PVPM1000CX

Innovative peak power and I-V-curve measurement device for photovoltaic modules und strings up to 1000V and 20Adc

Description

Description

PVPM1000cx

The devices series PVPM provide the measurement of the I-V-curve of photovoltaic modules as well as strings. By a patented procedure the device can measure and calculate the peak power Ppk, the Rs and Rp from a single I-V-curve directly at the place of assembly of the PV system. Calculation results and the diagram can be displayed on the internal graphical LC display.

The peak power is the power of a module under Standard Test Conditions (STC) [1]. So far the very sumptuous measurement of the peak power was possible only in particularly suited laboratories. By a new procedure [2], which was developed by Professor Wagner at the University of Applied Sciences Dortmund (patented), the measurement with the PVPM can easily be performed.

So the quality control of a PV system can be executed fast and economically. This simple and meaningful check in practice serves the certainty of the customer and also that of the installer. Beyond that the measured I-V-curves permit further explanations about the electrical characteristics of the verified module or string. So the PVPM is suitable as well as an instrument in research as for development purposes.

The input of detailed module parameters is not required in common.

The PVPM1000CX is a mobile measuring device with integrated battery supply and battery charger in a durable and watertight plastic housing. The device has its own industrial miniature PC and a high-contrast LCD TFT display and thus its function is independent of other devices. However if desired a PC can be attached for data transfer and further analysis of the measured values over a standard USB interface.

The PVPM is operated comfortably over the touch function of the display and an on-screen menu. The functions are defined self-describing and the user is always led by the program. So no long training activities for the operating staff are necessary.

Technical data

Technical data

(Changes reserved)

Build in a stable and waterproof (IP67) plastic case with carrying handle, automatic pressure valve and tough front panel.

Measuring Unit:

  • Miniature industrial PC 32Bit, real time clock, no mechanical moving parts
  • Sampling rate max. 100kHz
  • Resolution 0.01V - 0.25V, 0.005A – 0.01A (depending on sel. range)
  • Accuracy of the a/d converter 0,25%
  • Accuracy Peak power measurement: ±5%
  • Reproducement: ±2-3%
  • Duration of single measurement: 20ms up to 2 seconds, avoiding the influence of capacitive properties of the module under test.
  • Non volatile data storage for several thousand measurements
  • Irradiance reference sensor (Phox) with integrated Pt100 or Pt1000 temperature sensor measures irradiance and cell temperature.
  • Other commercially available sensors as e.g. ISET-Sensor® can be connected using a reliable cable connection.
  • 4-wire-cabling between PVPM and generator under test avoids mis-measurement of voltage.
  • Additional measurement of the back surface temperature of the module under test (second input for Pt100 RTD available).

The device may only be attached to a limited source of direct current (photovoltaic generator) with at most 20A

 

 

Measuring ranges of the PVPM1000cx  (changes possible):

  • Voltage: 25V / 100V / 500V / 1000V
  • Current: 2A / 5A / 10A / 20A
  • Temperature: -40°C - +100°C with Pt1000
  • Irradiance: 0 - 1300W/m2 (Standard sensor)

Ranges for current and voltage can be combined in any order

An optimal range is selected by the device automatically.

Display:

  • Colour TFT display, LED backlight, touchpanel, resolution 480 x 272 Pixel, sunlight capable

Operation:

  • Menu driven with touchscreen on the front panel
  • Operation and evaluation alternatively by Windows software, connected via USB 2.0 standard cable

 

Power Supply:

  • Lead-acid-accumulator 12V/3.4Ah
  • External power supply wide range input (90-263Vac, 47-63Hz, 40W, Out 16Vdc), UL approved
  • Integrated battery charger with overload protection for accumulator
  • Display of battery state with LEDs at the front panel

Dimensions

  • Width: 40.6 cm, Height: 17.5 cm, Depth: 33.0 cm, Weight: ca. 8kg

Betriebsbedingungen:

Temperature

Rel. Humidity

Operation:

0°C - 40°C

10% - 90% (n. c.)

Storage:

-10°C - 85°C

5% - 95%

Scope of supply

Scope of supply

  • Measuring instrument in sturdy plastic housing, watertight (IP67)
  • TFT colour display with touchscreen, LED backlight, sunlight capable
  • Battery supply
  • External power supply with wide range input
  • 4-wire-lead (10 meters)
  • Calibrated irradiation reference sensor monocrystalline (Phox), integrated temperature sensor Pt100 or Pt1000
  • Optional additional surface sensor Pt100 for module temperature
  • USB cable for linking an evaluation PC
  • Control and evaluation software for Windows 2000, XP, Vista, 7
  • Users Manual
  • External Santon Security Switch 1000V / 32A
  • Plastic case for wires and sensor

Optional Accessory:

  • Software for the automatic generation of test reports (MS Windows)
  • Test lead in different lengths (on request)

Documents

Documents

PVPMCX_datasheet.pdf

Device datasheet

437 K

Protocol_2011.PDF

Sample measurement protocol

854 K