B&K Precision 302 User Manual

Instruction Manual

Model 302 Phase and Motor Rotation Meter

INDEX PAGE

SAFETY RULES .................................................... 01

SAFETY CHECKS ................................................. 02

DON'T TOUCH ...................................................... 02

GENERAL DESCRIPTION .................................... 03

BRIEF PRODUCT DESCRIPTION ........................ 04

OPERATING INSTRUCTIONS .............................. 04-05

FRONT PANEL LAYOUT ....................................... 06

PRINCIPLE OF HOW IT WORK ............................ 07

PREPARATION FOR USE ..................................... 08

REPLACING THE BATTERIES .............................. 08

SPECIFICATIONS ................................................. 09

LIMITED ONE-YEAR WARRANTY

SERVICE INFORMATION

...................................... 11

........................ 10

SAFETY RULES

CAUTION

This tester has been designed with your safety in mind. However,
no design can completely protect against incorrect use. Electrical
circuits can be dangerous and/or lethal when lack of caution or poor
safety practices are used.

Do not carry out field measurements on either the power system
grounding, during periods of forecast lightning activity, in areas that
encompass the station being measured or of the power network
connected to the station being measured. In the event that lightning
occurs, stop all testing and isolate any temporarily installed test
spikes.

Preparations for testing of power system grounding can leave
personnel vulnerable to exposure caused by faults at or fed from the
system under test, transferred potentials from remote test grounds,
and inadvertent line energisations.

While the probability of the occurrence of one of these events is low,
personnel safety will, nevertheless, be enhanced by the following:

When working near high tension systems rubber gloves and shoes
should be worn.
Work on clean, dry crushed rock or an insulating blanket.
Avoid bare hand to hand contact between the tester and extended
test leads.

RISK OF ELECTRIC

SHOCK

When using the tester with test leads, ensure that they are safe and
properly authorized

Disconnect the tester from any external circuit when changing the
batteries.

CAUTION

Follow the instructions in the Manual for every measurement. Read
and understand the general instructions before attempting to use
this tester

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READ THE MANUAL

SAFETY CHECK

Before using the tester check the condition of the batteries. This is
done by switching the tester ON.
If the BAT OK led does not light up, the battery need replacing.
Battery and fuse replacement are described later in this user's
manual..

When changing the battery, fuses, or removing the cover to access
the internal circuitry, always disconnect the test leads.

When replacing the fuse use only the type specified, 5 x 20mm,
200mA, 250V fuse, and insert correctly into the fuse holder.

Double check the switch setting, and lead connections before
making measurements.

DON'T TOUCH

Don't touch exposed wiring, connections or other "Live" parts of an
electrical circuit. If in doubt, check the circuit first for voltage before
touching it.

Do not use cracked of broken test leads.

THIS INSTRUMENT SHOULD ONLY BE USED BY A COMPETENT,

SUITABLY TRAINED PERSON.

REMEMBER

SAFETY IS NO ACCIDENT

CAUTION RISK OF ELECTRIC SHOCK

CAUTION READ THE MANUAL

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GENERAL DESCRIPTION

This Test Instrument is a 3 Phases Presence and Rotation Indicator
combined with a 3 Phases Motor Rotation Tester.

It can be utilized on a 3 Phase Powered System (the supply side)
or on a Three Phases Unpowered Motor (the load side) without
having to worry about damage to the tester.

When utilized on a 3 Phase Powered System, the instrument is
then utilized as a 3 Phases Presence and Rotation Indicator.

When utilized on a Three Phases Unpowered Motor, the
instrument is then utilized as a 3 Phases Motor Rotation Tester.

When utilized on a 3 Phases Powered System, this instrument is a
rotary field indication instrument which display all three phases by
lighting up it's corresponding Lamp. It display the rotation
(clockwise or anti-clockwise) on a LED.

When utilized on a 3 Phases Unpowered Motor, it is also possible to
determine the motor connections U, V, W without a live circuit to
avoid subsequent damages of e.g. pumps to reversed motor rotation.
It display the rotation (clockwise or anti-clockwise) on a LED.

This instrument represents the quickest and easiest way for
servicing, repairing and electrical maintenance of 3 phase rotating
machinery.

With this equipment, you can, before connecting Load to Supply:

On the supply side;

Quickly verify the presence of the three Phases on a 3
Phases Power System.
Confirm the Phase Rotation on a Powered 3 Phase System.

On the Motor Side (Load);

Confirm the Phase Rotation on a unpowered 3 Phase Motor 3
Phases Alternator.
Confirm that each winding is connected to the terminals of the
Motor, when the rotation Leds light up.

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