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Baur PGK 25, Operating Instructions Manual, Page: 19 / 24

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Baur PGK 25 Operating Instructions Manual Download Page 19

5. Guard Connection

5-5

☞

Insulation test of a H.V. insulator.  Under this test, the surface
currents of the insulator will be ignored.

Measurement of surface currents. Insulation leakage currents
which are flowing to the housing will be ignored during this test.
Very small surface currents can be measured.

The test lead may not be interrupted during testing, otherwise
the test lead could carry high voltage!

Housing

Contact ring

Insulator

Station earth

Guard

Housing

Contact ring

Insulator

Station earth

Guard

Summary of Contents for PGK 25

Page 1: ...2 001 Operating Instructions PGK 25 High Voltage Testing Set BAUR Prüf und Messtechnik GmbH Raiffeisenstrasse 8 A 6832 Sulz Austria Tel 43 55 22 49 41 0 Fax 43 55 22 49 4 13 e mail headoffice baur at internet http www baur at ...

Page 2: ...0 2 ...

Page 3: ... this Operating Instruction Copyright Copyright by BAUR Subject to modification This manual contains all information necessary for the correct handling and use of the PGK 25 High Voltage Testing Set Before using the PGK 25 please read carefully this Operating Instruction If you have any question please contact directly Preface BAUR Prüf und Messtechnik GmbH Raiffeisenstrasse 8 A 6832 Sulz Austria ...

Page 4: ...cautions Warranty Safety Precautions Continued At the customer s written request we undertake to repair or replace at our discretion and as quickly as possible all parts that become faulty or useless as the demonstrable result of poor material faulty design or defective execution The 12 month warranty time starts with delivery We shall bear the costs of any faulty parts requiring replacement but n...

Page 5: ...ection 3 1 Maintenance 3 1 General rule 3 1 4 Setting into operation 4 1 Plotter connector 4 2 5 Guard Connection 5 1 General 5 1 Current measuring device 5 2 Application 5 3 6 Technical Data 6 1 General 6 1 Mechanical Data 6 2 Standard accessories 6 2 Special accessories 6 2 7 Insulation resistance chart 7 1 Contents ...

Page 6: ...0 6 Notes ...

Page 7: ...perating switch with timer and discharge unit 6 High voltage output with controlling contact 7 Connector for protective earth cable 8 Mains connector with power selector and fuses 9 Connectors for external battery 12 V 10 Connector for current range plotter 11 H V control lamp 12 µA meter 13 kV meter with indication for battery test Option Guard connection 14 Operating mode switch for current meas...

Page 8: ...1 2 1 Operating Elements 1 2 Notes ...

Page 9: ...tated If damage is discovered during unpacking contact the responsible transportation company immediately Request a written loss assessment and make them responsible for the damage We also refer to the General Terms of Sales and Delivery of The Test Set is shipped in robust cardboard cartons If Test Set is not used immediately store in carton in dry rooms 2 Packing and Shipping BAUR Prüf und Messt...

Page 10: ...2 Packing and Shipping Notes 2 2 ...

Page 11: ...cting Check also the inserted fuses and the amperage as shown on the typeplate Close cover by simply pressing on it Battery operation should only be performed with fully charged battery Units with built in battery must be maintained Since batteries discharge even when instrument is not in use batteries must be recharged occassionally Charge batteries after approx 30 days as well as before instrume...

Page 12: ...3 Power supply Power selection 3 2 Notes ...

Page 13: ...he needle must be within the marked range 4 Set range selector switch 2 to the desired range 0 5 kV or 0 25 kV 5 Set voltage regulator 3 to 0 Otherwise the instrument cannot be turned on 6 Set range selector switch 4 of amperemeter to maximum value 10 mA 7 The high voltage will be turned on by the timer 5 and the control lamp 11 will be on 8 Now the high voltage can be set to the desired value by ...

Page 14: ... to plot the test current as function of time to a external plotter via the plotter connector 10 of the PGK 25 The output voltage is function of the current range 4 200mV at full scale deflection of the internal ampermeter 4 2 Plotter connector ...

Page 15: ...rminal are separately mounted In the Guard option resistors with 1 kΩ Ω Ω Ω Ω 200W are integrated in the current measuring lead 461 408 and in the shield connection of the H V lead These resistors serve for the protection of the instrument against transient voltages The resistors in the connection leads must be checked for damage after high voltage breakdown of test objects with high capacity 0 5 ...

Page 16: ...oltage source without being acquired by the current measuring device If the shield connection is not used it must be isolated from earth otherwise the µA meter will be short circuited With the operating mode switch 14 in position B the current measuring terminal 15 is electrically isolated The current measuring device acquires all currents which are conducted through the current measuring terminal...

Page 17: ...ard Connection 5 3 Application Insulation test between a conductor and the shield The insulation currents between the conductors will be ignored Shield of test object connected to earth Guard Station earth ...

Page 18: ...t between the conductors The insulation currents between the conductors and the shield will be ignored Insulation test between conductor and shield All of the insulation currents will be measured Conductors of test object not connected to earth Conductors of test object and shield connected to earth Station earth Guard Guard Station earth ...

Page 19: ...e currents Insulation leakage currents which are flowing to the housing will be ignored during this test Very small surface currents can be measured The test lead may not be interrupted during testing otherwise the test lead could carry high voltage Housing Contact ring Insulator Station earth Guard Housing Contact ring Insulator Station earth Guard ...

Page 20: ...5 Guard Connection 5 6 Notes ...

Page 21: ...ranges 1 µA 10 µA 100 µA 1mA 10 mA maximum deflection Currents from 50 nA are measurable The current is measured via an operational amplifier and displayed on a meter Class 1 5 Plotter output For current recordings a plotter with a floating input can be connected to the insulated BNC connector 10 The same test voltage is available for each current range e g 0 200 mV Built in battery 12 V 6 5 Ah op...

Page 22: ...ent No 470 880 Special accessories Leatherbag LT 25 Ident No 411 519 2 Battery connection cables ret black Ident No 470 067 Discharge rod ES 45 Ident No 411 501 Guard connection Ident No 471 094 Ground monitoring Ident No 470 854 Accesorios Conexion del anillo de guarda Conjunto de actualización Ref No 470 854 1 Cable de conexión de Alta TensiónRef No 461 307 1 Cable de tierra Ref No 461 308 1 Cab...

Page 23: ...7 Insulation resistance chart 7 1 7 Insulation resistance chart ...

Page 24: ...7 Insulation resistance chart 7 2 Notes ...

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