DayStar DS-100c Manuel utilisateur

DS-100C

I-V CURVE TRACER

User Manual

Daystar, Inc.

3240 Majestic Ridge

Version 6.02 Las Cruces, NM 880

November 20 575-522-4943

[email protected]

http://www.daystarpv.com

daystar, inc.

E n e r g y E n g i n e e r i n g

This I-V curve tracer was built to Daystar, Inc. specifications by:

Raydec, Inc.

82 0 La Mirada, Suite 700

Albuquerque, New Mexico 87 09

DS-TRACER Operating Manual page i

CONTENTS

CONTENTS ................................................................................................................................. i

WARNINGS ................................................................................................................................. iv

NOMENCLATURE ....................................................................................................................... v

.0 Installation & Taking IV Curves ........................................................................................

Basic Description ...................................................................................................... 1

IVPC Installation ....................................................................................................... 2

Precautions ............................................................................................................... 2

Connecting Your Computer to the DS-Tracer .......................................................... 3

Connecting a PV Mo ule to the DS-Tracer .............................................................. 3

Starting IVPC ............................................................................................................ 4

Taking an I-V Curve .................................................................................................. 5

If You Get an Error .................................................................................................... 9

Displaying Save Curves .......................................................................................... 10

Summary of Steps for Taking IV Curves .................................................................. 11

2.0 Panel Layout ....................................................................................................................... 2

Pre-Charge Fuse ...................................................................................................... 13

PV & Voltage Sense Connectors .............................................................................. 13

DISCONNECT Switch .............................................................................................. 13

Voltage Range Switch............................................................................................... 14

AC Power Entry & Fuse ............................................................................................ 15

ON-Off Switch ........................................................................................................... 15

Full Charge In icator ................................................................................................ 15

Aux Charge Power & Fuse ....................................................................................... 16

RS-232 Serial Port .................................................................................................... 16

Main USB Port .......................................................................................................... 16

Aux USB Port ............................................................................................................ 16

Irra iance Inputs ....................................................................................................... 17

Thermocouple Inputs ................................................................................................ 17

Aux Analog Inputs ..................................................................................................... 17

page ii DS-TRACER Operating Manual

3.0 Theory of Operation ........................................................................................................... 8

4.0 Maintenance ....................................................................................................................... 2

Battery Charging an Care ....................................................................................... 21

Exterior Cleaning ...................................................................................................... 22

Transportation ........................................................................................................... 23

DS-Tracer Fuses ...................................................................................................... 23

5.0 Pre-Charge Precautions .................................................................................................... 24

6.0 DS- 00C Additional Capabilities ....................................................................................... 25

Temperature & Irra iance Inputs .............................................................................. 25

Temperature Connections.................................................................................. 25

Irra iance Connections ...................................................................................... 25

Multiple Current Ranges ........................................................................................... 26

External Comman Set ............................................................................................ 26

Rea I & V “B” .................................................................................................... 27

Auto Zero I & V “Z” ............................................................................................. 27

Pre-Curve “E” ..................................................................................................... 28

Rea Analog Input “R”........................................................................................ 29

PV V & I Scales Factors “S” ............................................................................... 31

Take I-V Curve “T” ............................................................................................. 33

Rea DS-Tracer Version “V” .............................................................................. 33

Get Information “G” ............................................................................................ 34

Disable Power Down “W” ................................................................................... 36

Enable Power Down “P” ..................................................................................... 36

Transfer Curve Data “X” ..................................................................................... 36

7.0 Troubleshooting ................................................................................................................. 38

Appendix A IV Curve ASCII File Format ................................................................................. 39

Appendix B DS-Tracer ERROR CODES ................................................................................ 40

Appendix C DS- 00 USB Drivers ........................................................................................... 42

Appendix D - DS- 00C Technical Specifications .................................................................... 44

DS-TRACER Operating Manual page iii

PV Voltage Measurements ....................................................................................... 44

PV Current Measurements ....................................................................................... 44

RANGE switch settings ............................................................................................. 44

Temperature Measurement ...................................................................................... 44

Irra iance Measurement ........................................................................................... 44

Power Supply ............................................................................................................ 45

Loa Capacitors ........................................................................................................ 45

Approximate Size & Weight ..................................................................................... 45

page iv DS-TRACER Operating Manual

WARNINGS

THE IMPROPER USE OF THIS INSTRUMENT CAN PRESENT AN

ELECTRICAL SHOCK HAZARD THAT CAN CAUSE DEATH OR

SERIOUS INJURY.

THIS INSTRUMENT SHOULD ONLY BE USED AS DESCRIBED IN THIS

OPERATIONS MANUAL.

***

WARNING THIS INSTRUMENT MAY PRESENT AN ELECTRICAL SHOCK

HAZARD WHICH CAN RESULT IN DEATH OR SERIOUS INJURY IF THE

FOLLOWING PRECAUTIONS ARE NOT FOLLOWED:

• THIS INSTRUMENT MUST ONLY BE USED FOR TAKING ELECTRICAL CURRENT

AND VOLTAGE (I-V) CURVES OF PHOTOVOLTAIC (PV) SOLAR MODULES.

• THIS INSTRUMENT MUST NOT BE USED BEYOND ITS OPERATING RANGE.

• THIS INSTRUMENT MUST NOT BE USED BY PERSONNEL WHO DO NOT HAVE

EXPERIENCE HANDLING HIGH VOLTAGE DC AND PHOTOVOLTAIC MODULES.

• THIS INSTRUMENT MUST NOT BE USED DURING RAIN, SNOW, SLEET, OR IN

ANY AREA OF HIGH MOISTURE SUCH AS AREAS WITH STANDING WATER OR

MUD.

• THIS INSTRUMENT MUST NOT BE USED IF IT IS NOT FUNCTIONING AS

DESCRIBED IN THIS USER MANUAL .

DS-TRACER Operating Manual page v

NOMENCLATURE

A Amperes or Amp

Hz Hertz

I Current

Current at peak power

Isc Short-Circuit Current: The maximum current a photovoltaic cell can

generate with the output terminals shorted

I-V Current-Voltage

V hotovoltaic

V Voltage

HIGH

High voltage range < 600 Volts

LOW

Low voltage range < 150 Volts

Voc Open-Circuit Voltage: The maximum voltage a photovoltaic cell can

generate with the output terminals open circuited

Voltage at peak power

DS- 00C Operating Manual IVPC Installation & Quick-Start page

1.0 Installation & Taking IV Cu ves

Basic Descripti n

The standard DS-100C Tracer has two user selectable current ranges (10 and

100 Amperes), three automatically selected oltage ranges (600, V, 60 V, and 6

Volts), two irradiance and two temperature measurement inputs. Unless

otherwise noted, this manual refers to standard DS-100C models.

Note: The three measurement oltage ranges listed here should not be confused

with the load ranges (V

HIGH

and V

LOW

) selected with the range switch.

A computer running the IVPC for Windows program controls the DS-Tracer.

(See the IVPC Reference Manual). The computer running the IVPC application

may be connected to the DS-Tracer by RS-232 serial or USB.

Most DS-Tracer operations are performed with the IVPC program. Refer to the

IVPC manual for details on operating the DS100C IV Tracer. Howe er, the basic

steps for using the DS-Tracer are:

• Connect the DS-Tracer to the computer (either RS-232 or USB).

• Turn on the tracer power and connect DS-Tracer test leads to V array.

• Connect pyranometers and thermocouples to DS-Tracer.

• Install and run IV C for Windows (see the IV C manual for details).

• From File menu select New I-V Curve.

• Enter curve information and take curve.

• Save curve data.

To proceed with the Installation & Quick-Start, you will need the following:

• DS-Tracer I-V curve tracer and test leads.

• IV C CD-ROM.

• C computer running the Microsoft Windows® operating system.

page 2 IVPC Installation & Quick-Start DS- 00C Operating Manual

• Serial or USB cable to connect your computer to the DS-Tracer.

IVPC Installati n

IVPC is written for use with Windows® 98/2000/XP which must be running to

operate IVPC. To install IVPC, insert the IVPC CD-ROM in your computer. Open

the IVPC CD-ROM and run the “setup.exe” program by double click with the

mouse.

The setup program will prompt you for information on where you want to install

IVPC. If you are unsure, use the defaults which create an IVPC sub-directory off

of the root directory on dri e C:. IVPC Setup automatically installs the necessary

files in the IVPC directory and makes additions to your Windows system

directory.

Precauti ns

There are se eral precautions to obser e before using the DS-Tracer and IVPC

to take I-V cur es.

• The DS-Tracer battery should be fully charged. The DS-100C has a universal

power supply that works with AC line voltages from 85 V

to 264 V

50/60 Hz.

• The DS-Tracer DISCONNECT switch should be in the OFF position and the DS-

Tracer power should be turned on when making or breaking connections to a V

system or when changing the voltage range switch.

• The DS-Tracer should be connected to the V array through a V system

disconnect switch capable of interrupting the short-circuit current of the array at

peak-power voltage. This ensures that you can disconnect the DS-Tracer if a

problem occurs. Refer to the DISCONNECT switch discussion in section 2.0

anel Layout for details.

NOTE: The DS-Tracer DISCONNECT s itch is not rated to interrupt high

voltage systems producing more than five amps.

• Do not connect the DS-Tracer to anything other than an open-circuited V

system. Be sure the V array is electrically isolated from power conditioning

equipment such as charge controllers or inverters.

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