Megger Detex Operating Manual
The Measure of Excellence in
Electrical Testing…
The industry leader since 1895, Megger offers a comprehensive line of
electrical test and measurement products, from portable instruments for
use in the field to fully-integrated systems for high voltage systems testing.
Megger fulfills a range of requirements found in electric utility, large
industrial, electrical apparatus manufacturing, military and governmental
applications worldwide.
PORTABLE FIELD TEST EQUIPMENT
Megger’s extensive product line includes its well known portable field test
equipment, including the Megger® family of Insulation Resistance testers,
which indicate the deterioration of electrical insulation; Ground Resistance
Testers for installing and maintaining grounding systems; and equipment
for locating faults in both power and communications cable.
PRECISION TEST & MEASUREMENT EQUIPMENT
Megger operates a calibration lab traceable to the NIST to insure the quality
of its precision products, which includes the DRLO® line of digital low
resistance ohmmeters.
HIGH VOLTAGE SYSTEMS TEST EQUIPMENT
Megger is a leading supplier of equipment and systems for High Voltage
Systems testing applications, from rigorous QC testing of manufactured
power cable to demanding R&D requirements in the Aerospace industry.
This range of products includes fully-integrated systems for detecting
minute levels of partial discharge to HV power supplies and DC dielectric,
transformer turn ratio and capacitance/dissipation factor test sets for use in
the field testing of large power apparatus.
No matter whether it’s a hand-held Megger® Insulation Tester or a 750kV
Partial Discharge Detection Systems, Megger backs it up with a full range
of support services:
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Application Assistance
Our Application Engineers can demonstrate how Megger can fulfill your testing
requirements.
Customer Service
Contact one of Megger’s Customer Service Representatives for quick
answers to your questions regarding where to buy, order entry, delivery or
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literature.
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Many of our products are readily available through an Authorized Stocking
Distributor near you.
AND MORE…
Megger also supports you with expert calibration services traceable to the
NIST, full one-year warranty, convenient leasing and much more. Because
when you buy Megger, you’re getting more than a quality product.
To speak to a Megger Customer Service Representative or for information
about any of Megger’s products and services, contact us at:
Megger
P.O. Box 9007
Valley Forge, PA 19485-1007
1-800-723-2861 ext. 8578
610-676-8578
Shipping Address:
Valley Forge Corporate Center
2621 Van Buren Avenue
Norristown, PA 19403
AVTM51J4
Rev. F
October 2002
Instruction Manual
for
Detex® Voltage Detectors and Phasing Testers
Catalog Numbers 514242, 514360, 514440,
514500, 510836 Series and Accessories
High-Voltage Equipment
Read the entire manual before operating.
Aparato de Alto Voltaje
Antes de operar este producto lea este manual enteramente.
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Copyright 2001 by Megger. All rights reserved.
The information presented in this manual is believed to be adequate for the
intended use of the product. If the product or its individual instruments are
used for purposes other than those specified herein, confirmation of their
validity and suitability must be obtained from Megger. Specifications are
subject to change without notice.
Megger
Valley Forge Corporate Center
P.O. Box 9007
Valley Forge, PA 19485-1007
Tel.: 610-676-8500
Fax: 610-676-8610
www.megger.com
TABLE OF CONTENTS
Section 1 Introduction................................................................................................... 1
RECEIVING INSTRUCTIONS.................................................................................1
GENERAL INFORMATION ....................................................................................1
Section 2 Safety ...............................................................................................................3
Section 3 Equipment Tabulation and Specifications............................................7
VOLTAGE DETECTORS.........................................................................................7
PHASING TESTERS ................................................................................................7
ACCESSORIES...........................................................................................................8
Section 4 Description and Operation of the Detex® Voltage
Detectors.....................................................................................................................9
PRECAUTION ...........................................................................................................9
ELECTRONIC VOLTAGE DETECTORS...............................................................9
LED VOLTAGE DETECTOR ................................................................................11
OPERATING CONDITIONS...................................................................................13
Section 5 Description and Operation of the Detex® Phasing
Testers....................................................................................................................... 15
PRECAUTION .........................................................................................................15
ANALOG-TYPE KILOVOLT PHASING TESTERS..............................................15
LED PHASING TESTER ........................................................................................20
Section 6 Description and Operation of the Piezo Verifier ..............................25
DESCRIPTION.........................................................................................................25
OPERATION ............................................................................................................25
Section 7 Troubleshooting and Repair...................................................................27
TROUBLESHOOTING.............................................................................................27
REPAIR ....................................................................................................................30
PREPARATION FOR SHIPMENT AND STORAGE............................................30
Section 8 Technical Data on Phasing Testers...................................................... 31
Test 1 RESISTOR ELEMENT (REMOVABLE ROD)...........................................31
Test 2 INSULATION OF THE CONNECTING CABLE......................................32
Test 3 POLE INSULATION....................................................................................33
Test 4 OPERATING CURRENT.............................................................................33
Test 5 MAXIMUM FAULT CURRENT CALCULATIONS...................................34
Test 6 VOLTAGE-ADJUSTING KNOB .................................................................34
WARRANTY.................................................................................................................37
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List of Illustrations
Figure 1 Dextex® Electronic Voltage Detectors.........................10
Figure 2 Dextex® LED Voltage Detector....................................11
Figure 3 Dextex® Analog-Type Kilovolt Phasing Tester.............16
Figure 4 Dextex® LED Phasing Tester.......................................20
Figure 5 Using the Piezo Verifier to Check LED Detector.........26
Figure 6 Using the Piezo Verifier to Check LED Phasing Tester...26
Figure 7 Test Setup Using Ohmmeter .......................................31
Figure 8 Connecting Cable Insulation Test Setup....................32
Figure 9 Pole Insulation Test Setup..........................................33
Figure 10 Operating Current Test Setup....................................33
Figure 11 Conditions for Maximum Fault Current .....................34
Section 1
Introduction
RECEIVING INSTRUCTIONS
Check the equipment received against the packing list to ensure that all
materials are present. Notify Megger of any shortage. Telephone 1-800-723-2861
or 610-676-8578.
Examine the instrument for damage received in transit. If any damage is
discovered, file a claim with the carrier at once and notify Megger or its
nearest authorized sales representative, giving a detailed description of the
damage.
Detex® Voltage Detectors and Phasing Testers have been thoroughly tested
and inspected to rigid specifications before being shipped and are ready for
use upon receipt. Batteries are not installed prior to shipment in the
electronic voltage detectors and in the analog-type kilovolt phasing testers.
Refer to Section 7 of this manual for battery installation instructions.
GENERAL INFORMATION
This manual describes Detex® Voltage Detectors and Phasing Testers. The
detectors and testers are contact-type devices which indicate the presence
of phase-to-ground voltages. Refer to Section 2 of this manual for safety
information.
Specifications for the various instruments are delineated in Section 3.
Section 4 describes the operation of the detectors and Section 5 describes
the operation of the testers. The use of the Piezo Verifier, an accessory for
verifying the correct operation of detectors and testers that do not have a
self-testing capability, is described in Section 6. Section 7 contains
simplified troubleshooting procedures including instructions for battery
installation. Refer to Section 8 for additional technical data on phasing
testers.
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2
Section 2
Safety
Safety is the responsibility of the user.
The purpose of the detectors and testers is limited to use as described in
this manual. Do not use the detectors or testers with any device other than
specifically described.
The following warning and caution notices are used in this manual where
applicable. These notices precede the specific instruction where the hazard
is likely to be encountered.
WARNING
Warning, as used in this manual, is defined as a
condition or practice which could result in
personal injury or loss of life.
CAUTION
Caution, as used in this manual, is defined as a
condition or practice which could result in
damage to or destruction of the equipment or
apparatus under test.
§ Use with extreme care. If in doubt, stop.
§ Check detectors and testers for correct operation before and after use.
§ Ground the circuit under test before working on it.
§ These detectors and testers should be used only by personnel familiar
with safe methods of approach to live equipment and conversant with
safety precautions in performing live line operations.
§ Follow all applicable safety rules.
These voltage detectors and phasing testers are intended to be connected to
sources of high-voltage electrical energy and all persons making or assisting
in the tests must use all practical safety precautions to prevent contact with
energized parts of the test equipment and related circuits. If the detectors
and testers are operated properly, test personnel need not wear rubber
gloves. As a routine safety procedure, however, some users require that
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rubber gloves be worn when making connections to high-voltage
equipment. Megger considers this an excellent safety practice.
Users of high-voltage equipment should note that high-voltage discharges
and other sources of strong electric or magnetic field may interfere with the
proper functioning of heart pacemakers. Personnel with heart pacemakers
should obtain expert advice on the possible risks before operating this
equipment or being close to the equipment during operation.
Attention is drawn to the safety warnings marked on the body of the
detectors. In particular, the detectors must be held below the line marking
the safe limit for handling when applying to live apparatus, telescopic pole
models extended correctly, and detector head models must be attached to a
hot line pole, as required by the voltage of the apparatus under test.
WARNING
The test equipment must be held on the power
line for a minimum of 3 seconds.
The detectors and testers are contact devices; they are not proximity
devices. Therefore, their fork or hook terminals must actually touch the
bare conductor being tested for at least 3 seconds to work properly.
Voltage detectors are designed to operate only on systems referenced to
ground. Erroneous indications will occur when testing ungrounded delta or
wye systems. Correct indications by the instruments depend on their being
used with the correct system.
Cat. No. 514360-2, 514360-3, 514360-4, 514242-1, 514242-2, 514500-3,
514500-4 instruments (those supplied without integral poles) are
showerproof. They are not waterproof and could be rendered inoperative if
immersed. When using these detectors and testers in rain or snow, care
must be taken to follow all safety precautions as suggested by the
manufacturer of the hot line pole being used. In particular, make sure that
the hot line pole used has a wet rating at least equal to the voltage of the
system under test. Also make sure that it is clean and free from
imperfections, such as cracks and chips.
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Cat. No. 514440-2, 514360-1, 514500-1, 514500-2, and 510836-1 instruments
(those supplied with integral poles) should not be used in rain or snow.
They do not have a wet rating.
When checking for the absence of voltage, detectors and testers should be
tested both before and after use to make sure they are operating properly. It
is best to make this test on a live portion of the same circuit being tested.
This will ensure that the sensitivity of the detector is satisfactory for the
particular application. As an alternative, make the tests on another circuit of
similar rating and in similar lighting conditions.
Before touching or working near de-energized circuits or apparatus, make
sure that they are grounded using appropriate safe grounding techniques.
Conductors and cables used for grounding must be capable of handling the
maximum possible current.
Make sure that the nominal voltage of the apparatus under test is within the
voltage range specified on the instrument.
NOTE
The voltage specified on voltage detectors
refers to nominal system line voltage. The
actual operating voltage range of the detector is
the voltage specified, divided by 1.73.
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Section 3
Equipment Tabulation and Specifications
VOLTAGE DETECTORS
(For ac use only, grounded circuits only)
Operating
Cat. No Type
514242-1 Electronic 69 to 230 Spline Fitting 1.5 (0.67)
514242-2 Electronic 230 to 500 Spline Fitting 1.5 (0.67)
514360-1 Electronic 2.4 to 6.9
514360-2 Electronic 4.16 to 13.8 Spline Fitting 1.1 (0.50)
514360-3 Electronic 12 to 34.5 Spline Fitting 1.1 (0.50)
514360-4 Electronic 24.9 to 69 Spline Fitting 1.1 (0.50)
514440-2 LED 4.16 to 34.5
Range
(kV) ph-ph
Style
Telescopic Pole
34 to 51 in.
(86 to 129 cm)
Telescopic Pole
34 to 49.5 in.
(86 to 126 cm)
Weight
lb (kg)
2.2 (0.99)
2.1 (0.95)
Detectors are supplied with vinyl carrying cases.
PHASING TESTERS
(For ac use only, grounded or ungrounded circuits)
Cat. No Type
Operating
Range (kV)
Style Weight
lb (kg)
514500-1 Meter 1 to 7 Two Pole 4.0 (1.8)
514500-2 Meter 4 to 36 Two Pole 4.7 (2.1)
514500-3 Meter 13 to 80 Spline Fitting 4.3 (1.9)
514500-4 Meter 4 to 36 Spline Fitting 4.3 (1.9)
510836-1 LED 2.1 to 36 Two Pole 3.0 (1.4)
Testers are supplied with metal carrying cases.
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8
ACCESSORIES
Cat. No. 512117 Pneumatic Rubber Glove Tester
Size: 5-1/2 in. (14 cm) high; 5 in. (12.7 cm) diameter
Weight: 1-1/2 lb (0.7 kg)
Cat. No. 510005 Piezo Verifier
Size: 7 in. (18 cm)
Weight: 3/4 lb (0.34 kg)
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