CA01082E_Catalog 30

Arrester Routine Factory Testing

Hubbell performs routine acceptance testing on 100% of arresters manufactured. Testing is done in accordance with IEEE C62.11 and IEC 60099-4. Additional testing is performed in accordance with internal Hubbell design specifications. If required, please contact your local representative for a copy of the routine arrester test certification. Arrester Routine Factory Testing : After assembly, the arresters are 100% tested as follows: Discharge Voltage : Determined by the sum of the resistor elements, each arrester is tested to be within a manufacturer specified range that aligns with the arrester’s published ratings. Reference Voltage : The voltage at which the arrester conducts the reference current per the table below. This test verifies the proper MOV discs were used in the assembly.

PVI-LP

7 mA

EVP, MH3, PH3, VL

9.5 mA

MVN, MH4, SVN, PH4, SVNH

17 mA

SVNR

28.5 mA

SVNX

34 mA

Partial Discharge (PD) : Power-frequency voltage is raised to the duty cycle voltage rating of the arrester or unit, held for not less than 2s, and then lowered to 15 times the MCOV of the arrester or unit. The measured PD shall not exceed 10 pC. Seal Test : The helium-mass spectrometer test is performed on arresters with >10% internal gas volume to verify the environmental seal of the arrester or unit. Power Frequency (PF) : A minimum voltage of 1.20 times the MCOV of the arrester or unit is applied to verify that the measured values of watts loss does not exceed the arrester or unit’s specified limits.

Page 63 | October 2023