ne ed d t to o f fe ee ed d p po ow we er r t to o t th he e p pu ub bl li ic c p po ow we er r g gr ri id d ( (u ut ti il li it ty y) )
o
on nl ly y. . D Do o n no ot t c co on nn ne ec ct t t th hi is s u un ni it t t to o a an n A AC C s so ou ur rc ce e o or r g ge en ne er ra at to or r. .
C
Co on nn ne ec ct ti in ng g t th he e I In nv ve er rt te er r t to o e ex xt te er rn na al l d de ev vi ic ce es s c co ou ul ld d r re es su ul lt t i in n s se er ri io ou us s
d
da am ma ag ge e t to o y yo ou ur r e eq qu ui ip pm me en nt t. .
6
6. . C Ca ar re ef fu ul ll ly y r re em mo ov ve e t th he e u un ni it t f fr ro om m i it ts s p pa ac ck ka ag gi in ng g a an nd d i in ns sp pe ec ct t f fo or r
e
ex xt te er rn na al l d da am ma ag ge e. . I If f y yo ou u f fi in nd d a an ny y i im mp pe er rf fe ec ct ti io on ns s, , p pl le ea as se e c co on nt ta ac ct t
y
yo ou ur r l lo oc ca al l d de ea al le er r. .

5
Hot surfaces
Although designed to meet all safety requirements, some parts and
surfaces of the PV-Inverter are still hot during operation. To reduce the
risk of injury, do not touch the heat sink at the back of the Inverter or
nearby surfaces while it is operating.

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2. Limited Warranty
The Inverter comes with a standard 5-year warranty. An optional extended
warranty is available for purchase before the unit is delivered to the end user.
This warranty includes all defects of design, components and manufacturing.
Excluded from warranty are damages due to:
Breaking the product seal (opening the casing)
Improper transportation and delivery
Unqualified persons opening the unit
Improper installation
Unauthorized modification, testing or repairing
Use and application beyond the definition in this manual
Application beyond the scope of safety standards (VDE, UL etc.)
Acts of nature such as lighting, fire, storm etc.
The right to repair and/or replace the unit is at the manufacturers’ discretion.
Any damages discovered during installation should be submitted via a
written damage report within 5 working days of receiving the PV-Inverter.
Manufacturer are not responsible for damages beyond the scope of this
warranty.

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1. Overview
Model Front View Bottom View
CPS SC1.5KTL
CPS SC2KTL
CPS SC2.8KTL
CPS SC4KTL
CPS SC4KTL-O

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Parts Description
Optional communications
slot: RS485 & others
LCD Display: Showing the
inverter status
Solar panel input
Utility (AC) connection:
Terminal Block
RS232 cover
Operation LED,
Red, fault status
Operation LED,
Green, normal
Display information switch

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2. Features
Very high conversion efficiency
Automatic MPPT (Maximum Power Point Tracking)
Higher power capacity than similar products of the same size.
Embedded LCD display showing complete status information
Natural convection cooling. Quiet, fan-less design
Stylish, modern casing
Compact, small profile
High reliability
Easy installation
Maintenance free
Standard RS-232, optional RS-485 and others
Embedded ENS meets VDE 0126-1-1
No external GFCI breaker is required

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3. Installation instructions
Opening the package
After opening the package, please check the contents of the box. It
should contain the following:
1. One CHINT inverter
2. Instruction manual
3. One mounting frame
4. 4 mounting screws
5. 2 safety-lock screws
6. One cable gland (PG21) for AC cable in CPS SC4KTL and
SC4KTL-O
7. One AC socket assembly in CPS SC1.5KTL,SC2KTL and
SC2.8KTL
8. One service card
Before installation
Before starting installation please consider the following items:
C
CP PS S S SC C1 1. .5 5K KT TL L~ ~S SC C4 4K KT TL L a ar re e d de es si ig gn ne ed d f fo or r i in nd do oo or r u us sa ag ge e
(
(I IP P4 43 3) ). . D Do o n no ot t e ex xp po os se e t th he e u un ni it t t to o w we et t, , o or r m mo oi is st t c co on nd di it ti io on ns s. .
A
Al lt th ho ou ug gh h t th he e C CP PS S
S
SC C4 4K KT TL L- -O O i is s d de es si ig gn ne ed d f fo or r o ou ut td do oo or r a ap pp pl li ic ca at ti io on n ( (I IP P6 65 5) ), ,
h
ho ow we ev ve er r w we e r re ec co om mm me en nd d n no ot t e ex xp po os si in ng g t th he e P PV V- -I In nv ve er rt te er r t to o m mo oi is st t o or r w we et t
e
en nv vi ir ro on nm me en nt ts s. .
F
Fo or r o op pt ti im ma al l u us sa ag ge e d do o n no ot t e ex xp po os se e t th he e P PV V- -I In nv ve er rt te er r t to o d di ir re ec ct t
s
su un nl li ig gh ht t. . D Di ir re ec ct t s su un nl li ig gh ht t i in nc cr re ea as se es s t th he e i in nt te er rn na al l t te em mp pe er ra at tu ur re e
t
th ha at t m ma ay y r re ed du uc ce e c co on nv ve er rs si io on n e ef ff fi ic ci ie en nc cy y. .

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Check the ambient temperature of installation is within specified
range -20 ~ +55°C.
The AC grid voltage is 230VAC, 50Hz.
Electric utility company has approved the grid connection.
Qualified personnel are performing the installation.
Adequate convection space surrounds the inverter.
Inverter is being installed away from explosive vapors.
No flammable items are near the inverter.
T
Th he e P PV V- -I In nv ve er rt te er r c ca an n b be e i in ns st ta al ll le ed d a an nd d o op pe er ra at te ed d a at t l lo oc ca at ti io on ns s w wh he er re e
t
th he e a am mb bi ie en nt t t te em mp pe er ra at tu ur re e i is s u up p t to o 5 55 5° °C C. . H Ho ow we ev ve er r, , f fo or r o op pt ti im ma al l
o
op pe er ra at ti io on n, , i it t i is s r re ec co om mm me en nd de ed d t th ha at t t th he e P PV V- -I In nv ve er rt te er r i is s i in ns st ta al ll le ed d w wh he er re e t th he e
a
am mb bi ie en nt t t te em mp pe er ra at tu ur re e i is s b be et tw we ee en n 0 0~ ~4 40 0° °C C. .

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Mounting PV-Inverter to the wall
1. Select a wall or solid vertical surface that can support the PV-Inverter.
2. PV-Inverter requires adequate cooling space. Allow at least 30cm
space above and below the inverter.
3. Using the mounting frame as a
template, drill 4 holes as illustrated in
the following figures.
4. Fix the mounting frame as the figure
shows.

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5. Hang PV-Inverter on the mounting frame
6. Check the installation
conditions
a) Do not install the PV-Inverter
on a slanted surface
b) Check the upper straps of
PV-Inverter and ensure it fits
on to the bracket

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c) Insert safety-lock screws to the bottom leg to secure the inverter.
C
Ch he ec ck k t th he e s se ec cu ur re e m mo ou un nt ti in ng g o of f t th he e P PV V- -I In nv ve er rt te er r b by y t tr ry yi in ng g t to o r ra ai is se e i it t
f
fr ro om m t th he e b bo ot tt to om m. . T Th he e P PV V- -I In nv ve er rt te er r s sh ho ou ul ld d r re em ma ai in n f fi ir rm ml ly y a at tt ta ac ch he ed d. .
S
Se el le ec ct t t th he e i in ns st ta al ll la at ti io on n l lo oc ca at ti io on n s so o t th ha at t t th he e s st ta at tu us s d di is sp pl la ay y c ca an n b be e e ea as si il ly y v vi ie ew we ed d. .
C
Ch ho oo os se e a a s st tr ro on ng g m mo ou un nt ti in ng g w wa al ll l t to o p pr re ev ve en nt t v vi ib br ra at ti io on ns s w wh hi il le e P PV V- -I In nv ve er rt te er r i is s
o
op pe er ra at ti in ng g. .

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Connecting to the grid (AC utility)
1. Measure grid (utility) voltage and frequency. It should be 230VAC, 50Hz,
and single phase.
2. Open the breaker or fuse between PV-Inverter and utility.
3. For CPS SC1.5KTL, SC2.8KTL, SC2KTL, SC4KTL and SC4KTL-O,
connect AC wires as follows:
Insert utility wires through cable gland. Connect wires according to
polarities indicated on terminal block. L →LINE (brown or black), N
→Neutral (blue) and →system ground (yellow-green).
Fasten the gland plate with attached screws.
Twist the gland so that the cable is firmly fixed.
Refer to left figure.

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T
To o p pr re ev ve en nt t r ri is sk k o of f e el le ec ct tr ri ic c s sh ho oc ck k, , e en ns su ur re e t th he e g gr ro ou un nd d w wi ir re e i is s p pr ro op pe er rl ly y e ea ar rt th he ed d
b
be ef fo or re e o op pe er ra at ti in ng g t th he e P PV V- -I In nv ve er rt te er r. .
4. Suggested cable width for AC wire
Model Diameter φ
φφ
φ
(mm) Area (mm
2
) AWG no.
CPS SC1.5KTL /
CPS SC2KTL ≥1.29 ≥1.5 ≤16
CPS SC2.8KTL ≥1.63 ≥2.0 ≤14
CPS SC4KTL /
CPS SC4KTL-O ≥2.05 ≥2.5 ≤12
Connect to PV Panel (DC input)
1. Make sure the maximum open circuit voltage
(V
oc
) of each PV string is less than 500V
DC
(or
450V
DC
for CPS SC1.5KTL) UNDER ANY
CONDITION. We recommend use the solar
modules, whose total U
MPP
at STC in the string
between 250V
DC
and 350V
DC
(200V
DC
and
320V
DC
for CPS SC1.5KTL) with ambient
temperature 25°C.
2. Use MC-4 connectors for PV array terminals.
3. Connect the positive and negative terminals from the PV panel to
positive (+) terminals and negative (-) terminals on the PV-Inverter.
B
Be ef fo or re e c co on nn ne ec ct ti in ng g P PV V p pa an ne el ls s t to o D DC C t te er rm mi in na al ls s, , p pl le ea as se e m ma ak ke e s su ur re e
t
th he e p po ol la ar ri it ty y i is s c co or rr re ec ct t. . I In nc co or rr re ec ct t p po ol la ar ri it ty y c co on nn ne ec ct ti io on n c co ou ul ld d
p
pe er rm ma an ne en nt tl ly y d da am ma ag ge e t th he e u un ni it t. .

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C
Ch he ec ck k s sh ho or rt t- -c ci ir rc cu ui it te ed d c cu ur rr re en nt t o of f t th he e P PV V s st tr ri in ng g. . T Th he e t to ot ta al l s sh ho or rt t- -c ci ir rc cu ui it t
c
cu ur rr re en nt t o of f t th he e P PV V s st tr ri in ng g s sh ho ou ul ld d b be e l le es ss s t th ha an n t th he e i in nv ve er rt te er r’ ’s s m ma ax xi im mu um m
D
DC C c cu ur rr re en nt t. .
H
Hi ig gh h v vo ol lt ta ag ge es s e ex xi is st t w wh he en n t th he e P PV V p pa an ne el l i is s e ex xp po os se ed d t to o t th he e s su un n. . T To o
r
re ed du uc ce e r ri is sk k o of f e el le ec ct tr ri ic c s sh ho oc ck k, , a av vo oi id d t to ou uc ch hi in ng g l li iv ve e c co om mp po on ne en nt ts s a an nd d
t
tr re ea at t c co on nn ne ec ct ti io on n t te er rm mi in na al ls s c ca ar re ef fu ul ll ly y. .
Checking
1. When the PV panels are connected and their output voltage is greater
than 100 V
DC
but the AC grid is not yet connected, the message on the
LCD display produce the following messages in order: “MODEL= CPS
SCxxKTL-x” -> “Waiting” -> “No Utility”. The display repeats “No Utility”
and the RED “fault LED” turns on.
2. Close the AC breaker or fuse between PV-Inverter and grid. The
normal operating sequence begins.
3. Under normal operating conditions the LCD displays “Watt=xxxx.xW”.
That is the power fed to the grid. The green LED turns lights-up.
4. This completes the check.

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4. System Diagram
The typical connection diagram for the entire PV system is shown in the
following figure.
1. PV Panel: Provide DC power to inverter
2. PV-Inverter: Converts DC (Direct Current) power from PV panel(s) to
AC (Alternating Current) power. Because the PV-Inverter is
grid-connected it controls the current amplitude according to the PV
Panel power supply. The inverter always tries to convert the maximum
power from your PV panel(s).
3. Connection system: This “interface” between Utility and PV-Inverter
may consist of electrical breaker, fuse and connecting terminals. To
comply with local safety standards and codes, the connection system
should be designed and implemented by a qualified technician.
4. Utility: Referred to as “grid” in this manual, is the way your electric
power company provides power to your place. Please note that the
PV-Inverter can only connect to low-voltage systems (namely,
230VAC/50Hz).