Extech Instruments 382090 User manual

User's Guide
1000A 3-Phase Power Analyzer/Datalogger
Model 382090 (60Hz)
Model 382091 (50Hz)

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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.
Introduction
Congratulations on your purchase of the Extech 382090/382091 1000A 3-Phase Power
Analyzer Datalogger. Model 382090 is for use with 60Hz power systems. Model 382091
is for use with 50Hz power systems. This package includes four (4) clamp-on meters and
four (4) alligator clip leads that connect to the analyzer/datalogger. When the clamps and
test leads are connected to the circuit under test the user can view up to ten power
measurement displays. Also, up to 20,000 data sets can be automatically stored by the
analyzer/datalogger. Stored readings can later be transferred to a PC. Real-time logging
(readings recorded and transferred to PC at the same time) is also supported. Careful
use of these instruments will provide years of reliable service.
Features
•Ten display LCD screens capable of showing a multitude of power quality
parameters simultaneously
•Up to four current probes can be connected to the analyzer
•Measure single-phase 2-wire, single-phase 3-wire, three-phase 3-wire and three-
phase 4-wire systems
•True-RMS sensing for V, A, KW, KVAR, KVA, PF, θ, Hz, KWh, KVARh and KVAh
measurements
•Phase sequence indicator
•Backlit display
•Manual and Automatic Datalogging
•PC interface with 3-phase voltage/current waveform display & harmonic analysis
•Easy-to-use push-button operation
•Light weight and portable

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Safety
This Operation Manual provides information and warnings essential for operating the
Model 382090/382091 in a safe manner. Before using this meter, be sure to carefully read
the following safety information.
DANGER
During high voltage measurements, incorrect measurement procedures could result in
injury or death, as well as damage to the meter. Please read this manual carefully and be
sure to understand its contents before using the meter.
•Do not use the meter if the test leads appear damaged
•Use extreme caution when working around bare conductors or bus bars,
Accidental contact with the conductor could result in electric shock
•To avoid damage to the meter do not exceed the specified maximum input limits
•Use the meter only as specified in this manual to ensure that the protection
provided by the meter is not impaired
SAFETY SYMBOLS
This symbol printed on the meter alerts the operator to consult
corresponding manual topics before using related meter functions
Dangerous voltages
Meter is protected throughout by double insulation or reinforced insulation.
When servicing, use only specified replacement parts.
Complies with EN-61010-1, IEC 1010-2-32
DANGER: Indicates that incorrect operation presents extreme danger of
accident resulting in death or serious injury to the user.
WARNING: Indicates that incorrect operation presents significant danger of
accident resulting in death or serious injury to the user.
CAUTION: Indicates that incorrect operation presents possibility of injury to the
user or damage to the meter.
NOTE: Denotes items of advice related to the performance of the meter or to its
correct operation.

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Installation Safety
CAUTION
•The meter is designed for indoor use and can be safely used at temperatures
ranging from 32 to 104oF (0 to 40oC).
•Do not store or use the meter where it will be exposed to direct sunlight, high
temperature, high humidity, or condensation. If exposed to such conditions, the
meter may be damaged, the insulation may deteriorate, and/or the meter may
no longer meet the published specifications.
•The meter is not waterproof or dustproof
•Do not use the unit where it may be exposed to corrosive or explosive gases
Preparation Safety
WARNING
•To prevent electrical shock, do not allow the meter to become wet and do not
handle the meter with wet hands.
•When working with live circuits, take all suitable precautions against accidents,
including the use of electrical safety gear such as rubber gloves, rubber boots,
and safety helmets.
Connection Safety
WARNING
•To prevent electrical shock, turn the power off before connecting the test leads.
•In order to prevent electrical shock and short-circuits, shut off the power to the
line under test before connecting the line under test to the voltage input
terminals.
CAUTION
The measurement input and synchronizing input are not isolated from each other.
Connecting either one means that the other is exposed and live with a danger of
electrical shock present. To avoid electrical shock, connect both terminals.
WARNING
To avoid electrical shock and/or meter damage, use caution when connecting test
leads to live components. The jaws of alligator clips can create a short circuit
between closely spaced live parts. Avoid making connections to feeder conductors or
bus bars at elevated potentials.
•Follow all city, state, and local codes. Obey posted instructions.
•Never assume that a circuit is de-energized, check it first.
•Always set up the measurement first and then connect test leads to the circuit.
•Make connections to the meter first, before connecting leads to a live circuit.
•Connect the ground lead first, then the voltage leads and the current probe.
Disconnect in reverse order.

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Analyzer Description

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1. Input jacks for test leads (U1, U2, U3, N)
2. Input jacks for current probes (I1, I2, I3, I4)
3. Plug for external AC adaptor
4. Optical RS232 PC interface output
5. LCD display
6. WIRING key Select the type of electrical system under test using the WIRING key.
Select 1P2W (for signal-phase two-wire power lines), 1P3W (for signal-
phase three-wire power lines), 3P3W2M (for three-phase three-wire power
line without neutral using the two power meter method; use this selection
when measuring three-phase power with 2-current probe measurement
only) and 3P4W (for three-phase four-wire power lines with neutral)
7. key Phase sequence detection function key. In the 3P4W mode, press and
hold this key to display the phase detection results as follows:
Normal phase
Reverse phase
8. HOLD key Data hold function key, press HOLD key to freeze displayed reading (the
HOLD icon will appear). Press HOLD again to exit Hold function.
9. key Backlight function key, press to turn backlight on or off. The backlight will
switch off automatically after 30 seconds.
10. PF key Press to view the power factor value (the PF icon is displayed)
11. Θkey Press to view the measured phase angle value (ψicon is displayed)
12. Hz key Press to display the measured frequency (the Hz icon is displayed)
13. I4 key Press to display the I4 current probe value (the I4 icon is displayed)
14. SET key Press and hold the TIME key then press the SET key to enter the time set
mode and datalogger sampling rate set mode
15 TIME key Press to display the current date and time
16.  ↵Used when setting the date and time. Also used to recall manually
recorded data
17. START key Press to start the automatic datalogging function
18. STOP key Press to stop/pause the automatic datalogging function. Press START to
resume recording.
19. MEMORY Press key to store one reading (set), the ‘M’ icon and the memory address
will display (total manual memory size is 99 sets)
20. READ key Press to recall a manually stored data set
21. POWERPress to display the measured power. Use this button to cycle through the
Pt123, Qt123 and St123 displays
22. ENERGY Press to display the total integrated power energy
23. KEY Lock Press to lock all of the keys except the and keys
24. key Power on-off key

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Display Description
: Auto power off indicator
HOLD : Display hold mode
LOCK : Lock-out mode
BT : Low battery indication
ψ: Phase angle display
: Phase angle unit of measure (degrees)
1P2W: Single-phase two-wire power line indicator
1P3W: Single-phase three-wire power line indicator
3P3W2M: Three-phase three-wire power line indicator
3P4W: Three-phase four-wire power line indicator
P1: Phase 1 active power indicator
P2: Phase 2 active power indicator
P3: Phase 3 active power indicator
Pt: Total active power indicator and total active energy indicator
KW: Active power unit of measure (kilo-watt)
KWh, MWh: Active energy units of measure (kilo-watt hours and Mega-watt hours)
PF1: Phase 1 power factor indicator
PF2: Phase 2 power factor indicator
PF3: Phase 3 power factor indicator
PFt: Total power factor indicator
I4: Current probe No. 4 measurement indicator
Hz: Frequency unit of measure (hertz)
DATA No.××: Manually datalogged memory address (01~99)
M: Datalog record indicator; M displays momentarily each time a data set is recorded
DATA R No.××: Memory address for recalled reading
DATA M ××: Auto datalogging indicator; M flashes each time a data set is recorded.
01 ~ 10: Memory blocks (20,000 max. data sets can be stored)
FF: Memory full indicator (when 10 memory blocks or 20,000 readings are filled)

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Q1: Phase 1 reactive power indicator
Q2: Phase 2 reactive power indicator
Q3: Phase 3 reactive power indicator
Qt: Total reactive power indicator and total reactive energy indicator
Kvar: Reactive power unit of measure
Kvarh, Mvarh: Reactive energy unit of measure
S1: Phase 1 apparent power indicator
S2: Phase 2 apparent power indicator
S3: Phase 3 apparent power indicator
St: Total apparent power indicator and total apparent energy indicator
KVA: Apparent power unit of measure (Kilo-volt/amps)
KVAh: Apparent energy unit of measure (kilo-volt amp hours)
MVAh: Apparent energy unit of measure (mega-volt amp hours)
TIME: Current date and time indication
Y-M D-h m-s: Date and time
INTV: Automatic datalogging sampling interval setting indicator
START: Energy calculation start-time indicator
STOP: Energy calculation stop-time indicator
U1, V, A: Single-phase two-wire (1P2W) U1 voltage and I1 current measurement
U1, V, A, U2, V, A: Single-phase three-wire (1P3W) U1, U2 voltage and I1, I2 current
measurement
U12, V, I1, A, U23, V, I2, A: Three-phase, three-wire, two-power method (3P3W2M);
U12, U23 voltage and I1, I2 current measurement
U1, V, A, U2, V, A, U3, V, A: Three-phase, four-wire (3P4W) U1, U2, U3 voltage and I1,
I2, I3 current measurement
V: Voltage unit of measure
A: Current unit of measure (ampere)
1000V: Voltage range indication
250A, 500A, 1000A: Current range indication (Autoranging)

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Operation
CAUTION: Turn the meter off before connecting to the equipment under test.
DANGER: Voltage input connectors U1 to U3 are common to input connector
N. Input connectors are not insulated; remove all unnecessary test leads.
DANGER: Voltage input connectors U1 to U3 are common to input connector
N. Input connectors are not insulated; remove all unnecessary test leads.
DANGER: Voltage input connectors U1 to U3 are common to input connector
N. Input connectors are not insulated; remove all unnecessary test leads.
WARNINGS
•Always set up the measurement first and then connect the test leads to the circuit.
•Make connections to the instrument first, before connecting leads to a live circuit.
•Connect the ground lead first and then the voltage leads and current probe;
disconnect in reverse order.
•Remove all test leads that are not in use.
Single-Phase 2-Wire (1P2W) Power System Measurement
U1 must be connected to the voltage source during the measurement of U2, U3, I1, I2 and I3
since U1 is the main signal source for the entire meter measurement system.
A: Line, N: Neutral, G: Ground; ¨Face the arrow toward the load.
1P2W Wiring Connection Diagram
1. Press key to turn the meter on
2. Press the WIRING key to select 1P2W, the 1P2W annunciator will be displayed.
3. Connect the voltage test leads and current probe to the meter.
Connect the black voltage test lead to the “N” terminal.
Connect the red voltage test lead to the “U1” terminal.
Connect the I1 current probe output plug to the “I1” jack.
To measure ground leakage current, connect the I4 current probe output plug to the
“I4” jack.

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4. Connect the voltage test leads and current probe to the electrical equipment under test.
CAUTION: Turn the meter off before connecting the voltage test leads
and the current probe to the electrical equipment under test.
Connect the black voltage alligator clip to the Neutral Line “N”.
Connect the red voltage alligator clip to Line “A”.
Press the I1 current probe trigger to open the jaw and then fully enclose Line “A”.
To measure ground leakage current, press the I4 current probe trigger to open the
jaw and then fully enclose the Ground Line “G”.
5. To measure frequency, press the “Hz” key.
To measure the phase angle, press the “Θ” key.
To measure the ground leakage current, press the “I4” key.
To measure the power factor, press the “PF” key.
6. To measure energy, press the “ENERGY” key, the “Pt”, “Qt”, “St” and “PFt” or “ψt”
annunciators and energy integration start time will display.
The energy integration value and the current time will continually update. Press the “ ↵”
key to pause the energy calculation; the HOLD annunciator will display. Press the
HOLD key to exit the energy measurement mode.