Megger Detex 514242 Series Instruction Manual
Megger Detex 514242 Series Instruction Manual

Megger Detex 514242 Series Instruction Manual

Voltage detectors and phasing testers

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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
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
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
Partial Discharge Detection Systems, Megger backs it up with a full range
of support services:
The Measure of Excellence in
Electrical Testing...
®
family of Insulation Resistance testers,
Insulation Tester or a 750kV
®
line of digital low
®

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Summary of Contents for Megger Detex 514242 Series

  • Page 1 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 ®...
  • Page 2 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 warranty and repair information. They can also assist you in ordering replacement parts, accessories, operating/service manuals and product/application literature.
  • Page 3 AVTM51J4 Rev. F October 2002 Instruction Manual ® 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.
  • Page 4 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.
  • Page 5: Table Of Contents

    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 ®...
  • Page 6 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...
  • Page 7: Section 1 Introduction

    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.
  • Page 9: Section 2 Safety

    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.
  • Page 10 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.
  • Page 11 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.
  • Page 13: Section 3 Equipment Tabulation And Specifications

    Section 3 Equipment Tabulation and Specifications VOLTAGE DETECTORS (For ac use only, grounded circuits only) Operating Weight Range Cat. No Type Style lb (kg) (kV) ph-ph 514242-1 Electronic 69 to 230 Spline Fitting 1.5 (0.67) 514242-2 Electronic 230 to 500 Spline Fitting 1.5 (0.67) Telescopic Pole...
  • Page 14: Accessories

    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)
  • Page 15: Section 4 Description And Operation Of The Detex Voltage Detectors

    Section 4 Description and Operation of the ® Detex Voltage Detectors PRECAUTION Be sure to read and understand Section 2, Safety, of this manual before operating the voltage detector. Even after determining that a circuit is de-energized by use of the detector, it may still carry an induced voltage, a capacitively coupled voltage, or an applied voltage lower than the operating range of the detector.
  • Page 16: Figure 1 Dextex ® Electronic Voltage Detectors

    connection on the end of the proper length hot line pole rated for the voltage of the system being tested. SOUND INDICATOR TEST BUTTON LEDs GREEN GREEN SOUND INDICATOR TEST BUTTON ATTACHMENT FITTING ® Figure 1: Detex Electronic Voltage Detectors...
  • Page 17: Led Voltage Detector

    LED VOLTAGE DETECTOR The Cat. No. 514440-2 LED voltage detector shown in Figure 2 uses a lamp as the detecting device, with the lamp connected on one side to the contact terminal and on the other side to an external conducting electrode. A small gap is incorporated in series with the lamp.
  • Page 18 The overall operation of the detector must be checked by at least one of the following procedures: Press the TEST button or use an external verifier. The lamps must flash. WARNING The test equipment must be held on the power line for a minimum of 3 seconds.
  • Page 19: Operating Conditions

    OPERATING CONDITIONS WARNING Keep your hands behind the guards on the poles. Follow all safety precautions for high- voltage equipment. Ground circuit before touching using a safe grounding method. WARNING The test equipment must be held on the power line for a minimum of 3 seconds. The forked terminal must touch the bare conductor under test for proper operation of the detector for at least 3 seconds.
  • Page 21: Phasing Testers

    Section 5 Description and Operation of the ® Detex Phasing Testers PRECAUTION Be sure to read and understand Section 2, Safety, of this manual before operating the phasing tester. ANALOG-TYPE KILOVOLT PHASING TESTERS Description These analog-type kilovolt phasing testers (Cat. No. 514500-1, 514500-2, 514500-3, and 514500-4) consist of two insulated poles each equipped with a removable contact antenna and a flexible insulated cable connecting the two poles.
  • Page 22: Figure 3 Dextex ® Analog-Type Kilovolt Phasing Tester

    Figure 3: Detex Analog – Type Kilovolt Phasing Tester ® Hand guards are standard on phasing testers with Cat. No. 514500-1, and 514500-2. Cat. No. 514500-3 and 514500-4 testers have universal spline fittings for attachment to hot line poles. These phasing testers are designed for outdoor testing of grounded and ungrounded systems.
  • Page 23 ® Operating Conditions - Detex Analog Voltage Detectors WARNING Keep your hands behind the guards on the poles. WARNING The test equipment must be held on the power line for a minimum of 3 seconds. CAUTION Phasing testers are constructed for intermittent use and should not be left operating on closed circuits beyond the time necessary for the tests, since the protective resistances may be...
  • Page 24 ® Voltage Detection - Detex Analog Voltage Detectors WARNING The test equipment must be held on the power line for a minimum of 3 seconds. Touch for at least 3 seconds the contact forks or hooks of the detector element pole and the auxiliary element pole to two conductors or parts to be tested.
  • Page 25 First, touch for at least 3 seconds the detector element pole to one of the conductors of the first circuit. While maintaining this contact, successively touch the auxiliary element pole to each of the conductors of the second circuit. The conductor, which is at the same phase as the conductor being touched on the first circuit is identified by having no pointer response on the meter, while in the case of the two other phases the meter responds with the phase-to-phase voltage.
  • Page 26: Led Phasing Tester

    LED PHASING TESTER Description The Cat. No. 510836-1 LED phasing tester is designed for use on grounded and ungrounded systems. It consists of two 43 in. long poles with a flexible insulated cable connecting them. Hand guards are provided for safety.
  • Page 27 Operating Conditions – LED Phasing Tester WARNING Keep your hands behind the guards on the poles. WARNING The test equipment must be held on the power line for a minimum of 3 seconds. CAUTION Do not attempt to check phasing between two circuits when either or both circuits are ungrounded systems unless both circuits originate from the same supply transformer...
  • Page 28 WARNING The voltage -adjusting knob must not be operated during a voltage test. Set the voltage-adjusting knob in accordance with the following: 1. For single-pole detection, with the auxiliary element held clear, set the adjusting knob at the system line to the expected ground voltage.
  • Page 29 and in this case it is simply a matter of finding out which parts are live. Illumination is obtained for voltages from approximately 2 kV. Checking High-Voltage Fuses – LED Phasing Tester This operation is a typical example of the application of the phasing tester. First, while holding the auxiliary element clear, touch the detector element to the live side of each cutout;...
  • Page 30 NOTE Since the flash rate increases as the voltage increases, different flash rates are clues to the voltage levels that are present. Therefore, a careful observation of the flash rate serves as an additional check for the presence of improper voltages due to incorrect system connections.
  • Page 31: Section 6 Description And Operation Of The Piezo Verifier

    Section 6 Description and Operation of the Piezo Verifier DESCRIPTION The Piezo Verifier, Cat. No. 510005, consists of a piezo electric generator of very small dimensions enclosed in a case of insulating material. It is used to verify the correct operation of voltage detectors and phasing testers that do not have a self-testing capability.
  • Page 32: Figure 5 Using The Piezo Verifier To Check Led Detector

    detector should be held as shown and the verifier operated with the other hand. It is extremely important to use the Piezo Verifier to check that the LED voltage detector is operating correctly if it is being used to detect the absence of voltage on a conductor, unless other means of checking are used.
  • Page 33: Section 7 Troubleshooting And Repair

    Section 7 Troubleshooting and Repair TROUBLESHOOTING Voltage Detectors Check operation of the voltage detector on a live portion of the same circuit under test. If there is no indication on the detector, check the following: 1. Using a light shield if necessary, confirm that the LED detector is not illuminating.
  • Page 34 To install batteries in electronic voltage detectors: For Cat. No. 514242 series detectors: Unscrew the black front ring of the housing. 2. Remove the body of the indicator from the housing. 3. Snap on the battery connection and place the battery in its compartment.
  • Page 35 2. Make sure that the adjusting knob is properly set to the voltage of the system. The indicator lamp will flash brightest when this knob is set properly so do not set to a voltage either appreciably greater or less than the circuit voltage. 3.
  • Page 36: Repair

    REPAIR Megger offers a complete repair service and recommends that its customers take advantage of this service in the event of any equipment malfunction. When returning an instrument to the factory for repair, please indicate all pertinent information, including problem symptoms and attempted repairs.
  • Page 37: Section 8 Technical Data On Phasing Testers

    This section describes factory tests and calculations. They are presented for better understanding and as an aid to users who wish to set up their own test program. Megger will assist users who require technical assistance concerning specific test methods.
  • Page 38: Test 2 Insulation Of The Connecting Cable

    WARNING Tests 2, 3, and 4 involve dangerous high voltages. These tests must be set up and performed only by qualified personnel in accordance with all safety precautions. WARNING The test equipment must be held on the power line for a minimum of 3 seconds. TEST 2 INSULATION OF THE CONNECTING CABLE Figure 8 shows the test setup for testing the insulation of the connecting cable using an ac milliammeter with suitable scale.
  • Page 39: Test 3 Pole Insulation

    TEST 3 POLE INSULATION Figure 9 shows the test setup for checking pole insulation using earthed poles. Test voltage is 1.2 times maximum nominal phase to ground voltage for 1 minute; leakage current is less than 125 µA. This test should not be performed on Cat.
  • Page 40: Test 5 Maximum Fault Current Calculations

    TEST 5 MAXIMUM FAULT CURRENT CALCULATIONS Figure 11 shows the conditions for calculating maximum fault current which could flow accidentally at Test Point A with a faulty cable. T he maximum fault current would be: maximum nominal voltage × auxiliary element resistance TEST...
  • Page 41 c. Raise the voltage to a value equal to the knob setting. Observe the lamp, it should be flashing at its maximum rate. d. Touch the auxiliary element simultaneously to the same electrode as the detector element. The lamp should extinguish. A faint flash may still be observed but the difference between this faint flash and maximum intensity flash is considerable and easily discernible.
  • Page 43: Warranty

    WARRANTY Products supplied by Megger are warranted against defects in material and workmanship for a period of one year following shipment. Our liability is specifically limited to replacing or repairing, at our option, defective equipment. Equipment returned to the factory for repair must be shipped prepaid and insured.
  • Page 44 NOTES...

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