Extech Instruments 382095 User manual

User Manual
Power and Harmonics Analyzer
Model 382095

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EN 61010-2-032
CATIII600V
PollutionDegree2
Definition of Symbols:
Caution: Refer to Accompanyi ng D ocuments
Caution: Risk of Electric Shock
Double Insulati on
Over-voltage category III (CAT III): equipment in fixed installations.
WARNING: If the power analyzer is used in a manner not specified by the
manufacturer, the protection provided by the clamp meter may be impaired.
Please read the following instructions before use
1. Do not operate this instrument in wet or d usty environm ents.
2. Do not operate this instrument in the presence of combustible or explosive gas
3. Do not touc h e xposed meta l parts or unused terminals.
4. Consider the use of rub ber gl oves i n operatio n.
5. Do not operate in excess of AC 500V (P hase to Neutral), or AC 600V (Phase to Phase)
6. Do not operate this instrument if it appears to be malfunctioni ng

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Table of Contents
FEATURES 5
PANEL DESCRIPTI ON 6
OPERATING INSTRUCTIONS 11
Power Quality of a 3 Phase 4 Wire (3P4W) System 11
Power Quality of a 3 Phase 3 Wire (3P3W) System 12
Power Quality of a Single Phase (1P2W) System 13
Power Quality of a 1 Phase 3 Wire (1P3W) System 14
Measurement of a S ystem with CT or VT 15
Harmonic Analysis of Voltage or Cu rrent 16
Display the Phase Angle of Harmonics 17
Measurement of Maximum Deman d 18
Waveform of Voltage and Current 18
Waveform of Voltage Only 19
Graphic Phase Diagram 19
Phase Sequence of a 3 Phase System 21
Balance and Unbalance 3 Phase (3P3W, 3P4W) Power Sou rce S ystem 21
Balance and Unbalance 3 Phase (3P3W or 3P4W) Load System 22
Transient Capture (Dips, S wells, Outage) 23
Down Load Transient Data 25
Data Logging of Power Data (3P4W, 3P3W, 1P2W, 1P3W) 25
Down Load Po wer Da ta 25
Data Logging of Harmonics 25
Down Load Harmonics Data 26
HARDCOPY of SCREEN 27
READ the SAVED SCREE N 28
SET THE CT AND VT RATIO 29
SET THE TIME INTERVAL FOR MAXIMUM DEMAND 30
SET THE SAMPLING TIME FOR DATA LOGGING 31
SET THE CALENDER CLOCK 32
PROTOCOL OF RS-232C IN TERFACE 33
SPECIFICATIONS 33
BATTERY REPLACEMENT 41
MAINTENANCE & CLEANIN G 41
Nomenclature 42

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
Support line [phone]
Technical support: Extension 200; E-mail: [email protected]
Repair & Returns: Extension 210; E-mail: [email protected]
Product specifications subject to change without notice
For the latest version of this User ’s Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
Extech Instruments Corporation, 285 Bea r Hill Rd., Waltham, MA 02451
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 to 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 [phone] ext. 210 for authorization or visit our
website www.extech.com for contact information. 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.
Calibration and Repair Services
Extech offers repair and calibration services for the products we sell. Extech also provides NIST
certification for most products. Call the Custome r Service Department for information on calibration
services available for this produc t. E xtech recomme nds that annual calibrations be performed to verify
meter performance and accuracy.
Copyright ©2006 Extech Instruments Corporation
All rights reserved including the right of reproduction in whole or in part in any form.

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FEATURES
■ Analysis for 3P4W, 3P3W, 1P2W, 1P3W
■ True RMS value (V
123
and I
123
)
■ Active Power (W, KW, MW, GW)
■ Apparent and Reactive Power (KVA, KVAR)
■ Power Factor (P F), Phase Angle (Φ)
■ Energy (WH, KWH, KVARH, PFH)
■ Current measurement f rom 0.1 mA to 1000A, ca pable of anal yzing IT standby power consumption
to the maximum demand of a factory
■ Display of 35 Parameters in One Screen (3P4W)
■ Programmable CT (1 to 600 ) and PT (1 to 3000) Ratios
■ Display of Overlapped Voltage and Current Waveform
■ Maximum Demand (MD KW, MW, KVA, MVA) with Programmable Period
■ Harmonic Analysis (V
123
and I
123
) to the 99
th
Order
■ Display of 50 Harmonics in one Screen with Waveform
■ Display of Waveform with Peak Values (1024 Samples / Pe riod)
■ Analysis of Total Harm onic Distortion (THD-F)
■ Graphic Phase Diagram with 3 Phase System Parameters
■ Capture 28 Transient Events (Time + Cycles) with Programmable Threshold (%)
■ DIP, SWELL, and OUTAGE are included in transient events.
■ 3 Phase Voltage or Current Unbalanced Ratio (VUR, IUR)
■ 3 Phase Voltage or Current Unbalanced Factor (d0%, d2%)
■ Calculated Unbalanced Current through Neutral Line (In)
■ 512K Memory with Pro grammable Interval (Sampling time from 2 to 6000 seconds, data logging
time from 4.7 hours to 1180 days for 3P4W system)
■ Output of Waveform, Po wer Parameters and Harmonics on Command
■ Large Dot Matrix LCD Display with Backlight
■ Optical Isolated RS-232C Interface

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PANEL DESCRIPTION

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Panel Description
1. Input Terminal for Neutral Line (Voltage )
2. Voltage Input Terminals for Each Phase (V1 , V2, V3)
3. External DC Input (The AC adapto r must be 600V isolated)
4. Current Input Terminals for Each Phase (I 1, I2, I3)
5. LCD Display
6. Indication of locations where SEC., CT, VT, an d SETUP are displayed in LCD.
7. Buttons
8. RS-232C Window
9. Stand Holder
10. Stand
11. Battery Cover
12. Battery Compartment
Press this button to e xit transient detection mode. Also used to exit the SETUP menu
Press this button to pe rform t ransient detection
Press this button to hold the data displayed in LCD, press again to continue operation.
Press this button to begin th e measurement of harmonics in ma gnitude.
Press this button to select V1, I1, V2, I2, V3, o r I3 for harmonics anal ysis

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Press this button for the voltage or current input range
Press to enter the Main Menu (also used t o navigate menu items).
Press this button to increment value by one. Hold the button for t wo seconds or
more to speed u p the increment.
Press this button to decre ment value by one.
In harmonic analysis mode, use these buttons to move the cursor left or right.
Press this button to start data logging. Press it again to stop data logging. The
sampling interval is displayed in the LCD via the SEC indicator.
In the power mode, press this button to display the phase. In th e harmo nic
analysis mode, press this button to display phase angle instead of magnitude.
Press this button to tu rn the back light on. Press it again to turn the back light off.
Press this button to begin me asuring power.
Press this button to displa y the waveforms for voltage and current.
Press this button to displa y the waveform for voltage only
In the power mode, press this button to select the appropriate s ystem (3P4W,
3P3W, 1P2W or 1P3W). In the waveform mode, press to select (V1, I1), (V2, I2),
or (V3, I3).
Press this button to tu rn the power on or off.

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Current Probe (100A)
1. Jaw Assembly
2. Trigger
3. Range Selector
4. 6 pin mini DIN connector
NOTE: To choose the 100A current probe, press the SETUP button to select CLAMP. When the
CLAMP is reverse video, press the ▲or ▼button to select 100.
Current Probe (1000A)
1. Jaw Assembly
2. Trigger
3. Range Selector
4. 6 pin mini DIN connector
NOTE: To select the1000A current probe, press the SETUP button to select CLAMP. When the
CLAMP is reverse video, press the ▲or ▼button to select 1000.
(HARMON)
(POWER)
(HARMON)
60A
100A
100A
10A
1A
100A
1A
10A
10A
100A
1000A

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Flexible Current Probe (3000A)
NOTE: The flexible current probe has a maximum input of 3000A however the maximum input
current of the 382095 Power and Ha rmonics Analyzer is 1000A.
1. Control Box
2. Output Range Select S witch
3. Flexible Loop
4. Coupling Assembly
NOTE: To select the 3000A flexible current pro be, press the SETUP button to select CLAMP. When
the CLAMP is reverse video, press the ▲or ▼button to select 3000.

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OPERATING INSTRUCTIONS
NOTE: Select the co rrect CLAMP in the SETUP menu. When t he curre nt probe is connected to th e
power anal yzer, the power anal yzer will aut omatically detect the range selected.
NOTE: Select the co rrect frequency (Hz) in the SETUP menu.
WARNING: All the current p robes connected to the power analyzer must be of the same model and
same range. Mixed models and different ranges will yield incorrect measurement results.
Power Quality of a 3 Phase 4 Wire (3P4W) System
a. Turn the po wer on. Press the POWER and the 1Φ3Φbuttons to select the 3P4W system. The
type of system will be displayed at the left bottom corner in the LCD.
b. Connect the four test leads to the voltage terminals V1, V2, V3 and the V
N
(Neutral) of the
system.

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c. Co nnect the test leads to L1, L2, and L3 of the 3P4W system.
d. Connect the three current p robes to the power an alyzer input terminal I1, I2, and I3.
e. Clamp on to the L1, L2, and L3 of the 3P4W s ystem. Make sure the current flows from the front
of the current probe to the back.
f. All of the system parameters will be shown in the LCD
For a description of each parameter, refer to section XIV. NOMENCLATURE.
Power Quality of a 3 Phase 3 Wire (3P3W) System
a. Turn the power on. P ress the POWER and the 1 Φ3Φbuttons to select the 3P3W system.
The type of system will be displayed at the bottom right of the LCD.
b. Connect the four test leads to the voltage t erminals L1, L2, and L3 of the system.
c. Connect the three current probes to th e power analyzer input te rminal I1, I2, and I3.
d. Clamp on to the L1, L2, and L3. Make sure the cur rent flows from the front of the current pro be
to the back.
e. All parameters of the system will be shown in the LCD

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For a description of each parameter, refer to XIV. NOMENCLATURE.
Power Quality of a Single Phase (1P2W) System
a. Press POWER and then 1Φ3Φto select the 1P2W system. The type of system will be
displayed at the bottom right of the LCD
b. Connect the test leads to the voltage terminals L1 and V
N
(Neutral) of the system.
c. Connect one current p robe to the power anal yzer input terminal I1.
d. Clamp on to the L1. Make sure the current flows f rom the f ront of the cu rrent probe to the back
(see arrow labeled on clamp probe).
e. All of the parameters of the s ystem will be shown in the LCD
For a description of each parameter, refer to XIV. NOMENCLATURE.

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Power Quality of a 1 Phase 3 Wire (1P3W) System
a. Turn the power on. P ress the POWER and the 1 Φ3Φbuttons to select the 1P3W system.
The type of system will be displayed at the bottom right of the LCD.
b. Connect the test leads to the voltage terminals L1, L2 and V
N
(Neutral) of the system.
c. Connect the two current probes to the po wer analyzer input terminal I1 and I2.
d. Clamp on to the L1 and L2. Make sure the current flows from the front of the current probe to
the back.
e. All of the system parameters will be shown in the LCD
For a description of each parameter, refer to XIV. NOMENCLATURE.

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Measurement of a System with CT or VT (PT)
a. Turn the power on. P ress the POWER and the 1Φ3Φbutto ns to select the 3P4W system.
The type of system will be displayed at the bottom right of the LCD.
b. Connect the fo ur test leads to th e secondary voltage terminals L1, L2, L3 an d th e V
N
(Neutral)
of the system.
c. Clamp on to the secondary coils of L1, L 2, and L3. Make sure the current flows from the fro nt
of the current probe to the back (see the arro w label on the clamp probe).
d. Press SETUP to enter the SETUP menu.
e. Press SETUP several times until the CT symbol is highlighted.
f. Press the
▲
or
▼
button to increment o r decrement the RATIO specified by the CT.

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g. Press the SETUP button several times until the VT symbol is highlighted.
h. Press the
▲
or
▼
button to increment o r decrement the RATIO specified by the VT.
i. All 35 system parameters will be shown in the LCD
For a description of each parameter, refer to XIV. NOMENCLATURE.
HarmonicAnalysis of Voltage or Current
(Normal Voltage without Distortion and Harmonics)
(Distorted Current with Harmonics)
a. Setup th e analyzer for measurement of an y power system (3P4W, 3P3W, 1P2W, or 1P3W). To vie w

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the harmonic analysis of voltage or current, press the HARMO button.
b. Once the HARMO button is pressed, the waveform will be shown in the left-hand portion of the LCD,
and the 1
st
to 50
th
order harm onics will be shown in the right-hand portion of the LCD.
c. The positive and negative peak values will be shown in the waveform (Vpk).
d. The true RMS value & total harmonic distortion of voltage or current is shown under the waveform.
e. The cursor (
↑
arrow) will point to the current order of harmonics. The frequency (HZ) will be displayed
next to the cursor. The percentage of harmonics (%) will be displayed below the cursor. The
magnitude of the ha rmonics (V or A) or phase angle will be displayed next to the %.
f. Press the SETUP button several times until HAR is highlighted.
g. To move the curso r to the next harmonic, use the ◄or ►butt on.
h. To see the next page (51
st
to 99
th
order) press the ►button to pass the 50
th
order or press the ◄
button to pass the 1
st
order.
NOTE: If the waveform is clipped at the peak or too small in the LCD, press the RA NGE button to

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Measurement of Maximum Demand
1. Set the time interval for maximum demand (refer to section V)
2. The analyzer will integrate the KW and KVA over th e specified interval.
3. The maximum demand (MD) updates if ne w dem and is greater than the previous value.
In the following example, th e maximum d emand is 527.4VA and 527.4W. The time interval for maximum
demand is 2 minutes.
Waveform of Voltage and Current
Press this button to displa y the waveforms for voltage and cur rent simultaneousl y.
Press this to select different inputs (V1, I1), (V2, I 2), o r (V3, I3).
NOTE: The triggering point is the zero crossing point of V1 for V2, V3, I2, and I3. The trigge ring point
for I1 is its own zero crossing point in case V1 is not present.
NOTE: In the waveform display mode, one period/c ycle of 102 4 data points is displa yed.

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Waveform for Voltage Only
Press this button to displa y the voltage wavefo rm onl y. The true RMS value of voltage will
be displayed at the bott om of the LCD.
Press this button to select V1, V2, or V3.
NOTE: The triggering point is the zero crossing point of V1 for V2 and V3.
NOTE: In the waveform mode, one period/c ycle of 1024 data points is displayed.
Graphic Phase Diagram
Press this button to displa y the phase diagram.
The voltage and current signals are displayed in phase format (magnitude, angle).
V1 is the reference. The V1 angle is alwa ys 0 degrees.

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The phase angles of V2, V3, I1, I2, a nd I3 are displayed with respect to V1.
V1, V2, V3, I1, I2, I3, V12, V23, and V31 are displayed in vector form graphically.
V1, V2, V3: Phase voltages in phase format with respect to V1
I1, I2, I3: Line currents in phase format with respect to V1.
IVn: Calculated voltage and current of the neutral with respect to ground.
V12, V23, V31: Line voltage in phase format with respect to V1.
Ave: Average of line voltage V12, V23, and V31 and line current I 1, I2, and I3
dV%: Historical maximum % value of (Max (V1, V2, V3) – Min (V1, V2, V3)) / Min (V1, V2, V3) * 100%
VUR: Voltage (Unbalanced Ratio)
d02: The first nu mber is Zero Sequence Unbalanced Ratio in % (d0) of voltage; the second number is the
Negative Sequence Unbalanced Ratio in % (d2 ) of voltage. When VUR is displayed before d02, d02
represents the Zero and Negative Sequence Unbalanced Ratios for voltage.
REF: nominal voltage for transient detection reference
Sd%: threshold in % for transient detection with respect to nominal voltage (REF).
NOTE: The phase is drawn onl y when the reading exceeds 200 counts. If V is zero, the phase of the current
will not be drawn.
Press this button to change t he display from VUR to IUR
dA%: Historical max % value of (Max (I1, I2 , I3) – Min (I1, I2, I3 ) ) / Min (I1, I2, I3) * 100%
IUR: Current Unbalance Ratio
d02: The first nu mber is Zero Sequence Unbalanced Ratio in % (d0) for current; the second number is the
Negative Sequence Unbalanced Ratio in % (d2 ) for current. When IUR is displayed befo re d02, d02
represents the Zero ( d0) and Negative (d2) Sequence U nbalanced Ratios for current.
REF: Nominal voltage for transient detection reference
Sd%: Threshold in % for transient detection with respect to nominal voltage (REF).
NOTE: If the voltage of L1, L2, a nd L3 is not connected in the co rrect sequence, the analyzer will sho w
L1-3-2 in the right top corner, and it will beep to warn of an incor rect phase sequence.