Textron HDE V-WATCH PRO Manuale di istruzioni

U.S. Patents 6,329,924 & D439,537.

Other Patents Pending.

Operating & Instruction Manual

V-WATCH

PERSONAL VOLTAGE DETECTOR

1475 Lakeside Drive • Waukegan, Illinois 60085 U.S.A. • 847.473.4980

fax 847.473.4981 • website: www.HDElectricCompany.com

GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

POINTS TO UNDERSTAND BEFORE PROCEEDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

HOW IT WOR S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

HOW TO WEAR IT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

WHEN AND HOW TO USE IT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

A WORD ABOUT ELECTRIC FIELDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

LIMITATIONS FOR USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

VWATCH MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

INSTRUCTIONS FOR USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1011

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

WARNING DISTANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1213

ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

LIMITATION OF WARRANTY AND LIABILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

For the latest V-Watch information

including product updates and technical

information, visit our website at

www.hdelectriccompany.com/vwatch.htm

V-WATCH

PERSONAL VOLTAGE DETECTOR

Operating & Instruction Manual

GENERAL DESCRIPTION

The V-Watch Personal Voltage Detectors detect the strong electric fields surrounding

high voltage conductors and power distribution equipment. It is a small pocket size

device worn on the outside of the clothing or other protective gear by users operating

near power lines or high voltage equipment. The V-Watch provides an extra level of

safety for personnel trained in the use and application of V-Watch working on or near

high voltage systems.

The V-Watch Personal Voltage Detector detects electric fields.

Make sure you understand these points before proceeding:

• Electric fields surround every energized AC conductor.

• The closer you are to a conductor, the stronger the field will be.

• Higher voltage means a stronger electric field and a greater V-Watch warning distance.

Lower voltage means a reduced warning distance.

• Electric fields are NOT blocked by plastics, dry wood or clothing.

• Electric fields ARE blocked by ANY conductor such as a metal cabinet or door, wet wood,

metal fences, green trees, a growing shrub or hedge and tall wet grass.

• The V-Watch will not find cables buried under the ground. The ground is a conductor

and will block electric fields.

• Insulation on a wire does not block the electric field and does not affect V-Watch

warning distances.

• Underground primary cables are both insulated AND shielded. The shield is a conductor,

is grounded, and will block the electric field.

• Molded cable terminators such as elbows are, like the cables they are installed on,

both insulated and shielded and will block electric fields.

• Your body will block electric fields. Wear the V-Watch front and center and do not

walk backwards.

• Do not use the V-Watch while holding it in your hand. Wrapping your fingers around

the V-Watch will block electric fields, preventing the V-Watch from working.

SAFETY

• Always use proper high voltage procedures, including personal protective equipment,

when working near or around high voltage equipment or conductors.

• Do not rely on the V-Watch as your sole source of high voltage detection. Risk of

electrocution is inherent in or around high voltage.

• Never contact high voltage with the V-Watch.

• Always use proper high voltage procedures for testing and grounding.

• Because the human body is a good electrical conductor, electric fields are distorted or

blocked by the body. Thus, positioning of the V-Watch on the body and its location

relative to the voltage source can have a large effect on its sensitivity to electric fields.

• Grounded equipment can appear to be live in close proximity to energized conductors.

• The V-Watch is not sensing electric fields when it is inside its closed carrying case.

WARNINGS

All V-Watch carrying cases are electrically shielded, therefore,

V-Watch does not work when inside its closed carrying case.

THE V-WATCH IS NOT FOR USE BELOW 2400 VOLTS AC.

The V-Watch will not detect DC voltage or stored charge such as in charged capacitors or

underground cable. When the V-Watch is inside its closed case, it will not detect or warn

of nearby high voltage. Always use proper high voltage procedures, including personal

protective equipment, when working near or around high voltage equipment or con-

ductors. Never contact high voltage with the V-Watch. Always use proper high voltage

procedures for testing and grounding. Do not rely on the V-Watch as your sole source

of high voltage detection. Risk of electrocution is inherent in or around high voltage.

HOW IT WOR S

The V-Watch works by sensing the presence of the electric field surrounding anything that

potentially conducts high voltage electricity and sounds an alarm. The V-Watch measures

the strength of the electric field; a higher voltage or stronger field will cause the V-Watch

to alarm from a greater distance.

The V-Watch emits a series of loud beeps and flashing lights when an electric field is

first detected. The beeps and flashing lights increase in frequency as the user approaches

the source of the high voltage electric field. A steady tone indicates very close proximity

to high voltage and the need for extreme caution. This variable beeping rate helps the

user to determine if they are approaching the high voltage source or moving away

from it to safety.

The V-Watch has a self-test button to verify battery power and proper functioning of the

device. The V-Watch will also sound its alarm to warn the user of a low battery. Whenever

the V-Watch is being used, it is always on, checking for the presence of high voltage electric

fields. A standard 9-volt lithium or alkaline battery powers the unit for about one year.

For more information, refer to the A Word About Electric Fields section on page 7.

HOW TO WEAR IT

The V-Watch should always be worn mid-torso on the front of the body and face in the

direction of movement. Because V-Watch is sensitive to electric fields in front of the user,

and to a lesser extent on either side, proper positioning is important.

The V-Watch can be worn in three different ways:

1. When using V-Watch with the C-10 Case Lanyard, fully

unzip the carrying case so that the case opens downward

and the V-Watch is now facing forward. Extend the

lanyard from the top of the case and hang it around

your neck. Adjust the lanyard so the V-Watch is located

at mid-torso and facing forward.

2. When using the V-Watch with the VW-LAN Lanyard,

remove the V-Watch from its case and securely affix it

using the metal clip on the back of the V-Watch to the

hanging loop on the front of the lanyard. Hang the

lanyard around your neck and adjust by using the Velcro

so the V-Watch is located at mid-torso and facing forward.

3. The last option is using the V-Watch with the metal

mounting clip and securing it on clothing or other

devices such as fall protection gear so it is located

at mid-torso and facing forward.

WHEN AND HOW TO USE IT

The V-Watch can be used anytime, anyplace and for any

reason. The decision of when to use V-Watch is made by

the user and by your company’s safety and work practices.

When used properly, the V-Watch can provide an additional

warning to users exposed or working around energized

high voltage electricity and equipment. Awareness of the

presence of a high voltage electric field allows the user

to take additional precautions against accidental contact

with energized equipment. The variable frequency beeping

gives the user an indication of the source and direction of

the high voltage.

The V-Watch provides an early warning of the proximity

of potentially hazardous high voltage electricity and

equipment. The V-Watch will start to beep slowly as an

electric field is first detected and will then beep faster,

increasing to a steady tone if the user continues to

approach the source of the high voltage electric field.

A steady tone indicates the need for extreme caution,

as the source of the high voltage electric field is close.

A WORD ABOUT ELECTRIC FIELDS

Electric fields surround every energized

conductor. The V-Watch measures the strength

of these electric fields to warn the user when

fields are strong enough to indicate the

presence of nearby high voltage conductors.

A downed power line is a typical hazardous

situation where the V-Watch can provide

a warning. This power line lying

on the ground sets up a high

voltage field surrounding the

conductor that the V-Watch

will sense and warn the user.

The V-Watch is designed to be worn

on the body and it measures the

electrical fields typically found

in close proximity to the body.

Because the human body is a good

electrical conductor, electric fields

are distorted or even blocked by

the body. Thus, positioning of

the V-Watch on the body and its

location relative to the voltage

source can have a large effect

on its sensitivity to electric fields.

When properly worn on the front

of the body, as shown, and with the

user facing a waist height energized

conductor, such as a terminal on a

pad mount transformer or switch, the

V-Watch will start to alarm about

10 feet from a 7kV conductor. If the

user were to approach this energized

terminal by backing up to it, the

warning distance may be reduced

to 3 feet or less.

Adequate

Warning

Distance

If the V-Watch user bends over from the

waist to reach towards an energized high

voltage terminal, the warning distance

may also be significantly reduced. In

both cases, the high conductivity

of the body acts as a shield to

conduct the electric field

around the V-Watch.

The V-Watch measures only

the strength of the electric field.

It cannot directly measure distance

to the source of the electric field

such as an energized conductor. The

higher the voltage, the stronger the

field and the greater the alarm distance. The reverse is also true; the V-Watch may alarm

due to the very close proximity of low voltage when the user walks past a typical factory

machine such as a running drill press, an office computer terminal or a desk lamp. The

V-Watch may even alarm if it is placed up against a typical 120 volt wall outlet.

Electrically conductive objects located underneath power lines can appear to the V-Watch

to be live. A metal fence or a growing hedge can cause a distortion of the electric field

under these lines and result in high electric field strength near the ground. The V-Watch

will provide an early warning of high electric fields, but not all fields are directly caused by

nearby energized objects. To prevent the V-Watch from issuing too many false alarms, it

should not be used or worn in typical office or

factory environments where all the equipment

is low voltage and there is no danger of

contacting energized high

voltage conductors.

As an additional protection against

false alarms from transient voltages,

the V-Watch has a built-in time delay

and may take up to one second to

emit an alarm warning of high voltage.

For this reason, a user running towards

an energized high voltage source may

find the warning distance reduced.

Fence May

Appear

To Be "Live"

Reduced

Warning

Distance

Legend

Warning Distance - feet

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Conductor

Height

8ft.

3 ft.

2 ft.

3 in.

First warning level - slow beep

Second warning level - medium beep

Third warning level - continuous beep

Each grid square is one foot.

Test data obtained using 7.2kV line to ground conductor

LIMITATIONS FOR USE

WARNING: Conductors lying

on the ground or very close

to it will result in reduced

warning distances.

3 ft.

2ft.

1ft.

/2ft.

10% 20% 30% 40% 50%

Warning Distance Reduction

V-WatchWarning Distance

at First Beep

Conductors of different phases in close proximity will also reduce warning distances due

to field cancellation effects.

Wearing the V-Watch in environments such as substations or under transmission lines may

result in the V-Watch alarming continuously.

Be aware of unique conditions that may be present around three phase delta

systems. Unlike grounded Y systems, a single phase of a delta system can become

grounded without causing an outage and the delta system can continue to operate with

this grounded phase. If this phase is grounded as a result of a downed conductor or other

storm damage, it may be grounded only temporarily and could become reenergized if

moved or disturbed.The V-Watch will not detect any grounded conductor, whether

it is a grounded delta phase conductor, a guy wire or a pole ground.

WARNING: Treat all conductors as live unless or until there

is a visible break from a live source and a ground is in place.

V-WATCH MODELS

There are two models available of the V-Watch Personal

Voltage Detector. Both feature audible and visual alarms,

a low battery indicator, built-in self-test, field replaceable

9V battery, ruggedized housing, belt clip and carrying case.

The V-Watch Pro includes all of the same features as the

V-Watch, but also includes a Mute button which temporarily

silences the beeper. The Mute feature may be used when

it is necessary to work for a prolonged period in or around

high voltage electricity while wearing the V-Watch.

INSTRUCTIONS FOR USE

THE V-WATCH IS NOT FOR USE BELOW 2400 VOLTS AC.

Before using V-Watch, read the instruction manual, review product labeling and both sides

of the instruction card located in the V-Watch case. Do not proceed if the instruction card

is missing. Make certain that the V-Watch is equipped with a 9-volt battery. Press the Test

button on the front of the V-Watch before and after each use. The test circuitry generates

an internal voltage which the V-Watch then detects by turning on the lights and sounding

the beeper. DO NOT USE the V-Watch if the Test button fails to activate the lights and

beeper. Remove from service and contact the factory to arrange for repair.

CAUTION – Press and hold the V-Watch Test button before and peri-

odically during as well as after each use to ensure proper operation.

The V-Watch should always be worn facing any potential high voltage electricity. Wear the

V-Watch in the center of the front of your body as shown in the illustration and always

wear the V-Watch in the direction of movement or work. Do

not walk backwards or sideways when wearing the V-Watch

as it will not detect high voltage behind you or as effectively

to the sides. Wear the V-Watch on the outside of all clothing.

eep it away from all other large metal objects such as

belt buckles, tool belts or electronic items such as radios,

pagers, cell phones or any other electrical devices which

may interfere with the V-Watch.

The V-Watch will emit a series of beeps and flashing lights

when it detects high voltage. It will beep and flash faster

as it gets closer to high voltage. Very rapid beeping and

flashing or a steady tone and lights indicates close proximity

to high voltage and requires extreme caution. For more

details, refer to V-Watch Warning Distances beginning

on page 12.

WeAR

the

V-Watch

in this

area

Instruction Cards - Front & Back

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