Related Manuals for Megger BT 500-IS-1
Summary of Contents for Megger BT 500-IS-1
- Page 1 Operating Manual Cable Fault Burn-Down Instrument BT 500-IS-1 Issue: 03 (11/2017) – EN 128311400...
- Page 2 All rights reserved. No part of this handbook may be copied by photographic or other means unless Megger have before-hand declared their consent in writing. The content of this handbook is subject to change without notice. Megger cannot be made liable for technical or printing errors or shortcomings of this handbook.
- Page 3 Terms of Warranty Megger accept responsibility for a claim under warranty brought forward by a customer for a product sold by Megger under the terms stated below. Megger warrant that at the time of delivery Megger products are free from manufacturing or material defects which might considerably reduce their value or usability.
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Page 4: Table Of Contents
Operating Manual BT 500-IS-1 Table of Contents General Safety Instructions ................1 General Notes ....................1 General Safety Instructions and Warnings ............3 Description ...................... 6 General Introduction ..................6 Functions ......................8 Power Supply ....................8 Technical Specification ..................9 Items Supplied .................... - Page 5 Figure 6 : Principle of Sheath Fault Postlocation ......20 Figure 7 : Schematic Diagram of Sheath Fault Prelocation Using MVG 5 and BT 500-IS-1 ..........21 Figure 8 : How to Connect the BT 500-IS-1 for Sheath Testing ..23...
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Page 6: General Safety Instructions
Operating Manual BT 500-IS-1 General Safety Instructions General Notes Safety precautions This manual contains basic instructions commissioning and operation of the device / system. For this reason, it is important to ensure that the manual is always available to the authorised and trained operator. He needs to read the manual thoroughly. - Page 7 Operating staff In its normal operation, the Cable Fault Burn-Down Instrument BT 500-IS-1 generates a voltage >1 kV which is dangerous to touch. The system may only be installed and operated by an authorized electrician. An electrician is...
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Page 8: General Safety Instructions And Warnings
In this case inform the person in charge who should inform the Megger service to resolve the problem. The instrument may only be operated when the malfunction is resolved. - Page 9 The main power cord plug ultimately serves as the master disconnect for the BT 500-IS-1 so must always remain accessible and in case of a fault with the unit the plug should be removed from the wall socket to de-energize the unit.
- Page 10 Operating Manual BT 500-IS-1 Non-Stationary Test Equipment The site where the BT 500-IS-1 is put up and installed, including the near end of the cable to be tested, is regarded as a non-stationary test equipment (according to VDE 0104-10-89). It must be looked at as a test site without forced protection against accidental contact.
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Page 11: Description
General Introduction Figure 1 : View of the BT 500-IS-1 Note: The BT 500-IS-1 is available for nominal mains supply voltages of either 230 Vac or 115 Vac. The information provided in the user documentation is valid for both versions of the BT 500-IS-1 unless stated otherwise. - Page 12 BT 500-IS-1 with an Earth Fault Locator (e.g. ESG NT). The BT 500-IS-1 may also be used for testing the withstand voltage of telecommunication cables and cable sheaths made of PVC or PE.
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Page 13: Functions
10 % and 100 % of its maximum value. The BT 500-IS-1 features voltage and current regulation to prevent overload of the cable burn-down instrument at any range. Whenever the cable fault suddenly turns into a short... -
Page 14: Technical Specification
Operating Manual BT 500-IS-1 Technical Specification 230 Volt version 115 Volt version Installed load 700 VA Mains connection 230 Vac (± 15%), 115 Vac (± 15%), 3 A, 50 Hz 6 A, 60 Hz Maximum output current Maximum output voltage... -
Page 15: Items Supplied
Operating Manual BT 500-IS-1 Items Supplied Cable Fault Burn-Down BT 500-IS-1 BT 500-IS-1 Instrument 230 Volt version 115 Volt version Cable set consisting of: HV connect. lead 3.0 m HSK 2-B Tap-off clip black AK 41-B Tap-off clip red AK 42-B... -
Page 16: Front View
Operating Manual BT 500-IS-1 Front View Figure 3 : Front View of BT 500-IS-1 1 Miniature fuse - replace blown 12 Emergency-Off socket fuse by type as shown on the (not applicable for the 115 Volt front panel. version) 230 V version: M6,3 / 250C... -
Page 17: Safety Precautions
In line with safety standards (e.g. German VDE 0104-10-89 pos. 3.9.4.2.), two deliberate operations must be performed to change over to switching-on standby. For the BT 500-IS-1, the rotary control [6] must be turned down to zero (left stop!) and the green push button [18] must be depressed. The red lamp repeater [15] will light up and the green lamp repeater [21] will go out. -
Page 18: Mains Standby
Operating Manual BT 500-IS-1 Mains Standby For enhancing safety, the BT 500-IS-1 is furthermore equipped with another lamp repeater [20] the color of which is white. This lamp indicates that the instrument is connected to the mains. The instrument is not switched on, no auxiliary circuits are activated. -
Page 19: Earth Connection (Protective Measures)
Make end of connection lead and all ends of the test object safe against any contact. Temperature Monitoring To protect the BT 500-IS-1 from being damaged due to overheating, it is equipped with a temperature monitor. The blue lamp... -
Page 20: Getting Started And Operation
The instrument changes over into mains standby as soon as the key switch [11] is turned from 0 to I. Burning Down As a rule, the BT 500-IS-1 is connected to the test object in floating circuit (wire – wire) for performing fault conversion (burning down). - Page 21 (e.g. for measurements on the heating cables of an electric underfloor heating system), the optional connection cable with integrated damping resistor (BT 500-IS-1-DR) can be used instead of the standard connection cable to stabilize the arc during the burning process.
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Page 22: Preparation Of Burning-Down
[21] is alight. The instrument is ready for use. Pressing the green push button HV – ON [18] results in the BT 500-IS-1 changing over to switching-on standby (Attention!!: Consider the test object as being live, i. e. under high voltage!). -
Page 23: Burning-Down
To this end the BT 500-IS-1 is equipped with an automatic current regulator. Since maximum power is limited to 500 W, the current will increase with decreasing fault resistance only up to a certain limit. -
Page 24: Figure 5 : Power Diagram Of Fault Location
0.1 kOhm Figure 5 : Power Diagram of Fault Location In this manner the full power of the BT 500-IS-1 can be exploited for burning down the high-resistance fault into a low-resistance one. Localization proper of the low-resistance fault is performed using no more than just a few times 10 Watts. -
Page 25: Sheath Fault Postlocation
Operating Manual BT 500-IS-1 Sheath Fault Postlocation The Cable Fault Burn-Down Instrument BT 500-IS-1 is connected to the shield of the faulty cable or conductor with an earth fault (e. g. in a 4-wire low-voltage cable), on the one hand, and system earth, on the other. Depending on the size... -
Page 26: Sheath Fault Prelocation In Conjunction With Mvg 5
MVG 5 with BT 500- IS-1. The red terminal of the BT 500-IS-1 must be connected to the contact pin for voltage feed (HSP) of the MVG 5, the black terminal to the contact pin of system earth of the MVG 5 (see also instruction manual of MVG 5). - Page 27 3. Prelocation of earth-to-wire faults on plastic-sheathed low-voltage cables. Make sure the emergency-off switch NAG 2 is installed to ensure safe operation of the BT 500-IS-1 and the MVG 5. For further details please refer to the instruction manual of the MVG 5.
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Page 28: Voltage Testing
Operating Manual BT 500-IS-1 Voltage Testing Using the BT 500-IS-1, the following voltage tests can be performed: Shield to earth (sheath testing) Wires to shield (insulation testing) Wire to wire (insulation testing) To perform sheath testing, connect the red terminal of the BT 500-IS-1 to the shield to be tested and the black terminal to system earth. -
Page 29: Preparation Of Voltage Testing
[21] is alight. The instrument is ready for use. Pressing the green push button HV – ON [14] results in the BT 500-IS-1 being on switching-on standby (Attention !!: Consider the test object as being live, i. e. under high voltage!). -
Page 30: Switching Off
Operating Manual BT 500-IS-1 Switching Off Press the red push button [16] to switch the instrument off. The switch simultaneously shortens both output terminals, allowing the cable to be discharged through a discharge resistor. Protect the instrument from being switched on again by turning the detachable key switch to position –... -
Page 31: Customer Service
For this reason we recommend that in any case, when a high-voltage instrument such as the BT 500-IS-1 has been moved from an extremely cold into an extremely warm environment, it should be given 1 hour to get acclimatised to its new environment... - Page 32 Operating Manual BT 500-IS-1...
- Page 33 Tento symbol indikuje, že výrobek nesoucí takovéto označení nelze likvidovat společně s běžným domovním odpadem. Jelikož se jedná o produkt obchodovaný mezi podnikatelskými subjekty (B2B), nelze jej likvidovat ani ve veřejných sběrných dvorech. Pokud se potřebujete tohoto výrobku zbavit, obraťte se na organizaci specializující se na likvidaci starých elektrických spotřebičů v blízkosti svého působiště. Dit symbool duidt aan dat het product met dit symbool niet verwijderd mag worden als gewoon huishoudelijk afval.
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