238

Diversified Electronics

800.727.5646

atcdiversified.com

Diversified Electronics

800.727.5646

atcdiversified.com

Phase Rotation Tester

SUPPLY VOLTAGE

20 to 600 VAC, 50/60/400 Hz

SENSOR VOLTAGE

12 VDC

ABSOLUTE

700 VAC, Phase-to-Phase

MAXIMUM

VOLTAGE

BATTERY

9V, Included

ISOLATION

3000 VAC, Leads to User

ROTATION/

Red

Phase Loss/No Voltage

SEQUENCE

Yellow

Low Battery

OPERATOR

Momentary Test Button

CONTROL

INDICATORS

Green

Normal Rotation/Sequence

Red

Reverse

TEMPERATURE

Operate

32° to 113°F (0° to +45°C)

Storage

-40° to 140°F (–40° to +60°C)

RESPONSE TIMES

100ms

LEADS

18", color coded, battery clip type

DIMENSIONS

3.75 x 2.625 x 1.5 inches

WEIGHT

NET: 4.16 oz

SPECIFICATIONS

OPERATION

DIMENSIONS (INCHES)

MODEL NUMBER

DESCRIPTION

PRT-100

Phase Rotation Test

ORDERING INFORMATION

The PRT-100 is a hand-held tester that takes the guesswork out of con-

necting a 3-phase motor. The direction of rotation of a motor depends

on phase sequence of the power line connections. If the sequence is

reversed, the motor will run in the wrong direction, possibly damaging

the equipment connected to the motor. The PRT-100 identifies the leads

of a three-phase motor and detects the sequence of a three-phase

power line. Once the motor and line leads are properly identified, the

motor can be wired so that it turns in the desired direction on the first

try. The unit also detects phase loss and no voltage conditions.

To identify the leads of a three-phase line, connect the tester to the en-

ergized line and press the test button. Either the normal or reverse LED

will glow. If the reverse LED glows, switch two leads and press the test

button again. The normal LED should now glow. Label the three-phase

line conductors according to the marking on the tester. If the loss LED

glows, a phase loss or no voltage condition exists, and the normal and

reverse LEDs are meaningless. Correct the loss condition and retest.

To identify the leads of a three-phase motor, connect the tester to the

de-energized motor, turn the rotor in the desired direction, and press

the test button. If the reverse LED glows, switch two leads and repeat.

The normal LED should now glow. Label the motor leads according to the

markings on the tester. NOTE: the loss LED will glow during motor testing.

This is normal since the turning motor generates less than 20 volts.

De-energize the three-phase line and connect the line conductors to the

matching motor leads. When the motor is energized, it will run in the

desired direction.