Extech Instruments 480403 Manuale utente

User's Guide

Phase Sequence and Motor

Rotation Tester

Model 480403

480403 V1.0 6/072

Introduction

Congratulations on your purchase of the Extech Model 408403

Motor and Phase Rotation Indicator. This handheld instrument

detects the rotational field of three-phase systems and determines

motor-rotation direction. Color-coded test leads are provided for

connecting to the system or motor 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:

Read the following information carefully before using or

servicing the instrument.

Adhere to local and national safety codes.

Individual protective equipment must be used to prevent

shock and injury.

Use of instrument in a manner not specified by the

manufacturer may impair safety features/protection provided

by the equipment.

Avoid working alone.

480403 V1.0 6/073

Inspect the test leads for damaged insulation or exposed

metal. Check test lead continuity. Damaged leads must be

replaced. Do not use the meter if it appears damaged.

Use care when working above 30V ac rms, 42V ac peak and

60V dc. Such voltages pose a shock hazard.

When using the probes, keep fingers away from probe

contacts. Keep fingers behind the finger guards on the

probes.

Measurements can be adversely affected by impedances of

additional operating circuits connected in parallel or by

transient currents.

Verify operation prior to measuring hazardous voltages

(voltages above 30V ac rms, 42V ac peak and 60V dc).

Do not use the meter with any of the parts removed.

Do not use the meter near explosive gas, vapor, or dust.

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.

480403 V1.0 6/074

Meter Description

1. L1 test Lead input to meter

2. L3 test lead input to meter

3. L2 test lead input to meter

4. L1 status LED

5. Orientation symbol for non-

contact testing

6. L3 status LED

7. L2 status LED

8. Power ON status LED

9. ON button

10. Left/Right Clockwise/Counter-

Clockwise status LEDs

11. Test lead alligator clips

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. Press the ON/OFF button to turn the meter on.

4. L1, L2, and L3 indicators will illuminate for each phase connected,

respectively.

5. The clockwise and counter-clockwise arrows with the left/right ‘L’ or

‘R’ icons display the phase rotation direction (phase sequence) of

mains as connected.

6. To understand the status of a test, based on the condition of the

meter’s front panel LEDs , refer to the table printed on the meter:

Note: The rotational indicator LEDs illuminate even if one of the test

probes is connected to a neutral or ground conductor instead of one

of the mains phases.

480403 V1.0 6/075

Check Motor Turn Direction (contact method)

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 (alligator) probes to the three motor connections

(L1 to U, L2 to V, and L3 to W).

3. Press the ON/OFF button. The green ON indicator shows that the

instrument is ready for testing.

4. Turn the motor shaft half of a revolution towards the right.

5. The clockwise and counter-clockwise arrows with the left/right ‘L’

or ‘R’ icons display the orientation of the motor.

Check Motor Turn Direction (non-contact method)

1. Disconnect the test leads from the meter and from any other

devices under test.

2. Hold the meter close (one

inch or closer) to the motor,

parallel to the length of the

motor shaft.

3. The bottom of the meter

should face the drive shaft

and the back of the meter

should be flush with the motor

(refer to diagram at right).

Note: There is an orientation

symbol on the meter to assist.

4. Press the ON/OFF button. The green ON indicator shows that the

instrument is ready for testing.

5. The orientation of the motor is represented by the clockwise and

counter-clockwise arrows with the left/right ‘L’ or ‘R’ icons display.

Face the rear of the motor (meter will appear upside down) when

reading the status of the display LEDs.

Note: The meter will not operate with motors controlled by

frequency converters.

480403 V1.0 6/076



Support line (781) 890-7440

Technical Support: Extension 200; E-mail: support@extech.com

Repair & Returns: Extension 210; E-mail: repair@extech.com

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

Magnetic Field Detection

1. Hold the meter in the area under test.

2. A magnetic field is present if either the clockwise or the counter-

clockwise LED illuminates.

Battery replacement

The meter uses a 9V battery (supplied) as a power source. If the green

LED does not light when the ON/OFF button is pressed, replace the

battery.

1. Place the meter on a clean, flat, non-abrasive surface.

2. Loosen the rear bottom Phillips head screw to access the

battery compartment.

3. Lift the battery access door and replace the 9V battery observing

polarity.

4. Place the battery carefully in the compartment without crimping

the black and red battery connecting wire.

5. Close the access door and secure the screw.

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.

480403 V1.0 6/077

Specifications

Environmental Specifications

Operating Temperature 32 to 104oF (0 to 40oC)

Operating Humidity 15 to 85% relative humidity

Operating altitude 2000m

Pollution Degree 2

Approvals DIN / VDE 0411

IEC 61010

DIN / VDE 0413-7

Mechanical Specifications

Dimensions (H x W x D): 5.1 x 2.7 x 1.3”

(130 x69 x 32mm)

Weight 4.6 oz. (130g)

Safety Specifications

Electrical Safety Approvals IEC 61010/EN61010,

IEC 61557-7/EN 61557-7

Maximum Operating Voltage (Ume) 400 V

Protection Levels CAT lll, 300V to ground

Electrical Specifications

Battery type 9V battery

Current Consumption 20mA max.

Battery life One (1) year minimum

Nominal Voltage 120 to 400 VAC

Frequency Range (fn) 2 to 400Hz

Nominal Test current (in per phase) < 3.5mA

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