Rockwell Automation 1502 400 Amp Medium Voltage Contactor (Series D) - Manual (Page 16)

2-4 Receiving and Handling
1502-UM050D-EN-P – June 2013
Vacuum
Checker
Vacuum Contactor
in open position
Vacuum
Checker
Vacuum Contactor
in open position
Figure 2.1 – Vacuum Bottle Integrity Test Circuit
Table 2.A – Vacuum Integrity Testing Values
Dielectric Test Voltage (AC)
Test ™
System Duration
Allowable
Leakage
Vacuum Integrity 16.0 kV 60 s < 5 mA
™ The vacuum integrity cannot be tested using a Megger, as the voltage of a Megger is too low.
The allowable leakage current value shown in Table 2.A is exclusive of leakage
due to test equipment leads. The test setup leakage can be determined by
running the dielectric test with test leads not connected to the contactor and
noting the maximum leakage current. If this value is more than 2 milliamperes,
it should be added to the value shown in Table 2.A when testing the vacuum
bottles.
NOTE: Rockwell Automation does not recommend DC Hi-pot testing because
the values obtained during the test may not be a reliable indication of vacuum
bottle integrity. Some specific DC "GO–NO GO" testers may provide suitable
"defective" readings.
Vacuum Bottle Integrity Test
(cont.)