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Overhead Applications

Such typical components as capacitors, transformers, potheads, terminations
and insulators  can be tested with the PT-5000W as shown here.

Transformers can be tested to verify insulation between both primary and secondary
windings. For two bushing transformers connect the tester from either primary bushing
to ground and select the 5,000VDC range. Single primary bushing transformers cannot
be tested here.

Test transformer secondary insulation to ground only when the secondary center
tap has been ungrounded. Select the 500VDC range.

Test insulation from primary winding to secondary winding as shown here.
Select the 500VDC range.

Test capacitor insulation to ground on two bushing capacitors as shown. Select
the 5,000VDC range for typical primary voltage power factor correction capacitors.

Testing across the two bushings of a two bushing capacitor or from bushing to ground on
a one bushing capacitor will place a substantial charge on the capacitor and the PT-5000W
will indicate leakage current until the capacitor is fully charged. Because of the built in 30
second time limit, capacitors tested in this manner can only be charged up to 500VDC and
should only be tested with the 500VDC range. Remember that the tester requires up to 2
minutes to fully discharge a charged capacitor and should remain connected for that time.

Underground Applications

Underground insulation systems include a wide variety of cable and equipment and
almost any insulating system or component can be tested with the PT-5000W. Secondary
voltage systems should be tested only with the 500VDC range except some direct bury
secondary cables with higher test voltages can be tested on the 5,000VDC range. Consult
the cable supplier for more information. 

Pad mount transformers can be tested with the same connections as shown for overhead
transformers as shown for overhead transformers above.

Primary voltage insulating systems can be tested with the 5,000VDC range. When
testing primary voltage systems that include lengths of underground cable, the
PT-5000W may initially show a high leakage indication until the cable charges up.
If the high leakage indication does not turn off before the end of the test then leaky
or shorted cable would be indicated. For very long cable lengths, it may be possible
to test only with the 500VDC range.

Содержание PT-5000W

Страница 1: ...Operating Instruction Manual PT 5000W PORTABLE DUAL HIGH VOLTAGE TESTER 1475 Lakeside Drive Waukegan Illinois 60085 U S A 847 473 4980 fax 847 473 4981 website www HDElectricCompany com ...

Страница 2: ...er selectable 500VDC or 5 000VDC The output is current limited to two milliamps maximum for safety The tester is turned on by pressing and holding a single pushbutton for 500VDC or two buttons for 5 000VDC The buttons are mechanically guarded to prevent accidental operation The front panel has indicators for each voltage range When only the left button is pressed an amber light turns on indicating...

Страница 3: ...either 100 or 1 000 microamps depending on the voltage range selected Equipment with a substantial capacitance such as long cables or power factor correction capacitors may indicate leakage current when first energized If the equipment is in good condition these leakage current indications will disappear as the equipment is charged APPLICATIONS The PT 5000W is a general purpose insulation tester f...

Страница 4: ...4 from primaries to secondaries primary to ground on two bushing transformer secondaries to ground center tap must be ungrounded one bushing to ground across two bushings one bushing ...

Страница 5: ...of the built in 30 second time limit capacitors tested in this manner can only be charged up to 500VDC and should only be tested with the 500VDC range Remember that the tester requires up to 2 minutes to fully discharge a charged capacitor and should remain connected for that time UndergroundApplications Underground insulation systems include a wide variety of cable and equipment and almost any in...

Страница 6: ...elsareaffixedtothe products Readandunderstandeach ofthembeforeproceeding Theusersofthisdeviceshouldalwaysbe equippedwithpersonalprotectiveequipment includinghighvoltagegloves flameretardant clothingandeyeandfaceprotection Some applicationsmayrequireadditionalprotective equipment Failuretofollowtheseandotherwarnings andsafetyprecautionsmayresultinsevere injuryordeath NOTICES Thisproductisdesignedfo...

Страница 7: ...7 ...

Страница 8: ...ete unavailable over time end of life In the event that a Product cannot be repaired or replaced due to unavailability of parts HD Electric Company will use commercially reasonable efforts to obtain substitute parts or conduct work around design but cannot guarantee its ability to do so Items not found defective will be returned at your expense or failing receipt of instruction from you on return ...

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