LVI HVT -35FAVeng
Contents
1. View on the instrumental cases of the Cable mobile laboratory of LVI HVT series on Kamaz chassis The laboratory has the following main features e The equipment is build in in the noise and heat insulated carbody that helps to make comfortable working conditions of operator in cold and warm weather conditions e There is work table of Eurodesk type makes the process of measurements and processing process easier e There is a special dividing wall between operator s and high voltage departments which helps to prevent the touching of live parts e The special hatch is designed for the cable outlet to the object e The laboratory is equipped with the instrumental cases for the mounter s and driver s tools it helps to raise the production standards to make the working conditions better and more comfortable e The main equipment is set on the frame e Cable is laid in special cable channels I Seminars of LVI HVT users 11 Training Seminar for the customer s specialists Quarterly on the EMZ holding company s territory the practical seminars for the technicians working with high voltage laboratories of LVI series are held We would like to suggest to the customer s specialists to get all the necessary knowledge about our LVI HVT laboratories their main features and rules of safe operation The seminars will help you to make a final decision about the desired laboratory The seminar program consists of 1 Constructiv2. HOLDING COMPANY EMZ Yaroslavl Promzona COMPANY VAROSLAVL Decabristov str 14 Russian Federation 150029 Tel 4852 326015 ELEKTROMEGHANIGAL PLANT LIMITED Eri maneenemr FE Fp EA EYW OOO 4 43M3 Jie Pe Tn W SB APOCNABNb The cable laboratory LVI HVT 35FAV with 3 phases system of connection to the object LVI HVT 35FAV is meant for the following e Test power cables with paper oil insulation with operating voltage up to 20kV e Test of power cables with cross linked polyethylene insulation with operating voltage up to 35kV e power cable fault locating with the operating voltage 35kV using pinpointing Tp A Ea Wri Ta E r an Cro Cert CEPTH HKAT ISC SAU lt 2000 and prelocation ES E Sa pao apy atic A En oR e CHECTECMY METILIDKMLILEA The laboratory has the following functions eee tens 1 High voltage DC testing with leakage control 2 High voltage testing by very low frequency 0 1Hz 3 Measurement of the isolation s resistance 4 Burning of the power cable s damaged isolation cs 5 Distance measurement to the fault location in the cable with the help of the impulse method 6 Distance measurement to the fault location in the cable with the help of Arc Reflection method 7 Fault prelocation by Arc Reflection method during burning down amp Fault prelocation by the method of fluctuating traveling voltage wave 9 Fault prelocation by impulse current method method of current traveling w
3. ave 10 Fault location with the help of the acoustic method 11 Fault location and location of the cable route by the inductive method 12 Fault location of the cable sheath 13 Chose of the testing cable from the bunched cables A HIGH VOLTAGE TESTS BY RAISED VOLTAGE 1 The main equipment The laboratory equipment is usually subdivided into main and additional equipment Such an arrangement helps to perform the planned addition of the laboratories functions so to increase its affectivity 1 1 Control unit It is used for the commutation of the laboratory units and blocks on the feed circuits as well as for lightning and heating control inside the laboratory 1 2 Voltage regulator Is used for the sliding control of the feed voltage level delivered by the BVI 100 BNI M and IDP 10 blocks If the regulator isn t at the zero position so the testing process is impossible 1 3 VI control unit The high voltage testing control with testing voltage measurement on the high side using the SVN measurement system certified measuring system inaccuracy of measurements lt 3 A 1 High voltage tests by raised dc voltage 1 4 The high voltage testing block BVI 100M Functions of BVI Testings by high DC voltage up to 60 kV of dischargers cable lines etc leakage test objects within the range 0 2 mA 2 mA 20 mA During testings by high DC voltage of dischargers or other objects with small capacity it is used smoothing capaci
4. e design of LVI HVT laboratories of various updating and their components 2 High voltage tests of power objects and definition of insulation quality 3 Methods of definition of power cable faultlocating 4 Practical work with the laboratory s equipment on a test area 5 Different set of additional devices and their operation for LVI HVT laboratories 6 Car bodies construction of LVI HVT laboratories service of car bodies and the safety precautions requirements using the vehicles 7 The organization of guarantee and post warranty service 8 Maintenance staff of LVI HVT protection stage Practical training J Service The EMZ Holding Company pays undiverted attention to their production s technical user support Our products bear the all round guarantee program which includes the guarantee period of service and after the guarantee period of service 12 Warranty repair The warranty period of laboratory is 12 months On the morrow of the warranty period the manufacturer carries out after warranty service of machinery if the customer desires it 13 Post warranty service The post warranty service means that we consult the customers put their laboratories to usual examination schedule metrological maintenance blocks repair repair of laboratory knots and overall laboratory We can also suggest reconstructing and modernizing technically out of date laboratories Highly skilled experts quickly and quali
5. enerator IFL 55106 Is used for the cable fault locating by the inductive method 3 3 1 Inductive Fault Locator Set IFL 55106 Is used for e The definition of the location of a route and depth of the buried cable e The search and exact definition of the place of fault in the cable e The selection of the cable a choice of the demanded cable e The definition of the place of fault of the cable sheath Generator IFL 55106 Search SR 01 receiver Induction IP 01 detector Acoustic AP 01 detector Induction IP 08 detector A framework 3 3 2 Acoustic Acoustical method Acoustic AP 01 detector C Measurements 4 Low voltage testing block BNI M Is used for low voltage measurements using the external units It has the build in source of the smooth regulating voltage 0 220V 0 380V C 1 Low voltage measurement 4 1 Low voltage measurement block BNI M It is intended for low voltage tests using the external devices It has built in source of continuously adjusted voltage 0 220V 0 380V The laboratory 1s packed with the standard equipment for the following measurements the transformer ratio Kt Current measurements Ixx and standby loss APxx on low voltage Short circuit resistance measurement Zk Resistance measurements by bridge method Insulation resistance measurements Ground resistance measurements Conductor s current measurement Common low voltage measurements R I U D High voltage commutation and con
6. er designation Value Power 220 22V 50 60 Hz The burning installation parameters 1 The current expended by the installation in wasted motion mode no more than 3A 2 Consumption current in short circuit mode no more than 57A 3 Output voltage of the installation in wasted motion mode step AC 15 0 17 kV step AC 15 0 5 kV step AC 15 1 4 kV step DC 15 5 5 kV step DC 15 11 kV step DC 15 22 kV 4 Short circuit current on the installation s output step AC 15 64 A step AC 15 22 A step AC 15 7 8 A step DC 15 2 3 A step DC 15 1 4A step DC 15 0 7 A 5 Consumption power no more 12 kVA 6 Continuous work time of the installation in the burning mode 20 min interval no more 20 min 3 2 Connecting device Reflectometrical burning method Laboratory also has Arc Reflection Method when the burning is used Usage of this method allows to observe on the reflectometer screen changes in the place of fault during burning and to automatically do the preliminary distance finding to the fault location The distance is determined by peak discharge voltage in the burning cable since the first stage of burning cable is accompanied by pulse discharges during burning in the place of fault it is formed an arc For application of Arc Reflection Method during burning the burn down instrument is connected to the cable line through the connector AR 20 Inductive method 3 3Control unit of the g
7. ipment and methods The reflectometerical method 2 1 High voltage impulse generator GVI 2000M This generator is used for energy stacking in the high voltage condenser and sending the high voltage pulse of different frequencies to fault locating in the power cables up to 35kV by the acoustic method Parameter designation Value Power supply voltage 220422V 50Hz Impulse parameters of the wave generator Regulating range of the output voltage 0 5 0 10 0 20 kV Frequency of the impulse movement 3 15 Output voltage stages 5 10 20 kV Maximum storage energy 2000J Consumption current no more 15kVA Capacitors value 4 x 40 0 uF Time period of capacitors connection to the cable line 400 ms Generator s continuous running time with the following break 1 hour up to 1 hour 2 2 Voltage connector Decay method To determine the distance to the place of complicated high resistance or transient fault when transient resistance in the place of fault is much higher than the wave po resistance of line and is commensurable with the value of insulation resistance it is used a method of oscillatory discharge Decay method The method is based on the measurement of half period time of oscillatory electro magnetic process which appears during insulation failure of charged cable and has 2 modifications e Method of voltage traveling wave e Wave method of pulse current To apply the method of traveling voltage wave together with the so
8. nection techniques 5 Main switch HVS 75 3 High voltage switch HVS 75 3 is applied for choosing phases of testing cable and for commutation of equipment outputs It 1s located in the right side of the control panel HVS 75 3 has input ports for connection of functional modules and output ports for connection of high voltage testing cables of the laboratory It is also connected with the measuring terminals for connection of different devices On the main switch there are switches which automatically contact high voltage output to ground after the job is finished It has manual control and air barrier insulation 5 1 Cable drums blocks External accessing of laboratory provided by the drum with the power cable grounding cable and high voltage cable The high voltage cable length in the drum is 25 m 5 1 1 Cable drums blocks 4 137 001 low voltage measuring cable drum 4 cores 25 m lenght drum with the power cable 25 m lenght grounding cable drum sectional view 25 square mm drums with the high voltage testing screen DC cable up to 60kV and 25m length E Electrical safety 6 Electro safety of the laboratory s crew support system e Potential monitoring on chassis switches off while higher than 24V potential appears e Grounding resistance monitoring switches off while higher than 25Ohm resistance appears Control of the high voltage compartment doors switches off while the doors are open Manual emergency switching Auto fo
9. rced grounding of the high voltage testing installations and testing objects connecting to them after the test finish and in the case of emergency The installation of visual clearance of voltage falling Sound and light signal at the laboratory startup F Car system power 7 The car system power is carried out by the external source of power 220V G Laboratory s documentation 8 Operating documentation set with the certificates of conformity to laboratory and units 1 Operator s manual 2 Logbook 3 Electric schemes album 4 Program and methods of the laboratory periodical attestation H Vehicle Auto 9 Chassis AS a base auto Kamaz is being used Kamaz provides the working ability of the laboratory not only in the municipal conditions but at broken ground as well due to its good cross country ability ae a t ri 10 Carbody The isothermal van made from the sandwich panels is established on the chassis In the body of the car due to good thermal insulation the constant temperature is supported The van is divided into two parts high voltage compartment and the operating compartment An independent heater heats the van L J View on the control panel in the operator s section of the Cable mobile laboratory of LVI HVT series on Kamaz chassis ERE ye hs ee A View on the high voltage section of the Cable mobile laboratory of LVI HVT series on Kamaz chassis Eu i i ONEKTPONABEOPATo
10. ring cable 3 Software 4 The user s manual TDR 107 is a modern digital reflectometer It is specially developed for distance definition to the obstacles locations and any kinds of power cable faults The reflectometer provides the maximum accuracy of measurements and does not create dangerous surge voltage in cable isolation The main features of the reflectometer e obstacles distance measurement of wave resistance or fault e distance between obstacles measurement of wave resistance ofa cable e definition of faults character e definition of cable length e measurement of line shortening factor if the length is known The electric arc stabilization method Arc Reflection 2 5 The connector AR 20 for electric arc stabilization AR 20 coupler It is intended for distance locating to the fault by the impulse method classical and high voltage method of reflection of the arc Arc Reflection method The device can quickly locate the distance to the low ohmic and even high ohmic faults in the power cables without burning in Russia it is so called without burning method B2 Pinpointing cable fault locating 3 The pinpointing fault location equipment and methods 3 1 Burning installation UP 7M2 Is used for high ohmic power cable faults 0 4 35kV and in low ohmic to create conditions for e distance location to the fault by impulse method e pinpointing to the fault by audio frequency installations Paramet
11. tatively render all necessary assistance to our customers If you have any requests or questions please feel free to ask e mail sales vitaldrive net sales emzlvi rul lvi emzlvi ru or tel fax 7 4852 32 69 25 32 72 63 49 05 85 ISO 9001 2000 WY Cro Cert ISO 9001
12. tor with the capacity 0 4uF 1 4 1 Testing voltage source INN 100 60 The maximum DC testing voltage is 60kV at the maximum current 100 mA A 2 High voltage tests by raised ac voltage very low frequency 0 1 Hz 1 4 2 The high voltage testing block at the very low frequencies 0 1Hz While testing the cross linked polyethylene cable it is more convenient to use the devices generating the ac voltage at the very low frequencies from 0 1Hz and lower There is a VLF 6022 installation which is build in the laboratory It generates AC voltage at a very low frequency and is intended for field testing of paper oil isolated or polyethylene power cables power transformers electromotors and other objects with high capacitance This ot Je model with peak output voltage 60 Kvac is for testing cable classes up to35 P M Kv It could be loaded with high capacity for testing cables up to 16 km depending on type It has extended sort of possibilities currentmeter and capacitancemeter and also kilovoltmeter of output voltage timer of testing and indication of output voltage Technical description 230V 50Hz 8A peak 4A avg 0 60 kVac peak Selectable 0 1 0 05 0 02Hz Sinusoidal 1 1 uF 0 1Hz 2 2 uF 0 05 Hz 5 5 uF 0 02 Hz Measurement Kilovoltmeter Scaled 0 60 kVac peak Equipment Currentmeter Scaled 0 100 mAac peak Capacitancemeter 0 6uF B CABLE FAULT LOCATION B1 Preliminary cable fault locating 2 The preliminary fault locating equ
13. urce of testing voltage it is used a voltage connector photo Voltage connector is a capacitance divider with the division ratio which provides voltage on wave input of reflectometer not more than 60V Pulse reflectometer is connected through the voltage connector This method can be used for fault location in cables with paper oil insulation For cables with XLPE insulation this method is forbidden since application of high DC voltage breaks XLPE cable insulation 2 3 Current connector At the wave method of pulse current surge generator gives pulses to the cable line It breaks the weak place of insulation which initiates the reflection Reflected signal returns to the beginning of cable and is reflected from it to the side of fault since the input resistance of surge generator is equivalent to the short circuit Re reflected wave comes to the break and again returns to the beginning of cable etc For the purpose of this method it 1s used a surge generator current connector and reflectometer with the possibility of work in the appropriate mode The current connector is a current transformer which provides signal with the amplitude not more than 60V on the wave input of reflectometer While applying a method of oscillatory discharge the pulse reflectometer is connected to the socket U I 2 4 Reflectometer TDR 107 It is applied to definition of the cable inhomogenuties and any kinds of cable faults Structure 1 TDR 107 2 Measu
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