Besantek BST-HVD7 User manual

BST-HVD7
SAFETY PERSONAL AC VOLTAGE
(50 or 60Hz) PROXIMITY DETECTOR
INSTRUCTION MANUAL

Index
1.Safety rules ......................................................
2.General description ..........................................
3.Principle of how it works ...................................
4.Check it and get it going ...................................
a.Check the working of the voltage detector ....
b.Low battery detection and indication .............
c.Sensitivity ......................................................
d.Priority of functions - display and sound alerts
5.Low voltage testing ...........................................
6.For best results .................................................
7.Front panel layout .............................................
8.Back of voltage detector layout ........................
9.Preparation for use ...........................................
10.Checking and proong the tester.....................
11.Typical uses ....................................................
12.Broken wires in cables ....................................
13.Non contact advise .........................................
14.Limitations of the voltage detector ..................
15.Replacing the battery ......................................
16.Laboratory test results ....................................
17.Specications .................................................
18.Limited warranty .............................................
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-1-
1. Safety rules
The Personal Safety voltage detector has been
designed with safety in mind. However, no design can
completely protect against incorrect use.
Electrical circuits are dangerous and lethal
through lack of caution or poor safety practice.
Please follow safety rules to reduce danger and
practice safety.
●Read the User's manual carefully and completely
before using the tester. Fully understand the
instructions before using this product. Follow the
instructions for every test. Take all the necessary
precautions. Do not exceed the limits of this
instrument.
●The voltage detector should never be in physical
contact with any conductor higher than 1kV. This is
a proximity detector, not a detector which works
by contact. As such, contact should be avoided.
●Always check that the voltage detector is working
correctly before and after the test (press both push
button to verify It's working perfectly before using
the testers to detect voltage and after detection).
●Do not touch any exposed wiring, connections or
other "Live" parts of an electrical circuit.
●This instrument should only be used by a
competent, suitably trained person which
understands fully this test procedure. Personal
working with High Voltage should be trained
regularly. Use Protective gear.
Caution, risk of electric shock.
Caution, refer to the user's manual.

-2-
2. General description
The voltage detector consists of an internal pickup
AC sensor plate, a test (oscillator) and diagnostic
circuit, an adjustable threshold comparator, a sound
annunciator (buzzer), a visual indicator (super high
bright led) and a 9V battery, all enclosed into the
robust "beeper" style case.
The enclosure has a built-in clip to be able to be
attached on the outer garments / external clothing or
belt.
3. Principle of how it works
The voltage detector detects AC voltages using it's
internal AC sensor plate. The AC sensor plate picks
up part of the radiated electric eld in volts per meter
(V/M).
The electric eld is amplied and processed by the
internal circuitry and once the processed signal is
above the threshold, triggers the input of a integrated
circuit, which start the
oscillators for the buzzer
and led. The Buzzer beeps
and Led lits intermittently at
a rate of 2 beeps/ash per
second. The "Self-test"
diagnostic is actioned by
depressing simultaneously
both push button on the front
panel. The battery monitoring
is always ON.
Please see the priority of alert
on the front panel.

-3-
4. Check it and get it going
After inserting the battery, close the cover. The
voltage detector will be ON automatically.
a. Check the working of voltage detector
Once the battery has been inserted, wait for a few
seconds. If no beep and no ash occurs, press
simultaneously the 2 push buttons.
While the 2 push buttons are pressed, the internal
50/60Hz oscillator will start oscillating (generates
test signal) and this signal will be connected to the
sensor.
While pressing the 2 push buttons, the buzzer and
the led will function at a rate of about 2 beep/ash
per second.
That indicate proper operation of the tester.
Release the push buttons, and wait for about 30
seconds. If there are no other beep/ash, that
mean everything is correct.
b. Low Battery detection and indication
When the battery becomes to low, a beep/ash
will happen about every 5 seconds, Replace the
battery immediately.
c. Sensitivity
Covering the voltage detector with any kind of
obstructive material could affect its sensitivity. It
is advised to wear it outside clothing, clipped on
the belt or on the pocket. Please note that the
enclosure is static sensitive and can become
charged and thus alarm may be triggered by
excessive static.

-4-
d. Priority of functions - display and sound alerts
(1) = Voltage Detected
= First Priority
= the tester beep and ash twice per second.
(2) = Simulated Test = Voltage Detected
= Second Priority (identical to 1St priority)
= the tester beeps and ashes twice per second.
(3) = Battery Indication
= Third Priority
= the tester beeps and.every 5 seconds.

-5-
5. Low voltage testing
Physical contact with electrical conductors is not
necessary when testing for Live Lines proximity.
This tester works by proximity.
Its sensor senses the radiated eld which surrounds
live conductors.
It is recommended not to touch High Voltage wires
with the voltage detector.
Radiated eld strength increases with voltage and
decreases quickly with distance or earth shielding.
Detecting distance of a 240Vac single Live Wire is
about 10cm.
6. For best results
The voltage detector should always be WORN ON
THE OUTSIDE of any clothing.
For example, clipped onto the pocket, belt or on the
vehicle's mirror.
The voltage detector could be sensitive to static
build-up and may become charged. In this case, this
could trigger the alarm.
The voltage detector should be worn FACING THE
DIRECTION OF WALKING TOWARD THE SOURCE.
WHILE FACING THE SOURCE, THIS WOULD BE
THE FRONT OF YOUR BODY ( use the breast
pocket ).
Always ensure that the alarm can be heard and seen
(in case of noisy environment, check again the alarm
sound before using to ensure you can be alarmed)

-6-
7. Front panel layout
SUPER HIGH
BRIGHT LED
BUZZER
TEST
OSCILLATOR
SWITCH
TEST SIGNAL
FROM
OSCILLATOR
TO SENSOR PLATE

-7-
8. Back of voltage detector layout
BATTERY HOLDER
SUNRISE / HOT STICK ADAPTOR
STRAP CONNECTOR
STRAP
POCKET AND BELT CLIP

-8-
9. Preparation for use
When unpacked, the tester should be inspected for
any visible signs of damage, and the preliminary
checks described (depress both push button for
proong the unit) should be performed to ensure that
it is operating correctly.
If there is any sign of damage, or if the instrument
does not operate correctly, return it to your nearest
supplier.
This instrument is powered by one 9V type battery.
Use alkaline for best results.
10. Checking and proong the tester
Depress both push button simultaneously. The Buzzer
will beep and the LED will ash twice per second if
everything is correct with the proong of the voltage
detector.
11. Typical uses
Workers Safety.
Emergency services protection (reman, evacuation
personal, police, etc...)
Safely identify HV source while approaching it.
The user's has the voltage detector clipped on his
breast pocket while working/walking in a electrical
environment. The voltage detector will alert the user
of any HV source near by and therefore the user will
be able to take protective action before being close to
the H.V. Identify and check AC live cables.
Check and Detect Live High Voltage Cables.
Neon lightning servicing. Tracing live wires.
Detecting of residual or induced voltages.

-9-
12. Broken wires in cables
Faults in damaged exible cables are found by
applying low voltage to each conductor in turn,
earthing the remainder and moving the tester along
the cable until the change in condition is obtained
(exible cables as used in mining and building
industries are readily repairable when the break in the
cable is located).
13. Non contact advise
It is advised that the tester should not come into
contact with cables (kV) as this tester is merely an
Non-Contact A.C. Proximity Tester.
This advise is particularly useful to protect users
which do not respect protection and safety rules and
who do not wear protective gear.
Never work or be alone in the proximity of high
voltage.
14. Limitations on the voltage detector
It is recommended that this tester is not used in
H.V. Yards of mixed voltages. In the presence of
mixed voltages, the user will not be able to pin
point exactly which cable is the source of H.V..
This tester has been designed to be used as a
personal safety proximity voltage detector alarm.
This is not a measuring instrument.

-10-
Problems can be arose when the tertiary circuit of
a 275/133/11kV transformer is tested. The electric
eld of the H.V. And M.V. Bus bars can trigger the
detector when it is about 3m above the ground
(this is common with most of the electric eld
voltage detectors and the users should be aware
of it).
The tester could pick up adjacent circuit to
the one being tested and indicates the wrong
information to the user.
15. Replacing the battery
The voltage detector
has been designed to
have a super low current
consumption.
One alkaline battery could
last up to one year or even
more (Depending on the
battery energy).
Once the low battery alarm
is announced ( beeps and
ashes every 5 seconds), the
battery should be replaced
Immediately.
The voltage detector uses
one 9V battery.
Remove the battery cover.
Ensure polarity is respected and replace with a new
battery. (Photograph
shows cover removed and new
battery inserted.

-11-
16. Laboratory test results
Test Results
Test Instrument: 100kVAC High Voltage generator
Test Temperature: 25°C
Relative Humidity: 65%
Accuracy: ±20%
Source Angle Distance
240V 90° 5cm
1.0kV 90° 100cm
2.2kV 90° 130cm
3.3kV 90° 155cm
6.6kV 90° 210cm

-12-
17. Specications
ELECTRICAL
Detecting Range
Detection voltage : 240V~50kV
Static can also trigger the voltage detector. Ensure
the voltage detector is not reacting to static but AC.
Operating Temperature: -15°C to + 55°C
Storage Temperature: -20°C to + 65°C
Humidity: 93% RH @ 40°C
Dimensions: 115(L)x67(W)x30(H)mm
Weight: 146g. (battery included)
Power Source: 9V battery x1
Safety Standard:
EN 61326 EN 55011 EN 61000-4-2 EN 61000-4-3
18. Limited warranty
We warrant the product manufactured by us to be free
from defective material or factory workmanship and
agree to repair or replace this product which, under
normal use and service, disclose the defect to be the
fault of our manufacturing, with no charge for parts
and service. If we are unable to repair or replace this
product, we will make a full refund of the purchase
price.

-13-
Consult the user's manual for proper instruction
regarding use of this instrument.
Our obligation under this warranty is limited to
repairing, replacing or making refund of this test
equipment which proves to be defective within 12
months from the date of original purchase.
This warranty does not apply to any of our products
which have been repaired or altered by unauthorized
persons in any way so as, in our sole judgement, to
injure their stability or reliability, or which have been
subject to misuse, abuse, misapplication, negligence
or accident or which have had the serial numbers
altered, defaced or removed.
Accessories, not of our manufacture used with this
product, are not covered by this warranty.
All warranties implied by law are hereby limited to
a period of 12 months, and the provisions of the
warranty are expressly in lieu of any other warranties
expressed or implied.
The purchaser agrees to assume all liability for any
damages or bodily injury which may result from the
use or misuse of the product by the purchaser, or
it's user, his employees, or others, and the remedies
provided for in this warranty are expressly in lieu of
any other liability we may have including incidental or
consequential damages.
We reserve the right to discontinue models at any
time, or change specication, price or design, without
notice and without incurring any obligation.