Delta 4000 Manuál s instrukcemi stáhnout pdf (Strana 107)

Maintenance and Calibration

81331 Rev 01 Nov 2010

5. With the main breaker OFF, plug the input power cord into the test set

AC POWER receptacle and into a three-wire grounded power receptacle

having the appropriate voltage and current ratings.

6. Suspend the outboard end of the high-voltage cable in free air so that it is

clear of all surrounding objects by at least 3 ft (0.91 m). Use dry nylon

rope if available.

7. Start your Delta4000 and use Delta Control (or a PowerDB form) and

perform a general GST-GND test.

When test is completed, observe test results. The results should be as follows:

Capacitance: between 4.0 and 8.0 pF

%DF or %PF: between -1.0 to +2.0%

Watts @ 10 kV: between -0.002 to +0.006

mA @ 10 kV: between 0.015 to 0.030

Repair

Megger offers a complete repair service and recommends that its customers take

advantage of this service in the event of equipment malfunction. Please indicate

all pertinent information including problem, symptoms, and attempted repairs.

Pack the Delta4000 in its transit case and include all cables that came with the

instrument. Equipment returned for repair must be shipped prepaid and insured

and marked for the attention of the Repair Department.

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Delta 4000 Manuál s instrukcemi Strana 107