Eaton Cooper Power Series Operation And Installation Instructions Manual

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Eaton Cooper Power Series Operation And Installation Instructions Manual Manual pdf 21 page image

17TYPE VSA12,VSA12B,VSA16,VSA20,ANDVSA20A O P E R ATIONANDINSTALLATIONINSTRUCTIONS MN280063EN May 2017High-potential withstand testingwarNiNghazardous voltage. the switchgear (apparatus andcontrol) and high-voltage transformer must be in a testcage or similar protected area to prevent accidentalcontact with the high-voltage parts.Solidly ground all equipment. failure to comply canresult in death, severe personal injury, and equipmentdamage. t221.5cautioNradiation. at voltages up to the specified test voltages,the radiation emitted by the vacuum interrupter isnegligible. however, above these voltages, radiationinjurious to personnel can be emitted. See “Serviceinformation S280-90-1, vacuum interrupter withstandtest voltage ratings information” for furtherinformation. g109.2The high-potential withstand test provides information onthe dielectric condition of the recloser and the vacuumintegrity of the interrupters. Use the following proceduresto perform high-potential withstand tests at 37.5 kV rms60 Hz or at 50 kV, for 60 seconds. See Figure 16 for testconnection diagrams.test 11. Close the recloser contacts.2. Ground the recloser.3. Connect terminals 2, 4, and 6 together.4. Apply proper test voltage to terminals 2, 4, and 6.5. The recloser should withstand the test voltage for 60seconds.test 21. Close the recloser contacts.2. Ground the recloser.3. Ground Phase A (terminal 2) and Phase C (terminal 6).4. Apply proper test voltage to Phase B (terminal 3).5. The recloser should withstand the test voltage for 60seconds.test 31. Open the recloser contacts.2. Ground the recloser.3. Connect and ground terminals 1, 3, and 5.4. Connect terminals 2, 4, and 6.5. Apply proper test voltage to terminals 2, 4, and 6.figure 16. connection diagrams for high-potentialwithstand testing.6. The recloser should withstand the test voltage for 60seconds.7. Reverse the connections: ground terminals 2, 4, and 6.8. Apply test voltage to terminals 1, 3, and 5 for 60seconds.9. The recloser should withstand the test voltage for 60seconds.!135246acTEST 1PHASE TO GROUND135246acTEST 2PHASE TO PHASE135246acOPEN CONTACT135246acOPEN CONTACTTEST 3

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