Extech Instruments 380801 Manuale utente

Model 380801/803 Version 3.1 July 2003

User's Guide

Power Analyzer Model 380801

Power Analyzer Datalogger Model 380803

Introduction

Congratulations on your purchase of the Extech 380801 or 380803 Power Analyzer

Datalogger. This device offers the following features:

•Convenient front panel plug-in and testing

•Four displays for Watts, PF/VA, V/KHz, Amperes

•True power, true RMS for AC Voltage (V) and Current (A)

•Datalogger stores over 1000 readings (Model 380803)

•Auto Range for Watts and Volts

•RS-232 PC Interface

•WindowsTM Application Software

Careful use of this meter will provide years of reliable service.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Back to the Extech 380801 Product Page

380801/803 Version 4.0 7/05

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one

year from date of shipment (a six month limited warranty applies on sensors and cables). If it should become necessary to

return the instrument for service during or beyond the warranty period, contact the Customer Service Department at (781)

890-7440 ext. 210 for authorization or visit our website at www.extech.com (click on ‘Contact Extech’ and go to ‘Service

Department’ to request an RA number). A Return Authorization (RA) number must be issued before any product is returned

to Extech. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in

transit. This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation

outside of specification, improper maintenance or repair, or unauthorized modification. Extech specifically disclaims any

implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct, indirect, incidental

or consequential damages. Extech's total liability is limited to repair or replacement of the product. The warranty set forth

above is inclusive and no other warranty, whether written or oral, is expressed or implied.

Specifications

WATT (Auto Range, AC+DC, Crest Factor < 5)

Range Resolution Accuracy Input

200W 0.1W

2000W 1W ±(0.9% reading + 5digts) (50/60Hz)

±(2% reading + 9digts) (40 to 400Hz) 0-300V, 0-20A,

PF=0.5 to 1

VOLTAGE (True RMS, Auto Range, AC+DC, Crest Factor < 5)

Range Resolution Accuracy Overload Protection

200V 0.1V

750V 1V

±(0.5% reading + 5digts) (40 to 400Hz) 1000VDC/750VAC

CURRENT (True RMS, AC+DC, Crest Factor < 5)

Range Resolution Accuracy (40 to 400Hz) Overload Protection

2 0.001A

20 0.01A ±(0.5% reading + 5digts) 20A, fused

PF (Direct Calculation from W, V, A): PF = Watt / (V * A)

FREQUENCY (Sensitivity 5V)

Range Resolution Accuracy

40Hz to 20kHz 1Hz-10Hz ±(0.5% of rdg ±2digts

Memory Size (380803) 1012 x 4 readings (non-volatile)

Memory Life (380803) 100,000 memory writes

Display 2000 count LCD displays

Over Range Indication ‘OL’ displayed on LCD

Sampling Rate 2.5 times per second

Power Source Eight 1.5V ‘AA’ batteries or AC adaptor

Power Consumption 22 mA approx.

Operating conditions 32 to 122oF (0 to 40oC); Less than 80%

Dimension 13.9"(L) x 11.8"(W) x 3.9" (H)

352(L) x 300(W) x 100(H)mm

Weight 3.6 lbs (1.637 Kg) approx.

380801/803 Version 4.0 7/05

Meter Description

1. Watts display

2. PF or VA display

3. V or KHz display

4. A display

5. 20A fuse

6. Input Receptacle

7. Input Terminal

8. Output Terminal

9. Output Receptacle

10. RS-232 Terminal

11. DC 12V Adaptor Input

12. Hold

13. MAX button

14. PF/VA Select Button

15. REC button (380803)

16. KHz (frequency)

17. On/Off Button

18. Battery Compartment Cover

19. Carrying Handle

20. Storage Space for Accessories.

Model 380801/803 Version 3.1 July 2003

Basic Operation

Warning: If a power source of 220V is connected to the input voltage terminal/receptacle,

do not connect a110V device to the output load terminal/receptacle.

Using Receptacles

1. Plug one end of the power cord into the input receptacle and plug the other end into

the wall outlet.

2. Plug the device to be tested into the output load receptacle. The display will show the

W, PF, V, and A for the device under test.

Note 2: W= VA, 1KW = 1KVA = 1000W = 1000VA, when PF = 1.

Warning: The input receptacle and terminal are connected in parallel (as are the outputs).

To avoid electrical shock, do not touch any metal part of the receptacle or terminal.

Using Terminals

1. Plug one end of the power

leads into the input voltage

terminal (left) and connect

the other end of the test

leads to the power source.

2. Plug the device power

leads into the output load

terminals. W, PF, V, and A

will display for the device

under test.

Note 2: W=VA, 1KW = 1KVA = 1000W = 1000VA, when PF =1 at DC

Warning: The input and output receptacle and terminal are connected in parallel Do not

touch any metal part of the receptacle or terminal to avoid electrical shock.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

380801/803 Version 4.0 7/05

Glossary of Terms

W True Watt

PF Power Factor

V True RMS Voltage

A True RMS Ampere

Phase angle Time difference between V and A calculated by

cos-1 (Power Factor)

VA Apparent Power (V * A)

VAR Reactive Power (SQRT [VA2– W2])

IR Equivalent current (through equivalent resistance)

Req Equivalent resistance

IL Equivalent current (through equivalent inductance)

XL Equivalent impedance of equivalent inductance

Leq Equivalent inductance

CAP Required capacitance

CR Carriage Return

LF Line Feed

EPS Datalogger Memory Self-test

EPE Erasing Datalogger Memory

W3φTrue Power (3φ3W)

WRS Power of R phase with respect to S phase

WTS Power of R phase with respect to S phase

VA3φApparent Power (3φ3W and Balanced Load)

VAR3φReactive Power (3φ3W and Balanced Load)

PF3φPower Factor (3φ3W and Balanced Load)

Mean Mean Value

Std Dev Standard Deviation

Best Fit A line drawn to fit a curve with minimum error

Calibration and Repair Services

380801/803 Version 4.0 7/05

Using Two Power Analyzers

Measure WRS and WTS (RST phases must be correctly identified)

1. Connect the R-phase of the power source to the black terminal of the input

voltage of power analyzer 1.

2. Connect the S-phase of the power source to the red terminal of the input

voltage of power analyzer 1.

3. Plug the R-phase of the device to be tested to the black terminal of the output

load of power analyzer 1. Do not short the R-phase of the load to the R-phase

of the input power source.

4. Record the reading of WRS displayed on the ‘W’ LCD of power analyzer 1.

5. Connect the T-phase of the power source to the black terminal of the input

voltage of power analyzer 2.

6. Connect the S-phase of the power source to the red terminal of the input

voltage of power analyzer 2.

7. Plug the T-phase of the device to be tested to the black terminal of the output

load. Do not short the T-phase of the device to be tested to the T-phase of the

input power source.

8. Record the reading of WTS displayed on the Watt LCD of power analyzer 2.

Model 380801/803 Version 3.1 July 2003

Basic Operation

Warning: If a power source of 220V is connected to the input voltage terminal/receptacle,

do not connect a110V device to the output load terminal/receptacle.

Using Receptacles

1. Plug one end of the power cord into the input receptacle and plug the other end into

the wall outlet.

2. Plug the device to be tested into the output load receptacle. The display will show the

W, PF, V, and A for the device under test.

Note 2: W= VA, 1KW = 1KVA = 1000W = 1000VA, when PF = 1.

Warning: The input receptacle and terminal are connected in parallel (as are the outputs).

To avoid electrical shock, do not touch any metal part of the receptacle or terminal.

Using Terminals

1. Plug one end of the power

leads into the input voltage

terminal (left) and connect

the other end of the test

leads to the power source.

2. Plug the device power

leads into the output load

terminals. W, PF, V, and A

will display for the device

under test.

Note 2: W=VA, 1KW = 1KVA = 1000W = 1000VA, when PF =1 at DC

Warning: The input and output receptacle and terminal are connected in parallel Do not

touch any metal part of the receptacle or terminal to avoid electrical shock.

380801/803 Version 4.0 7/05

WindowsTM Application Program

1. Start WindowsTM

2. Insert the supplied program disk in the appropriate drive

3. Press the START button and select Run

4. Type SETUP and press the Enter key

5. Follow the on-screen instructions

Main Software Window

When the program icon ‘Power Analyzer’ is selected and executed, the program

automatically searches for a connected power analyzer on an available serial port. If

no serial port is available a ‘No Communication’ message will display and the program

halts. Once the PC communication port is setup correctly, the main software window

will be displayed as shown below:

FILE: Under FILE, the options detailed below are available.

Name: Enter a file name where data will be stored.

Start Recording: There are two sub-options under the START pull down menu:

•Now: Starts automatic continuous recording when selected

•Manually: A RECORD button will appear at the bottom right corner of the screen.

Press once to record one data point.

End Recording: Stop recording data into the opened file.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

380801/803 Version 4.0 7/05

View: Display the ASCII data in the view window shown below.

File: Enter a file name when prompted.

The program will bring up one block of

data.

Blocks Read: Number of data blocks

read.

Records Read: Indicate how many

records have been read.

Chars/Record: Indicate how many

characters in one record.

Current Block: The current block

number.

Selected: The current record number

selected.

Plot Data from File: Opens an x-y

graph of the currently selected file as

shown below.

File: Open the data file to plot.

Select: Select one of the parameters W,

V, A, PF, VA, etc. to plot

Scale: Set the Y-axis scaling.

X Label: Select sequence number (1, 2,

3, 4) or time (12:00:01, 12:00:05) as

the X-axis label.

Title: Enter the title for X-axis, Y-axis, or

Graph.

Grid: Draw Horizontal and/or Vertical grids.

Zoom: The zoom size is limited to 3600 points.

Statis (Statistics): Plot average value, standard deviation, and best fit over the curve. This

function is valid only when there are less than 3600 data points.

Clear: Clear the graphic screen.

Print: Prints the graph to connected printer.

OPTION: The Option menu on the main software screen provides the following three

options:

•Sample Rate: Sample rate is the interval of time between readings. Select the

desired interval time here or click on SAMPLE on the main software screen.

•Baud Rate: Select the baud rate (9600, 4800, 2400 or 1200).

•Language: Select WindowsTM in English or Chinese.

Get Hz: Obtain a frequency reading in Hz.

KWH: Kilo-Watt Hours (Sum of ‘W’ * Sampling time / 1000 / 3600)

Est. KWH per month (usage 24 hrs/day): Estimated KWH. Select per month, year, or day,

and enter the daily usage (0-24 per day).

Serial Number: Enter a serial number; the program will increment the serial number for

each record.

Last Record: Contents of the last data record.

Record Button: Appears only when Manual recording is selected. Press once to store one

record.

380801/803 Version 4.0 7/05

Power Factory Improvements (IMPROVE PF Menu item on main software screen)

Calculate the required

capacitance to improve

power factor by entering

the desired PF, A, VA,

VAR, or Phase Angle.

Press the ENTER key and

the program will calculate

the required capacitance.

This function can only be

used for AC. If the power

analyzer senses that the

frequency of voltage is ‘0’

an error message will

display.

Press the UPDATE button

each time changes are

made to obtain a new

capacitance value. Click

PRINT to obtain a hard

copy of the software

window.

Warning: This function is valid only when circuit is equivalent to a voltage source,

resistance, and inductance in parallel as drawn above.

Datalogger Software Window

Select ‘Datalogger’ from the OPTION menu and the datalogger window will appear as

shown below. To retrieve data from the datalogger, select the Read/Save button. Enter a

file name when prompted and the program will retrieve and store data in the named file.

Click the ‘i’ button to view details on the datalogger. To configure the datalogger: Make the

desired changes and press ENTER to update.

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