EXTECH 480400

User's Guide
Phase Sequence Tester
Model 480400
Introduction
Congratulations on your purchase of the Extech Model 408400
Phase Sequence Tester. This handheld instrument detects the
phase sequence of three-phase systems. Color-coded test leads
are provided for connecting to the three mains phases of the
system under test. This meter is shipped fully tested and calibrated
and, with proper use, will provide years of reliable service.
Safety
International Safety Symbols
!
Caution ! Refer to the explanation in this Manual
Caution ! Risk of electric shock
Earth (Ground)
Double Insulation or Reinforced insulation
AC, Alternating Current or Voltage
DC, Direct Current or Voltage
Safety Procedures
To avoid possible electric shock or fire, observe the following:
ƒ
Read the following information carefully before using or servicing
the instrument.
ƒ
Adhere to local and national safety codes.
ƒ
Individual protective equipment must be used to prevent shock
and injury.
ƒ
Use of instrument in a manner not specified by the manufacturer
may impair safety features/protection provided by the
equipment.
ƒ
Avoid working alone.
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ƒ
Inspect the test leads for damaged insulation or exposed metal.
Check test lead continuity. Damaged leads must be replaced.
Do not use the phase Rotation indicator if it appears damaged.
ƒ
Use care when working above 30V ac rms, 42V ac peak and
60V dc. Such voltages pose a shock hazard.
ƒ
When using the probes, keep fingers away from probe contacts.
Keep fingers behind the finger guards on the probes.
ƒ
Measurements can be adversely affected by impedances of
additional operating circuits connected in parallel or by transient
currents.
ƒ
Verify operation prior to measuring hazardous voltages (voltages
above 30V ac rms, 42V ac peak and 60V dc).
ƒ
Do not use the phase Rotation indicator with any of the parts
removed.
ƒ
Do not use the phase Rotation indicator around explosive gas,
vapor, or dust.
ƒ
Do not use the meter in a wet environment.
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 (781) 890-7440 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.
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Description
Meter Description
1.
2.
Test lead input jacks
3.
L1, L2, L3 display icons
4.
Clockwise Rotation LCD
Indicator R (right) and L
(left) icons
5.
2
Test Lead alligator clips
3
5
Sequence grid
4
1
Display Description
1.
Line designators (L1, L2, and L3)
2.
Color codes for test leads
3.
Clockwise / Counter-Clockwise
indicator
4.
LEFT (L) or RIGHT (R) rotation
direction
5.
Phase Sequence grid
1
2
3
4
5
1
2
3
4
4
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Operation
Determine Phase Rotation Direction
1. Connect the supplied color-coded test leads to the meter’s test
lead input jacks at the top of the meter.
2. Connect the test probes to the three mains phases for the system
under test.
3. L1, L2, and L3 indicators will illuminate one at a time on the
meter’s LCD display as each phase is connected.
4. The clockwise and counter-clockwise arrows with the left/right ‘L’
or ‘R’ icons display the phase rotation direction of the device
under test.
5. The sequence grid simply shows the three line sequences for
Clockwise ‘R’ and the three line sequences for Counter-Clockwise
‘L’.
Note: The rotational arrow indicators illuminate even if one of the test
probes is connected to a neutral or ground conductor instead of one
of the mains phases.
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Specifications
Nominal Voltage
Frequency Range (fn)
Current pickup
Nominal Test current (in per phase)
Maximum Operating Voltage (Ume)
Operating Temperature
Type of protection
Dimensions
Weight
Approvals
Safety
40 to 690 VAC
15 to 400HZ
1 mA
1 mA
690 V
o
o
32 to 104 F (0 to 40 C)
IP 40
(H x W x D): 5.1 x 2.7 x 1.3”
(130 x 69 x 32mm)
4.6 oz. (130g)
CE (EU directives)
For indoor use and in accordance with the
requirements for double insulation to
IEC1010-1 (1995): EN61010-1 (1995)
Overvoltage Category III 600V and Category
IV 300V, Pollution Degree 2.
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 Customer Care Department for information on calibration services
available for this product. Extech recommends that annual
calibrations be performed to verify meter performance and accuracy.
Support line (781) 890-7440
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 Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
Extech Instruments Corporation, 285 Bear Hill Road, Waltham, MA 02451
Copyright © 2007 Extech Instruments Corporation
All rights reserved including the right of reproduction in whole or in part in any
form.
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