Megger T 99/1 Instruction Manual
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Megger T 99/1 Instruction Manual

Megger T 99/1 Instruction Manual

40 kv test set
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Instruction Manual
40 kV Test Set
T 99/1
Date of release: 2003/28 – EN
128312862

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Summary of Contents for Megger T 99/1

  • Page 1 Instruction Manual 40 kV Test Set T 99/1 Date of release: 2003/28 – EN 128312862...
  • Page 2 man_t99-1_en_01-5.doc...
  • Page 4 40 kV Prüfgerät T 99/1 T99_1.drw 40 kV Test Set T 99/1 man_t99-1_en_01-5.doc...
  • Page 5 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. Megger also disclaims all responsibility for damage resulting directly or indirectly from the delivery, supply, or use of this matter.
  • Page 6 Megger. No claim will be ac-cepted in case of wear and tear, will of God, or connection to foreign components.
  • Page 7 man_t99-1_en_01-5.doc...

  • Page 8: Table Of Figures

    Röderaue D-01471 Radeburg declare in our responsibility, that the product 40 kV Test Set T 99/1 is in conformity with the regulations of the Council of European Community for equalization of the rule and regulation of the member states about electromagnetic compatibility.(EMC-regulation 89/336/EWG).

  • Page 9: Table Of Contents

    TECHNICAL DESCRIPTION 2.1. Specification ..............21 2.2. Scope of supply and accessories ......... 22 2.2.1. Scope of supply T 99/1 40 kV test set ....... 22 2.2.2. Accessories ............... 22 2.3. General functional description ........23 2.4. Description of the T 99/1 40 kV test set ......24 2.4.1.
  • Page 10 man_t99-1_en_01-5.doc...
  • Page 11 CHAPTER 1 SAFETY INSTRUCTIONS man_t99-1_en_01-5.doc...
  • Page 12 man_t99-1_en_01-5.doc...

  • Page 13: Safety Instructions

    SAFETY INSTRUCTIONS All persons involved in the installation, operation, maintenance and repair of this system must have read this user manual carefully. The instrument and all additional equipment are in accordance with the current state of safety technology at the time of delivery.
  • Page 14 The instrument may only be operated by authorised persons with the appropriate skills. Only operate the system if it is in technically perfect condition. No non-original parts may be used for the instrument and its peripherals, as the necessary safety will not otherwise be guaranteed.

  • Page 15: General Rules For Working With High Voltages

    1.1. General rules for working with high voltages Working with high-voltage devices and systems demands special care. This is particularly true of mobile operation, i.e. if the accommodation in question and its equipment do not ensure safety with permanent safety devices from the outset. Regulation DIN VDE 0104 "Installation and operation of electrical test systems"...

  • Page 16: Supplementary Instructions

    1.1.1. Supplementary instructions The following supplementary instructions are not taken directly from the regulations. To avoid dangerous charges, all metal parts in the vicinity of a high-voltage system must be grounded. Special care is required in the case of mobile operation in this respect. Do not disconnect while live (risk of arcs).

  • Page 17: Indications Used In The Description

    1.2. Indications used in the description Important instructions concerning personal protection, work safety and technical safety are indicated as follows: WARNING: Warning indicates work and operating procedures which must be complied with in full to exclude the possibility of persons being put at risk.
  • Page 18 man_t99-1_en_01-5.doc...
  • Page 19 CHAPTER 2 TECHNICAL DESCRIPTION man_t99-1_en_01-5.doc...
  • Page 20 man_t99-1_en_01-5.doc...

  • Page 21: Technical Description

    TECHNICAL DESCRIPTION 2.1. Specification No-load voltage 40 kV Short-circuit current approx. 15 mA Overcurrent tripping at 2 mA (switched) Current at 40 kV 2.5 mA Power supply Mains 230 VAC +5 % -10 % External battery 12 VDC Power consumption approx.

  • Page 22: Scope Of Supply And Accessories

    2.2. Scope of supply and accessories 2.2.1. Scope of supply T 99/1 40 kV test set 40 kV test set T 99/1, Order no. 2502429, consisting of: Quantity Description Type Code no. 40 kV test set T 99/1 2462125 Mains lead 2,5 m...

  • Page 23: General Functional Description

    2.3. General functional description The T 99/1 40 kV test set has been specially developed for testing power cable systems with a standardized rated voltage of 10 kV in accordance with VDE Regulations 0255 (new: VDE 0276-621), and the provisions of Regulation 0472, paragraph 508.

  • Page 24: Description Of The T 99/1 40 Kv Test Set

    2.4. Description of the T 99/1 40 kV test set 2.4.1. Performance features low weight voltage infinitely variable up to 40 kV current measurement in three ranges: 200 mA, 2 mA, 20 mA battery and mains operation built-in discharge device built-in time switch, adjustable from 0 to 60 min.
  • Page 25 This is the ideal response for a pure burning set. In the case of a test set, this current-voltage characteristic has to be corrected for the particular type of application. A test set must maintain the set test voltage within the usual range of leakage currents, i.e.
  • Page 26 Fig. 1 shows the current-voltage characteristic for the test set. U/ kV Voltage stabilization Continuous load characteristic Max. load characteristic Current limitation I/ mA T 99_1dia.drw Fig. 1 Current-voltage characteristic, T 99/1 man_t99-1_en_01-5.doc...
  • Page 27 The technology described provides an extremely constant voltage during testing, yet also allows quick charging. In addition, it is possible to perform pre-burning and prelocation with the T 01/6 Teleflex using the decay method, with the power consumption remaining of an order of magnitude which also permits extended operation off the external battery.
  • Page 28 c) Overcurrent tripping If the current exceeds the measuring range end value, e.g. by approx. 10% in the 2 mA range, the high voltage shuts down. To make it possible to also detect momentary flashovers which do not lead to full discharge of the test object, the test set does not cause a discharge in the event of overcurrent tripping.
  • Page 29 CHAPTER 3 OPERATION...

  • Page 31: Operation

    The following safety measures must be complied with to avoid personal injury or material damage as a direct result of operation of the T 99/1 by itself or in combination with other equipment: Check the immediate area surrounding where the T 99/1...
  • Page 32 Choose a site for the unit that satisfies weight and dimension requirements and provides a secure "base". Make sure that the proper functioning of other equipment/plant components is not impaired by the installation of theT 99/1. If other equipment/plant components have to be modified to accommodate the installation and operation of the generator, make sure that such measures are reversed once the work has been completed.

  • Page 33: Controls

    3.2. Controls 40 kV Prüfgerät T 99/1 T99_1.drw Fig. 2 Front view 1 Jack for battery 10 Overcurrent lamp 2 Amperemeter 11 Current measuring range switch 3 Voltmeter 12 Overcurrent trip "On" 4 Socket for HV connecting cable 13 Mains/battery "On”lamp 5 High voltage "On"...

  • Page 34: Start-Up

    3.3. Start-up CAUTION: Please note that all safety regulations concerning the use of high-voltage equipment must be complied with when the test set is started up. (see section 1.1.) 3.3.1. Preparing for a measurement Power supply The test set can be run off either the 115/230 V / 50-60 Hz AC mains or a 12 V battery.
  • Page 35 Soldering jumpers for 115 V operation Fig. 3 Rewiring for 115 V...

  • Page 36: Testing The Test Set For Correct Functioning

    T r 1 S i 1 = 4 AT - 115 V ABv. 3516 115 V S t.1 T r 1 0336 2,5 AT - 230 V~ S i 1 ABv. 3516 50/ 60 Hz 2,5 AT R 305 T99_1_Si.drw Fig.

  • Page 37: Connecting The Test Object

    If the high voltage shuts down while the test set is being run up, the protective spark gap has been activated. In the worst case, the gas will then have to be replaced. To do this, the test set has to be opened. Connect the H 909 filling device to the filler valve visible on the cascade vessel and top the vessel up with SF6 from a gas bottle.
  • Page 38 3 x L 909 2 x 0107 L 501 K 705 0336 T 99/1 0313 0403 T99_1a.drw Fig. 5 Connection If only one connection to ground is available, the protective and station grounds may both be connected to it, but using...

  • Page 39: Performing Measurements

    3.3.4. Performing measurements Switch the test set on using the toggle switch (17). Lamp (13) lights up Switch the high voltage on with button (5) Only possible if the voltage control (7) has been turned as far anticlockwise as it will go. Lamp in button (5) lights up Turn the current measuring range switch (11) to the measuring range which corresponds to the current with...
  • Page 40 When the test time has expired, the high voltage is shut down and the test object discharged. If the time switch is not used, press the discharge button (8) when testing is complete This also shuts down the high voltage and discharges the test object.
  • Page 41 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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