T&R PT30-10 Operating And Maintenance Manual Download Page 17 | Manualshive

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17

2.

OPERATION

2.1.

Supply Voltage Selection

2.2.

Front Panel Control Functions

2.3.

Testing Procedures and Safety Precautions

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Summary of Contents for PT30-10

Page 1: ...gh Voltage DC Cable Test Set Type PT30 10 DESIGNED AND MANUFACTURED BY T R Test Equipment Limited Keens Lane Worplesdon Guildford Surrey GU3 3LS United Kingdom Telephone 01483 235757 e mail sales trte...

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Page 3: ...he equipment that may be connected to a local earth Ensure that the product is properly grounded before making any connections to inputs or outputs Terminal ratings must be observed to prevent fire ha...

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Page 5: ...5 CONTENTS 1 Description of Equipment 2 Operation of Equipment 3 Maintenance Instructions 4 Standard Accessories 5 Overall Performance Specification 6 Calibration Results 7 Test Certificate 8 Revision...

Page 6: ...6...

Page 7: ...MENT 1 1 Electrical Specification 1 2 Output Voltage Control 1 3 Overload Protection 1 4 Metering 1 5 Automatic Earthing 1 6 Manual Earthing Using DP40 Discharge Earthing Probe 1 7 High Voltage Output...

Page 8: ...8...

Page 9: ...with respect to earth b 30kV DC negative with respect to earth c 30kV DC positive and negative with respect to earth simultaneously thus giving 60kV DC between the outputs 1 1 4 The maximum output cur...

Page 10: ...ing transformer is operated by means of a control knob which is located on the right hand side of the instrument s front panel 1 2 3 To increase the output voltage turn the control knob in a clockwise...

Page 11: ...he incoming mains supply to the unit The rating of the fuse is as follows F 5amp for 240V 220V 115V operation 1 3 2 The outputs from the instrument are protected by means of a fast acting magnetic ove...

Page 12: ...both the positive and negative output currents simultaneously The individual meters are captioned as follows a Positive milliammeter mA DC In red b Negative milliammeter mA DC In blue The output mill...

Page 13: ...s every hour The contact surfaces of the internal dump switches are made of very hard dissimilar metals to contain contact burning and erosion 1 5 2 The automatic discharge earthing switch is controll...

Page 14: ...mportantly Possible Fatal Injury to the Operator 1 6 2 The Spectification for DP40 Max discharge voltage kVdc 40kVdc Max discharge capacitance 6 F Max discharge energy 7 2kJ Max discharges per hour 4...

Page 15: ...UR67M with a multi stranded inner core The outer screen is connected via the high voltage plug to the ground connection on the PT30 10 1 7 2 The high voltage plug is protected in transit by a plastic...

Page 16: ...with all input and output connections The instrumentation is mounted on a sub chassis which inturn is mounted to the front panel via a shock absorbing system Also the instrumentation is further prote...

Page 17: ...17 2 OPERATION 2 1 Supply Voltage Selection 2 2 Front Panel Control Functions 2 3 Testing Procedures and Safety Precautions...

Page 18: ...18...

Page 19: ...desired supply voltage is seen through the fuse drawer window c The PT30 10 is suitable for 3 different supply voltages as follows 240V 220V or 115V d Replace fuse drawer once the desired voltage has...

Page 20: ...ON lamp To indicate that the key switch is RED closed thus connecting the equipment to the supply Also indicates that the supply fuse is healthy Divide by 10 push button Selects both output milliammet...

Page 21: ...ipment Limited SHEATH MAINS FUSE 5AMP IN VOLTAGE SELECTOR MIN MAX A B C D E F G H I J K L M N A Positive kilovlotmeter B Positive milliampmeter C Power ON OFF key switch D Power ON lamp E Fused mains...

Page 22: ...uld be treated with caution since the soil may have a high resistivity 2 3 2 CONNECTION SEQUENCE See Figure 1 1 for UNI POLAR and Figure 1 2 for BI POLAR testing a Connect earth lead between test obje...

Page 23: ...ge regulator to the zero voltage position e Observe the slow decay in the output voltage which will indicate a healthy cable f After 30 seconds switch off the HV output The PT30 10 has an auto earth s...

Page 24: ...Connections for PT30 10 HV Cable Test Set Figure 1 1 Uni Polar Test PT30 10 VE VE Cable Under Test DP40 Earthing Discharge Stick Mains Supply Impedance Earth Connect to Low Positive Output Blanking P...

Page 25: ...25 External Connections for PT30 10 HV Cable Test Set Figure 1 2 Bi Polar Test PT30 10 VE VE Cable Under Test DP40 Earthing Discharge Stick Mains Supply Impedance Earth Connect to Low...

Page 26: ...sh condition as detailed above also check for signs of erosion on the regulator track Wipe clean with an alcohol moistened cloth If the track is badly eroded it should be cleaned with very fine sandpa...

Page 27: ...ad b 2 keys for mains ON OFF switch c 5 metre earth lead fitted with clip and tag d 5 metre high voltage output cable fitted with HT plug clip colour coded red e 5 metre high voltage output cable fitt...

Page 28: ...t 2 0kV rms for 1 minute between mains input and frame 5 3 Induced voltage test 35kV DC for 5 minutes 5 4 Flashover test 6 flashovers at 30kV DC on each output direct to earth 5 5 Normal voltage test...

Page 29: ...s Positive KV meter Standard KV meter 10kV 20kV 30kV Equipment s Negative KV meter Standard KV meter 10kV 20kV 30kV Equipment s Positive mA meter Standard mA meter 10mA x1 Range 5mA 2mA 1 0mA 10 Range...

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Page 31: ...31 7 TEST CERTIFICATE PRODUCT TYPE PT30 10 DC Cable Test Set PRODUCT SERIAL NUMBER TEST PROCEDURE As routine test sheet PT30 10 rts doc TESTED BY PASSED BY DATE...

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Page 33: ...33 8 REVISION Product Type High Voltage DC Cable Test Set PT30 10 File PT30 10 manual v7 doc Author D Buckle Issue Date 7 12 06 2001 Modified By D Buckle Checked By I D W Lake Date 12 06 2001...

Page 34: ...34 Drawings Required A2 000151 latest issue...

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