AEMC 275HVD User manual

WITH AEMC
®
INSTRUMENTS
HIGH VOLTAGE DETECTOR
DECTOR DE ALTA TENSIÓN
ENGLISH
User Manual
ESPAÑOL
Manual de Usuario
Non-Contact High Voltage Detector
Model 275HVD
Detector de Alta Tensión Sin Contacto
Modelo 275HVD

Copyright©Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments. All rights reserved.
No part of this documentation may be reproduced in any form or by any means (including electronic
storage and retrieval or translation into any other language) without prior agreement and written consent
from Chauvin Arnoux®, Inc., as governed by United States and International copyright laws.
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
15 Faraday Drive • Dover, NH 03820 USA
Tel: [phone] or [phone] • Fax: [phone]
This documentation is provided as is, without warranty of any kind, express, implied, or otherwise.
Chauvin Arnoux®, Inc. has made every reasonable e󰀨ort to ensure that this documentation is accurate;
but does not warrant the accuracy or completeness of the text, graphics, or other information contained
in this documentation. Chauvin Arnoux®, Inc. shall not be liable for any damages, special, indirect,
incidental, or inconsequential; including (but not limited to) physical, emotional or monetary damages
due to lost revenues or lost prots that may result from the use of this documentation, whether or not the
user of the documentation has been advised of the possibility of such damages.

Copyright©Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments. Todos los derechos reservados.
Prohibida la reproducción total o parcial de este documento de cualquier forma o medio (incluyendo
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internacionales.
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
15 Faraday Drive • Dover, NH 03820 USA
Teléfono: [phone] • Fax: [phone]
Este documento se proporciona en su condición existente, sin garantía expresa, implícita o de ningún
otro tipo. Chauvin Arnoux®, Inc. ha hecho todos los esfuerzos razonables para establecer la precisión
de este documento, pero no garantiza la precisión ni la totalidad de la información, texto, grácos u otra
información incluida. Chauvin Arnoux®, Inc. no se hace responsable de daños especiales, indirectos,
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Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
www.aemc.com
Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments
certies that this instrument has been calibrated
using standards and instruments traceable to
international standards.
We guarantee that at the time of shipping your
instrument has met the instrument’s published
specications.
An NIST traceable certicate may be requested
at the time of purchase, or obtained by returning
the instrument to our repair and calibration
facility, for a nominal charge.
The recommended calibration interval for this
instrument is 12 months and begins on the date of
receipt by the customer. For recalibration, please
use our calibration services. Refer to our repair and
calibration section at www.aemc.com/calibration.
Serial #:
Catalog #: 2131.12
Model #: 275HVD
Please ll in the appropriate date as indicated:
Date Received:
Date Calibration Due:

Certicado de Conformidad
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
certica que este instrumento ha sido calibrado
utilizando estándares e instrumentos trazables de
acuerdo con estándares internacionales.
AEMC®Instruments garantiza el cumplimiento de
las especicaciones publicadas al momento del
envío del instrumento.
Para certicados de calibración con data
trazable al N.I.S.T. (Instituto Nacional de Normas
y Tecnología) contacte a fábrica solicitando una
cotización.
AEMC®Instruments recomienda actualizar las
calibraciones cada 12 meses. Contacte a nuestro
departamento de Reparaciones para obtener
información e instrucciones de cómo proceder para
actualizar la calibración del instrumento.
Para completar y guardar en archivo:
N° de serie:
N° de catálogo: 2131.12
Modelo: 275HVD
Por favor complete la fecha apropiada como se
indica:
Fecha de recepción:
Fecha de vencimiento de calibración:
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
www.aemc.com

TABLE OF CONTENTS
1. INTRODUCTION..................................................................8
1.1 TESTING THE 275HVD BEFORE OPERATING ..................... 8
1.2 PRECAUTIONS FOR USE ................................................ 9
1.3 INTERNATIONAL ELECTRICAL SYMBOLS......................... 10
1.4 RECEIVING YOUR SHIPMENT.............................................. 10
1.5 ORDERING INFORMATION................................................... 10
1.5.1 Accessories ...................................................................... 10
2. PRODUCT FEATURES..................................................... 11
2.1 DESCRIPTION ......................................................................... 11
2.2 TYPICAL USES (ALWAYS USE A HOT STICK) ................... 12
2.3 275HVD FEATURES................................................................ 13
3. SPECIFICATIONS ............................................................. 14
3.1 ELECTRICAL............................................................................ 14
3.2 MECHANICAL.......................................................................... 14
3.3 ENVIRONMENTAL .................................................................. 14
3.4 DETECTION LEVELS.............................................................. 15
4. OPERATION ...................................................................... 17
4.1 PREPARATION FOR USE....................................................... 17
4.2 LIMITATIONS ON THE MODEL 275HVD ....................... 17
4.3 TESTING THE 275HVD BEFORE OPERATING................... 17
4.4 HIGH VOLTAGE TESTING .............................................. 18
4.5 LOW VOLTAGE TESTING....................................................... 19
4.6 FAULTS (OPEN) IN CABLES .................................................. 19
4.7 CHANGING THE BATTERIES................................................ 19
5. MAINTENANCE ................................................................20
5.1 REPAIR AND CALIBRATION.................................................. 20
5.2 TECHNICAL ASSISTANCE .................................................... 20
5.3 LIMITED WARRANTY............................................................. 21
5.3.1 Warranty Repairs.............................................................. 21

TABLA DE CONTENIDOS
1. INTRODUCCIÓN ...............................................................24
1.1 CÓMO VERIFICAR EL DETECTOR DE ALTA TENSIÓN
MODELO 275HVD ANTES DE SU USO ...................................... 24
1.2 PRECAUCIONES DE USO .............................................. 25
1.4 RECEPCIÓN DE SU EMBARQUE ......................................... 26
1.5 INFORMACIÓN PARA PONER UNA ORDEN ...................... 26
1.5.1 Accesorios y Piezas de Repuesto .................................... 26
2. CARACTERÍSTICAS DEL PRODUCTO .........................27
2.1 D E S CRI PCI Ó N ......................................................................... 27
2.2 USOS TÍPICOS (UTILICE SIEMPRE UNA PÉRTIGA)......... 28
2.3 CARACTERÍSTICAS ............................................................... 29
3. ESPECIFICACIONES .......................................................30
3.1 ELÉCTRICAS............................................................................ 30
3.2 MECÁNICAS ............................................................................ 30
3.3 AMBIENTALES ........................................................................ 30
3.4 NIVELES DE DETECCIÓN ..................................................... 31
4. OPERACIÓN......................................................................33
4.1 PRECAUCIONES PREVIAS AL USO..................................... 33
4.2 LIMITACIONES DEL MODELO 275HVD ........................ 33
4.3 REVISIÓN DEL 275HVD .........................................................34
4.4 PRUEBA DE ALTA TENSIÓN ..........................................34
4.5 PRUEBA DE BAJA TENSIÓN................................................. 35
4.6 FALLAS (APERTURAS) EN CABLES .................................... 36
4.7 REEMPLAZO DE LAS BATERÍAS ......................................... 36
5. MANTENIMIENTO ............................................................37
5.1 REPARACIÓN Y CALIBRACIÓN............................................ 37
5.2 ASISTENCIA TÉCNICA........................................................... 37
5.3 GARANTÍA LIMITADA............................................................. 38
5.3.1 Reparaciones de Garantía................................................ 38

8 Non-Contact, High Voltage Detector Model 275HVD - User Manua
1. INTRODUCTION
Thank you for purchasing an AEMC®Instruments Non-Contact High Voltage
Detector Model 275HVD.
For the best results from your instrument and for your safety, you must read the
enclosed operating instructions carefully and comply with the precautions for use.
Only qualied and trained operators should use this product.
WARNING! - READ BEFORE USE!
1.1 TESTING THE 275HVD BEFORE OPERATING
The 275HVD is a battery operated instrument. It must be carefully checked each
time before use.
1. Test Before Use:
Switch the sensitivity to TEST. The warning buzzer should emit A continuous
audible tone and the warning light LEDs should stay lit up with the 275HVD in all
positions. This indicates that the sensor is operational and the battery functional.
If there is any intermittent buzzer and/or light, do not operate the 275HVD.
Further operation is not to take place until authorized and qualied
personnel have reviewed the operation and cleared the instrument
after proper Test and Functional tests.
2. Detection Test:
After a successful Test (1), perform the following steps to ensure that the
275HVD detects voltage on a known live conductor.
Select the 240 VAC range and place the sensing head near a known live
(low voltage) conductor (if not available, rub the sensor with a cloth or
against a clothing item to generate a DC static charge which will trigger
the sensor circuit detection).
The warning light and warning beeper should go ON as if a live conductor
were being tested.
NOTE: Positioning the sensing dome near a computer screen or a TV
screen (not liquid crystal display type) should also trigger the tester
while on the 240 V selection.
3. Battery:
If any malfunction or instability of the light and/or buzzer occurs, then the
user should also check the battery compartment and/or batteries.
When installing a new set of batteries or before use, tighten the battery
compartment completely and properly (insure the O-ring is well seated),
select the Test position and move the meter in di󰀨erent positions. In the
Test mode the light and buzzer should remain ON continuously and
be steady at all times. Otherwise, do not use the instrument.

Non-Contact, High Voltage Detector Model 275HVD - User Manual 9
Failure to properly close the battery compartment and/or the use of weak
batteries may result in intermittent operation. Do not use the 275HVD
if intermittent operation occurs (see Testing the 275HVD Before
Operating § 1.1).
1.2 PRECAUTIONS FOR USE
The Model 275HVD Non-Contact High Voltage Detector has been designed
with safety in mind. However, no design can completely protect against incorrect
use. The 275HVD should be used by trained and qualied personnel only.
The 275HVD can only be used with an insulated rod or Hot Stick rated at the
appropriate working voltage. The 275HVD Non-Contact High Voltage Detector is
never to be put into direct contact with a live conductor.
If caution is not taken or safety practices are not adhered to, electrical circuits
can be dangerous and lethal.
This instrument should only be used by authorized and properly trained
personnel who fully understand the High Voltage testing procedures.
Personnel working with high voltages should be trained regularly.
■Read the user 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 safety precautions. Do not exceed the limits of this
instrument.
■The 275HVD Non-Contact High Voltage Detector must never be in physical
contact with any conductor. This is a proximity detector, not a detector
which works by contact.
■Tests must only be carried out with the 275HVD attached to an approved
insulated berglass rod or Hot Stick.
■Always use an authorized berglass (or equivalent) rod or Hot Stick
appropriately rated for the voltage with which you are working.
■Always check that the 275HVD Non-Contact High Voltage Detector is
working before and after the test.
■Verify the Range Switch setting before measuring. Make sure it is on the
correct setting for your application.
■Do not touch any exposed wiring, connections, or other live parts of an
electrical circuit.

10 Non-Contact, High Voltage Detector Model 275HVD - User Manua
1.3 INTERNATIONAL ELECTRICAL SYMBOLS
CAUTION - Risk of Danger! Indicates a WARNING. Whenever this symbol
is present, the operator must refer to the user manual before operation
Indicates a risk of electric shock. The voltage at the parts marked with this
symbol may be dangerous
Indicates Important information to acknowledge
This product complies with the Low Voltage & Electromagnetic Compatibility
European directives
1.4 RECEIVING YOUR SHIPMENT
Upon receiving your shipment, make sure that the contents are consistent with
the packing list. Notify your distributor of any missing items. If the equipment
appears to be damaged, le a claim immediately with the carrier and notify
your distributor at once, giving a detailed description of any damage. Save the
damaged packing container to substantiate your claim. Do not use an instrument
that appears to be damaged.
1.5 ORDERING INFORMATION
Non-Contact High Voltage Detector Model 275HVD.................... Cat. #2131.12
Includes three 1.5 V C-cell batteries, shotgun adapter, carrying case, and user
manual.
1.5.1 Accessories
Replacement - Battery housing with o-ring and
spring for Model 275HVD................................................................. Cat. #5100.03
Replacement - Metal Universal Spline Adapter
for Model 275HVD............................................................................ Cat. #5100.08

Non-Contact, High Voltage Detector Model 275HVD - User Manual 11
2. PRODUCT FEATURES
WARNING: Never assume conductors have been tested, as
de-energized will stay de-energized.
Always install proper grounding devices before working.
Failure to do so may result in serious injury or death.
2.1 DESCRIPTION
The Non-Contact High Voltage Detector Model 275HVD is a high voltage
detector by proximity. It is not designed to enter into contact with conductors.
WARNING: The 275HVD should never touch conductors and
must be used with an insulated berglass rod or Hot Stick
appropriately rated for the voltage being tested.
The Non-Contact High Voltage Detector Model 275HVD is not a measuring
instrument per say, rather it is a product designed to warn the user of the
presence of voltage in a particular work site.
The 275HVD uses an internal sensor designed to detect the radiated electrical
eld (V/m) present in energized conductors. The radiated electrical eld
increases with the line voltage but decreases with distance and/or shielding.
The 275HVD has eight voltage range settings. These correspond to internal eld
sensitivity settings: the lower the voltage setting; the higher the sensitivity to
detect the electrical eld; and, the greater the detection distance. It also has an
auto-test setting to check functionality (see § 4.3).
The 275HVD is battery powered and contains three standard 1.5 V Ccells in the
shaft below the sensing head.
When an electrical eld is detected, a sound annunciator (high-pitch, high-powered
buzzer) and visual indicators (bright LEDs) are triggered ON,warning the user.
The body is made out of industrial grade UL rated polyamide (Type 66 Nylon). The
shotgun adapter at the shaft end is designed to t into most Hot Stick adapters.

12 Non-Contact, High Voltage Detector Model 275HVD - User Manua
2.2 TYPICAL USES (ALWAYS USE A HOT STICK)
■Identify and check live cables
■Check and detect live high voltage cables
■Find fault in exible cables
■Check grounding equipment
■Service neon lighting
■Trace live wires
■Check high frequency radiation
■Detect residual or induced voltages
WARNING: The 275HVD detects radiated electrical elds. To
accomplish this, an energized cable or sample must radiate an
electrical eld. Shielded cables or shielded samples do not radiate,
or radiate very small electrical elds. Also, cables with concentric
neutrals will have a smaller/lower radiated eld than plain insulated
cables.
The 275HVD may not detect, as expected, an electrical eld on
shielded cables (buried cables are often shielded) or shielded
samples and the 275HVD has lower sensitivity on cables with
concentric neutrals.
It is not recommended to use the 275HVD on shielded cables
or shielded samples. Use extreme care on cables with
concentric neutrals (use a low setting).

Non-Contact, High Voltage Detector Model 275HVD - User Manual 13
2.3 275HVD FEATURES
1. Warning Light - Bright, low current Red LEDs triggered on voltage detection
2. Warning Buzzer - High noise level buzzer triggered on voltage detection
3. Rotary Selector with the following settings:
OFF - Turn the pick-up sensor o󰀨
TEST - Veries that the circuitry is working
240 V - 2 kV - 6 kV - 11 kV - 22 kV - 33 kV - 132 kV - 275 kV
4. Battery Holder
5. Shotgun adapter end tting for Hot Stick connection

14 Non-Contact, High Voltage Detector Model 275HVD - User Manua
3. SPECIFICATIONS
3.1 ELECTRICAL
Ranges: 240 V, 2 kV, 6 kV, 11 kV, 22 kV, 33 kV, 132 kV, 275 kV
Detection Frequency: (40 to 70) Hz
Power Supply: (3) 1.5 V C cell batteries
Power Consumption: 40 mA
Signal Lamp: 47 lux @ 20 cm
Sound Volume: 75 db @ 1 m from detector
Electrical Safety: Compliant with EN 61326-1, EN 61000-4-2, EN 61000-4-3,
EN 55011
3.2 MECHANICAL
Case Height: 9 in (229 mm)
Case Width: 3.78 in (96 mm)
Case Protection: IP65 per IEC 526
Weight: 1.30 lbs (0.59 kg) batteries included
Shock Test: IEC 68-2-29
Vibration Test: EN 61010, clause 8.3
Drop Test: EN 61010, clause 8.4
Impact Test: EN 61010, clause 8.2
3.3 ENVIRONMENTAL
Operating Temperature: (5 to 130) °F (-15 to 55) °C
Storage Temperature: (-4 to 150) °F (-20 to 65) °C
Humidity: (0 to 93) % RH @ 104 °F (40 °C)
Cold Temperature: IEC 68-2-1
Dry Heat: IEC 68-2-2
Damp Heat: IEC 68-2-3

Non-Contact, High Voltage Detector Model 275HVD - User Manual 15
3.4 DETECTION LEVELS
The 275HVD is used by moving it closer to the live conductor until the buzzer
and light warnings are triggered. It is designed to detect at a lower voltage than
the range setting.
The following data is considered as typical response for the 275HVD. Variations
may occur from unit to unit. As a general rule, in a clean environment, the
275HVD will trigger @ (45 to 65) % of the voltage range at 4 in/10 cm, and
detected the selected voltage setting at (8 to 12) in (20 to 30) cm.
The following data provides indicative distances at which the 275HVD will detect
a given voltage.
NOTE: These tests were conducted in ideal test conditions (unshielded
single conductor, lab environment, sensor head perpendicular to
conductor) and are not fully representative of the work site, which may
have other voltages present (and which may inuence the overall results).
The distances should only be taken as indicative and not as electrical
specications. Care should be taken when in presence of other conductors which
may also be detected by the 275HVD (see § 4.2). Measurements are based upon
a 90 ° angle (sensor head perpendicular to conductor).
Range Setting Distance Voltage Detection
240 V 4 in – 10 cm 75 V – 90 V
2 kV 4 in – 10 cm 1.3 kV
6 V 4 in – 10 cm 3.6 kV
11 kV 4 in – 10 cm 7.5 kV
22 kV 4 in – 10 cm 11 kV
33 kV 4 in – 10 cm 19.5 kV
132 kV 4 in – 10 cm Not Rated
275 kV 4 in – 10 cm Not Rated
Range Setting Voltage Distance
240 V 240 V 10.5 in - 27 cm
2 kV 2 kV 10.5 in - 27 cm
6 kV 6 kV 11.5 in - 29 cm
11 kV 11 kV 10.5 in - 27 cm
22 kV 22 kV 12.2 in - 31 cm
33 kV 33 kV 11.0 in - 28 cm
132 kV 132 kV 10.0 in - 25 cm
275 kV 275 kV 10.0 in - 25 cm

16 Non-Contact, High Voltage Detector Model 275HVD - User Manua
The following information provides typical detection distances when using a lower
setting than the line voltage.
NOTE: The distances may vary with each unit and will be a󰀨ected
based on the actual environment. The values displayed were
conducted in an ideal lab environment and cannot represent each eld
environment.
SETTING VOLTAGE DISTANCE
240 VAC 500 VAC 12 in - 32 cm
240 VAC 1 kVAC 18 in - 48 cm
240 VAC 2 kVAC 29 in - 75 cm
240 VAC 6 kVAC 48 in - 124 cm
240 VAC 11 kVAC 57 in - 146 cm
240 VAC 22 kVAC 89 in - 226 cm
SETTING VOLTAGE DISTANCE
2 kVAC 6 kVAC 16 in - 40 cm
2 kVAC 11 kVAC 20 in - 52 cm
2 kVAC 22 kVAC 24 in - 60 cm
2 kVAC 33 kVAC 36 in - 92 cm
SETTING VOLTAGE DISTANCE
6 kVAC 11 kVAC 24 in - 61 cm
6 kVAC 22 kVAC 29 in - 75 cm
6 kVAC 33 kVAC 41 in - 105 cm
SETTING VOLTAGE DISTANCE
11 kVAC 22 kVAC 13 in - 35 cm
11 kVAC 33 kVAC 16 in - 42 cm
SETTING VOLTAGE DISTANCE
22 kVAC 33 kVAC 14 in - 36 cm

Non-Contact, High Voltage Detector Model 275HVD - User Manual 17
4. OPERATION
4.1 PREPARATION FOR USE
The Non-Contact High Voltage Detector should be inspected for any visible
signs of damage before using, battery condition and the checks described below
should be performed to ensure that it is operating correctly.
When you rst receive it, if there is any sign of damage or if the instrument does
not operate correctly, return it to the distributor from which it was purchased.
4.2 LIMITATIONS ON THE MODEL 275HVD
See Warnings on pages 11 and 12
■Testing voltages on cable composed of multiple phases may be a problem.
In particular, multiple phase cables twisted together may have their electrical
elds canceling each other out (vector sum), and a much lower detectable
eld signal may result. This may lead to non-detection if the range setting is
too high. Try a lower range setting if this situation occurs. Keep in mind that
the actual line voltage may be much higher!
■Problems can arise when the 3-phase circuit of 275 kV/133 kV/11 kV
transformers are tested. The electric eld of the HV and MV bus bars can
trigger the detector when it is about one meter (approx 3 ft) above the ground.
Users must be aware that this is common with most of the electric eld
voltage detectors. The 275HVD can pick up adjacent circuit electrical elds to
the one being tested and may indicate the wrong information to the user.
■Electrical Field sensitivity is reduced when the 275HVD is used close to
grounding points.
■The Model 275HVD will work on cables with a concentric neutral.
■The Model 275HVD will not work on shielded cables.
4.3 TESTING THE 275HVD BEFORE OPERATING
Also read: WARNING! - READ BEFORE USE! on page 8
Switch the sensitivity to TEST. The warning buzzer should emit a continuous
audible tone and the warning light LEDs should light up. This indicates that the
sensor is operational and the battery functional.
Perform the following steps to ensure that the 275HVD detects voltage on a
known live conductor.
■Select the 240 VAC range and place the sensing head near a known live (low
voltage) conductor (if not available, rub the sensor with a cloth or against
a clothing item to generate a DC static charge which will trigger the sensor
circuit detection).
■The warning light and warning beeper should go ON as if a live conductor was
being tested.

18 Non-Contact, High Voltage Detector Model 275HVD - User Manua
NOTE: Positioning the sensing dome near a computer screen or a TV
screen (not liquid crystal display type) should also trigger the tester
while on the 240 V selection
4.4 HIGH VOLTAGE TESTING
See Warnings on pages 11 and 12
The 275HVD Non-Contact High Voltage Detector works by proximity. It is not
designed to be in physical contact with live conductors. Its sensor detects the
radiated eld which surrounds live conductors.
WARNING: Do not touch live conductors with the 275HVD
Non-Contact High Voltage Detector.
Radiated eld strength increases with voltage and decreases quickly with
distance and/or ground shielding. The radiated eld from a cable where
conductors supplying three-phase power are close together, tends to cancel out
(See § 4.2). The rotary switch (attenuator) is used to identify and di󰀨erentiate
various HV live cables.
WARNING: The tester must only be used with an appropriate
insulated rod or Hot Stick when measuring High Voltage.
After checking the 275HVD and ensuring its good operation, select the test
range. It is recommended to start with a lower setting than the actual working
voltage, and then to try again with higher settings. The user may also consider
using lower settings to check for lower voltages on a conductor.
With the 275HVD at the end of a hot stick, move towards the live conductor until
its warnings are triggered.

Non-Contact, High Voltage Detector Model 275HVD - User Manual 19
4.5 LOW VOLTAGE TESTING
See Warnings on pages 11 and 12
The 275HVD Non-Contact High Voltage Detector works by proximity. The
275HVD is not designed to be in physical contact with live conductors. Its sensor
detects the radiated eld that surrounds live conductors.
WARNING: Do not touch live conductors with the 275HVD
Non-Contact High Voltage Detector.
Radiated eld strength increases with voltage and decreases quickly with
distance and/or ground shielding. The radiated eld from a cable where
conductors supplying three-phase power are close together, tends to cancel out
(See § 4.2). Detecting distance of a 250 VAC single live wire is
about 4 in (10 cm). When grouped with neutral and ground wires, as in a exible
cable, the distance is reduced to 2 in (5 cm) or less.
4.6 FAULTS (OPEN) IN CABLES
See Warnings on pages 11 and 12
Faults in certain exible cables can be detected with the 275HVD. If the cable
is still energized, set the 275HVD sensitivity so that it triggers, then move the
275HVD along the cable until a change in condition is obtained. An audible tone
and LED should be ON when the sensor is on the supply side of the open and
will turn OFF when on the other side.
4.7 CHANGING THE BATTERIES
Batteries should be checked with a multimeter and replaced periodically. The
275HVD Non-Contact High Voltage Detector uses (3) 1.5 V Ccell batteries.
Open the battery compartment (turn the shaft counter-clockwise) to remove the
batteries. Ensure that polarity is respected when installing new batteries.

20 Non-Contact, High Voltage Detector Model 275HVD - User Manua
5. MAINTENANCE
5.1 REPAIR AND CALIBRATION
To ensure that your instrument meets factory specications, we recommend that
the instrument be sent back to our factory Service Center at one-year intervals
for recalibration or as required by other standards or internal procedures.
For instrument repair and calibration:
You must contact our Service Center for a Customer Service Authorization
Number (CSA#). Send an email to [email protected] requesting a CSA#,
you will be provided a CSA Form and other required paperwork along with the
next steps to complete the request. Then return the instrument along with the
signed CSA Form. This will ensure that when your instrument arrives, it will be
tracked and processed promptly. Please write the CSA# on the outside of the
shipping container. If the instrument is returned for calibration, we need to know
if you want a standard calibration or a calibration traceable to N.I.S.T. (includes
calibration certicate plus recorded calibration data).
Ship To: Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
15 Faraday Drive • Dover, NH 03820 USA
Phone: [phone] (Ext. 360) / [phone] (Ext. 360)
Fax: [phone]
E-mail: [email protected]
(Or contact your authorized distributor.)
Contact us for the costs for repair, standard calibration, and calibration traceable
to N.I.S.T.
NOTE: You must obtain a CSA# before returning any instrument.
5.2 TECHNICAL ASSISTANCE
If you are experiencing any technical problems or require any assistance with the
proper operation or application of your instrument, please call, e-mail or fax our
technical support team:
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
Phone: [phone] (Ext. 351)
Fax: [phone]
E-mail: [email protected]
www.aemc.com