Sunways AC String-Box Manual GB 08-09
-
Upload
athanasios -
Category
Documents
-
view
135 -
download
2
Transcript of Sunways AC String-Box Manual GB 08-09
MANUAL
String-Box 08
String-Box 12
MANUAL
String-Box 08
String-Box 12
The Sunways String Box is a generator connection box and serves as a terminal unit for
the individual string cables in PV systems.
The Sunways String Box offers the following benefits:
• Protection of the DC string main cables through string fuses (string fuses must be
ordered separately depending on the module type. Fuses can be installed at the
positive pole and the negative pole)
• Optional protection for the inverter and PV module array (DC side) against overvoltage
interference via solar connector cables (if the model with overvoltage protection is used)
• Optional DC load break switch between inverter and module array (required according
to IEC 60364-7-712)
The Sunways String Box is manufactured according to VDE 0100 and IEC 60364-7-712
and meets the requirements of protection class II. Maximum system safety is achieved
through consistent spatial separation of positive and negative poles, dual insulation of
the string cables and appropriate air and creepage distances.
For measuring purposes the positive and negative poles can be isolated to facilitate
system checks. All units feature robust and weather-resistant polycarbonate housings
that are suitable for indoor or outdoor installation with appropriate protection from the
elements.
Proper use
Functions
• All string cables are routed into the string boxes. The string fuses protect the DC cable
and the module from excessive short-circuit currents.
• An optional disconnection point can be provided in the solar system for maintenance
purposes.
• A cable with adequate cross-section must be used for the overvoltage protection facil-
ity (min. 16 mm2 depending on the cable length). Overvoltage protection can be inte-
grated into the monitoring system through the voltageless remote signalling contacts.
• Output cables with cross-sections up to 35 mm2 (fine-strand) or 50 mm2 (multi-strand)
can be used. In the version with integrated DC load break switch cables with cross-
sections up to 95 mm2 can be connected.
The Sunways String Box is available with the following options:
String Boxes
Art. No. Description
SE100E10A String-Box 08 Basic
SE101E10A String-Box 08 incl. overvoltage protection
SE102E10A String-Box 08 incl. overvoltage protection and DC switch
SE103E10A String-Box 12 Basic
SE104E10A String-Box 12 incl. overvoltage protection
SE105E10A String-Box 12 incl. overvoltage protection and DC switch
PV fuses 10x38 mm (set of 10)
Art. No. Description
SE106E10A 8 A, 1000 V (for modules with 5“ cell)
SE107E10A 12 A, 1000 V (for modules with 6“ cell)
SE108E10A 16 A, 1000 V
PV sleeves 10x38 mm (set of 10)
Art. No. Description
SE109E10A (as fuse substitute at the negative pole)
Product overview
Operating principle
Delivery scope
- String Box
- DIN fittings
- Quick reference guide for installation and connection
Safety instructions
- The installation must be carried out by qualified personnel according to the
specified standards and guidelines.
- Any damage to the casing must be rectified as soon as possible in order to prevent
ingress of moisture and contaminants and risk of electric shock.
- Generally applicable safety instructions and regulations can be found in the
following standards:
DIN VDE 0100-712 Solar photovoltaic (PV) power supply systems
(Requirements for special installations or locations)
VDI 6012 VDI Guideline: Local energy systems in buildings - Photovoltaics
BGV A1/A2 Safety Regulations of Employer‘s Liability Insurance Association;
Electrical Systems and Operating Equipment
IEC 62548 Installation and safety requirements for photovoltaic (PV)
IEC82/514/CD generators
Caution! Dangerous DC voltages are present in the generator connection
box. Even after the DC load break switch has been disconnected
voltages up to 1,000 VDC are still present at all terminals
(capacitor charge of the inverter and voltage in the module array).
Installation
IP65
Installation location
During installation please ensure that:
- the mounting surface is as level as possible, in order to prevent distortion of the
casing during fastening screw and subsequent leaks;
- the String Box is fitted such that it is easily accessible in order to actuate the
DC load break switch;
- the String Box is not directly subjected to the elements, in order to prevent
premature aging of the casing and overheating of the internal components.
(max. ambient temperature ta = 40°C )
Cable entry
- Use the enclosed DIN fittings for the cable entry.
- Fasten the cable glands properly.
- Fit the enclosed rubber seals to the DIN fittings in order to prevent ingress of
moisture and dust.
IP65
Installation examples for tracking
systems or frame-mounted systems.
Rubber seal
To connect the String Box proceed as follows:
1. Disconnect the DC load break switch at the String Box (position 0).
If your box does not have a load break switch,
use the switch in or on the inverter.
2. Open the fuse holder and remove the fuses. Always disconnect the DC load break
switch before opening the fuse holder.
3. Connect the strings directly to the fuse holders via screw terminals.
4. Measure the polarity and voltage of the connected strings
(open fuse holder, without fuse)
Electrical connection of the String Box
Caution: Failure to observe the polarity and voltage at the individual strings
can lead to arching when the fuse holder is opened and closed with the fuse
inserted. Fire hazard!
Connect the DC main cables to the inverter. Depending on the cable shoes used,
cables with up to 95 mm2 cross-section can be connected to the String Box.
Some String Box versions feature surge protectors. If the surge protector was trig-
gered the fault is displayed at the varistor or indicated via the potential-free contact.
The earth lead should have a minimum cross-section of 16mm2 and be connected
along the shortest route to the equipotential bonding designated for the PV system.
Important: In order to ensure the correct function of the surge protector on the
AC and DC, the whole system must be operated with the same equipotential
bonding (earth strip or rod).
5. Once all cables have been installed and connected properly, the system check can
commence. Please enter the measured values in the test protocol on the last page.
For the measurement proceed as follows:
a) Open the fuse holder in de-energised
state.
b) Remove the fuses.
c) Set the measuring device to DC
voltage measurement.
d) Measure the individual strings.
e) Enter the measured values in the log
f) Important! The values should be
within the range +/- 10 V.
FM-Kontakt
6. Once all strings have been measured and recorded, the fuses can be inserted and
closed.
7. Before closing the DC load break switch please familiarise yourself with the
commissioning guide for the inverter. If all conditions for safe connection of the
DC voltage are met, the switch can be actuated.
8. Finally please ensure that all covers are closed properly, in order to prevent ingress
of moisture and dust.
9. The String Box is supplied with metal sleeves in the negative pole fuse holders as
standard. These can be replaced with fuses. No additional fuse sleeves must be
used at the positive pole.
INPUT INPUT
OUTPUT
String Box 08 with overvoltage protection
String Box 08 with overvoltage protection and DC load break switch
Input
No. of inputs String-Box 08: 8 x plus, 8 x minus
String-Box 12: 12 x plus, 12 x minus
Max. DC voltage/terminal 1000 V
Max. DC current/terminal 8,5 A
DIN fitting M16
Screw terminals max. max. 10 mm²
Fuse socket 10 x 38 mm
Output
No. of outputs 1 x plus, 1 x minus
Max. DC voltage 1,000 V
Max. DC current 75 A
DIN fitting M25
Screw terminals max. 35 mm2 fine-strand / 50 mm2 multi-strand
DC load break switch (optional)
Max. open-circuit voltage (VDC) 1,000 V
Max. DC current (ADC) 80 A
Isolator unit Socomec Sirco 125 A 4-pin, external actuation
Output terminals Cable socket M8 at switch
Cable entry DIN fittings
Overvoltage protection (optional)
Category Class II / “C“
Type Phoenix VAL MS1000 DC
Housing
Design Protection Class II / P65, polycarbonate
Dimensions (without DC load break sw.) String-Box 08: 380 x 280 x 130 mm (W x H x D)
String-Box 12: 558 x 280 x 130 mm (W x H x D)
Dimensions (with DC load break sw.) String-Box 08: 660 x 320 x 179 mm (W x H x D)
String-Box 12: 860 x 320 x 179 mm (W x H x D)
Ambient temperature 40°C
Other features Pressure compensation element to prevent
condensation
Technical Data
String measurements
ModulesManufacturer
Model
Nominal output Wp
Open-circuit voltage V (U0C)
Nominal voltage V (Umpp)
Nominal current A (Impp)
Short-circuit current A (Isc)
Temp. coeff. (Uoc) %/K / mV/K
Strings
No.
Modules in series
Fuse protection A
Cable cross-section mm2
Inverter
Manufacturer
Model
Nominal output kW ACp
AC Spannung V
max. DC output kWp DC
max. DC current A DC
max. open-circuit voltage V DC
MPP control range V
System location
Name
Additional name
Street
Post Code, Town/City
Contact
Installers
Company
Name
Additional name
Street
Post Code, Town/City
Phone
Fax
Date
Client
signature
String measurementsInput U0C (VDC) Input U0C (VDC) String 1 String 36
String 2 String 37
String 3 String 38
String 4 String 39
String 5 String 40
String 6 String 41
String 7 String 42
String 8 String 43
String 9 String 44
String 10 String 45
String 11 String 46
String 12 String 47
String 13 String 48
String 14 String 49
String 15 String 50
String 16 String 51
String 17 String 52
String 18 String 53
String 19 String 54
String 20 String 55
String 21 String 56
String 22 String 57
String 23 String 58
String 24 String 59
String 25 String 60
String 26 String 61
String 27 String 62
String 28 String 63
String 29 String 64
String 30 String 65
String 31 String 66
String 32 String 67
String 33 String 68
String 34 String 69
String 35 String 70
Commissioned
Date
Company
Installer
Installer
signature
Sunways AG
Photovoltaic Technology
Macairestraße 3 - 5
D - 78467 Konstanz
Phone + 49 7531 996770
Fax + 49 7531 99677444
E-Mail [email protected]
www.sunways.de
Technical Hotline: +49 7531 99677577
SD 4
3051
2A 0
9/08