Extech Instruments 480403 User Manual

480403 V1.0 6/07 2
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.

Extech Instruments 480403 Specifications

Operating Environment

operating temperature	32 to 104°F (0 to 40°C)
operating humidity	15 to 85% relative humidity
operating altitude	2000 m

Power

battery type	9V battery
current consumption	20 mA max
battery life	One year minimum

Electrical Specifications

nominal voltage	120 to 400 VAC
frequency range	2 to 400 Hz
nominal test current per phase	< 3.5 mA

Weight and Dimensions

dimensions	5.1 x 2.7 x 1.3 inches (130 x 69 x 32 mm)
weight	4.6 oz (130 g)
maximum operating voltage	400 V