Besantek BST-HVD21 User manual

Non-Contact
High Voltage Detector
IP65
BST-HVD21
INSTRUCTION MANUAL

INDEX
1. Safety Rules........................................
2. General Description.............................
3. Low Voltage Testing.............................
4. Instrument Layout................................
5. Preparation for Use.............................
6. Checking and Proong .......................
7. Typical Uses........................................
8. Broken Wires in Cables ......................
9. High Voltage Testing............................
10. Faults (Open) Cables.........................
11. Limitations of the Non-contact High
Voltage Detector ...............................
12. Changing Batteries ...........................
13. Specications....................................
14. Limited Warranty................................
Caution, risk of electric shock.
Caution, refer to the user manual.
Page
1-2
2-3
3
4
5
5
6
6
6-7
8
8-9
10
11-12
13-14

-1-
1. Safety Rules
The Non-contact high 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. The following
rules should reduce the danger:
˙Read the user manual carefully and completely before
using the Non-contact high voltage detector. 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 Non-contact high voltage detector.
˙The Non-contact high voltage detector must never be
in physical contact with any conductor higher than
1kV. This is a proximity detector, not a detector which
works by contact.
˙Always use a ber glass rod or any authorized stick.
˙A high voltage test is carried out with the Non-contact
high voltage detector attached to a hot stick.
˙Verify the rotary switch setting before measuring.
Make sure it is on the correct setting for your
application.
˙Always check that the Non-contact high voltage
detector is working before and after the test.
˙Do not touch any exposed wiring, connections, or
other "live" parts of an electrical circuit.

-2-
This instrument should only be used by a competent,
suitably trained person who understands this test
procedure fully. Personnel working with high voltage
Should be trained regularly.
2. General Description
The Non-contact high voltage detector is a new water-
proof design tool for checking the presence of AC high
voltages and low voltages.
Protection class : IP65.
The Non-contact high voltage detector consists of an
internal pickup sensor plate, a rotary switch as sensitivity
selector, a sound annunciator (high pitch, high power
buzzer) and 3 LED indicators (high bright LEDs) in a
circle for easier viewing by users in any directions. This
provides a 360° LED indication.
The Non-contact high voltage detector detects AC
voltages using the sensor plate. The sensor plate collects
part of the radiated electric eld (V/M).
The electric eld is seen by the internal circuitry and
triggers the input of a CMOS integrated circuit. The
integrated circuit charges a capacitor via a diode. Once
that capacitor reaches a certain level, the buzzer and the
3 LED indicators are turned on.

-3-
The trigger level is xed (CMOS logical level change).
The "Test" inserts a voltage on the sensor plate, just
like if the sensor would pick up a voltage. The Non-
contact high voltage detector allows identication of AC
voltages. The enclosure is made out of industrial grade
polyurethane. The enclosure can be attached to a hot
stick. The small cylinder part of the Non-contact high
voltage detector ts into most hot stick adapter.
3. Low Voltage Testing
The Non-contact high voltage detector works by
proximity. Physical contact with electrical conductors
is not necessary when testing for live lines. Its
sensor senses the radiated eld which surrounds live
conductors. It is recommended not to touch high voltage
wires with the Non-contact high voltage detector.
Radiated eld strength increases with voltage and
decreases quickly with distance or earth shielding. The
radiated eld from a cable of closely bunched conductors
supplied by three phase power, tends to cancel (See
"Limitations of the Non-contact high voltage
detector" on page 8).
Detecting distance of a 220Vac single live wire is about
10cm.

-4-
4. Instrument Layout
①LED indicators :
High bright low current LEDs triggered on voltage
detection.
②Rotary selector with the settings listed below :
˙OFF – Turn the pick-up sensor off
˙Test – Check if the entire circuitry is working
˙240V, 4.2kV, 35kV, 69kV, 115kV, 230kV, 345kV, 500kV
③Buzzer :
High noise level buzzer triggered on voltage detection.
④Battery Holder
⑤Adapter end :
The adapter end connection for hot stick.
⑤
④
①
①
①
③
②

-5-
5. Preparation for Use
When unpacked, the Non-contact high voltage detector
should be inspected for any visible signs of damage,
and the preliminary checks described in the user manual
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 three "C" type batteries.
6. Checking And Proong
Switch the sensitivity to "TEST". The buzzer of the Non-
contact high voltage detector should beep and the 3 LED
indicators should light.
This indicates that the Non-contact high voltage detector
is operational.
Verify the working of this unit by selecting 240Vac and
place the dome against a low voltage live conductor or
rub the dome with a cloth or against an item of clothing
as this generates a static DC which triggers the detection
of circuit.
The 3 LED indicators and the buzzer should go on as if
a live wire is being approached.
Approaching the dome near a Computer screen or a TV
screen (not liquid crystal display type) should also trigger
the Non-contact high voltage detector while on
the 240V selection.

-6-
7. Typical Uses
˙Identify and check live cables.
˙Check and detect live high voltage cables (using
extension hot stick).
˙Find fault in exible cables.
˙Check earth equipment.
˙Trace live wires.
˙Check high frequency radiation.
˙Detect residual or induced voltages.
8. Broken Wires In Cables
Faults in damaged exible cables are found by applying
low voltage to each conductor. Earthing the remainder
(the wires that do not need to be traced. Do not earth
the live wire, so that they can be detected by the Non-
contact high voltage detector.) and moving the tester
along the cable until the change in condition is obtained.
(Flexible cables, as used in mining
and building industries, are readily repairable when the
break in the cable is located).
9. High Voltage Testing
The rotary switch (attenuator) is used to identify and
differentiate various HV live cables. The Non-contact
high voltage detector must be used in conjunction
with a long and insulating rod or hot stick when
measuring high voltage (kV).
The Non-contact high voltage detector should never be
in contact with live conductors. Live conductors emit
a radiated eld that can be detected by the detector's
sensor.

-7-
※When working under high voltage systems, please
wear the insulation gloves and rubber shoes. Do not
touch live conductors with this Non-contact high
voltage detector.
An increase in voltage means an increase in its radiated
eld strength. The radiated eld strength quickly
decreases with distance and/or ground shielding. The
radiated eld from a cable where conductors supplying
3-phase power are close together tend to cancel out.
The rotary switch, or attenuator, is used to identify and
differentiate various HV live cables.
※The detector should only be used in conjunction
with an insulated rod or hot stick when measuring
high voltage.
Check to see if the Non-contact high voltage detector is
in good operating condition. Select the appropriate test
range. It is advised that you start with a lower test range
setting than the actual working voltage. Then perform the
test again with the higher settings. The user may also opt
to use a lower setting to check for lower voltages on a
conductor.
With the hot stick, gradually move the Non-contact high
voltage detector towards the live conductor until its
warning signal is triggered. Again, do not touch the live
conductor with the Non-contact high voltage detector.

-8-
10. Faults (Open) Cables
The Non-contact high voltage detector is capable of
detecting faults in certain exible cables. For a cable
that is still energized, set the detector's sensitivity so that
it triggers. Move the detector along the cable until you
notice a change. An audible sound and LED will be on
when the sensor is on the supply side of the open and
will turn off when on the other side.
11. Limitations of the Non-contact High Voltage
Detector
It is recommended that this Non-contact high voltage
detector is not used in HV yards of mixed voltages. In
the presence of mixed voltages, the tester can become
unreliable.

˙The ideal
detection angle

-9-

˙For nding a break of cable
Problems can arise when the tertiary circuit of a 275/
133/11kV transformer is tested. The electric eld of the
HV and MV 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. Users should be
aware of it. The tester can pick up adjacent circuit to the
one being tested and indicates the wrong information to
the user.

-10-
˙Check and detect live high voltage
cables(using extension hot stick.)
12. Changing Batteries
The Non-contact high voltage detector uses 3 x 1.5V "C"
type batteries. Open the battery holder (turn counter-
clockwise) to remove the batteries. Ensure the polarity is
correct. Then install the new batteries.

-11-
13. Specications
˙Operating Temperature : -10°C~50°C
˙Storage Temperature : -20°C~60°C
˙Humidity : 85% R.H. @ 40°C
˙Case Height : 265mm
˙Case Width : 117mm
˙Weight : Approx. 600g(Batteries included)
˙Power Source : 1.5V "C" x 3 Alkaline Batteries
˙Safety Standard :
EN 61326-1 CISPR 11
EN 61000-4-2
EN 61000-4-3
EN 61000-4-8
˙Accessories :
Instruction manual
Disconnect hook
Fuse extractor head
Carry case
Batteries

-12-
˙Carry case
˙Disconnect hook
˙Fuse extractor head

-13-
14. Limited Warranty
We warrant the product to be free from defective
materials or factory workmanship. We agree to repair
or replace this product with no charge for parts and
service, if used under normal operation and is a result
of manufacturer defects. If we are unable to repair or
replace this product, we will make a full refund of the
purchase price. Consult the user 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
purchase.
This warranty does not apply to any of our products
which have been repaired or altered by unauthorized
persons in any way. In our sole judgement, if the stability
or reliability of products are injured, or which have been
subject to misuse, abuse, misapplication, negligence
or accident, or the serial numbers have been altered,
defaced or removed, this warranty will not apply.
All warranties implied by law are hereby limited to a
period of 12 months, and the provisions of the warranty
are expressed 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 its user, his
employees, or others, and the remedies provided by this
warranty are expressed in lieu of any other liability we
may have included in incidental or consequential
damages.

-14-
We reserve the right to discontinue models at any time,
or change specication, price or design, without notice
and without incurring any obligation.