Extech Instruments 380801, 380803 User Manual

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Back to the Extech 380801 Product Page

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

• Windows

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

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

TM

Application Software

FAX [phone] - TestEquipmentDepot.com

1

Model 380801/803 Version 3.1 July 2003

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 t o
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 an d 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 modificati on. 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 o r 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)

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 122

o

F (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.

0-300V, 0-20A,

PF=0.5 to 1

2

380801/803 Version 4.0 7/05

Meter Description

1. Watts display

11. DC 12V Adaptor Input

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

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.

3

380801/803 Version 4.0 7/05

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.

4

Model 380801/803 Version 3.1 July 2003

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

FAX [phone] - TestEquipmentDepot.com

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

VA Apparent Power (V * A)

VAR Reactive Power (SQRT [VA

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

W

True Power (3φ 3W)

3

φ

WRS Power of R phase with respect to S phase

WTS Power of R phase with respect to S phase

VA

Apparent Power (3φ 3W and Balanced Load)

3

φ

VAR

Reactive Power (3φ 3W and Balanced Load)

3

φ

PF

Power Factor (3φ 3W and Balanced Load)

3

φ

Mean Mean Value

Std Dev Standard Deviation

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

-1

(Power Factor)

2

– W2])

Calibration and Repair Services

16

380801/803 Version 4.0 7/05

Using Two Power Analyzers

Measure W

and WTS (RST phases must be correctly identified)

RS

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 W

displayed on the ‘W’ LCD of power analyzer 1.

RS

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-phas e 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 W

displayed on the Watt LCD of power analyzer 2.

TS

14

380801/803 Version 4.0 7/05

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.

4

Model 380801/803 Version 3.1 July 2003

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.

8

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

FAX [phone] - 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 Windows

•

TM

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.

9

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

.

10

380801/803 Version 4.0 7/05

LOGGING INFORMATION Window

Write Counts: For every download, the Write Counts field is incremented by one.

•

Memory Size: Size of the data block in the datalogger’s memory

•

Memory: Indicates if there was a ‘write failure’ during recording. 0: None. If ‘FAIL’

•

appears, run a diagnostic test to check the memory (see the ‘Diagnostic’ section
later in this manual).

Last Record: Details on last data record in a data block.

•

Status: Status of datalogger (‘idle’ or ‘recording’).

•

DATA LOGGER SETUP Window

ID: Used to identify individual dataloggers; enter a number from 0 to 65535.

Date and Time: The datalogger does not have a real-time clock, therefore the user must

enter a date and time for the 1

st

reading (make note of the time and date at the time of
recording). The program will then distribute a date and time for all other readings based
on the date/time entered by the user and the sample rate selected. The date and time
formats are MM-DD and HH:MM:SS. Press ENTER after setting the time and date.

Sampling: Set the datalogger sample rate (interval of time between recorded readings).
Range is 0.4 seconds to 13106.8 seconds.

Recording Mode: The menu items under Recording Mode are as follows:

Normal mode: Datalogger records data at the programmed sample interval.

•

Max mode: Datalogger records the maximum value during each interval.

•

Min mode: Datalogger records the minimum value during each interval.

•

Baud Rate: Select 9600, 4800, 2400, or 1200.
COMMAND: It is recommended that this function be used only by those very familiar

with the commands of the power analyzer and datalogger. Request a copy of the
380803 Protocol Manual from Extech that includes the commands format.

FILE: The File menu heading includes the following selections:

CONVERT: Convert coded data file into an ASCII data file. A coded data file

•

RAW_DATA.DMM is generated when the Read/Save button is selected.

DATA DUMP: Select DATA DUMP to retrieve all of the data stored in the

•

datalogger. The data will be converted to ASCII format and saved in a file.

ASCII Output to RS-232: The Datalogger can be configured to output data in ASCII
format rather than coded format in order to accommodate a serial printer for
example. Ensure that the RS-232 configuration is setup as specified in the
‘Hardware Setup’ section earlier in this manual. In the Datalogger window, the
MODE selection under ‘ASCII out to RS-232’ has three options as follows:

Disable: Disable ASCII format data output.

•

One Shot Mode (Manual): When the REC butto n is pressed once, one data

•

record (W, A, V, PF + CR + LF) will output to the RS-232 port in ASCII format.

Continuous Mode (Auto): With this option selected, the user must specify an

•

output interval. Once configured, the user must turn datalogger power off and
on to enable this function. In this mode, the datalogger outputs data (W, A, V,
PF + CR + LF) in ASCII format at the specified interval continuously.

Stopping the ASCII Output Stream

If the datalogger receives any character from the RS-232 port, or if the user presses
and holds the REC button for 2 seconds to enable datalogging in AUTO MODE, the
ASCII output stream will stop. To restart it, turn power off and on again.

11

380801/803 Version 4.0 7/05

RS-232C Setup for ASCII output

To enable the ASCII output, the communications configuration must follow the
conditions defined in “Hardware Setup’ section earlier in this manual.

Using TERMINAL or TELIX programs for ASCII output

Windows TERMINAL and TELIX communication programs do not allow users to
disable the RTS line as explained earlier in the ‘Hardware Setup’ section. However,
users can rewire the RS-232 connection as drawn below:

Diagnostic of Datalogger Memory

Select DIAGNOSTIC from the
DATALOGGER window, a diagnostic
window will display as shown:

Press the READ button to view failures that
may have occurred while writing to the
datalogger memory. For no errors, the
memory status will show ‘OK’, Memory
Write Failure Counts will show ‘0’, and Last
Write Failure Address will show ‘none’. If
any WRITE failure occurred, the Memory
Status will display ‘FAIL’, the Memory Write
Failure Counts will show the number of
failures, and the Last Write Failure Address
will show the memory address for the failure.

Test the non-volatile memory of the datalogger by pressing the start button and
following the on-screen instructions (power must be on during test). The PF LCD will
display ‘EPS’ indicating that the datalogger is testing. While testing, the W, V, and A
functions continue to operate while the PF does not. Also, the power analyzer will
not send any data to its RS-232 port. When the test is complete the ‘EPS’ display
will switch off and the power analyzer/datalogger will return to normal operation.

12

380801/803 Version 4.0 7/05

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

FAX [phone] - TestEquipmentDepot.com

Replacement of Batteries and 20A Fuse

Battery Replacement

When the low battery symbol is displayed on any of
the LCDs, replace the eight (8) 1.5V ‘AA’ batteries.

1. Turn off the power analyzer.

2. Open the battery compartment by using a screw
driver (see diagram).

3. Replace the batteries.

4. Replace the battery compartment.

20A Fuse Replacement

To replace the 20A fuse, remove the fuse cover as
indicated in item (5) in the Meter Description section
earlier in this manual and replace the fuse if
necessary.

Warning: Do not replace the blown fuse with a fuse rating greater than 20A.

Measurement of 3-Phase 3-Wire Power

Using One Power Analyzer

Measure W
correctly identified)

1. Connect the R-phase of the power

2. Connect the S-phase of the power

3. Plug the R-phase of the device to be

4. Record the reading of W

Measure W
be correctly identified)

1. Connect the T-phase of the power

2. Connect S-phase of the power

3. Plug the T -phase of the device to be tested to th e black terminal of the output

4. Record the reading of W

first (RST phases must be

RS

source to the black terminal of the
input voltage

source to the red terminal of the
input voltage

tested to the black terminal of the
output load. Do not short the R­phase of the device to be tested to
the R-phase of the input power
source.

displayed

RS

on the ‘W’ LCD.

secondly (RST phases must

TS

source to the black terminal of the
input voltage

source to the red terminal of the input voltage

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

displayed on the ‘W’ LCD.

TS

13

380801/803 Version 4.0 7/05

Using Two Power Analyzers

Measure W

and WTS (RST phases must be correctly identified)

RS

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 W

displayed on the ‘W’ LCD of power analyzer 1.

RS

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-phas e 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 W

displayed on the Watt LCD of power analyzer 2.

TS

14

380801/803 Version 4.0 7/05

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

FAX [phone] - TestEquipmentDepot.com

Using Current Transformers (CT) with 2 Power Analyzers

Measure W

and WTS (RST phases must be correctly identified)

RS

1. Connect the R-Phase to the black terminal of the input voltage of power
analyzer 1.

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

1.

3. Connect the k terminal of CT1 to the R-phase.

4. Connect the l terminal of CT1 to the black terminal of the output load of power
analyzer 1.

5. The Watt reading of the power analyzer 1 is W

RS

6. Connect the T-phase to the black terminal of the input voltage of power
analyzer 2.

7. Connect the S-phase to the red terminal of the input voltage of power analyzer

2.

8. Connect the k terminal of CT2 to the R-phase.

9. Connect the l terminal of CT2 with the black terminal of the output load of
power analyzer 1.

10. The Watt reading of the power analyzer 2 is W

TS

15

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

VA Apparent Power (V * A)

VAR Reactive Power (SQRT [VA

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

W

True Power (3φ 3W)

3

φ

WRS Power of R phase with respect to S phase

WTS Power of R phase with respect to S phase

VA

Apparent Power (3φ 3W and Balanced Load)

3

φ

VAR

Reactive Power (3φ 3W and Balanced Load)

3

φ

PF

Power Factor (3φ 3W and Balanced Load)

3

φ

Mean Mean Value

Std Dev Standard Deviation

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

-1

(Power Factor)

2

– W2])

Calibration and Repair Services

16

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

FAX [phone] - TestEquipmentDepot.com

380801/803 Version 4.0 7/05